These dust storms, originating from the Sahara Desert, travel across the Atlantic Ocean and can reach as far as North America, including areas like Texas and Florida.

**Health Issues:** The dust carries pollutants and pathogens that can exacerbate respiratory conditions such as asthma and COPD, leading to increased hospital visits and health complications.

In Barbados, for example, there has been a noted increase in asthma diagnoses correlated with Saharan dust events.

**Air Quality Degradation:** The presence of Saharan dust reduces air quality, increasing particulate matter levels, which can lead to respiratory and cardiovascular issues.

**Weather Alterations:** The dust can suppress hurricane development by introducing dry air into the atmosphere, which reduces moisture necessary for storm formation.

**Nutrient Supply:** The dust is rich in nutrients like phosphorus and iron, which fertilize ocean waters and land ecosystems, boosting marine productivity and benefiting areas like the Amazon rainforest.

**Climate Regulation:** By reflecting sunlight back into space, Saharan dust can help cool the Earth's surface, counterbalancing some effects of global warming.

**Affected Areas:**
Saharan dust impacts a wide range of areas across the Americas, including the Caribbean, the Gulf Coast, and parts of the southeastern United States.

**Health Advisories:** Issue warnings to residents, especially those with respiratory issues, to stay indoors and use air purifiers during high dust concentrations.

**Monitoring and Forecasting:** Utilize satellite and atmospheric monitoring systems to predict dust events and inform the public and policymakers.

**Infrastructure Readiness:** Ensure that power grids and traffic systems are prepared for potential disruptions caused by reduced visibility and air quality issues.

These dust storms, originating from the Sahara Desert, travel across the Atlantic Ocean and can reach as far as North America, including areas like Texas and Florida.

Title:

Content: Hurricane Killer? Here are some things you may not know about Saharan dust

Dust from Africa moves across the Atlantic every year from late spring to early fall

It’s a common visitor in the summer months: dust from the Saharan Desert. Hazy skies and occasional allergies are common issues caused by the dust. But did you know that this layer of dust is more interesting than it appears? Here are some things you may not know about Saharan dust:

KEY TAKEAWAYS

  • Millions of tons of dust are transported across the Atlantic every year
  • Nutrient-rich Saharan dust plays a crucial role in the global ecosystem
  • Dust suppresses hurricane development

WHOLE LOTTA DUST!

Every year, from late spring to early fall, trade winds transport 180 million tons of dust from the Saharan Desert across the Atlantic Ocean. Impressively, that’s as much as 4.5 million 18-wheelers full of dust!

NATURE’S BEST FRIEND

Saharan dust is often rich in nutrients like iron and phosphorus. As the dust settles over the ocean, it fertilizes algae and plankton, allowing them to grow and flourish in an otherwise barren environment. These organisms are vital sources of food for ocean life.

Similarly, as the dust settles over land, areas like the Amazon rainforest benefit from the extra nutrients.

HURRICANE EXTINGUISHER

The African dust that moves across the Atlantic Ocean is also called the Saharan Air Layer (SAL). The SAL occurs in waves at the same time as Atlantic hurricane season, from June through November.

It’s known that the SAL limits hurricane development and strength. This is because tropical storms like hurricanes need deep, rich moisture from the surface to the top of the atmosphere to survive. Since the air carrying Saharan dust is usually dry, it can prevent storms from forming and suppress existing storms from growing and strengthening.

DUST’S IMPACT ON TEXAS

While a dense plume of dust sometimes causes minor allergy-like symptoms for some, the most noticeable impact is on Texas skies. A haze often forms on the horizon, giving an ordinarily clear, blue sky a milky hue during the day.

At sunrise and sunset, the horizon can appear brilliantly orange because, with dust in the air, sunlight has more particles to bounce off.

About the Author

Sarah Spivey is a San Antonio native who grew up watching KSAT. She has been a proud member of the KSAT Weather Authority Team since 2017. Sarah is a Clark High School and Texas A&M University graduate. She previously worked at KTEN News. When Sarah is not busy forecasting, she enjoys hanging out with her husband and cat, and playing music.

Recommended Videos

Title:

Content: Saharan dust reaches stunning levels in Atlantic. Here's what that means for hurricane season

Significant Saharan dust plumes are common in the Atlantic during the start of hurricane season. If levels of SAL maintain a steadiness after about Aug. 20, then there would be significant ramifications to both the amount of cyclones and their overall strength.

First, Europe that was socked in by record levels of dust from the Sahara Desert in Africa. The Atlantic appears to have now taken the lead, with dust levels not seen in years across parts of the basin.

Satellite measurements indicate intensive plumes of dust, called the Saharan Air Layer, across much of the eastern Atlantic. Traces of dust have even made the more than 4,000-mile journey to Florida and the Gulf Coast.

Sunrises and sunsets have been enhanced across the Sunshine State as the particles scatter typical colors, allowing hues of orange, yellow and red to dominate the sky.

Aside from the vibrant colors, something not falling from the sky is precipitation.

According to NOAA, the air surrounding the SAL has about 50% less moisture than the typical atmosphere. This means the presence of the SAL can be detrimental to cloud formation and thunderstorm activity.

Significant plumes of dust and dry air are common during the first months of the hurricane season and usually persist through mid-August.

A LOOK AT A PHENOMENON THAT COULD DERAIL AN ACTIVE HURRICANE SEASON

How Saharan dust impacts hurricane season

NOAA estimates that more than 180 million tons of dust leave the African continent every year, reducing thunderstorm activity and tropical cyclone formation.

Dry air and Saharan dust are perennial wild cards in tropical weather outlooks, as meteorology has yet to develop sufficient methods to forecast plumes weeks and months in advance.

Years with significant dust often experience reduced cyclone activity. Seasons with minimal dust typically rank at the top echelons of activity, thanks to increased moisture availability for tropical systems and warmer water temperatures.

The current season is a bit unusual as water temperatures started on the warm side across much of the basin, negating any minor effects from a dust storm.

Warm waters and limited exposure to dry air helped with the formations of AlbertoBeryl and Chris during late June and early July.

Since Beryl’s historic trek through the Caribbean and into the Gulf of Mexico, the basin has been relatively quiet, a likely product of the increase in dry air.

The trend for limited activity in the Atlantic basin is expected to continue for the foreseeable future, meaning that the next cyclone formation may be weeks away.

5 THINGS TO KNOW ABOUT THE SAHARAN DUST PLUME

During an average year, the fourth-named storm usually doesn’t form until about Aug. 15, meaning any formation during the next month will keep the season ahead of a typical schedule.

Despite the hostile conditions in the Atlantic, hurricane forecasters at Colorado State University maintain that 2024 will be a busy season in the Atlantic.

CSU released its updated outlook Tuesday, which calls for an additional 22 named storms, 11 hurricanes and five major hurricanes.

"This forecast is of above-normal confidence. We anticipate a well above-average probability for major hurricane landfalls along the continental United States coastline and in the Caribbean," CSU forecasters stated during their most recent tropical update. "As with all hurricane seasons, coastal residents are reminded that it only takes one hurricane making landfall to make it an active season."

The season runs through Nov. 30, but nearly 60% of cyclone formation occurs in August and September.

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What areas of the Americas have been affected by Saharan dust storms?

What areas of the US have been affected by Saharan dust storms?

What areas of the Americas have been affected by Saharan dust storms?

What areas of the US have been affected by Saharan dust storms?

**Health Issues:** The dust carries pollutants and pathogens that can exacerbate respiratory conditions such as asthma and COPD, leading to increased hospital visits and health complications.

Title:

Content: Older Barbadians being diagnosed with asthma Loop Barbados

The content originally appeared on: Barbados News

Head of the Queen Elizabeth Hospital’s Respiratory Unit, Dr Dawn Alleyne, says more Barbadians are being diagnosed with asthma later in life, in their 40s and 50s.

Dr Alleyne, who is a Pulmonologist/Intensivist and Head of the Department of Medicine at the hospital, said the incidence of asthma in the Caribbean, including Barbados, had increased 17-fold since the 1970s. She added these trends are correlated with the increase in Sahara dust plumes and the frequency of the dust in the atmosphere.

She further noted that about 20 per cent of the local population had asthma. This meant the condition was quite common.

Due to climate change, dust events have been increasing. The dust, which traditionally visits from June to August, is now being seen in March or April.

The Pulmonologist/Intensivist said traditionally in Barbados, persons presented with asthma in childhood and either grew out of it as they got older, or lived with it as adults. However, this has changed.

“On a day-to-day basis when we conduct clinics, either [in my private practice] or at the hospital, I meet lots of people with severe lung diseases of all types, especially people with asthma. And several of my asthmatic patients have recorded quite clearly in their diaries that they’ve had challenges when we get the situations where we have cars covered in grey dust. Generally, those are the heavy Sahara dust days.

“A lot of the patients are now having to reach for their rescue inhalers, the Ventolin and Berotec inhalers because the asthma condition which generally has been stable, seems to deteriorate during the periods of times when we have lots of dust in the atmosphere,” Dr Alleyne stated.

The respiratory expert shared that persons usually presented with a gamut of symptoms when dust events occurred. These include itchy eyes, runny nose, soreness of the throat, coughing, especially at night, and wheezing.

Those who have chronic lung diseases, such as interstitial lung disease and chronic obstructive lung disease, also complain of increase in shortness of breath on the days in which there is a heavy dust cover,” she said.

She added that people who are not asthmatics should pay close attention to symptoms, such as chest tightness, when there is exertion, allergic rhinitis, eczema, snoring at night or allergic conjunctivitis. These persons could have an increased risk of developing asthma, she stated.

Dr Alleyne noted the situation was not unique to Barbados but could be seen across the world wherever the Sahara dust is being disseminated.

“So, you look at studies from Spain, Italy, the United States, and the French Caribbean. Throughout these areas, people are reporting an increased incidence of Sahara dust plumes, increased incidence of deterioration of asthma control, and patients are being hospitalised for not only respiratory illnesses, but also cardiovascular illnesses. So, the Sahara dust situation really is one that we really need to look at, not just as a hazy day and a sunset that’s not quite clear but really the impact that it is having on health in general, and we need to take it quite seriously.”

In the case of cardiovascular diseases, she said research show that the dust seems to affect the cardiovascular system adversely.

She explained that while larger dust particles are usually deposited pretty high in a person’s airway, causing sneezing and coughing, the smaller ones had the potential to enter the bloodstream and cause inflammation, which can be a precursor to cardiovascular events.

Dr Alleyne also suggested that Barbados implement a Sahara dust warning system, much like the one that exists in Trinidad, where they give accurate accounts of the air quality index. She said it could help people with respiratory conditions prepare and protect themselves better.

“So, I’m hopeful that in the future, we’ll be able to get something that tells us these are the exact numbers and to give warnings to specific categories of people. I think that will be very helpful,” the Pulmonologist/Intensivist stated.

SOURCE: Barbados Government Information Service (GIS).

How can the authorities prepare for a Saharan dust storm?

How does Saharan dust affect immediate weather?

What are the negative health effects of Saharan dust?

In Barbados, for example, there has been a noted increase in asthma diagnoses correlated with Saharan dust events.

How does Saharan dust affect immediate weather?

What are the negative health effects of Saharan dust?

What areas of the Americas have been affected by Saharan dust storms?

**Air Quality Degradation:** The presence of Saharan dust reduces air quality, increasing particulate matter levels, which can lead to respiratory and cardiovascular issues.

Title:

Content: Europe

CAMS monitors Saharan dust transport across western and central Europe

Aerosol forecasts from the Copernicus Atmosphere Monitoring Service present a big amount of Saharan mud transferring northwards throughout Europe over the following few days. CAMS continues to watch the Saharan mud transport following current forecasts that confirmed the very best values over western Europe between 15 and 17 March 2022. The CAMS forecasts additionally present degraded air high quality throughout giant components of Spain, Portugal and France associated to the Saharan mud transport.

Copernicus Atmosphere Monitoring Service (CAMS) forecasts since 11 March have been exhibiting a big plume of mud with very excessive values of aerosol optical depth (AOD) and mud concentrations travelling northwards throughout the Iberian Peninsula, France and central areas of Europe between 15 and 17 March. The trajectory of this mud plume has resulted in very excessive predicted floor concentrations of PM10 as much as 250 micrograms per cubic metre, though European Environment Agency measurements have been exhibiting values in extra of this at many websites throughout Spain on 15 March. This is larger than the EU beneficial 24-hour imply threshold of fifty micrograms per cubic centimetre.

