Navigation Links
Leave it to salmon to leave no stone unturned

Like an armada of small rototillers, female salmon can industriously churn up entire stream beds from end to end, sometimes more than once, using just their tails.

For decades ecologists have believed that salmon nest-digging triggered only local effects. But a University of Washington researcher writes in this month's BioScience journal that the silt, minerals and nutrients that are unleashed have ecosystemwide effects, causing changes in rivers and lakes far from the nests.

From decreasing the amount of algae there is to eat to possibly influencing when aquatic insects emerge, spawning salmon can be extraordinary "environmental engineers," says Jonathan Moore, a UW graduate student in aquatic and fishery sciences.

Ignoring this role can cause missteps in managing salmon runs or attempting to rehabilitate habitat, he says. A major loss in the number of salmon, for example, doesn't just affect future generations of that fish alone.

"In streams with high densities of salmon, the disturbance from spawning impacts virtually all aspects of stream ecology," he says.

The female salmon, of course, isn't concerned about all that. She simply wants to lay her eggs in a nice, gravel-bottom bowl that's free of fine sediments that can smother them.

But consider the efforts of the grand dames of the salmon world, the female chinook ?or king ?salmon. The largest females are more than a yard long and tip the scales at 45 pounds or more. The biggest nests are nearly a foot and a half deep and extend up to 17 square yards –about the size of two parking-lot stalls. The rims around these craters can be the bane of boaters who, even with boats meant to navigate in shallow waters, can find their vessels grounded.

Smaller species of salmon that spawn at higher densities are capable of even more widespread tilling, according to Moore, who has for six summers worked with sockeye salmon through the UW's Alaska Salmon Program. Using count
'"/>

Source:University of Washington


Page: 1 2 3

Related biology news :

1. Researchers reveal the infectious impact of salmon farms on wild salmon
2. Alaskan puzzles, monitoring provide insight about North Pacific salmon runs
3. To sea or not to sea: When it comes to salmon sex, size sometimes doesnt matter
4. Divergent life history shapes gene expression in brains of salmon
5. Escapee farmed salmon infiltrate fitter wild populations
6. Special chip provides better picture of salmon health
7. Farmed salmon could become an invasive species in forest streams
8. New report: Explosive growth changes salmon industry
9. Brain size may depend upon how neural cells are cleaved
10. Depression model leaves mice with molecular scar
11. Tumor cells that border normal tissue are told to leave
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Leave salmon leave stone unturned

(Date:7/30/2014)... biologists, led by Clemson University associate professor Andrew S. ... will pave the way for novel anti-fouling paint for ... and industrial applications. , The team,s findings, published in ... larval stage of barnacles that attaches to a wide ... material that acts as an underwater heavy-duty adhesive. , ...
(Date:7/30/2014)... , July 30, 2014 NexID ... and liveness detection solutions for the biometric authentication ... industry consortium revolutionizing online authentication with standards for ... Cornett , "The decision to join FIDO Alliance ... authentication pervasive in use. We believe the FIDO ...
(Date:7/30/2014)... out how to create colors, nature had already perfected ... many different hues, for example. Now scientists are tapping ... way to make colored plastics. Their paper on using ... rather than dyes, to produce color appears in ... Asger Mortensen, Anders Kristensen and colleagues point out that ...
Breaking Biology News(10 mins):Study: Marine pest provides advances in maritime anti-fouling and biomedicine 2NexID Biometrics Joins the FIDO Alliance 2
... Va. A five-year-old Virginia Tech outreach program, ... doing research and providing results that scientists can ... Partnership Award from the National Center for Research ... of Health. The Fralin Life Science Institute,s Partnership ...
... If you would like to receive Science Picks via e-mail, ... to receive it, please e-mail kcapelli@usgs.gov . October ... Sumatra Earthquakes, DOI Prepared to Address Climate Change, Water is ... of Seismic Proportions, Forget the Garlic Necklace! Learn More about ...
... attention to National Child Health Day (today), the Preventive Cardiovascular ... consumer survey and launched a campaign to educate families about ... The national survey revealed that more than three in ... heart disease do not begin until adulthood. ...
Cached Biology News:NIH funds new phase of high school-university research partnership 2NIH funds new phase of high school-university research partnership 3USGS Science Picks 2USGS Science Picks 3USGS Science Picks 4USGS Science Picks 5USGS Science Picks 6USGS Science Picks 7USGS Science Picks 8USGS Science Picks 9Americans concerned about heart health, but not proactive enough to prevent it 2
(Date:7/30/2014)... 2014 While administrative claims and ... research for a relatively long period of time, ... the use of these ‘big data’ for comparisons ... combining today’s powerful computer technology with the plethora ... data’ holds significant promise for identifying optimal interventions ...
(Date:7/30/2014)... , July 30, 2014   Wyle ... the Fully Integrated Lifecycle Mission Support Services (FILMSS) ... Administration (NASA). Under the terms of the contract, ... Center at Moffett Field, Calif. In particular, Wyle ... bioscience flight development projects on the International Space ...
(Date:7/30/2014)... July 30, 2014 BCC Research ( ... Markets for Enzymes in Industrial Applications , the global ... nearly $7.1 billion by 2018, registering a five-year compound ... estimated to be recorded in the detergent enzyme segment ... , Enzyme technology has influenced almost every sector of ...
(Date:7/30/2014)... , July 30, 2014  Orexigen Therapeutics, Inc. ... received the Day 180 List of Outstanding Issues (LOI) ... for Human Use (CHMP) for the NB32 Marketing Authorization ... SR) is an investigational drug candidate being evaluated for ... earlier Day 120 time point were adequately addressed by ...
Breaking Biology Technology:Leveraging ‘Big Data’ - Methodological Considerations in Health Services Research, New Webinar Hosted by Xtalks 2Wyle Wins NASA's Fully Integrated Lifecycle Mission Support Services Contract 2Global Market for Industrial Enzymes to Reach Nearly $7.1 Billion by 2018; Detergent Enzyme Market to Record Maximum Growth 2Global Market for Industrial Enzymes to Reach Nearly $7.1 Billion by 2018; Detergent Enzyme Market to Record Maximum Growth 3Orexigen Receives CHMP Day 180 List of Outstanding Issues 2Orexigen Receives CHMP Day 180 List of Outstanding Issues 3
... 2011 Arecor, the leading company ... and vaccines, is pleased to announce the appointment ... Howell will be responsible for the operations of ... Arecor,s upward growth curve ensuring the company continues ...
... Nov. 10, 2011 Avaxia Biologics, Inc. , ... act locally within the gastrointestinal tract, announced today that ... of a Series A angel-led financing. Cherrystone Angels of ... Boston Harbor Angels and other undisclosed individuals. Mr. Robert ...
... Discovery Laboratories, Inc. (Nasdaq: DSCO ), ... respiratory critical care, today reports financial results for the third ... of the SURFAXIN® and AFECTAIR™ programs.  The Company will host ... call details are below. Selected third quarter highlights ...
Cached Biology Technology:Arecor Appoints Dr. Sarah Howell as Chief Operating Officer 2Avaxia Biologics, Inc. Raises $2.2 Million in First Closing of Series A Financing to Advance Oral Antibodies for Inflammatory Bowel Disease 2Discovery Labs Reports Third Quarter Financial Results and Progress on Lead Programs 2Discovery Labs Reports Third Quarter Financial Results and Progress on Lead Programs 3Discovery Labs Reports Third Quarter Financial Results and Progress on Lead Programs 4Discovery Labs Reports Third Quarter Financial Results and Progress on Lead Programs 5Discovery Labs Reports Third Quarter Financial Results and Progress on Lead Programs 6Discovery Labs Reports Third Quarter Financial Results and Progress on Lead Programs 7Discovery Labs Reports Third Quarter Financial Results and Progress on Lead Programs 8Discovery Labs Reports Third Quarter Financial Results and Progress on Lead Programs 9
...
BD BioCoat Poly-D-Lysine 60 mm Culture Dishes, tissue-culture treated polystyrene with a uniform application of poly-D-lysine....
... 4000 incorporates the critical design features demanded ... biomarker research. The Series 4000 delivers improved ... biomarker discoveries to biomarker assays all on ... designed to fit into the research plans ...
Gelatin 100 mm Culture Dishes...
Biology Products: