Tag: "fisheries" at biology news
U of A scientist finds Atlantic salmon escapes higher than government reports
...ity of Alberta scientist. Dr. John Volpe, a U of A fisheries
ecologist in the Faculty of Science, has just publ...and Oceans, says Volpe. "The message coming out of fisheries
and oceans is false," said Volpe. "Their numbers fly in the face of the data we found and these esca...
Shark fin trade greater than previously thought, study finds
...used by organizations such as the FAO and regional fisheries
management organizations for more accurate assessments of global fishing trends....
Leatherback sea turtles careening towards extinction
... approaches to reduce imports of target species in fisheries
that take sea turtles. Critical to the success o...rowder. To help remedy this problem, U.S. longline fisheries
already have been restricted or closed, but this will not adequately protect leatherbacks. More tha...
Meeting the nitrogen management challenge: Arresting the nitrogen cascade
...rface aquatic systems, which leads to a decline in fisheries
production and recreational value in the area. But there are also additional remediation costs associated to returning the water systems to their unpolluted state. Estimates of the economic damage or benefits can be interred from productivity changes...
Scientists urge managers to limit use of destructive fishing gears
...sts, and academics, despite frequent conflict over fisheries
issues, agree that bottom trawling a common metho...though scientific data demonstrate the collapse of fisheries
around the world, destructive fishing practices carry on out of sight and, hence, out of mind. Nea...
New studies reveal connections between oceanographic processes and rockfish populations
...zzi collaborated with Ammann, currently a research fisheries
biologist at the National Marine Fisheries Service...One of the key questions for marine ecologists and fisheries
biologists is to understand what determines year-to-year variation, as well as geographic variation,...
Scientists crack the black box of coastal ecosystems
...es go. "One of the greatest challenges in managing fisheries
is to know what the larvae are doing and where they are going," says Warner. A major scientific breakthrough is the new ability to track the previously invisible movements of larvae. The ear bones or otoliths of many marine fish show distinct chemica...
Marine biologists probe 'black box' mysteries of the sea
...one big mix up and down the coast - and that's how fisheries
are managed at the state and local level. The fact these neighborhoods exist means that it's possible for there to be local benefits, and that's one of the things that will make a big difference in getting local communities to begin protecting chunks...
Researchers find invasive species are healthy species They leave their parasites behind
...ris. It has had a devastating effect on East Coast fisheries
and is now threatening fisheries
in the Northwest as it moves from California toward Puget Sound in Washington. The green crab eats D...
Sex, flounder and donuts
... flounder stocks by both national and state marine fisheries
groups have resulted in more regulations - and les...t for commercial fishing fleets. In Japan, natural fisheries
get a boost from the annual release of hatchery-reared juveniles. The use of farm-reared fish for st...
The dollars and sense of protecting the ocean
...y two-thirds since the early 1950s, and that world fisheries
catches have been declining by about 700 thousand tonnes per year since the late 1980s. Recent scientific evidence show that 'fencing off' parts of the sea, in marine protected areas (MPAs), where fishing and other human uses are closely regulated is...
Report to aid nation in managing freshwaters
...1, 2003 -- Paul Angermeier, associate professor of fisheries
and wildlife sciences in Virginia Tech's College of Natural Resources, helped develop the 2002 Ecological Society of America (ESA) report on meeting the future needs for freshwater sustainability. Freshwater is vital to human life and the well-being ...
Marine reserves can't do it all: Sea otters vs. red abalone
California's sea otters and red abalone fisheries
both need help -- but what's the best way to prote...tected areas off California cannot enhance abalone fisheries
if...they also contain sea otters, " say Samantha Fanshawe, who did this work while at the Universit...
Ocean report calls for the immediate creation of marine reserves throughout the United States
...lso cited studies showing that most of the world's fisheries
are at or above sustainable level, as commercial fishers harvest some 80 million metric tons of seafood annually. A fully protected marine reserve offers one of the best tools to reverse those trends, Palumbi noted. "There is strong scientific eviden...
Peoples' household dynamics crucial to biodiversity
... environment," said Liu, an associate professor of fisheries
and wildlife. "Freedom and privacy come at a huge environmental cost." Liu and his co-authors ecologist Gretchen Daily, population expert Paul Ehrlich and postdoctoral associate Gary Luck examined household dynamics and population changes worldwide, ...
From sardines to anchovies and back in 50 years
... gathered data from fellow scientists, not just on fisheries
biology, but on sea-surface temperature, elevation... "At least for these fast-growing fish, commercial fisheries
are not always the sole cause of the collapse." Similarly, he points out that studies of global warm...
Study employs backyard scientists to document global warming impact
...e days earlier every ten years. One team member, fisheries
and wildlife postdoctoral researcher Kimberly Hall at Michigan State University, helped wrangle data that comes not only from scientific outposts, but from the backyard recordings and personal journals of people across the world. The impact of global...
Engineers work on their SUNTANS as they track waves and beaches
...ext. In recent years, tanker accidents have ruined fisheries
and tourist beaches from Alaska to France. But do oil spills always have to end in catastrophe? Perhaps the most vulnerable beaches and coastal habitats could be identified and protected well in advance, if scientists had some way to predict where a ...
Hatchery salmon may endanger wild cousins
...oals from producing bulk quantities for commercial fisheries
and sport fishermen to replenishing wild populations. "Conventional steelhead hatcheries clearly do not lower extinction risks or promote biodiversity," say Levin and Williams. "But the question of whether hatcheries can be altered to aid rather than...
Overfishing may diminish genetic diversity even when millions of fish remain
...sman Bay population. From a practical standpoint, fisheries
managers are not going to be able to monitor genetic diversity for every stock, Hauser says. Instead, if scientists can learn which fish are the very successful breeders and why, then managers may be better able to predict the number of offspring pro...
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