CAMS tracks all levels of mud transport from the Sahara Desert yearly and has been monitoring the annual mud transport, from completely different supply areas throughout the desert, for the reason that starting of the 12 months. CAMS forecasts are offered at each the European and global scale, and function a instrument to assist residents, companies, and policymakers make knowledgeable selections on a steady foundation with 24/7 air high quality forecast information. Air high quality is recognised as being very important to human well being as excessive concentrations of mud can have well being impacts on the respiratory programs of all individuals within the affected areas and add to particulate matter air air pollution from native sources. Senior Scientist, Mark Parrington, on the ECMWF Copernicus Atmosphere Monitoring Service feedback: “In CAMS we use satellite and in situ observations in our air quality forecasts to be able to provide a continual and reliable source of information for monitoring air pollution events such as this. Long-range transport events such as this occur most years and the impacts of the current event is quite striking. While the dust will affect air quality in parts of southwest Europe, the larger scale impacts will be hazy skies or some surface deposition.” You can discover extra data on the CAMS monitoring of this 12 months’s Saharan mud season right here: https://atmosphere.copernicus.eu/saharan-dust-heads-north-cams-tracks-its-progress-nfAdditional air high quality information will be discovered within the Atmospheric Data Store (ADS):https://ads.atmosphere.copernicus.eu/cdsapp#!/dataset/cams-global-atmospheric-composition-forecasts?tab=overviewandhttps://ads.atmosphere.copernicus.eu/cdsapp#!/dataset/cams-europe-air-quality-forecasts?tab=overview

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How does Saharan dust affect immediate weather?

What are the negative health effects of Saharan dust?

respiratory issues
cardiovascular diseases

**Weather Alterations:** The dust can suppress hurricane development by introducing dry air into the atmosphere, which reduces moisture necessary for storm formation.

Title:

Content: Breaking News
More () »

San Antonians may want to stay indoors next week. Here's why.

A noticeable change in the air will arrive to the Alamo City next week.

SAN ANTONIO — San Antonio skies could look quite different next week but not in the way we're hoping for.

As San Antonians eagerly wait for rain to break our triple-digit temperatures another common occurrence will pick-up next week known as Saharan dust.

The dust is a combination of sand and dust traveling from North Africa across the Atlantic that peaking in late June through mid-August.

Light amounts of Saharan dust have arrived to the Alamo City this past week but will become more noticeable. Therefore, if you have asthma, COPD or any other type of respiratory illness you will want to stay indoors as much as possible during this time.

Timing of Saharan dust:

Monday - Little changes will be in the forecast as heavier amounts of dust remain over the gulf coast.

Credit: KENS 5 Weather

Tuesday - A large moderate level of Saharan dust will move into South Texas and San Antonio by late afternoon. San Antonians may notice hazy skies and trouble breathing if you're more sensitive to dusty air. But the dust doesn't stop here.

Credit: KENS 5 Weather

Wednesday - By mid-week Saharan dust ramps up continuing to build and push farther north stretching to the Dallas area. The continuing flow of the dust is partly due to a high pressure bringing a southeasterly flow to help pump the dust toward South Texas.

Credit: KENS 5 Weather

Thursday - As the week progresses dust levels continue to rise and could affect air quality levels. For those with any respiratory illnesses they should avoid outdoor activity including vigorous exercise. Also try to keep windows and doors closed. We will continue to monitor this development next week.

Credit: KENS 5 Weather

As dust increases across the area, San Antonians will notice more vibrant sunrises and sunsets. However, during the afternoons the sky appears a more milky white color.

Before You Leave, Check This Out

How does Saharan dust affect immediate weather?

How does Saharan dust affect immediate weather?

**Nutrient Supply:** The dust is rich in nutrients like phosphorus and iron, which fertilize ocean waters and land ecosystems, boosting marine productivity and benefiting areas like the Amazon rainforest.

Title:

Content: 03-27-2024

Sahara desert dust storms carry harmful bacteria and fungi around the globe

We often dismiss springtime allergies as reactions to local pollen. Yet, something else might cause our sniffles and sneezes: a massive dust storms that originate thousands of miles away in Africa’s Sahara region.

These gargantuan dust plumes travel the globe every summer, carrying a cocktail of pollutants and potential pathogens across continents.

Dr. Shankar Chellam, a Texas A&M University professor is leading the charge to understand the biological hitchhikers within dust storms.

He and his team are working to determine what microbes, specifically bacteria and fungi, migrate with the dust and explore their potential impact on human health.

Hidden passengers in Sahara dust

“We all get allergies and potentially other more severe health effects when we breathe in dust, and it’s not fully known as to what causes those allergies,” said Dr. Chellam.

“Some people may think it is just the sand or clay minerals in the dust. Others think it is the metals or organics in the dust, and then some think it’s the bacteria and fungi.”

The Saharan dust cloud carries vast amounts of sand particles that transport bacteria and fungi.

Dr. Chellam’s research uniquely addresses how Saharan dust storms introduce these microbes into North America.

What the dust storm from Sahara tells us

Dr. Chellam and his team analyzed samples from a Saharan dust event that reached Houston in 2018. They measured metals, bacteria, and fungi to investigate any connections.

Fascinatingly, their findings revealed strong links between the biodiversity of the microbes and specific elements, especially calcium.

While these elements occur naturally in the Sahara, they also exist in our local environments. Pinpointing the exact origin of the dust and its cargo remains a challenge that scientists continue to tackle.

Our air – Not as empty as we think

Perhaps the most startling discovery is that even seemingly lifeless clouds of dust brim with biological activity.

“A key takeaway from this study is that a lot of biodiversity is not scientifically described. It doesn’t have a name, it can’t be cultured, and because it can’t be cultured, it’s difficult to study,” explained Dr. Daniel Spalink, assistant professor at Texas A&M.

The team’s high-tech DNA analysis allowed them to create an inventory of bacteria and fungi, even if the microbes themselves weren’t active.

Surprisingly, they found traces of several pathogens known to cause disease in humans, as listed by the World Health Organization (WHO).

“It doesn’t tell us if they are going to be able to infect us and make us sick,” Spalink cautions, “But at least the DNA of several pathogenic bacteria and fungi were identified in the African dust.”

Impact of climate change on Sahara dust

Climate change is altering weather patterns globally. This transformation affects dust storm behavior, leading to variations in their frequency and intensity.

In 2020, the United States experienced the most massive Saharan dust storm ever recorded, which experts named “Godzilla.”

This event highlighted the potential for increasing occurrences of such dust invasions. “The whole dynamics of the Saharan dust coming to Houston is primarily driven by atmospheric processes,” said Dr. Sourav Das, a former student of Dr. Chellam.

Global connection of Sahara dust

Sahara dust storm travels far beyond the borders of North America, affecting global environmental systems in profound ways.

This dust, originating from the vast Sahara Desert, embarks on transcontinental journeys that influence climate, ocean biology, and ecosystems far removed from its source.

The Saharan dust plays a critical role in climate regulation. As it travels across oceans and continents, it reflects sunlight back into space, cooling the Earth’s surface.

This natural phenomenon acts as a counterbalance to the warming effects of greenhouse gases, showcasing how desert dust can influence global temperatures.

However, the dust also carries microorganisms and nutrients, such as phosphorus, that fertilize remote ecosystems, from the Amazon rainforest to the Caribbean Sea, demonstrating nature’s complex nutrient cycles.

Benefits to oceans

Ocean biology benefits from the nutrient-rich dust as well. When Saharan dust settles on ocean waters, it delivers essential minerals that stimulate the growth of phytoplankton.

These microscopic plants form the foundation of the oceanic food chain, supporting a diverse array of marine life.

The influx of nutrients from the Sahara can thus boost marine productivity, affecting fish populations and the global fishing industry.

Disadvantages

The impact of Saharan dust is not universally beneficial. In ecosystems unaccustomed to the influx of foreign particles and nutrients, the dust can disrupt local environments.

For example, excessive dust deposition can smother coral reefs, blocking sunlight and hindering photosynthesis. This can stress coral ecosystems, leading to bleaching events and loss of biodiversity.

Moreover, the health implications of Saharan dust extend across continents. The dust carries not only nutrients but also pollutants and pathogens that can affect air quality and public health.

Communities in the path of these dust plumes may experience increased respiratory issues, allergies, and diseases, highlighting the need for global health monitoring and preparedness.

Study insights

It’s crucial to gather data across multiple dust events, spanning many years, to get a clearer picture of these airborne microbial communities and how they might transform over time.

While a lot remains unknown, research like this shines a spotlight on the hidden travelers swirling in the air we breathe — travelers who might be affecting our health in surprising ways.

The next time you catch a glimpse of a dust storm rolling in, remember the globe-trotting microbes it carries!

The findings of the study are published in Environmental Science & Technology.

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What are the positive effects of Saharan dust on the environment?

delivers essential minerals for phytoplankton

carries microorganisms and nutrients that act as fertilizer

**Climate Regulation:** By reflecting sunlight back into space, Saharan dust can help cool the Earth's surface, counterbalancing some effects of global warming.

What are the positive effects of Saharan dust on the environment?

cools the Earth's atmosphere
reflects sunlight back into space

**Affected Areas:**
Saharan dust impacts a wide range of areas across the Americas, including the Caribbean, the Gulf Coast, and parts of the southeastern United States.

Title:

Content: 0

Layer of Saharan dust will affect the Bahamas by the weekend

By EARYEL BOWLEG

Tribune Staff Reporter

ebowleg@tribunemedia.net

RESIDENTS are urged to “safeguard their health” as a plume of Sahara dust moves over the south-east Bahamas.

The Department of Meteorology said the dust will gradually move across the country this weekend.

It warned the dust could be problematic for people with allergies and respiratory issues.

“Sahara dust is made of sand, dirt, and other dust particles that are lifted into the atmosphere from the vast Sahara Desert in Africa,” the advisory said.

Acting director of meteorology Jeffrey Simmons told The Tribune the dust tends to appear around this time every year.

He said the dust has lingered around southeastern islands for the past week, prompting some to complain about allergies.

“That’s the reason, you know, why we put out this warning alerting people about it, people who have these allergy issues or any respiratory issues so that they could, you know, be aware of the impact this could have on them for this weekend and possibly going into another week or two,” he said.

What areas of the Americas have been affected by Saharan dust storms?

What areas of the Americas have been affected by Saharan dust storms?

What areas of the Americas have been affected by Saharan dust storms?

**Health Advisories:** Issue warnings to residents, especially those with respiratory issues, to stay indoors and use air purifiers during high dust concentrations.

How can people protect their health during Saharan dust storms?

How can the authorities prepare for a Saharan dust storm?

implement a warning system
public awareness & education

How does Saharan dust affect immediate weather?

What are the negative health effects of Saharan dust?

**Monitoring and Forecasting:** Utilize satellite and atmospheric monitoring systems to predict dust events and inform the public and policymakers.

How can the authorities prepare for a Saharan dust storm?

**Infrastructure Readiness:** Ensure that power grids and traffic systems are prepared for potential disruptions caused by reduced visibility and air quality issues.

How can the authorities prepare for a Saharan dust storm?

How does Saharan dust affect immediate weather?

What are the negative effects of Saharan dust storm on infrastructure?


For instance, a study led by Marco Calabria found that listening to classical music in the background did not significantly improve learning levels among people with mild cognitive impairment (MCI).

However, individuals who regularly use music as an emotional regulator might experience enhanced memory performance when listening to high-arousal music.

Moreover, a study on musical tempo and cognitive processing speed found that fast-tempo music did not significantly affect processing speed compared to no music, while slow-tempo music resulted in slower processing speed.

For example, university research in France demonstrated that students who listened to music while reading scored higher on a questionnaire than those who read without music.

For instance, a study led by Marco Calabria found that listening to classical music in the background did not significantly improve learning levels among people with mild cognitive impairment (MCI).

Title:

Content: 4/25/23 · Research

The beneficial effects of music on memory may depend on how it is listened to

The initial results of the study of the 'Mozart effect' on neurodegeneration show that listening to classical music in the background has no benefits for learning
The research has been carried out with people experiencing mild cognitive impairment, and it did find individual differences when listening to 'high-arousal' music

Listening to 'high-arousal' music could have a positive effect on memory for people who are accustomed to using music as an emotional regulator (Image: Clem Onojeghuo, Unsplash)

Given the lack of effective treatments to counteract cognitive impairment, background music has traditionally been proposed as a possible therapeutic alternative for improving memory-related tasks. Its effect has long been the focus of debate, but this relationship has now been found to be possibly determined by new interindividual parameters, which means that it may be more complex than was previously thought. This is shown by research led by Marco Calabria, a researcher in the Cognitive Neurolab group of the Faculty of Health Sciences at the Universitat Oberta de Catalunya (UOC), who is now considering new experiments.

The initial results of the Mozart effect and memory in patients with cognitive impairment (MEM-COG) study, funded by the Spanish Ministry of Science and Innovation, suggest that listening to background classical music while performing memory tasks neither improves nor impairs learning levels among people with mild cognitive impairment (MCI). However, listening to more 'high-arousal' music was found to have a possible positive effect on people who are accustomed to using music as an emotional regulator in their everyday lives, which suggests there is potential for further hypotheses and research.

The study, which has been published as open access in the Journal of Alzheimer's Disease, was carried out with patients at the neuropsychology unit of Barcelona's Hospital de Sant Pau, and involved researchers at the hospital, Montreal's Concordia University and Madrid's Gregorio Marañón Health Research Institute.

There is no universal effect

"We found no general impact concerning the effect of music in terms of whether it had positive or negative effects on learning in cases of MCI, but we did find that it would be modulated for each individual. If people regularly use music as an emotional regulator in their daily life, such as to help them remain calm or for company, they will find it easier to obtain further benefits from music when they have to learn something new," explained Calabria, who has a PhD in Psychobiology.

The subjects of the study were people with mild amnestic cognitive impairment, i.e. they have memory problems as a result of an onset of neurodegeneration that is more specific in the parts of the brain dealing with aspects of learning and memory. The experiments consisted of observing 24 photographs of human faces. Participants were instructed to memorize them, and 10 minutes later, they were asked to look at a new series containing the previous 24 images and 24 new ones, in order to attempt to identify the ones that they had already seen.

A classical choice

The first test was performed with the subjects listening to classical music in the information consolidation phase but not in the recovery phase, while in the second exercise it was repeated with the auditory stimulus during both phases. However, no significant differences were observed in terms of results.

Classical music was used in these exercises because "it's a type of music that falls between relaxing and arousing, and has proven to be the most effective for enhancing memory". Furthermore, the fact that it is instrumental reduces the interference (that can come from lyrics) with the content that the participants have to learn in the memory task.

A ray of light

However, Calabria's team wanted to carry out a third experiment using popular music which was considered arousing rather than relaxing, and after a preliminary study, they used an instrumental version of Un rayo de sol (A ray of light), by the group Los Diablos. In that experiment, according to Calabria, the results suggested that "the use of music as a strategy for mood regulation is associated with better performance in memory tasks."

Ongoing research

This finding opens up the possibility of further research to continue exploring the role of interindividual preferences and attitudes towards music among patients with MCI. The group plans to continue the project until late 2024.

During this time, it will investigate whether background music could be more useful in other cognitive domains, such as in attention and concentration in patients with Parkinson's disease. The experiments will also involve the use of a new infrared spectroscopy device in the Neuro Lab, one of the recently opened new laboratories at the UOC, which will show the activation at the cerebral level while cognitive processes are taking place. This will help to determine whether or not there are any alterations in the brain's modulation, in which areas this takes place, and whether it depends on the type of person studied, regardless of the level of response to music.

In overall terms, this will help to find a type of marker which determines the people most likely to benefit from music in cognitive tasks. "The more we know about how background music shapes cognitive processes, the better the use we can make of music as a therapeutic tool in cognitive stimulation," concluded Calabria, an expert in the study of cognitive processes and a member of teaching staff on the UOC's Master's Degree in Neuropsychology.

This research project receives funding from the Ministry of Science and Innovation of the Government of Spain, and contributes to Sustainable Development Goal (SDG) number 3, Good health and well-being.

Reference article:

Calabria, Marco et al. 'Background Music and Memory in Mild Cognitive Impairment: The Role of Interindividual Differences'. 1 Jan. 2023: 815 – 829. DOI: 10.3233/JAD-221051

Press contact

Sònia Armengou Casanovas
sarmengouc@uoc.edu
+34 619 413 823

UOC R&I

The UOC's research and innovation (R&I) is helping overcome pressing challenges faced by global societies in the 21st century by studying interactions between technology and human & social sciences with a specific focus on the network society, e-learning and e-health.

Over 500 researchers and more than 50 research groups work in the UOC's seven faculties, its eLearning Research programme and its two research centres: the Internet Interdisciplinary Institute (IN3) and the eHealth Center (eHC).

The university also develops online learning innovations at its eLearning Innovation Center (eLinC), as well as UOC community entrepreneurship and knowledge transfer via the Hubbik platform.

Open knowledge and the goals of the United Nations 2030 Agenda for Sustainable Development serve as strategic pillars for the UOC's teaching, research and innovation. More information: research.uoc.edu.

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However, individuals who regularly use music as an emotional regulator might experience enhanced memory performance when listening to high-arousal music.

Moreover, a study on musical tempo and cognitive processing speed found that fast-tempo music did not significantly affect processing speed compared to no music, while slow-tempo music resulted in slower processing speed.

Title:

Content: SAFETYLIT WEEKLY UPDATE

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Journal Article

Citation

Lin HM, Kuo SH, Mai TP. Front. Psychol. 2023; 14: e998460.

Copyright

(Copyright © 2023, Frontiers Research Foundation)

DOI

10.3389/fpsyg.2023.998460

PMID

36910785

PMCID

PMC9998681

Abstract

The effects of musical tempo on cognitive processing speed were investigated, and the mediating effect of arousal was empirically tested. In an experiment, participants were divided into fast tempo, slow tempo, and no-music groups and completed three cognitive processing speed tests measuring motor speed, visuospatial processing speed, and linguistic processing speed. The results indicated a significant effect of musical tempo on processing speed and task performance in all three tasks. The slow-tempo group exhibited slower processing speed and worse performance than the no-music group in all three tasks. The fast tempo group displayed no significant difference in processing speed or performance compared with the no-music group. In the linguistic processing task, those who listened to slow-tempo music had better accuracy than those in the other conditions. Arousal did not mediate the relationship between musical tempo and cognitive processing speed.

Language: en

Keywords

arousal; accuracy; cognitive processing speed; musical tempo; task performance

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For example, university research in France demonstrated that students who listened to music while reading scored higher on a questionnaire than those who read without music.

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The Sound of Success: Ideas in Music for Concentration and Productivity

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Does music help you concentrate? Since we spend a lot of time in front of computers trying to finish our work, wouldn’t it be nice to listen to some of music to help concentrate? Well, music lovers, it seems like Mozart and Beethoven could actually help you with your productivity. Beethoven once said: «Music is where the spirit lives, thinks and invents.»

This relationship between music and the brain is an area that has been intensively explored in research. Many studies point to the ability of music to help employees be more productive and help children in their learning process more effectively. University research in France found that students who listened to music for an hour while reading, scored significantly higher on a questionnaire compared to a group of students who read without music.

Your attention span is better when listening to music

It seems that music for concentration puts students in a heightened emotional state, so that they can be more receptive to information. «It is possible that music causes a change in the learning environment and influenced students’ motivation to stay focused while reading, which led to better performance on a multiple-choice questionnaire,» concluded the french research team in a recent article.

But before you start playing any type, you have to find the music that works better for the type of work you are trying to carry do. For example, the classic from the Baroque period is said to do wonders for brain activity when you are studying or writing. But not all classical music is created equal, so dramatic changes and complicated fugue changes may not be as conducive as a smooth piano piece. So if you have to choose a composer, we would say Mozart. There seems to be evidence that Mozart’s improves mental performance: it is called «The Mozart Effect”.

