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Ocean Health

All articles tagged with #ocean health

NASA’s ISS deorbit plan triggers ocean-health warnings
space21 days ago

NASA’s ISS deorbit plan triggers ocean-health warnings

NASA plans to deorbit the International Space Station in the late 2020s by lowering it via atmospheric drag and a SpaceX-built US Deorbit Vehicle that will push the station toward Point Nemo in the South Pacific. A GAO report flags a potential gap in continuous human presence in low Earth orbit, while The Ocean Foundation warns the debris could threaten deep-sea ecosystems and urges environmental impact assessments and stronger international protections under UNCLOS, the London Protocol, and the BBNJ treaty.

via Space|
#iss#nasa#ocean-health
ISS deorbit plan prompts ocean health and legal concerns
science21 days ago

ISS deorbit plan prompts ocean health and legal concerns

NASA plans to deorbit the International Space Station by 2031 and steer debris toward Point Nemo in the remote Pacific to minimize risk to people, but Ocean Foundation researchers warn this raises serious concerns for ocean health and highlights gaps in international law, including environmental-protection obligations for debris in areas beyond national jurisdiction. A GAO report also notes a potential gap in continuous human presence in low Earth orbit, underscoring the need for a full environmental impact assessment and transparency about materials that would reach the seafloor under UNCLOS/BBNJ provisions.

via Yahoo|
#international-space-station#nasa#ocean-health
Ancient Salmon Cans Hint at Ocean Health
science2 months ago

Ancient Salmon Cans Hint at Ocean Health

A 42-year baseline study of 178 cans of salmon from the Gulf of Alaska and Bristol Bay found anisakid worms—parasites that require marine mammals to reproduce—are more common in chum and pink salmon from 1979–2021, while levels in coho and sockeye remained steady, suggesting a relatively healthy marine ecosystem and signaling that policies protecting marine life and water quality may be supporting ocean health.

via Yahoo|
#anisakids#bristol-bay#gulf-of-alaska
Decades-Old Salmon Cans Offer a Time Capsule of Ocean Health
science3 months ago

Decades-Old Salmon Cans Offer a Time Capsule of Ocean Health

Researchers analyzed 178 cans of salmon dating from 1979–2021, turning decades-old inventory into a 42-year ecological dataset by counting anisakid worms. The study found parasite numbers rose over time in chum and pink salmon (stable in coho and sockeye), suggesting reproduction and a functioning food web, while the data also illustrate how preserved cans can reveal long-term signals of ocean health in the Gulf of Alaska and Bristol Bay. Worms pose no risk to humans after processing.

via The Daily Galaxy|
#anisakid-worms#long-term-dataset#marine-parasites
Global Wave of Sea Urchin Die-Offs Triggers Ocean Health Alarm
science5 months ago

Global Wave of Sea Urchin Die-Offs Triggers Ocean Health Alarm

An international study documents an unprecedented die-off of black sea urchins (Diadema africanum) in the Canary Islands beginning in 2022, with widespread adult mortality preventing juvenile recruitment and risking local extinction; the die-off appears connected to other regional outbreaks (Caribbean, Gulf of Oman, Réunion) and could signal a broader marine epidemic threatening reef ecosystems, though the Canary Island cause is not yet confirmed; citizen-science data aided the assessment, underscoring the need for monitoring and protection of remaining urchin populations.

via Gizmodo|
#biodiversity#diadema-africanum#marine-biology
"Access NASA's PACE Data for Ocean and Climate Analysis"
science-and-technology2 years ago

"Access NASA's PACE Data for Ocean and Climate Analysis"

NASA has made science-quality data from its PACE satellite, which measures ocean health, air quality, and climate change effects, publicly available. The data will provide valuable insights into microscopic life in the ocean, air particles, and their impact on Earth. The satellite's extensive spectral range allows for the identification of specific phytoplankton communities, while its polarimeters measure polarized light reflecting off clouds and atmospheric particles, aiding in the understanding of climate and air quality. This data will contribute to a better understanding of our changing planet and its impact on coastal communities, fisheries, and climate.

via NASA|
#air-quality#climate-change#nasa
"Rapid Coral Recovery: Breakthrough Techniques and Captivating Spawning Events Bring Wild Hope"
environment2 years ago

"Rapid Coral Recovery: Breakthrough Techniques and Captivating Spawning Events Bring Wild Hope"

A study by the Mars Coral Reef Restoration Program in Indonesia has shown that artificially restored coral reefs can fully recover within just four years using a holistic approach called Reef Stars. The study revealed that the restored reefs were able to bounce back remarkably quickly, although they have not yet fully recovered their diversity. While such interventions are crucial for preventing further degradation of ocean health, aggressive climate change action is still needed to ensure the long-term survival of coral reefs.

via Bored Panda|
#climate-change#coral-reefs#environment
"NASA's PACE Mission: Observing Earth's Invisible Universe"
science-and-technology2 years ago

"NASA's PACE Mission: Observing Earth's Invisible Universe"

NASA successfully launched the Plankton, Aerosol, Climate, ocean Ecosystem (PACE) satellite to study ocean health, air quality, and the effects of climate change. PACE will use advanced instruments to track microscopic life in water and particles in the air, providing valuable data for understanding global warming and its impact on the environment. The mission aims to advance knowledge of the ocean's role in the climate cycle and address urgent questions about our changing climate, supporting the Biden-Harris Administration's climate agenda.

via NASA|
#climate-change#nasa#ocean-health
Unraveling the Complexity of Oceans: Modelling Marine Microbes for Climate Forecasts
environment2 years ago

Unraveling the Complexity of Oceans: Modelling Marine Microbes for Climate Forecasts

Understanding how marine microbes are affected by the climate crisis is crucial for forecasting the future state of the oceans and mitigating its effects on marine ecosystems and human communities. However, there is currently little confidence in predictions of how marine microbes will react to climate change. Researchers in marine microbiology, physiology, biogeochemistry, and modeling need to collaborate to better observe, understand, and model microbial processes. Current biogeochemical models have limitations in representing the complexity of marine ecosystems, and new approaches that combine biological information, statistical techniques, and mechanistic metabolic modeling are needed to improve accuracy and confidence in climate forecasts. Interdisciplinary science and international collaborations are essential to address the impacts of climate change on marine microbial ecosystems.

via Nature.com|
#biogeochemical-models#climate-forecasts#environment
Survivor's Unbreakable Spirit: Conquering Fear and Defying Odds After a Shark Attack
conservation2 years ago

Survivor's Unbreakable Spirit: Conquering Fear and Defying Odds After a Shark Attack

Mike Coots, a shark attack survivor, has dedicated his life to shark conservation and photography after losing his leg in a tiger shark attack. His new book, "Shark: Portraits," showcases his stunning images of sharks, aiming to change the perception of these apex predators. Coots emphasizes the importance of sharks for the health of our oceans and dispels misconceptions about their intentions towards humans. He shares safety tips for underwater encounters and highlights the need for clear visibility and eye contact with sharks. Through his work, Coots hopes to raise awareness about the beauty and significance of sharks in our seas.

via Daily Mail|
#conservation#misunderstood-predators#ocean-health
Great White Shark Numbers on the Rise, According to Researchers
environment3 years ago

Great White Shark Numbers on the Rise, According to Researchers

Researchers from Ocearch have observed a significant increase in the number of great white sharks off the East Coast of the US, with the ocean teeming with life like it hasn't since the 1940s or 50s. Ocearch has been studying and tagging great white sharks for the last decade, tracking their migration patterns online. The team has studied over 90 great white sharks, collecting samples for 24 different scientific studies, including one that would test the shark's hormone levels to discern whether she was mating. A healthy shark population is better for the entire planet, says chief scientist Dr. Bob Heuter.

via CBS News|
#environment#great-white-shark#ocean-health