Navigation Links
Cod has a key role in the whole Baltic Sea
Date:4/18/2012

A new investigation put in evidence the key role of cod as regulator of the whole Baltic Sea ecosystem. The study shows that when the cod population in the central Baltic increases, it spreads into larger areas and spills over into adjacent marginal systems where it usually does not occur, as for example the Gulf of Riga.

On the other hand, when the cod population size in the central Baltic decreases, it concentrates into the southern Baltic Sea and disappears from the other systems where it cannot reproduce. Cod population size and spatial expansions/contractions in the Baltic landscape depend on fishing pressure and hydro-climatic conditions in the central Baltic that acts as source of cod for the more coastal and northern areas.

The presence/absence of cod in the Gulf of Riga impacts the whole local ecosystem, from the main pelagic fish, the herring, to the zooplankton and phytoplankton through a "trophic cascade". The presence of cod in the Gulf of Riga can therefore decrease the intensity of the local algal blooms. However, other local factors also affect the Gulf of Riga ecosystem, as local fishing on cod and herring, temperature and river runoff transporting nutrients into the Gulf.

This study increases our knowledge on the predators' effects on ecosystem structure, and stresses the importance of linking both local and regional processes for a full understanding of ecosystem functioning on a broader landscape scale. Investigations on the functional implications of cross-system fluxes of organisms are central in the management of exploited resources and ecosystem conservation.

SLU-researcher Michele Casini was the leader of the study in collaboration with other scientists from Sweden, Denmark, Latvia, Germany and Norway. The analysis is based on biological and hydrological data collected in the Baltic Sea during a 35-year period.

The results of the study have been published early edition online in the scientific journal Proceedings of the National Academy of Sciences of the USA, 13 April 2012, with the title Predator transitory spillover induces trophic cascades in ecological sinks.


'/>"/>

Contact: Mikael Propst
46-703-710-353
Swedish Research Council
Source:Eurekalert  

Related biology news :

1. St. Josephs receives Canadas first whole-body PET/MRI scanner
2. A whole new meaning for thinking on your feet
3. Brigham and Womens Hospital awarded $9.6 million to study whole genome sequencing
4. Scripps launches whole genome sequencing study to find root causes of idiopathic diseases
5. Health benefits of broccoli require the whole food, not supplements
6. BGI contributes whole genome sequencing and bioinformatics expertise to potato genome research
7. First whole-genome lung cancer study by TGen and Virginia G. Piper Cancer Center set for conference
8. Sea urchins see with their whole body
9. Gerry A. Higgins, Ph.D. Joins GenomeQuest to Foster Development of Whole Genome Diagnostics
10. NIH researchers complete whole-exome sequencing of skin cancer
11. Eating mostly whole grains, few refined grains linked to lower body fat
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Cod has a key role in the whole Baltic Sea
(Date:4/5/2017)... KEY FINDINGS The global market for stem ... 25.76% during the forecast period of 2017-2025. The rise ... growth of the stem cell market. Download ... The global stem cell market is segmented on the ... cell market of the product is segmented into adult ...
(Date:3/30/2017)... 2017  On April 6-7, 2017, Sequencing.com will host ... hackathon at Microsoft,s headquarters in Redmond, ... on developing health and wellness apps that provide a ... Genome is the first hackathon for personal genomics ... companies in the genomics, tech and health industries are ...
(Date:3/29/2017)... 2017  higi, the health IT company that operates ... America , today announced a Series B investment ... EveryMove. The new investment and acquisition accelerates higi,s strategy ... transform population health activities through the collection and workflow ... higi collects and secures data today on behalf of ...
Breaking Biology News(10 mins):
(Date:4/27/2017)... ... April 27, 2017 , ... Volunteers supported ... scientists, researchers, engineers, and industry professionals in visiting U.S. Congressional offices in Washington, ... in the world photonics industry. , This year, National Photonics Initiative ...
(Date:4/26/2017)... ... April 26, 2017 , ... Looking for gift ideas ... events company, offers one-of-a-kind gifts, ranging from gourmet cooking experiences to Farmer’s Market ... guests leave inspired with new cooking tips and techniques, thanks to Chef Jodi ...
(Date:4/26/2017)... ... April 26, 2017 , ... Baltimore bio tech firm, PathSensors, ... screening solution at the National Postal Forum 2017 in Baltimore, Maryland, May 21st ... accurate, easy to use and low cost threat detection solution for government and ...
(Date:4/25/2017)... (PRWEB) , ... April 25, 2017 , ... As part ... the series will explore the laboratory testing for DIC in order to illuminate this ... disorder which can occur in hospitalized patients resulting in a high degree of morbidity ...
Breaking Biology Technology: