Articles tagged with Phytoplankton
Scientists at MIT explain how thin layers of single-celled organisms form at sea and can trap phytoplankton, leading to harmful algal blooms. This research brings the scientific community closer to predicting these events and has implications for other ecological phenomena.
Researchers have discovered phytoplankton in the Sargasso Sea that build cell membranes without phospholipids, using substitute lipids instead. This finding has significant implications for our understanding of cell biochemistry and could lead to rewriting fundamental principles.
Scientists found that natural iron fertilization enhanced phytoplankton growth and productivity in the Southern Ocean, leading to two to three times more carbon export to the deep ocean. The research suggests that ocean islands are a key source of iron for these blooms.
Research suggests that healthy adult haddock can produce more eggs of higher quality, leading to larger and better-conditioned offspring. This finding could significantly impact haddock stocks on Georges Bank.
A new study reveals that picophytoplankton species' tolerance of high light can explain their ocean-wide distribution. Different regions have distinct abilities to cope with variable light through rapid repair, driven by nutrient availability.
Researchers found that Phaeocystis globosa can change its colony formation based on the presence of nearby grazers, enhancing or suppressing colonies to avoid being eaten. This complex defensive behavior has implications for global climate change, as Phaeocystis blooms play a key role in the carbon cycle.
Tiny green algae, known as picophytoplankton, play a significant share of the world’s total photosynthetic activity. Their genome structure and metabolic capabilities have been studied, revealing adaptations to different ecological niches.
A new ocean model at MIT captures the diversity of underwater forests, simulating the growth and population patterns of microscopic plants that produce half the oxygen we breathe. The model's approach reflects natural selection, allowing for a more accurate representation of real-world ecosystems.
A study by Oregon State University scientists found that iron-rich winter runoff from Pacific Northwest streams and rivers fertilizes the nearshore Pacific Ocean, leading to robust phytoplankton production and fisheries. The researchers discovered that the iron is trapped on the continental shelf in the winter, but released during summ...
A NASA study reveals that climate warming leads to a decline in ocean's primary food supply, phytoplankton, which is responsible for photosynthesis. This reduction affects fishery yields, marine bird populations, and carbon dioxide removal from the atmosphere.
New satellite data show that ocean warming is reducing phytoplankton growth, imperiling ocean fisheries and marine life. Phytoplankton are responsible for about the same amount of photosynthesis as all plants on land combined, making their decline a significant threat to the food chain.
A 10-year satellite-based analysis found that global warming reduces marine life and phytoplankton production, which removes carbon dioxide from the atmosphere and fuels ocean ecosystems. This study reveals a tight link between climate change and ocean productivity, highlighting the importance of understanding this feedback mechanism.
A new mechanism has been discovered linking chemical emissions from ocean phytoplankton to increased cloud cover, which could impact global climate models. The study found that airborne particles produced by oxidation of the chemical isoprene may contribute to a doubling of cloud droplet concentrations.
A groundbreaking FSU-led study calculates that phytoplankton generates about five times the annual total power consumption of humans, investing around one percent in mechanical energy. The findings suggest that the marine biosphere's mixing patterns may equal climate control, with potential implications for global climate regulation.
Scientists determined that nitrogen is the primary element missing for algae growth in the northern tropical Pacific, while iron was lacking everywhere else. The 'iron-effect' decreases carbon ocean plant photosynthesis estimates by two billion tons, allowing for more accurate carbon movement modeling and resource management.
A new study found that large segments of the Pacific Ocean lack sufficient iron to trigger healthy phytoplankton growth, leading to overestimated ocean productivity. The researchers estimate a 2-4% reduction in global ocean carbon uptake due to this oversight.
Researchers found that phytoplankton communities transiently disappear and then recover during abrupt climate changes, with most species adapting to new niches. The study suggests that phytoplankton are more resilient than previously thought, with only specialized and deeper-dwelling species being unable to survive sudden changes.
Phytoplankton population and size can change dramatically due to El Niño and La Niña events, affecting ocean ecology and influencing the climate. These changes impact carbon storage in the ocean, which in turn helps stabilize carbon dioxide concentrations in the atmosphere.
A decline in winter and spring snow cover over Southwest Asia and the Himalayan mountain range creates conditions for widespread blooms of ocean plants in the Arabian Sea. This is due to increased temperature and pressure differences between the Indian subcontinent and the Arabian Sea, leading to monsoon winds that mix the ocean water.
A study by Oregon State University suggests that ocean currents could disrupt the marine food chain, leading to a decline in phytoplankton productivity. The Atlantic Conveyer current, which warms Europe, is a critical component of this process, and its disruption could have far-reaching consequences for global food security.
A new study by Stanford University scientists presents direct evidence linking large-scale coastal farming to massive algal blooms in the sea. Highly productive regions of the ocean are found to be more vulnerable to agricultural runoff than assumed.
Phytoplankton amounts have increased globally by over 4% along coastal regions, while declines were observed in mid-ocean gyres. This shift may indicate changes in the biology of oceans, particularly in coast regions, and has implications for ocean ecosystems and climate change.
Researchers developed a new method to measure phytoplankton growth rates and biomass using satellite data, providing insights into the Earth's oceans. This discovery has significant implications for understanding marine ecosystems, fisheries, and climate change.
A study by Andrew Bakun and Scarla Weeks found that overfishing sardines can prevent phytoplankton population explosions, which release methane and hydrogen sulfide. The authors warn that areas around California and Africa are at risk of a tipping point, where upwelling processes intensify climate change.
A new NASA tool called Giovanni allows high school and college students to access and analyze satellite-derived ocean color data, providing insights into ocean biology. The tool uses chlorophyll patterns to study phytoplankton growth and its connection to El Nino/La Nina events.
Agricultural runoff from Mexico's Yaqui River Valley has been found to directly trigger massive algal blooms in the Sea of Cortez, potentially harming ocean life and fisheries. The study, published at the AGU meeting, provides evidence of a one-to-one correspondence between irrigation events and algal blooms.
Researchers used NASA's MODIS instruments to study dark water patches off the Florida coast, detecting glowing phytoplankton blooms. The findings suggest a connection between rivers and the ocean ecosystem, highlighting the need for coordinated efforts to mitigate black water events.
Modern phytoplankton's evolutionary history reveals that their ancestors did not appear until 250 million years ago. The study found that changes in sea level, water chemistry and carbon-dioxide levels contributed to the rise of dominant phytoplankton groups.
Hurricanes stimulate phytoplankton growth, leading to increased chlorophyll levels and carbon dioxide absorption. Bigger storms cause larger blooms, affecting the upper ocean's ecology and potentially influencing climate change.
Researchers found a broad range of nitrogen-to-phosphorus ratios possible in phytoplankton, contradicting the long-held Redfield ratio of 16:1. The new model takes into account varying growth conditions and optimal strategies for nutrient uptake, with implications for ocean ecosystem and climate change.
Phytoplankton in the Sargasso Sea produce organic sulfur compounds as a defense mechanism against UV radiation, leading to increased cloudiness and mitigating global warming effects. The discovery provides new insights into the DMS-climate feedback hypothesis.
Scientists investigate iron fertilization to remove carbon dioxide from the atmosphere by boosting phytoplankton photosynthesis. However, the process is hindered by zooplankton consumption and limited sinking of plant material.
Researchers found that nutrient-poor ocean areas have 'hot spots' of high chlorophyll concentrations, likely due to concentrated floating organic particles. This phenomenon improves our understanding of marine ecosystem processes and has significant applications for fishing and tuna stock management.
The study found a strong association between Adelie Penguin populations and the productivity of plankton in coastal polynyas. These 'oases' provide ideal conditions for phytoplankton blooms, which feed krill that are then eaten by penguins.
A massive iceberg drifted into the Ross Sea, blocking sunlight and preventing phytoplankton growth, which are a critical food source for krill and other marine animals. This event had a significant impact on the entire food chain in the Ross Sea.
A massive Antarctic iceberg, C-19, blocked the movement of sea ice in the Ross Sea region, resulting in unusually high sea-ice cover and a significant reduction in primary production. This study used satellite imagery and chlorophyll data to quantify the effects of the iceberg on phytoplankton growth.
Phytoplankton's shift to red pigments occurred due to a global ocean oxygen depletion, which paved the way for their evolution. This discovery reveals how the ocean's chemistry has been dominated by red phytoplankton ever since.
Researchers sequenced the genomes of three Prochlorococcus and one Synechococcus strains, revealing insights into their metabolic machinery and ecological niches. The discoveries may aid studies on global climate change and sustainable energy production.
Phytoplankton communities fix carbon half as fast at pH 9, while dinoflagellates correlate strongly with high pH levels. Increased nutrient loading increases pH variability, affecting coastal ecosystems.
A new study by Scripps researchers reveals that phytoplankton capture and absorb solar radiation, contributing to a global warming of 0.1-0.6 degrees Fahrenheit. The findings challenge iron fertilization efforts aimed at reducing global warming, suggesting this approach may actually contribute to warming the ocean.
Iron fertilization of phytoplankton could lead to changes in atmospheric composition and climate, potentially offsetting CO2 removal benefits. This may also result in significant warming of ocean surface waters, affecting oceanic circulation and the climate.
Phytoplankton levels have dropped by over 30% in the North Pacific Ocean and 14% in the North Atlantic since the mid-80s, while summer plankton concentrations rose by 50% in the Northern Indian and Equatorial Atlantic Oceans. These changes are linked to regional climate shifts, including warmer sea surface temperatures and reduced winds.
Researchers compiled a list of 46 phytoplankton species potentially toxic to humans and marine life, highlighting the need for monitoring programs. The study's findings emphasize the economic cost of harmful algae blooms and their potential impact on global climate modification.
A study using satellite ocean color data has shed light on the spring bloom of phytoplankton in the North Atlantic, a critical factor in the carbon cycle and global warming. The research found that simple models can accurately predict the timing of the bloom, with plankton animals and bacteria playing a key role in its duration.
Researchers used satellite imagery to study the effects of an iceberg on a marine ecosystem in Antarctica. The study found that extensive ice cover reduced phytoplankton production by 40% and affected the entire food chain from krill to fish, seals, whales, penguins, and other species.
Large icebergs from Antarctica's Ross Ice Shelf are dramatically affecting the growth of minute plant life in the ocean, with a 40% reduction in phytoplankton blooms observed. The icebergs block normal drift of pack ice, reducing open water and altering the marine ecosystem.
Phytoplankton, tiny marine plants and bacteria, have evolved to stabilize the Earth's atmosphere by regulating atmospheric carbon dioxide levels. They convert sunlight into oxygen and sequester carbon deep in the ocean, influencing climate regulation.