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:9/17/2014)... MRSA and MSSA could be curbed by coating ... scaly surface of shark skin, according to research ... Resistance and Infection Control . , The study ... of human disease bacteria through touching, sneezes or ... of ridges formulated to resemble shark skin. The ...
(Date:9/16/2014)... (17 September, 2014)More than $100 trillion in cumulative ... annual carbon dioxide (CO2)a 40 percent reduction of ... if the world expands public transportation, walking and ... released by the University of California, Davis, and ... , Further, an estimated 1.4 million early ...
(Date:9/16/2014)... viruses that make us sick can take up residence ... sneeze, cough or other troublesome symptom, according to new ... Louis. , On average, healthy individuals carry about ... report online in BioMed Central Biology . The ... diversity of viruses in healthy people. , The ...
Breaking Biology News(10 mins):Sharks' skin has teeth in the fight against hospital superbugs 2Global shift away from cars saves US$100 trillion, eliminates 1,700 MT of CO2 pollution 2Global shift away from cars saves US$100 trillion, eliminates 1,700 MT of CO2 pollution 3Global shift away from cars saves US$100 trillion, eliminates 1,700 MT of CO2 pollution 4Global shift away from cars saves US$100 trillion, eliminates 1,700 MT of CO2 pollution 5Healthy humans make nice homes for viruses 2Healthy humans make nice homes for viruses 3
... BETHLEHEM, PA, March 17, 2009 -- Lehigh University ... awarded a $1.8 million grant from the National ... and Other Communication Disorders for his research entitled ... grant will allow Burger to build upon the ...
... between food, nutrition science, and health outcomes have been ... individuals and populations is a new factor that enriches ... the rapidly emerging intersection of nutritional science and genomics ... issue of OMICS: A Journal of Integrative Biology ...
... papilloma virus (HPV)-infections can lead to cellular changes in ... cancer. Surgical treatment of these pre-stages gives an increased ... HPV-vaccine can prevent pre-stages of cervical cancer, it may ... Norwegian study has calculated the benefits of HPV-vaccination. ...
Cached Biology News:Lehigh researcher awarded $1.8 million NIH grant 2Lehigh researcher awarded $1.8 million NIH grant 3Nutrigenomics -- developing personalized diets for disease prevention -- part 2 just published in OMICS 2HPV vaccine may prevent preterm births 2
(Date:9/17/2014)... 2014 First antibacterial ... a truly novel class of anti-infective in ... a biopharmaceutical company developing a truly novel ... has secured £4.0m ($6.4m) to advance the ... a range of Gram-positive infections including  Clostridium ...
(Date:9/16/2014)... 2014 This report analyzes the worldwide markets for ... Hardware, and Biocontent. The report provides separate comprehensive analytics for ... , Europe , Asia-Pacific ... of World. Annual estimates and forecasts are provided for the ... provided for these markets. Market data and analytics are derived ...
(Date:9/16/2014)... film for radar domes have now refined the technology ... , The new work by Rice chemist James Tour ... to skyscrapers free of ice and fog while retaining ... technology was introduced this month in the American Chemical ... , The material is made of graphene nanoribbons, atom-thick ...
(Date:9/16/2014)... DURHAM, N.C. , Sept. 16, 2014 /PRNewswire-USNewswire/ ... and oldest entrepreneurial support organization in the country, ... Innovators Report . It ... North Carolina startups in ... sectors drew more global investment from a variety ...
Breaking Biology Technology:MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 2MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 3MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 4MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 5MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 6MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 7Global Bioinformatics Industry 2Global Bioinformatics Industry 3Global Bioinformatics Industry 4Global Bioinformatics Industry 5Global Bioinformatics Industry 6Global Bioinformatics Industry 7Global Bioinformatics Industry 8Global Bioinformatics Industry 9Global Bioinformatics Industry 10Global Bioinformatics Industry 11Global Bioinformatics Industry 12Global Bioinformatics Industry 13Global Bioinformatics Industry 14Global Bioinformatics Industry 15Global Bioinformatics Industry 16Global Bioinformatics Industry 17Global Bioinformatics Industry 18Global Bioinformatics Industry 19Global Bioinformatics Industry 20Global Bioinformatics Industry 21Global Bioinformatics Industry 22Global Bioinformatics Industry 23Nanoribbon film keeps glass ice-free 2CED's Mid-Year Update to its Innovators Report Shows NC Startups Attracting Investment From Across the Globe with Several High-Profile Investment Deals, IPOs and Acquisitions Signaling Strength of Entrepreneurial Sector 2CED's Mid-Year Update to its Innovators Report Shows NC Startups Attracting Investment From Across the Globe with Several High-Profile Investment Deals, IPOs and Acquisitions Signaling Strength of Entrepreneurial Sector 3CED's Mid-Year Update to its Innovators Report Shows NC Startups Attracting Investment From Across the Globe with Several High-Profile Investment Deals, IPOs and Acquisitions Signaling Strength of Entrepreneurial Sector 4
... by leading European authority on natural/ organic ... Oct. 6 /PRNewswire-FirstCall/ - Botaneco Specialty Ingredients,Inc. (Botaneco), ... that its second generation oleosome product, Hydresia(TM) G2, ... material, complying with,the standards for ecological and organic ...
... software and services company, today announced SPL for ... Documentum,s Documentum Compliance Manager (DCM) application. SPL ... solution and addresses the SPL Release 4 submission ... latest addition to Glemser,s family of pharmaceutical labeling ...
... contains many genes encoding proteins that are similar to those ... for only a small fraction the genome, and there are ... What are these sequences doing, and do we really need ... in Genome Research ( www.genome.org ), researchers have ...
Cached Biology Technology:Botaneco receives natural ingredient approval from ECOCERT(R) for Hydresia(TM) G2 2Botaneco receives natural ingredient approval from ECOCERT(R) for Hydresia(TM) G2 3Glemser Announces New Labeling Solution: SPL for DCM Addresses New SPL Release 4 Requirements 2Use it or lose it? Researchers investigate the dispensability of our DNA 2
Human Apolipoprotein B100 Affinity Purified Polyclonal Ab ENTREZ GeneID: 338...
Mouse Ameloblastin Biotinylated Affinity Purified PAb ENTREZ GeneID: 11698...
Human SOST Affinity Purified Polyclonal Ab...
Homo sapiens CDC23 (cell division cycle 23, yeast, homolog),...
Biology Products: