Showing 20 articles starting at article 541

< Previous 20 articles        Next 20 articles >

Categories: Ecology: Sea Life, Geoscience: Earth Science

Return to the site home page

Geoscience: Earth Science Geoscience: Earthquakes Geoscience: Geochemistry Geoscience: Geography Geoscience: Geology Geoscience: Oceanography
Published

Early-stage subduction invasion      (via sciencedaily.com)     Original source 

Our planet's lithosphere is broken into several tectonic plates. Their configuration is ever-shifting, as supercontinents are assembled and broken up, and oceans form, grow, and then start to close in what is known as the Wilson cycle.

Environmental: Ecosystems Environmental: General Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geochemistry Geoscience: Geography Geoscience: Geology Geoscience: Oceanography
Published

New 'time travel' study reveals future impact of climate change on coastal marshes      (via sciencedaily.com)     Original source 

A new study offers a glimpse into the possible impact of climate change on coastal wetlands 50 years or longer into the future. Scientists are usually forced to rely on computer models to project the long-term effects of rising seas, but an unexpected set of circumstances enabled a real-world experiment along the Gulf Coast.

Biology: Biochemistry Biology: General Biology: Marine Biology: Zoology Ecology: Animals Ecology: Sea Life Environmental: Ecosystems Environmental: Water Geoscience: Geography
Published

The role of jellies as a food source in the Arctic winter      (via sciencedaily.com)     Original source 

The Arctic is changing rapidly due to climate change. It is not only affected by increasing surface temperatures, but also by warm water from the Atlantic, which is flowing in more and more -- changing the structures and functions of the ecosystem as it also leads to species from warmer regions, such as sea jellies (also known as jellyfish) arriving in the Arctic. Using DNA metabarcoding, researchers have now been able to demonstrate that these jellyfish serve as food for amphipods on Svalbard during the polar night and thus play a greater role in Arctic food webs than previously assumed.

Biology: Marine Biology: Zoology Ecology: Extinction Ecology: General Ecology: Research Ecology: Sea Life Environmental: Ecosystems Environmental: General Environmental: Water Geoscience: Environmental Issues Geoscience: Geography
Published

Cold-water coral traps itself on mountains in the deep sea      (via sciencedaily.com)     Original source 

Corals searching for food in the cold and dark waters of the deep sea are building higher and higher mountains to get closer to the source of their food. But in doing so, they may find themselves trapped when the climate changes.

Biology: Biochemistry Biology: Botany Biology: Cell Biology Biology: General Biology: Genetics Biology: Molecular Ecology: Endangered Species Environmental: Water Geoscience: Earth Science Geoscience: Environmental Issues
Published

Controlling root growth direction could help save crops and mitigate climate change      (via sciencedaily.com)     Original source 

Scientists have determined how the well-known plant hormone ethylene is crucial in controlling the angle at which roots grow. The findings can be used to engineer plants and crops that withstand the environmental stresses of climate change and drought, and perhaps to create plants that remove carbon dioxide from the atmosphere and store it deep underground to help mitigate climate change.

Biology: Biochemistry Biology: Zoology Environmental: Ecosystems Geoscience: Earth Science Offbeat: Earth and Climate Offbeat: General Offbeat: Plants and Animals
Published

Desert ants: The magnetic field calibrates the navigation system      (via sciencedaily.com)     Original source 

Desert ants find their way during an early learning phase with the help of the Earth's magnetic field. The associated learning process leaves clear traces in their nervous system.

Environmental: Biodiversity Environmental: Ecosystems Environmental: General Environmental: Water Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geography Geoscience: Oceanography
Published

Frequent marine heatwaves in the Arctic Ocean will be the norm      (via sciencedaily.com)     Original source 

Marine heatwaves will become a regular occurrence in the Arctic in the near future and are a product of higher anthropogenic greenhouse-gas emissions -- as shown in a new study.

Environmental: Ecosystems Environmental: General Environmental: Water Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geography
Published

Greenland's ice sheet is melting -- and being replaced by vegetation      (via sciencedaily.com)     Original source 

An estimated 11,000 sq miles or 28,707 sq kilometers of Greenland's ice sheet and glaciers have melted over the last three decades, according to a major analysis of historic satellite records.

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

If we can't untangle this mess, Norway's blue industry will never be green      (via sciencedaily.com)     Original source 

For the first time, researchers have investigated how ropes and fishing lines are handled by the Norwegian commercial fishing industry. The fishing fleet loses almost 400 tons of rope in Norwegian waters every year.

Biology: Marine Biology: Zoology Ecology: Sea Life Environmental: Ecosystems Environmental: General Environmental: Water Geoscience: Environmental Issues
Published

Polar bears unlikely to adapt to longer summers      (via sciencedaily.com)     Original source 

More time stranded on land means greater risk of starvation for polar bears, a new study indicates. During three summer weeks, 20 polar bears closely observed by scientists tried different strategies to maintain energy reserves, including resting, scavenging and foraging. Yet nearly all of them lost weight rapidly: on average around 1 kilogram, or 2.2 pounds, per day. Some have speculated that polar bears might adapt to the longer ice-free seasons due to climate warming by acting like their grizzly bear relatives and either rest or eat terrestrial food. The polar bears in this study tried versions of both strategies -- with little success.

Biology: Marine Ecology: Sea Life Environmental: Ecosystems Geoscience: Earth Science Geoscience: Geography
Published

Satellites unveil the size and nature of the world's coral reefs      (via sciencedaily.com)     Original source 

New research has shown there is more coral reef area across the globe than previously thought, with detailed satellite mapping helping to conserve these vital ecosystems.

Biology: Marine Biology: Microbiology Ecology: Extinction Ecology: Sea Life Environmental: Ecosystems Environmental: Water Geoscience: Earth Science Geoscience: Geochemistry
Published

Compounds released by bleaching reefs promote bacteria, potentially stressing coral further      (via sciencedaily.com)     Original source 

New research revealed that when coral bleaching occurs, corals release unique organic compounds into the surrounding water that not only promote bacterial growth overall, but select for opportunistic bacteria that may further stress reefs.

Geoscience: Earth Science Geoscience: Geochemistry Geoscience: Geography Geoscience: Geology Geoscience: Oceanography Paleontology: Climate Paleontology: General
Published

Researchers studying ocean transform faults, describe a previously unknown part of the geological carbon cycle      (via sciencedaily.com)     Original source 

This study reports widespread mineral carbonation of mantle rocks in an oceanic transform fueled by magmatic degassing of CO2. The findings describe a previously unknown part of the geological carbon cycle in transform faults that represent one of the three principal plate boundaries on Earth. The confluence of tectonically exhumed mantle rocks and CO2-rich alkaline basalt formed through limited extents of melting characteristic of the St. Paul's transform faults may be a pervasive feature at oceanic transform faults in general. Because transform faults have not been accounted for in previous estimates of global geological CO2 fluxes, the mass transfer of magmatic CO2 to the altered oceanic mantle and seawater may be larger than previously thought.

Ecology: General Ecology: Nature Ecology: Research Environmental: Ecosystems Environmental: General Environmental: Water Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geochemistry Geoscience: Geography
Published

Global deforestation leads to more mercury pollution      (via sciencedaily.com)     Original source 

Researchers find deforestation accounts for about 10 percent of global human-made mercury emissions. While it cannot be the only solution, they suggest reforestation could increase global mercury uptake by about 5 percent.

Chemistry: General Chemistry: Inorganic Chemistry Chemistry: Organic Chemistry Environmental: General Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geochemistry
Published

Key advance for capturing carbon from the air      (via sciencedaily.com)     Original source 

A chemical element so visually striking that it was named for a goddess shows a 'Goldilocks' level of reactivity -- neither too much nor too little -- that makes it a strong candidate as a carbon scrubbing tool.

Environmental: Ecosystems Environmental: General Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geography Geoscience: Oceanography
Published

When the global climate has the hiccups      (via sciencedaily.com)     Original source 

Climate changes usually happens over long periods of time, but during the last glacial period, extreme fluctuations in temperature occurred within just a few years. Researchers have now been able to prove the phenomenon also occurred during the penultimate glacial period.

Biology: Biochemistry Biology: General Biology: Marine Biology: Zoology Ecology: Animals Ecology: Endangered Species Ecology: Sea Life Offbeat: General Offbeat: Plants and Animals
Published

Surprising behavior in one of the least studied mammals in the world      (via sciencedaily.com)     Original source 

Beaked whales are among the least studied mammals in the world. Now, a new study reveals surprising information about the Baird's beaked whale species.

Environmental: Ecosystems Environmental: General Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geochemistry Geoscience: Geography
Published

Industrial pollution leaves its mark in Mediterranean corals      (via sciencedaily.com)     Original source 

For the first time, pollutants from burning fossil fuels have been found embedded in corals, offering scientists a potential new tool to track the history of pollution, finds a new study.

Environmental: General Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geography Geoscience: Geology Geoscience: Oceanography Paleontology: Climate
Published

Ice cores provide first documentation of rapid Antarctic ice loss in the past      (via sciencedaily.com)     Original source 

Researchers have uncovered the first direct evidence that the West Antarctic Ice Sheet shrunk suddenly and dramatically at the end of the Last Ice Age, around eight thousand years ago. The evidence, contained within an ice core, shows that in one location the ice sheet thinned by 450 meters -- that's more than the height of the Empire State Building -- in just under 200 years.