Tag: "freshwater" at biology news
Study in Royal Society journal on world's only horned rodent
...terling, a fish that lays its eggs on the gills of freshwater
mussels, we showed that when females spawn with a single male fewer of their eggs were fertilised than those mating with groups of males. We also showed that females perform conspicuous behaviours before spawning that appear to signal to males that t...
Industrial contaminants spread by seabirds in High Arctic, new Canadian study shows
...n the high cliffs, which are ringed by a series of freshwater
ponds at their base. Although environmental monitoring in High Arctic locations is often very difficult due to logistical difficulties, lake sediments archive important information on environmental changes. "Lakes slowly accumulate sediments, and inc...
Ferry-linked water monitoring system becomes new model for United States
... maps of the amounts of nutrients and sediments in freshwater
runoff entering the sound, and the algae responses, including potentially harmful 'blooms,' to these sources across most of Pamlico Sound." By DAVID WILLIAMSON UNC News Services...
Divergent life history shapes gene expression in brains of salmon
...rential expression in males who migrate from their freshwater
birthplaces to mature in oceans versus those who do not leave the freshwater
environment to mature. The researchers, at Harvard University, the University of Massachusetts and ...
Humans trading short-term food production for long-term environmental losses
...ow negatively affect water quality and coastal and freshwater
ecosystems. Biodiversity is lost due to modification, fragmentation and loss of habitats, soil, and water, and exploitation of native species. Land-use practices play a role in changing the global carbon cycle, and possibly, the global climate. The k...
Beach pollution is worst during new and full moon
...nimal remains that wash ashore] have been shown at freshwater
beaches to harbor fecal indicator bacteria and even pathogenic bacteria," Boehm says. "Beach managers who want to improve water quality at their beaches should investigate the potential of these sources to be contributors of enterococci to marine wat...
Roadways and parking lots threaten freshwater quality in the northeastern US
...ith a serious unforeseen cost-- the degradation of freshwater
ecosystems. In a recent Proceedings of the Nation... of New Hampshire-- the researchers concluded that freshwater
salinity has been increasing at an alarming rate over the past 30 years. In the Baltimore study area...
Can ancient rocks yield clues about catastrophes like Hurricane Katrina?
... model. The model data were used to quantify the freshwater
run-off from tropical Africa into the equatorial A...ly during this specific orbital configuration that freshwater
run-off exceeded a certain threshold, finally to result in a rapid change to ocean anoxia. The findi...
Emerald Spectre haunts Ontario's ash forests
... says Dr. MacIsaac, whose research is primarily on freshwater
and marine invasive species. Scientists believe the borer probably entered North America in ash shipping materials, and was present for as much as a decade prior to being identified. The challenge in the Great Lakes region, he says, is the current ex...
Satellites spot mighty Mississippi - in the Atlantic
...have been able to estimate the amount or volume of freshwater
discharged and carried over such remote distances. By combining the very detailed data from MODIS with observations from ships, we got a three-dimensional view of the Mississippi plume," said Chuanmin Hu, of the College of Marine Science, University ...
Marine bacterium suspected to play role in global carbon and nitrogen cycles
... in more common environs including the open ocean, freshwater
and soil. Subsequent efforts to grow various samples of these organisms led to this cultivation of N. maritimus, or "dwarf belonging to the sea," by Stahl and scientists at the Woods Hole Oceanographic Institution. They report their work in the Se...
A new angle on flowers: Fish are players in pollination
...'s because they eat dragonfly larva, which live in freshwater
ponds and other water bodies. Adult dragonflies are major predators of bees, butterflies and other insect pollinators. The result is a simple but unexpected cascade: The more fish, the fewer dragonflies, the more bees and butterflies, the more plant ...
Sudden change in social status triggers genetic response in male fish, study finds
...lid species that inhabit Lake Tanganyika and other freshwater
lakes in East Africa. Like all cichlids, A. burtoni lives in a hierarchical social system where showy dominant males defend small territories that are used for courtship and breeding. However, dominance among male cichlids is reversible: If a subordi...
Advancing saltwater fish farming
...will be available of hybrid striped bass raised in freshwater
then transferred to saltwater prior to harvest to ...lopment of methods to raise saltwater fish in near freshwater
to decrease operational costs and allow more use of inland agricultural areas, research on alternati...
Valuing biodiversity services, including its insurance against disease
... disasters; How the extinction and endangerment of freshwater
species, which provide a wide variety of goods and services for humanity, greatly exceeds that of terrestrial, marine, or vertebrate species; and How biodiversity-based solutions are being drawn from ecological and traditional knowledge to reduce the...
Forsyth scientists identify a gene responsible for facial diversity
... that influence the jaws of cichlid fish, tropical freshwater
fish renowned for head shape diversity, offer insight into overall vertebrate diversity. The scientific studies led by R. Craig Albertson, PhD., Staff Associate, show that the growth factor gene, bmp4, is both associated with and has the potential to...
Fisheries science student describes new species of mussel
...s able to describe a new species and subspecies of freshwater
mussel. His findings also illustrate how essential a multi-faceted approach is to understanding and describing the world's biodiversity. The thesis abstract is at http://scholar.lib.vt.edu/theses/available/etd-03302004-153127/ with a link to a PDF...
Biorenewables products for a sustainable future: York leads new consortium
...sts in micro-organisms, land plants and marine and freshwater
organisms, and their industrial applications. Funded by the Department of Trade and Industry, the network will share ideas and experience, develop a comprehensive research and technology strategy to inform Government policy-making and funding priorit...
Dragon over water: Envisat monitors China's largest lake, rivers flooding
... charted the hydrological cycle of China's largest freshwater
body, Poyang Lake, whose area fluctuates more than...-prone Dongting Lake the country's second largest freshwater
body in Hunan Province as well as elsewhere across the world. Dragon demonstrating operational fl...
Regenerating worms help elucidate stem cell biology
... process of regeneration more dramatic than in the freshwater
flatworm planaria. Cut one of these animals in half, and a week later, two fully functional worms will have developed from the pieces. Cut a piece that is 1/279th the size of the animal, and it too will regrow into a complete worm. The process, scie...
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