Showing 20 articles starting at article 621

< Previous 20 articles        Next 20 articles >

Categories: Biology: Marine, Geoscience: Earthquakes

Return to the site home page

Biology: Marine Ecology: Sea Life Geoscience: Environmental Issues
Published

Diets rich in food from the ocean and freshwater sources can help address nutritional and environmental challenges      (via sciencedaily.com) 

Blue foods -- those that come from the ocean or freshwater environments -- have tremendous potential to help address several global challenges. With careful implementation of policies that leverage these foods, nations could get a boost on efforts to reduce nutritional deficits, lower disease risk, decrease greenhouse gas emissions and ensure resilience in the face of climate change.

Geoscience: Earthquakes Geoscience: Geology
Published

Deep earthquakes could reveal secrets of the Earth's mantle      (via sciencedaily.com) 

A new study suggests there may be a layer of surprisingly fluid rock ringing the Earth, at the very bottom of the upper mantle.

Biology: Marine Ecology: Animals Ecology: Endangered Species Ecology: Extinction Ecology: General Ecology: Invasive Species Ecology: Research Ecology: Sea Life Environmental: Biodiversity Environmental: Ecosystems
Published

New research reveals 12 ways aquaculture can benefit the environment      (via sciencedaily.com) 

Aquaculture, or the farming of aquatic plants and animals, contributes to biodiversity and habitat loss in freshwater and marine ecosystems globally, but when used wisely, it can also be part of the solution, new research shows.

Geoscience: Earthquakes Geoscience: Geology Paleontology: Climate
Published

Bouncing seismic waves reveal distinct layer in Earth's inner core      (via sciencedaily.com) 

Data captured from seismic waves caused by earthquakes has shed new light on the deepest parts of Earth's inner core, according to seismologists.

Biology: Marine Ecology: Animals Ecology: Endangered Species Ecology: Invasive Species Ecology: Sea Life Environmental: Ecosystems Geoscience: Oceanography
Published

Food quality matters for southern resident killer whales      (via sciencedaily.com) 

Not all Chinook salmon are created equal, and this has a major impact on the energetics for southern resident killer whales. A recent study quantified the lipid content in Fraser River Chinook salmon -- the southern resident's preferred meal -- and found that spring-run Chinook salmon, the earliest to arrive to the Salish Sea are lipid-rich and energy dense; a critical factor for the killer whales who prey on them. Fraser River Chinook salmon that come later in the season have lower energy density.

Biology: Marine Ecology: Animals Ecology: Extinction Ecology: Sea Life
Published

Feathered 'fingerprints' reveal potential motivation for migratory patterns of endangered seabirds      (via sciencedaily.com) 

New research shows that the feathers of seabirds such as the Wandering Albatross can provide clues about their long-distance foraging, which could help protect these species from further decline.

Geoscience: Earthquakes Geoscience: Geology
Published

Earthquake scientists have a new tool in the race to find the next big one      (via sciencedaily.com) 

New research on friction between faults could aid in predicting the world's most powerful earthquakes. Researchers discovered that fault surfaces bond together, or heal, after an earthquake. A fault that is slow to heal is more likely to move harmlessly, while one that heals quickly is more likely to stick until it breaks in a large, damaging earthquake. Tests allowed them to calculate a slow, harmless type of tremor. The discovery alone won't allow scientists to predict when the next big one will strike but it does give researchers a valuable new way to investigate the causes and potential for a large, damaging earthquake to happen, and guide efforts to monitor large faults like Cascadia in the Pacific Northwest.

Biology: Marine Ecology: Sea Life Offbeat: Plants and Animals
Published

How the fastest fish hunts its prey      (via sciencedaily.com) 

Scientists have designed a novel electronic tag package incorporating high-tech sensors and a video camera in order to document a detailed view of exactly how sailfish behave and hunt once they are on their own and out of view of the surface.

Biology: Marine Ecology: Sea Life Geoscience: Oceanography
Published

Whale warning as clock ticks towards deep-sea mining      (via sciencedaily.com) 

Seabed mining could soon begin in the deep ocean -- but the potential impact on animals including whales is unknown, researchers have warned.

Biology: Marine Ecology: Extinction Ecology: General Ecology: Research Ecology: Sea Life Environmental: Ecosystems Geoscience: Oceanography
Published

Coral reefs in the Eastern Pacific could survive into the 2060s      (via sciencedaily.com) 

Scientists found that some reefs in the tropical Pacific Ocean could maintain high coral cover into the second half of this century by shuffling the symbiotic algae they host. The findings offer a ray of hope in an often-dire picture of the future of coral reefs worldwide.

