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Categories: Ecology: Sea Life, Space: Astronomy

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Biology: Biochemistry Biology: Marine Biology: Zoology Ecology: Sea Life
Published

Entanglements of humpback whales in fish farms rare -- and naivety could be to blame      (via sciencedaily.com)     Original source 

The first study of humpback whale entanglements in B.C. aquaculture facilities found eight over 13 years, with the curiosity of young whales a potential contributing factor.

Biology: General Biology: Zoology Ecology: General Ecology: Invasive Species Ecology: Nature Ecology: Research Ecology: Sea Life Environmental: Biodiversity Environmental: Ecosystems Environmental: General Geoscience: Earth Science Geoscience: Geography
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Forest, stream habitats keep energy exchanges in balance, global team finds      (via sciencedaily.com)     Original source 

Forests and streams are separate but linked ecosystems, existing side by side, with energy and nutrients crossing their porous borders and flowing back and forth between them. For example, leaves fall from trees, enter streams, decay and feed aquatic insects. Those insects emerge from the waters and are eaten by birds and bats. An international team has now found that these ecosystems appear to keep the energy exchanges in balance -- a finding that the scientists called surprising.

Biology: Biochemistry Biology: Cell Biology Biology: General Biology: Genetics Biology: Marine Biology: Zoology Ecology: Endangered Species Ecology: Nature Ecology: Research Ecology: Sea Life
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Scientists weigh up current status of blue whale populations around the world      (via sciencedaily.com)     Original source 

The largest living animal, the blue whale (Balaenoptera musculus) which averages about 27 meters in length, has slowly recovered from whaling only to face the rising challenges of global warming, pollution, disrupted food sources, shipping, and other human threats. In a major new study, biologists have taken a stock of the number, distribution and genetic characteristics of blue whale populations around the world and found the greatest differences among the eastern Pacific, Antarctic subspecies and pygmy subspecies of the eastern Indian and western Pacific.

Space: Astronomy Space: Astrophysics Space: Exploration Space: General
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High school students contribute to exoplanet discovery      (via sciencedaily.com)     Original source 

A group of high school students from Oakland, California, made contributions to the field of exoplanet research. Researchers worked with the students to use backpack-sized digital smart telescopes. These young citizen scientists played a role in observing and confirming the nature of a warm and dense sub-Saturn planet, known as TIC 139270665 b, orbiting a metal-rich G2 star.

Biology: Marine Biology: Zoology Ecology: Animals Ecology: Sea Life
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Killer whales use specialized hunting techniques to catch marine mammals in the open ocean      (via sciencedaily.com)     Original source 

Killer whales foraging in deep submarine canyons off the coast of California represent a distinct subpopulation that uses specialized hunting techniques to catch marine mammals, researchers report.

Biology: Marine Ecology: Endangered Species Ecology: Extinction Ecology: Nature Ecology: Sea Life Paleontology: Fossils Paleontology: General
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Ancient giant dolphin discovered in the Amazon      (via sciencedaily.com)     Original source 

Measuring between 3 to 3.5 meters, 16 million years old: Paleontologists have announced the discovery of a new species of freshwater dolphin in the Peruvian Amazon region. Surprisingly, its closest living relatives can be found in the river dolphins of South Asia.

Offbeat: General Offbeat: Space Space: Astronomy Space: Astrophysics Space: Cosmology Space: Exploration Space: General Space: Structures and Features
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Scientists find one of the most ancient stars that formed in another galaxy      (via sciencedaily.com)     Original source 

The first generation of stars transformed the universe. Inside their cores, simple hydrogen and helium fused into a rainbow of elements. When these stars died, they exploded and sent these new elements across the universe. The iron running in your veins and the calcium in your teeth and the sodium powering your thoughts were all born in the heart of a long-dead star.

Offbeat: General Offbeat: Space Space: Astronomy Space: Astrophysics Space: Exploration Space: General Space: Structures and Features
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Astrophysicist's research could provide a hint in the search for dark matter      (via sciencedaily.com)     Original source 

Dark matter is one of science's greatest mysteries. Although it is believed to make up about 85 percent of the cosmos, scientists know very little about its fundamental nature. Research provides some of the most stringent constraints on the nature of dark matter yet. It also revealed a small hint of a signal that, if real, could be confirmed in the next decade or so.

Biology: Marine Biology: Zoology Ecology: Animals Ecology: Sea Life Geoscience: Environmental Issues Geoscience: Geography
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Fish fed to farmed salmon should be part of our diet, too, study suggests      (via sciencedaily.com)     Original source 

Scientists found that farmed salmon production leads to an overall loss of essential dietary nutrients. They say that eating more wild 'feed' species directly could benefit our health while reducing aquaculture demand for finite marine resources.

Space: Astronomy Space: Exploration Space: General
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Simulated microgravity effects cause marked changes in gene expression rhythms in humans, study finds      (via sciencedaily.com)     Original source 

Simulated effects of microgravity, created by 60 days of constant bed rest, severely disrupts rhythmic gene expression in humans, according to a new study.

Biology: Marine Ecology: Sea Life Environmental: Ecosystems Environmental: General Environmental: Water Geoscience: Environmental Issues Geoscience: Geography Geoscience: Oceanography
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There are large accumulations of plastics in the ocean, even outside so-called garbage patch      (via sciencedaily.com)     Original source 

When plastic ends up in the ocean, it gradually weathers and disintegrates into small particles. If marine animals ingest these particles, their health can be severely affected. Large accumulations of plastic can therefore disrupt the biological balance of marine ecosystems. But which areas are particularly affected?

Biology: Biochemistry Biology: Zoology Ecology: Animals Ecology: General Ecology: Nature Ecology: Research Ecology: Sea Life Environmental: Biodiversity Environmental: Ecosystems Environmental: Water
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Artificial streams reveal how drought shapes California's alpine ecosystems      (via sciencedaily.com)     Original source 

Researchers have used a series of artificial stream channels to mimic the behavior of headwater creeks under future climate change scenarios. They found that drier conditions shifted the life cycles of the algae and insects that form the base of the alpine food web. However, because species adjusted to the shifts in a variety of ways, the stream ecosystems were generally resilient to the changing conditions.

Biology: Marine Ecology: Nature Ecology: Sea Life Environmental: Ecosystems Environmental: General Environmental: Water Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geochemistry Paleontology: Climate
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A wetter world recorded in Australian coral colony      (via sciencedaily.com)     Original source 

When climate scientists look to the future to determine what the effects of climate change may be, they use computer models to simulate potential outcomes such as how precipitation will change in a warming world. Some scientists are also looking at something a little more tangible: coral.

Biology: Marine Biology: Zoology Ecology: Animals Ecology: Nature Ecology: Sea Life Environmental: General Geoscience: Environmental Issues Geoscience: Geography
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Fish species that move rapidly toward the poles due to global warming decline in abundance, study finds      (via sciencedaily.com)     Original source 

A new study has found a decline in the abundance of marine fish species that move rapidly toward the poles to escape rising sea temperatures. The researchers explain that many animal species are currently moving toward cooler regions as a result of global warming, but the velocity of such range shifts varies greatly for different species. Examining thousands of populations from almost 150 fish species, the researchers show that contrary to the prevailing view, rapid range shifts coincide with widescale population declines.

Space: Astronomy Space: Astrophysics Space: Cosmology Space: Exploration Space: General Space: Structures and Features
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Largest-ever map of universe's active supermassive black holes released      (via sciencedaily.com)     Original source 

Astronomers have charted the largest-ever volume of the universe with a new map of active supermassive black holes living at the centers of galaxies. Called quasars, the gas-gobbling black holes are, ironically, some of the universe's brightest objects. The new map logs the location of about 1.3 million quasars in space and time, the furthest of which shone bright when the universe was only 1.5 billion years old. The work could help scientists better understand the properties of dark matter.

Biology: Biochemistry Biology: Marine Biology: Microbiology Ecology: Sea Life Environmental: Ecosystems Environmental: General Environmental: Water Geoscience: Earth Science Geoscience: Geochemistry Geoscience: Geography Geoscience: Geology Geoscience: Oceanography
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Even inactive smokers are densely colonized by microbial communities      (via sciencedaily.com)     Original source 

Everything is everywhere -- under certain conditions microbial communities can grow and thrive, even in places that are seemingly uninhabitable. This is the case at inactive hydrothermal vents on the sea floor. An international team is presently working to accurately quantify how much inorganic carbon can be bound in these environments.

Offbeat: General Offbeat: Space Space: Astronomy Space: Astrophysics Space: Cosmology Space: General Space: Structures and Features
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New research suggests that our universe has no dark matter      (via sciencedaily.com)     Original source 

A new study challenges the current model of the universe by showing that, in fact, it has no room for dark matter.

Biology: Biochemistry Biology: Marine Biology: Zoology Ecology: Animals Ecology: Endangered Species Ecology: Invasive Species Ecology: Sea Life Geoscience: Geography Geoscience: Oceanography
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Shark-bitten orcas in the Northeastern Pacific could be a new population of killer whale      (via sciencedaily.com)     Original source 

Researchers believe a group of killer whales observed hunting marine mammals including sperm whales, as well as a sea turtle, in the open ocean off California and Oregon could be a new population. Based on available evidence, the researchers posit that the 49 orcas could belong to a subpopulation of transient killer whales or a unique oceanic population found in waters off the coast of California and Oregon.

Biology: Marine Biology: Zoology Ecology: Endangered Species Ecology: Sea Life Geoscience: Earth Science Geoscience: Geochemistry Geoscience: Geography Geoscience: Oceanography
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Groundbreaking study reveals extensive leatherback turtle activity along U.S. coastline      (via sciencedaily.com)     Original source 

A new study provides groundbreaking findings that offer insights on the migration and foraging patterns of leatherback sea turtles along the Northwest Atlantic shelf.