Build a harmonious space

If you don’t like classical, the discreet sound found in ambient music may work well for you instead. What is the purpose of this if you are not at the airport, you ask? Well, for creative purposes, it’s better than emptiness and silence. According to one of its pioneers, musician Brian Eno: “Background music must be able to accommodate many levels of attention when listening, without forcing one in particular. It must be as ignorable as it is interesting ”.

In fact, researchers have shown that a moderate level of noise, such as that found in the environment, can actually get creative juices flowing. Music with especially low-lows or especially high-highs should be avoided. Certain types of jazz instrumental melodies can also get your brain working.

Music without lyrics

In general, if you are doing work that requires writing, you should avoid listening to music with lyrics as the words in a song are especially destructive to your concentration. Since hearing words activates the brain’s language center, attempting to perform tasks related to another language would be like trying to have a conversation while someone else is speaking to you. But, if you are a cartoonist, and you don’t deal with sentence construction, hearing letters may not have the same effect.

Finally, studies show that listening to music you’re already familiar with may be better if you really need to focus. New songs take you into the unknown and your brain will want to listen closely to see what comes next. With the music you are familiar with you know what to expect, so it doesn’t distract you from your work. And if you like the tune you’re listening to try not to whistle it while you work, as that will only distract you.

The post The Sound of Success: Ideas in Music for Concentration and Productivity appeared first on Mundo Hispanico

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For cephalopods, such as octopuses and cuttlefish, acidification can affect their ability to build and maintain their shells, as seen in other marine calcifiers like pteropods, which are crucial to the marine food web.

The acidification process makes it energetically costly for organisms to mineralize, leading to the dissolution of calcium carbonate shells and skeletons.

The reduction in sea ice due to warming and acidification impacts their habitat and food sources.

Additionally, the increase in dead zones, areas with low oxygen due to algal blooms exacerbated by acidification, creates biological deserts where marine life struggles to survive.

Strategies like adding calcium carbonate to sediments have been explored to mitigate these effects.

Kelp cultivation has shown promise in reducing local acidification and supporting bivalve growth.

It's crucial to raise awareness and take collective action to address these challenges.

For cephalopods, such as octopuses and cuttlefish, acidification can affect their ability to build and maintain their shells, as seen in other marine calcifiers like pteropods, which are crucial to the marine food web.

Title:

Content: Newswise — When carbon dioxide (CO2) enters the oceans, it can make the water more acidic, which is called ocean acidification. This can make it harder for some ocean creatures, like pteropods, to build and keep their shells. Pteropods are important for the ocean environment.

Pteropods are small sea creatures, including shelled sea butterflies. Not much is known about them because of their size, and they don't survive well in captivity. A team of marine scientists studied the life cycles, abundance, and seasonal changes of shelled sea butterflies in the north-east Scotia Sea, where climate change is happening quickly.

Dr Clara Manno, a researcher at the British Antarctic Survey and the corresponding author of the study published in Frontiers in Marine Science, said that the decrease in pteropod populations in the Antarctic Ocean could have significant consequences for the food web and carbon cycle. She also said that understanding the life cycle of this important organism could help to predict the impact of ocean acidification on the Antarctic ecosystem.

Population stability essential for species survival

To study the life cycle, abundance, and seasonal variability of shelled sea butterflies in the north-east Scotia Sea, a team of marine scientists collected sea butterflies in a sediment trap, a sampling device that was anchored at a depth of 400 meters. Since observing the entire life cycle of sea butterflies in a laboratory setting is impossible, the researchers had to gather information about their spawning, growth rate, and population structure. They were able to reconstruct the sea butterflies' life cycle for a year using the samples from the sediment trap.

The scientists found that the two most commonly collected species, Limacina rangii and Limacina retroversa, have different life cycles and therefore have different levels of vulnerability to changes in the ocean. During the winter months, L. rangii, which is a polar species, can be found as both adults and juveniles, while L. retroversa, a subpolar species, is only found as adults during the winter.

Sea butterflies that exist during the coldest season are more vulnerable to increased levels of ocean acidification. This is because ocean water is more acidic during this season than during other times of the year due to cooler temperatures that increase CO2 dissolution in the ocean. The researchers explained that the life stages of sea butterflies during this time are more exposed and vulnerable to the effects of ocean acidification.

L. rangii has a survival advantage over L. retroversa because both adults and juveniles coexist during winter, which reduces the risk of population instability if one cohort is vulnerable. In contrast, if one cohort is removed from L. retroversa, the entire population could be at risk.

Prolonged exposure is a survival challenge

The researchers pointed out that although the two species are affected differently, both are likely to suffer harm if they are exposed to unfavorable conditions for prolonged periods.

The scientists cautioned that the intensifying and prolonged events of ocean acidification overlap with the spring spawning period, posing a threat to the most vulnerable life stage, the larvae. This could endanger the future populations of sea butterflies.

The research team plans to further study the sea butterflies in the Scotia Sea to see how they would be affected by the increase in the intensity and duration of ocean acidification events. They will study multiyear sediment trap samples to identify potential changes in the life cycle that may occur due to environmental changes. Dr Jessie Gardner of the British Antarctic Survey, lead author of the study, said this will be the next step in their research.

Journal Link: Frontiers in Marine Science

Which marine organism is vulnerable to increased levels of ocean acidification?

The acidification process makes it energetically costly for organisms to mineralize, leading to the dissolution of calcium carbonate shells and skeletons.

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Content: There were 1,862 press releases posted in the last 24 hours and 393,697 in the last 365 days.

Utilizing biogeochemical and genetic tools to understand and support clam populations in a changing ocean

Marine bivalves are at risk due to anthropogenic climate change. This poses a threat to commercial aquaculture, and the communities that depend on bivalves for food security. Ocean acidification, the lowering of seawater pH, is of particular concern for marine calcifiers, including bivalves. Ocean acidification occurs as carbon dioxide enters the atmosphere at a rate faster than natural geologic processes can buffer. It is energetically costly for marine calcifiers like clams, mussels, and oysters, to mineralize under acidic conditions, and low pH leads to the dissolution of calcium carbonate shells and skeletons. This problem warrants research on acidification adaptation strategies that will keep coastal populations healthy. Adding calcium carbonate shell hash to coastal sediments may mitigate negative effects of acidification on infaunal shellfish by altering the chemistry of pore fluids, thus providing a potential mitigation strategy for local populations, including species like the Pacific littleneck clam (Leukoma staminea).

Here, I present the first in-depth description of the shell mineralogy, microstructure, body size variability, and geochemical properties of modern L. staminea, a common eastern Pacific, shallow, infaunal bivalve. Additionally, I document the impact of ocean acidification on the shell growth and gene expression of L. staminea, and test whether adding shell hash to its infaunal environement can promote growth under acidified conditions. Juvenile clams were raised in four experimental conditions for 90 days: control seawater, acidified seawater, control seawater with shell hash, and acidified seawater with shell hash. Clam shell weight, soft tissue weight, and new shell growth were measured. The presence of shell hash increased the pH, alkalinity and aragonite saturation state of pore fluids across all treatments, and increased shell growth on average, although growth metrics were variable across and within treatments. Lastly, RNA-sequencing revealed the impacts of experimental acidification on juvenile clam gene expression. Clams grown in the presence of shell hash had gene expression profiles more similar to those grown in control (non-acidified) conditions. In all, this research suggests that adding shell hash to coastal sediments alters the chemistry of pore fluids and buffers against acidic conditions that deleteriously affects clam mineralization.

Kempf H., 2024. Utilizing biogeochemical and genetic tools to understand and support clam populations in a changing ocean. PhD Thesis, University of California, Davis. 33 p. Thesis (restricted access).

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How does coastal ocean acidification affect shellfish?

What factors lead to damage of coral reefs?

The reduction in sea ice due to warming and acidification impacts their habitat and food sources.

Title:

Content: How climate change and warming waters are affecting the health of the oceans

(NEW YORK) — Oceans do so much to sustain life on Earth, including bearing the brunt of global temperatures that have been steadily warming for decades.

An IPCC special report published in 2019 found that oceans — which make up more than 70% of the world’s surface — have absorbed between 20% and 30% of human-made carbon dioxide emissions since the 1980s. They’re also responsible for absorbing more than 93% of the “combined heat stored by warmed air, sea, and land, and melted ice” since the 1970s, according to the Fifth Assessment report published in 2013 by the United Nations Intergovernmental Panel on Climate Change.

The tipping point is near, experts told ABC News. But there are collective actions to take that could revitalize oceans to a healthier state — the theme of the United Nations World Oceans Day 2022.

“We really see oceans as the biggest ally in the climate change crisis,” Lea d’Auriol, founder of nonprofit Oceanic Global, told ABC News.

This is how climate change is affecting the health of the world’s oceans:

Species are faced with adapting or becoming extinct

Currently, the oceans “are in a state of complete imbalance” that has nearly doubled since the 1990s, d’Auriol said. Look no further than the fishermen, who supply sustenance to more than three billion people who rely on seafood as their main source of protein, as witnesses that climate change is already here, d’Auriol, said.

“If you wanted to ask someone if climate change is really happening, probably the most surest answer you’d get from anyone aside from a scientist is a fisherman,” Arlo Hemphill, senior oceans campaigner for Greenpeace USA, told ABC News. “Because fishermen are seeing these things happen in real time.”

One of the changes long-time fisherman are witnessing is the presence of new species venturing north as the area with their preferred water temperature expands.

Marine organisms maintain the same temperature as the surrounding water, so that when temperature increases, so does the temperature of the organism, Martin Grosell, professor of ichthyology and chair of the University of Miami’s Department of Marine Biology and Ecology, told ABC News. As the temperature rises, the organisms require more energy to move and survive. But, conversely, the levels of oxygen in the water decrease as the temperature warms, forcing the species to move, Grosell said.

The migrations may seem innocuous, but they are disrupting ecosystems all over the world, such as the phenology, or timing, of when grey seals give birth, Hemphill said.

Conversely, species are continuing to die off due to repeated events of marine heatwaves, Anne Christianson, director of international climate policy for the Center for American Progress, a public policy research organization, told ABC News.

Coral reefs are among the most threatened marine ecosystems in the world, scientists say. Coral bleaching, a process that occurs when water is too warm and the corals expel algae from their tissues, causing them to turn completely white, is happening at “alarming” rates — increasing by a rate of 4% per year — along with an uptick in mortality events along entire regions, d’Auriol said.

A study published in the National Academy of Sciences found that coral reefs could stop growing in 10 years unless greenhouse gases are significantly reduced and that, under a worst-case scenario, 94% of all reefs could erode by 2050.

Reefs are often the indicator of the health of an ecosystem, Brenda Ekwurzel, director of climate science for the Union of Concerned Scientists, told ABC News.

Mammals that rely on Arctic ice, such as polar bears and ringed seals, one of the polar bears’ main food sources that live their lives almost entirely on the ice, are also at risk, Ekwurzel said.

Vegetation such as mangroves, seagrass plants and marshes, some of the largest carbon sinks on the planet, which absorb and store carbon dioxide from the atmosphere, are also at risk of extinction, d’Auriol said.

The number of dead zones are increasing

A dead zone, or the process of hypoxia, occurs when an algal bloom sucks up all the oxygen in an area, making it impossible for marine life to survive — essentially a biological desert, according to the National Oceanic and Atmospheric Administration.

A study published in 2008 in Science found that there were 400 dead zones around the world. By 2019, the number of dead zones had increased to about 900, d’Auriol said.

The dead zones often occur in regions with rampant nutrient runoff, such as at the base of the Mississippi River, where it empties into the Gulf of Mexico, Hemphill said.

Sea level rise will change coastal communities

The biggest contributor to sea level rise is the melting ice in the Arctic, which is heating up twice as fast as the rest of the world, according to the 2021 Arctic Report Card by NOAA. Increases in sea level rise of 6 inches to a foot since the Industrial Revolution may seem like small increments, but crucial infrastructure near oceans was not built to withstand the added inches of water, experts say.

Millions of people living in coastlines around the world, including those in mega cities such as New York, Los Angeles and San Francisco, will be displaced by the rise in sea levels, d’Auriol said.

Carbon dioxide emissions sparks ocean acidification

Ocean acidification, which occurs when water’s pH levels are lowered as a result of carbon dioxide in the atmosphere, is not directly caused by warming temperatures but rather by excess carbon dioxide emissions, Hemphill said.

“The alarming thing about it is that shellfish everything from from microscopic plankton, to clams and crabs and coral reefs themselves use calcium carbonate to build their shells,” he said. “And as the ocean acidifies, it becomes more difficult to create the shells.”

Ocean acidification, rather than coral bleaching, will likely be the culprit behind the demise of coral reefs, Ekwurzel said.

Collective actions are necessary to protect the oceans

In line with the 2022 theme for World Oceans Day, “Revitalization: Collective Action for the Ocean,” scientists and conservationists are highlighting the need for individuals, communities, nonprofits, the private sector and governments to come together to create solutions, d’Auriol said.

This includes ensuring the health of marine protected areas by eliminating housing, fishing zones and shipping traffic in the vicinity, d’Auriol said.

Governments will need to create policies to protect both human life and the health of the ocean, Christianson said.

“There isn’t one silver bullet for solving this crisis in the ocean and on land,” Christianson said.

However, the ticking time bomb is the race to drastically reduce global greenhouse gas emissions within the next decade, the experts said.

“We can’t afford to delay those solutions any longer,” Ekwurzel said.

Along the path to properly protecting and preserving oceans is ridding the narrative that oceans are a separate environmental issue from climate change and the conservation of biodiversity, d’Auriol said.

“Because we do live on a water planet, and it’s responsible for sustaining all life on Earth,” she said.

Copyright (C) 2022, ABC Audio. All rights reserved.

How do scientists expect ocean acidification to impact specific fish species?

Which regions are most affected by ocean acidification?

Additionally, the increase in dead zones, areas with low oxygen due to algal blooms exacerbated by acidification, creates biological deserts where marine life struggles to survive.

How do scientists expect ocean acidification to impact specific fish species?

How does elevated water acidity affect fish ability to survive?

Strategies like adding calcium carbonate to sediments have been explored to mitigate these effects.

Kelp cultivation has shown promise in reducing local acidification and supporting bivalve growth.

Title:

Content: Newswise — STONY BROOK, NY, May 25, 2022 – While kelp is known as a nutritious food item for sea creatures and humans alike, harvesting kelp may be a new way to help keep bivalves such as clams and oysters – a more common food source and marine industry staple – healthy and more abundant. A new study led by Christopher Gobler, PhD, and a team of scientists at the Stony Brook University School of Marine and Atmospheric Sciences (SoMAS) shows that the presence of kelp significantly reduces ocean acidification, a result of climate change.

Published in Frontiers in Marine Science, the study also demonstrated that the deployment of kelp on an oyster farm nullifies ocean acidification and therefore protects bivalves against acidification. The process may also have additional ecosystem and aquaculture benefits, including the sequestration and extraction of carbon and nitrogen, and protection against harmful algae blooms.

For shellfish, one of the most serious climate change-related threats is ocean acidification. Carbon dioxide or CO2 levels in Earth’s atmosphere continue to rise, infiltrating oceans where it causes chemical reactions that lower pH and cause ocean acidification. For the past two decades, one of the most robust conclusions of ocean climate change research has been that increasing levels of CO2 in surface waters threaten shellfish that rely on higher pH waters to grow and survive. This threat is particularly acute in coastal zones where additional sources of acidity can further reduce pH and slow shell formation in shellfish, especially bivalves. And while many wild populations of bivalves have collapsed, a burgeoning wave of aquaculture in the U.S. and around the World has caused the global production of seafood via aquaculture to grow and now exceed wild capture.

“Despite this wave of aquaculture, the intensification of ocean acidification now threatens bivalve aquaculture and has necessitated a solution,” explains Professor Gobler, the Endowed Chair of Coastal Ecology and Conservation at SoMAS.  “We believe our work is foundational to a solution.”

In the study, titled “Kelp (Saccharina latissima) Mitigates Coastal Ocean Acidification and Increases the Growth of North Atlantic Bivalves in Lab Experiments and on an Oyster Farm,” Professor Gobler and colleagues conducted six experiments to assess the effects of elevated CO2 and presence of kelp (S. latissima) on the growth rates of three different species of bivalves: (Eastern oysters (Crassostrea virginica), blue mussels (Mytilus edulis), and hard clams / Northern quahogs (Mercenaria mercenaria).

In each of the experiments, acidification was significantly reduced with the cultivation of kelp. They furthered the research with the ultimate test – a field experiment at the Great Gun oyster farm in Moriches Bay, New York.

They found that during a one-month deployment, oysters that were surrounded by kelp enjoyed higher pH water and grew significantly faster than individual shellfish located further away where the pH of the water was significantly lower.

Professor Gobler and colleagues emphasize that these findings have powerful implications for oyster farming in coastal zones.

“We have been witnessing coastal ocean acidification for years and have documented its ability to slow the growth, and even kill off, shellfish. We began growing kelp on oyster farms to simply expand aquaculture, regionally. After seeing its ability to rapidly take up CO2 and improve low pH conditions, we knew it had the potential to benefit shellfish experiencing acidification. And while showing that in the lab was exciting, being able to improve the growth of oysters on an oyster farm experiencing coastal acidification proves this approach can have very broad applications,” explains Professor Gobler.

Overall, the research clearly shows, according to the authors, that “the cultivation of kelp constitutes an environmentally friendly means of protecting shellfisheries against present and future ocean acidification and other coastal stressors.”

Building on the work, helping the oyster farms

“We’ve helped grow kelp on 10 oyster farms across New York since 2018 and more and more aquaculturists have been hoping to incorporate kelp into their farms,” says Mike Doall, Associate Director of Shellfish Restoration and Aquaculture at Stony Brook University. “In addition to providing crop diversification and additive revenue streams, the ability of kelp to fight ocean acidification gives these oyster farmers one more reason to add kelp as a second crop.”

The recent study builds on other research by the same SoMAS group, which published a study in Harmful Algae in 2021. That study demonstrated that kelp has the ability to deter the intensity of harmful algal blooms, another environmental threat to shellfish aquaculture.

Such scenarios with kelp appear to create a win-win scenario for oyster farmers like Paul McCormick, owner of the Great Gun oyster farm where the current study was performed.

“Kelp looks to be the perfect complement to oysters on my farm,” says McCormick. “It grows during winter and spring, when the oysters need less attention, and there is lots of interest in kelp from restaurants. If it is offering protection to my oysters against poor water quality, well that’s another good reason to add it to my farm.”

Citations:

Young, C. S., Sylvers, L. H., Tomasetti, S. J., Lundstrom, A., Schenone, C., Doall, M. H., & Gobler, C. J. (2022) Kelp (Saccharina latissima) mitigates ocean acidification and increases the growth of North Atlantic bivalves in lab experiments and on an oyster farm. Frontiers in Marine Science, Volume 9 | Article 881254

Sylvers, P. H., & Gobler, C. J. (2021). Mitigation of harmful algal blooms caused by Alexandrium catenella and reduction in saxitoxin accumulation in bivalves using cultivable seaweeds. Harmful Algae, 105, 102056.

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Frontiers in Marine Science

It's crucial to raise awareness and take collective action to address these challenges.