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193 matches found for "freshwater fish"

Page anfang | 1 | 2 | 3 | 4 | 5 | anfang
BoarCroc, RatCroc, DogCroc, DuckCroc and PancakeCroc

A suite of five ancient crocs, including one with teeth like boar tusks and another with a snout like a duck's bill, have been discovered in the Sahara by National Geographic Explorer-in-Residenc...

Earth Sciences | nachricht Read more
Scientists ‘Unlock’ Mystery of Creating Cultured Pearls from the Queen Conch

With less than two years of research and experimentation, Drs. Héctor Acosta-Salmón and Megan Davis, co-inventors, have produced more than 200 cultured pearls using the techniques they developed. Prio...

Life Sciences | nachricht Read more
Robot fish could monitor water quality

Nature inspires technology for an engineer and an ecologist teamed up at Michigan State University. They're developing robots that use advanced materials to swim like fish to probe underwater env...

Ecology, The Environment and Conservation | nachricht Read more
FSU, Duke Partner to Study Impact of Gulf’s ‘Dead Zone’ on Shrimp Fishery

Florida State will serve as the lead institution for the collaborative project, which is funded by a four-year, $702,969 grant from the National Oceanic and Atmospheric Administration’s (NOAA) Norther...

Ecology, The Environment and Conservation | nachricht Read more
In Search of Wildlife-friendly Biofuels: Could Native Prairie Plants Be the Answer

In a paper published in the latest issue of the journal BioScience, David Flaspohler, Joseph Fargione and colleagues analyze the impacts on wildlife of the burgeoning conversion of grasslands to corn ...

Life Sciences | nachricht Read more
Widespread Occurrence of Intersex Bass Found in U.S. Rivers

Of the 16 fish species researchers examined from 1995 to 2004, the condition was most common by far in smallmouth and largemouth bass: a third of all male smallmouth bass and a fifth of all male large...

Life Sciences | nachricht Read more
River flow and temperature limit trout numbers

His method has been to monitor population numbers in relation to river flow in March, when the juvenile fish emerge. He concludes that environmental conditions change each year and modify river flow, ...

Life Sciences | nachricht Read more
PNNL Awarded $6.8 Million for Marine, River Power Studies

The bulk of the funding - $3.45 million, or $1.15 million per year - allows PNNL to lead a project that will examine the environmental impacts of marine and hydrokinetic power. Marine power includes p...

Power and Electrical Engineering | nachricht Read more
Time to tap climate-change-combating potential of the world's ecosystems

Investing in restoration and maintenance of the Earth's multi-trillion dollar ecosystems - from forests and mangroves to wetlands and river basins - can have a key role in countering climate chan...

Ecology, The Environment and Conservation | nachricht Read more
Shifting baselines confound river restoration

Steep reductions in the abundance of fish, shellfish, and other aquatic fauna in recent centuries are not restricted to animals that live in the sea: historical records show that species in rivers and...

Ecology, The Environment and Conservation | nachricht Read more
NASA researcher nets first measure of Africa's coastal forests

That's because swampy mangrove forests – essential breeding grounds for fish and shellfish in these countries – are being destroyed by worsening pollution, encroaching real estate development, an...

Agricultural and Forestry Science | nachricht Read more
Hundreds of New Species Discovered in Fragile Eastern Himalayas

Over 350 new species including the world’s second smallest deer, a “flying frog” and a 100 million-year old gecko have been discovered in the Eastern Himalayas, a biological treasure trove now threate...

Ecology, The Environment and Conservation | nachricht Read more
UBC researchers find first-ever 'wanderlust gene' in tiny bony fish

Measuring three to 10 centimetres, stickleback fish originated in the ocean but began populating freshwater lakes and streams following the last ice age. Over the past 15,000 years, freshwater stickle...

Life Sciences | nachricht Read more
Douglas-fir, geoducks make strange bedfellows in studying climate change

Analyzed by themselves, the rings from a single tree or mollusk may sometimes reflect conditions that are either favorable or unfavorable for growth. When scientists look at numerous individuals of th...

Earth Sciences | nachricht Read more
Freshwater fish at the top of the food chain evolve more slowly

For avid fishermen and anglers, the largemouth bass is a favorite freshwater fish with an appetite for minnows. A new study finds that once they evolved to eat other fish, largemouth bass and ...

Studies and Analyses | nachricht Read more
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