Biology: Evolutionary Biology: Marine Ecology: Sea Life Environmental: Biodiversity
Published

Biodiversity engine for fishes: Shifting water depth      (via sciencedaily.com) 

Fish, the most biodiverse vertebrates in the animal kingdom, present evolutionary biologists a conundrum: The greatest species richness is found in the world's tropical waters, yet the fish groups that generate new species most rapidly inhabit colder climates at higher latitudes. A new study helps to explain this paradox. The researchers discovered that the ability of fish in temperate and polar ecosystems to transition back and forth from shallow to deep water triggers species diversification. Their findings suggest that as climate change warms the oceans at higher latitudes, it will impede the evolution of fish species.

Biology: Marine Ecology: Sea Life Geoscience: Oceanography
Published

Due to their feed, chicken and farmed salmon have remarkably similar environmental footprints      (via sciencedaily.com) 

We love our chicken. We love our salmon. Thanks to how we farm these two popular proteins, their environmental footprints are surprisingly similar.

Biology: Marine Ecology: Extinction Ecology: Research Ecology: Sea Life Paleontology: Fossils Paleontology: General
Published

Fossil discovery reveals complex ecosystems existed on Earth much earlier than previously thought      (via sciencedaily.com)     Original source 

About 250 million years ago, the Permian-Triassic mass extinction killed over 80 per cent of the planet's species. In the aftermath, scientists believe that life on earth was dominated by simple species for up to 10 million years before more complex ecosystems could evolve. Now this longstanding theory is being challenged by a team of international researchers.

Biology: Marine Ecology: Sea Life Geoscience: Oceanography
Published

The cod population off the coast of Sweden is not extinct      (via sciencedaily.com)     Original source 

Through DNA analyses, researchers have identified that there are still juvenile coastal cod off the west coast of Sweden. However, it is still difficult to find any mature adult cod in the area.

Geoscience: Earthquakes Geoscience: Geology Geoscience: Volcanoes
Published

Exact magma locations may improve volcanic eruption forecasts      (via sciencedaily.com) 

Cornell University researchers have unearthed precise, microscopic clues to where magma is stored, offering a way to better assess the risk of volcanic eruptions.

Biology: Marine Ecology: General Ecology: Research Ecology: Sea Life Environmental: Biodiversity Geoscience: Oceanography
Published

Marine reserves unlikely to restore marine ecosystems      (via sciencedaily.com) 

Protected marine areas are one of the essential tools for the conservation of natural resources affected by human impact -- mainly fishing --, but, are they enough to recover the functioning of these systems? A study now highlights the limitations of marine reserves in restoring food webs to their pristine state prior to the impact of intensive fishing.

Archaeology: General Biology: Marine Offbeat: Paleontology and Archeology Offbeat: Plants and Animals
Published

Caribou have been using same Arctic calving grounds for 3,000 years      (via sciencedaily.com) 

Caribou have been using the same Arctic calving grounds for more than 3,000 years. Female caribou shed their antlers within days of giving birth, leaving behind a record of their annual travels across Alaska and Canada's Yukon that persists on the cold tundra for hundreds or even thousands of years. Researchers recovered antlers that have sat undisturbed on the arctic tundra since the Bronze Age.

Geoscience: Earthquakes Geoscience: Geology
Published

Scientists detect molten rock layer hidden under Earth's tectonic plates      (via sciencedaily.com) 

Scientists have discovered a new layer of partly molten rock under the Earth's crust that might help settle a long-standing debate about how tectonic plates move. The molten layer is located about 100 miles from the surface and is part of the asthenosphere, which is important for plate tectonics because it forms a relatively soft boundary that lets tectonic plates move through the mantle. The researchers found, however that the melt does not appear to notably influence the flow of mantle rocks. Instead, they say, the discovery confirms that the convection of heat and rock in the mantle are the prevailing influence on the motion of the plates.

Biology: Marine Biology: Microbiology
Published

Why microbes in the deep ocean live without sunlight      (via sciencedaily.com)     Original source 

A new study reverses the idea that the bulk of life in the ocean is fueled by photosynthesis via sunshine, revealing that many ocean microbes in fact get their energy from hydrogen and carbon monoxide. It has always been a mystery as to how microbes growing in deepest parts of the sea survive, with no sunlight. A new study shows that a distinct process called chemosynthesis -- growth using inorganic compounds -- fuels microbes in these darkest depths.

Biology: Marine
Published

Shark bites tied for 10-year low in 2022 but spiked in regional hotspots      (via sciencedaily.com)     Original source 

The number of unprovoked shark attacks worldwide decreased last year, tying with 2020 for the fewest number of reported incidents in the last 10 years. There were a total of 57 unprovoked bites in 2022, most of which occurred in the United States and Australia. Of these, five attacks were fatal, down from nine deaths in 2021 and 10 the year prior.