Navigation Links
Stratification determines the fate of fish stocks in the Baltic Sea
Date:2/19/2014

With its narrow connection to the North Sea, strong currents, a large number of river estuaries and a bottom profile marked by ridges, basins and troughs, the Baltic represents an inland sea with highly different water qualities. The fact that these morphological and hydrographic conditions can also influence the fate of fish stocks has now been shown by a team of fisheries biologists from GEOMAR Helmholtz Centre for Ocean Research Kiel and the National Institute of Aquatic Resources (DTU Aqua) at the Technical University of Denmark. For their publication in the international journal Progress in Oceanography, they investigated the densities of cod, plaice and flounder eggs, which determine the position of the eggs within the different salinity layers and thus their dissemination throughout the Baltic Sea. "Our study is an example of how observations of nature, knowledge of the natural processes, and modeling in a bio-physical reference system combine to form a grand picture," emphasizes author Dr. Christoph Petereit. "We have combined a variety of methods in order to learn more of the whereabouts of the eggs and larvae of important fish species."

From January to March 2011, Petereit went on weekly trips to the Baltic with a commercial fisherman to catch animals in spawning condition and to fertilize eggs. Also, on four scientific expeditions with the research vessel ALKOR he collected eggs and sperm. Using glass columns with a precisely calibrated profile of different layers of salt water, the fisheries biologist then determined their density. Their diameter and dry weight were also measured.

Based on this information, the scientists calculated distribution paths of eggs and young fish larvae using a hydrodynamic model. "Our computer program simulated the direction and speed of currents which vary greatly throughout the seasons," said oceanographer Hans-Harald Hinrichsen. "In addition, it realistically models the temperature, salinity
'/>"/>

Contact: Maike Nicolai
mnicolai@geomar.de
49-431-600-2807
Helmholtz Centre for Ocean Research Kiel (GEOMAR)
Source:Eurekalert

Page: 1 2

Related biology news :

1. New diagnostic tool determines aggressiveness of prostate cancer
2. Farm soil determines environmental fate of phosphorous
3. Weapons testing data determines brain makes new neurons into adulthood
4. What determines which sources within an episode are successfully remembered?
5. New avocado rootstocks are high-performing and disease-tolerant
6. New means of safeguarding world fish stocks proven
7. Strategies to improve renewable energy feedstocks
8. Potential harvest of most fish stocks largely unrelated to abundance
9. European fish stocks poised for recovery
10. NREL and Colombian oil firm unlocking agricultural waste feedstocks for biofuel
11. Cod has a key role in the whole Baltic Sea
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/31/2014)... Dr. Oren Tessler, Assistant Professor of Clinical Surgery ... Medicine, is part of a team of plastic and ... a method to screen and select patients for a ... the patients who underwent this surgery to decompress the ... a bonus cosmetic eyelid surgery. The study, which confirms ...
(Date:7/31/2014)... 31, 2014 Biometrics industry sees ... smart technologies; companies turn towards digital currency: NXT-ID, Inc. ... Amazon.com Inc. (NASDAQ: AMZN ), Facebook Inc. ... GOOG ) and Microsoft Corporation (NASDAQ: MSFT) ... the growing m-commerce market, announces a video featuring its ...
(Date:7/30/2014)... paving the way for a breakthrough that may ... exposed to poisonous chemicalsparticularly those in pesticides and ... current issue of the journal ChemBioChem ... compounds commonly used in pesticides and warfare agents. ... of Engineering Associate Professor of Chemical and Biological ...
Breaking Biology News(10 mins):Surgeons report significant migraine relief from cosmetic eyelid surgery technique 2Smart Technology Consumer's Interest in Mobile Payment Products Grows - Company Secures Deal with Major Airline to Display Advertisements in Flight for its Next Generation Smart Wallet 2Smart Technology Consumer's Interest in Mobile Payment Products Grows - Company Secures Deal with Major Airline to Display Advertisements in Flight for its Next Generation Smart Wallet 3Smart Technology Consumer's Interest in Mobile Payment Products Grows - Company Secures Deal with Major Airline to Display Advertisements in Flight for its Next Generation Smart Wallet 4Smart Technology Consumer's Interest in Mobile Payment Products Grows - Company Secures Deal with Major Airline to Display Advertisements in Flight for its Next Generation Smart Wallet 5Smart Technology Consumer's Interest in Mobile Payment Products Grows - Company Secures Deal with Major Airline to Display Advertisements in Flight for its Next Generation Smart Wallet 6Engineering a protein to prevent brain damage from toxic agents 2
... research at Rutgers University may help shed light on how ... people to suffer from life-threatening anxiety disorders while others are ... the Department of Genetics, and a team of researchers, found ... in the roundworm, responsible for receiving information, undergo major changes ...
... often recall their dreams respond more strongly to their name ... of human cognition. It is still not fully known when ... A major difficulty for studying dreams is that they leave ... and colleagues from the Lyon Neuroscience Research Center chose a ...
... and climate events like storms, heavy precipitation and droughts and ... by the global vegetation. A team of scientists under the ... for Biogeochemistry in Jena, Germany, investigated the effect of extremes ... the first time. In the current issue of Nature ...
Cached Biology News:Rutgers study: Worms may shed light on human ability to handle chronic stress 2Frontiers news briefs: Aug. 13 2Frontiers news briefs: Aug. 13 3Extreme weather, climate and the carbon cycle 2
(Date:7/31/2014)... DIEGO and SHENZHEN, China ... announced today the purchase of an Irys™System ... organization. BGI selected BioNano,s platform to enable comprehensive exploration ... improved assemblies for various organisms of interest, including those ... will partner together to develop new methods for multiplexing ...
(Date:7/31/2014)... 31, 2014 Although RNA-Sequencing is ... first transcriptome-wide analyses appearing around 2008, RNA-Sequencing has ... RNA measurement. In the last several years, assays ... work with smaller input amounts, process degraded RNA, ... samples). On the bioinformatics side, there have been ...
(Date:7/31/2014)... Miami, Fla. (PRWEB) July 31, 2014 The ... for distribution of its monthly news magazine, Kidney Cancer News. ... have a presence on a website maintained by an international ... noted an immediate increase in viewers.” , This month’s program ... of kidney tumors analyzed in a recent study. Kidney ...
(Date:7/30/2014)... PARIS , July 30, 2014  Regeneron ... NYSE: SNY) today announced that the Companies intend to ... pediatric disease priority review voucher in connection with the ... review voucher entitles the holder to designate a BLA ... review from the filing date instead of the standard ...
Breaking Biology Technology:BioNano Genomics Announces the Purchase of the Irys System by BGI 2BioNano Genomics Announces the Purchase of the Irys System by BGI 3BioNano Genomics Announces the Purchase of the Irys System by BGI 4The Evolution of RNA-Sequencing, Upcoming Live Webinar August 22 hosted by Xtalks 2Regeneron and Sanofi Announce Plan to Use Priority Review Voucher For Alirocumab U.S. FDA Submission 2Regeneron and Sanofi Announce Plan to Use Priority Review Voucher For Alirocumab U.S. FDA Submission 3Regeneron and Sanofi Announce Plan to Use Priority Review Voucher For Alirocumab U.S. FDA Submission 4Regeneron and Sanofi Announce Plan to Use Priority Review Voucher For Alirocumab U.S. FDA Submission 5Regeneron and Sanofi Announce Plan to Use Priority Review Voucher For Alirocumab U.S. FDA Submission 6
... as a 2010 American Chemical Society Fellowa distinguished group of ... or industry. Donna Nelson, professor in the OU Department ... ceremony at the ACS National Meeting in Boston on August ... second group of chemists to be honored for contributions to ...
... toward understanding the unique and often unexpected properties of ... because of its potential applications in future generations of ... edition of the journal Nature Physics , researchers ... Institute of Standards and Technology (NIST) describe for the ...
... State University have demonstrated the first plastic computer memory ... and write data. An alternative to traditional microelectronics, ... process data faster, and consume less power. In ... Materials , Arthur J. Epstein and colleagues describe how ...
Cached Biology Technology:Study of electron orbits in multilayer graphene finds unexpected energy gaps 2Study of electron orbits in multilayer graphene finds unexpected energy gaps 3Study of electron orbits in multilayer graphene finds unexpected energy gaps 4Researchers successfully test new alternative to traditional semiconductors 2Researchers successfully test new alternative to traditional semiconductors 3
Request Info...
... labware. Waterproof, moisture-proof film prevents sample ... be folded repeatedly and twisted around ... at 21C (70F), wrapping film increases ... removed, film only partially returns to ...
...
Normal human AB serum, pooled...
Biology Products: