Navigation Links
When fish farms are built along the coast, where does the waste go?
Date:2/15/2009

ssor of civil and environmental engineering. He created a virtual coastal marine area resembling California's Monterey Bay.

Previous software, he said, has not been up to the task of accurately predicting where the unhealthy effluent from fish pens will end up, and should probably not be used by state or federal regulators when they approve locations for fish farms.

Existing software is typically derived from models that attempt to describe the drift of effluent from sewage outfall pipes, even though the substances and situations are different from fish farms. (Sewage outflow, for example, is often warmer than the ocean water.)

The fine details of modeling the flow of dissolved fish poop from a submerged cage are not as simple as they may seem. The design of the cage itself can affect the outcome. How much of the current flows through the cage, and how much goes around? Does the moving water swirl into eddies at the edges of the pen? Even the effects of the rotation of the earth on the waste plume comes into play.

The fish farmer would prefer that currents flush out his pens frequently, but as those currents take out the garbage they might unfortunately deliver it to a mangrove ecosystem or a public beach. On the other hand, insufficient flow through the pen can create a "dead zone" on the ocean floor as the fecal matter and uneaten food pile up beneath the fish.

Fringer is designing his software so that it can be used to asses any sitePuget Sound, perhapswhere sufficient digital mapping of the area already exists. SUNTANS comes just in time, said Stanford oceans expert Rosamond Naylor, as federal and local officials begin spelling the details of new health and environmental regulations for fish pens.

Also participating in the research was former postdoctoral researcher Subhas Karan Venayagamoorthy, now at Colorado State University.


'/>"/>

Contact: Dan Stober, Stanford News Service
dstober@stanford.edu
650-721-6965
Stanford University
Source:Eurekalert

Page: 1 2

Related biology news :

1. The power of multiples: Connecting wind farms can make a more reliable - and cheaper - power source
2. Fish farms drive wild salmon populations toward extinction
3. Turning freshwater farm ponds into crab farms
4. A win-win: U-pick pumpkin farms recycle urban leaves
5. Tilting at wind farms
6. Built-in exercise monitor predicts fitness
7. A built-in strategy for transgene containment
8. New grants will support research in the sustainable built environment
9. Adaptation to parasites drive African fishes along different evolutionary paths
10. Unfavorable ocean conditions likely cause of low 2007 salmon returns along West Coast
11. Underwater microscope helps prevent shellfish poisoning along Gulf Coast of Texas
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/9/2015)...  Synaptics Inc. (NASDAQ: SYNA ), a leading developer ... report financial results for the fourth quarter and fiscal ... close of market. The company will host a corresponding ... PT (5:00 p.m. ET), during which management may discuss ... live call, analysts and investors should dial 888-455-2260 (conference ...
(Date:7/9/2015)... July 9, 2015  Unchained Labs just can,t ... acquisition of Avid Nano. Avid Nano designs, develops ... systems.    Also today, Unchained Labs ... easiest to use protein sizing system. The pUNk ... protein,s hydrodynamic size, size distribution, aggregation population and ...
(Date:7/8/2015)... YORK , July 8, 2015 Summary ... globally, and the fourth most fatal, with a mortality ... The poor prognosis of pancreatic cancer patients has highlighted ... treatment, which is not being met by the current ... an array of products with varying molecule types and ...
Breaking Biology News(10 mins):Synaptics to Report Fourth Quarter, Fiscal Year 2015 Results on July 30 2Unchained Labs just can't get enough, acquires Avid Nano, rocks out the new pUNk! 2Frontier Pharma: Pancreatic Cancer - Identifying and Commercializing First-in-Class Innovation 2Frontier Pharma: Pancreatic Cancer - Identifying and Commercializing First-in-Class Innovation 3
... -- The Gladstone Institutes will receive funds totaling $5.6 ... major funding initiative focusing on HIV eradication. The funds ... biomedical-research organization, to explore the molecular basis for HIV ... within cells waiting for an opportunity to reemerge when ...
... testing biofilter systems as a viable alternative to releasing ... technology could reduce the overall impact of old landfills ... issue of the International Journal of Environmental Engineering ... sites generates a slow trickle of the potent greenhouse ...
... a high prevalence of vitamin D insufficiency and deficiency ... D levels was not observed in patients in southern ... Arthritis Care & Research , a journal of the ... between disease activity and vitamin D level. ...
Cached Biology News:Gladstone to receive $5.6 million in federal funds to seek a cure for AIDS 2Gladstone to receive $5.6 million in federal funds to seek a cure for AIDS 3Biofilters reduce carbon footprint of old landfill sites 2Vitamin D insufficiency prevalent among psoriatic arthritis suffers 2
(Date:7/30/2015)... ... July 31, 2015 , ... Ralco is honored to ... the Lyon County Fair to be held August 5-9 in Marshall. The Ralco Enrichment ... meals come from and how agriculture impacts their daily lives. This unique exhibit also ...
(Date:7/30/2015)... ... July 30, 2015 , ... Tronics, a designer ... & Marketing Director. , With more than 25 years of experience in ... Tronics’ business development activities worldwide. He brings to the company his strong expertise ...
(Date:7/30/2015)... ... July 30, 2015 , ... Leading regenerative ... study of its canine osteoarthritis stem cell product, currently under development for FDA ... and will be marketed in the US by Aratana. This product, termed AT-016, ...
(Date:7/30/2015)... , July 30, 2015  With over 60,000 customers across the globe, ISN improves ... 450 hiring organizations with more than 60,000 safe and reliable contractors in over 80 countries. ... ... Over ... Headquartered in Dallas, TX ...
Breaking Biology Technology:Ralco Announces Primary Sponsorship of Ralco Enrichment Center at Lyon County Fair 2Tronics appoints Francois Vieillard as Sales and Marketing Director 2VetStem Biopharma Successfully Completes Large Milestone Efficacy Study for its Flagship Canine Osteoarthritis Stem Cell Product 2VetStem Biopharma Successfully Completes Large Milestone Efficacy Study for its Flagship Canine Osteoarthritis Stem Cell Product 3ISN Reaches Over 60,000 Worldwide Customers 2ISN Reaches Over 60,000 Worldwide Customers 3
... Kristin Lucas, ClearTrial Senior Director of Clinical Services, will lead a ... Cash Flow and Accruals" at the CBI Forecasting & Budgeting conference. ... over clinical trial budgets and improve management of clinical trial cash ... ...
... of $0.44 -- increase of 110% from prior year , ... KNSY ), a leading medical technology company that provides ... today reported the results for its second quarter and first six ... , Record EPS of ...
... Calif., Jan. 28 NeuroFocus, the world leader in,the ... named,preeminent cognitive neuroscientist John Polich, Ph.D., as its Director ... company made this selection as it ramps up the ... the United Kingdom, France, Italy, Germany,Japan, Korea, India, and ...
Cached Biology Technology:ClearTrial Selected to Lead Industry Panel on Managing Clinical Trial Cash Flow and Accruals at CBI Conference 2ClearTrial Selected to Lead Industry Panel on Managing Clinical Trial Cash Flow and Accruals at CBI Conference 3Kensey Nash Reports Strong Second Quarter and First Six Month Fiscal Year 2009 Results 2Kensey Nash Reports Strong Second Quarter and First Six Month Fiscal Year 2009 Results 3Kensey Nash Reports Strong Second Quarter and First Six Month Fiscal Year 2009 Results 4Kensey Nash Reports Strong Second Quarter and First Six Month Fiscal Year 2009 Results 5Kensey Nash Reports Strong Second Quarter and First Six Month Fiscal Year 2009 Results 6Kensey Nash Reports Strong Second Quarter and First Six Month Fiscal Year 2009 Results 7Kensey Nash Reports Strong Second Quarter and First Six Month Fiscal Year 2009 Results 8Kensey Nash Reports Strong Second Quarter and First Six Month Fiscal Year 2009 Results 9Kensey Nash Reports Strong Second Quarter and First Six Month Fiscal Year 2009 Results 10Kensey Nash Reports Strong Second Quarter and First Six Month Fiscal Year 2009 Results 11Kensey Nash Reports Strong Second Quarter and First Six Month Fiscal Year 2009 Results 12Kensey Nash Reports Strong Second Quarter and First Six Month Fiscal Year 2009 Results 13Kensey Nash Reports Strong Second Quarter and First Six Month Fiscal Year 2009 Results 14Kensey Nash Reports Strong Second Quarter and First Six Month Fiscal Year 2009 Results 15Kensey Nash Reports Strong Second Quarter and First Six Month Fiscal Year 2009 Results 16Kensey Nash Reports Strong Second Quarter and First Six Month Fiscal Year 2009 Results 17Kensey Nash Reports Strong Second Quarter and First Six Month Fiscal Year 2009 Results 18NeuroFocus Names John Polich, World-Renowned Scientist in Brain Function and Cognition, to Head Global NeuroLab Operations 2NeuroFocus Names John Polich, World-Renowned Scientist in Brain Function and Cognition, to Head Global NeuroLab Operations 3
Mycoplasma tested...
... SAGE (serial analysis of gene ... expression analysis. Expression profiles generated ... to detect low-abundance transcripts making ... genes. The I-SAGE Kit is ...
Human LAIR2 Biotinylated Affinity Purified PAb...
... The mycobacteria in ... cells to the injection site which enhances ... Freund's Adjuvant is used for the initial ... the subsequent boosts. Antigens (preferably in saline) ...
Biology Products: