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:2/1/2016)... February 1, 2016 Rising sales ... drive global touchfree intuitive gesture control market ... Rising sales of consumer electronics coupled with new technological ... size through 2020   ... with new technological advancements to drive global touchfree intuitive ...
(Date:1/25/2016)... , Jan. 25, 2016   Unisys Corporation (NYSE: ... at John F. Kennedy (JFK) International Airport, New York ... (CBP) identify imposters attempting to enter the United ... belong to them. pilot testing of the system ... at three terminals at JFK during January 2016. --> ...
(Date:1/20/2016)... , Jan. 20, 2016 A market that ... directly benefit from the explosion in genomics knowledge. Learn ... Sound Research. A range of dynamic trends are pushing ... - personalized medicine - pharmacogenomics - pathogen evolution - ... large markets - greater understanding of the role of ...
Breaking Biology News(10 mins):
(Date:2/12/2016)... , February 12, 2016 ... by Enabling Scientific Understanding of Complex Diseases Such ... Diseases --> --> ... in South Asia and a leading provider of genomics ... $10 million to the GenomeAsia 100K consortium as ...
(Date:2/11/2016)... -- Neurocrine Biosciences, Inc. (NASDAQ: NBIX ) today announced its financial ... --> --> For the fourth ... million, or $0.34 loss per share, compared to a net loss ... period in 2014. For the year ended December 31, 2015, the ... per share, as compared to a net loss of $60.5 million, ...
(Date:2/11/2016)... HILDEN , Germany and ... QGEN ; Frankfurt Prime Standard: ... new QIAseq Targeted RNA Panels for gene expression profiling, ... next-generation sequencing (NGS). The panels enable researchers to select ... expression fold changes and discover interactions between genes, cellular ...
(Date:2/11/2016)... , Feb. 11, 2016  Spectra BioPharma Selling ... (CSO) that provides biopharma companies the experience, expertise, ... and deploy outsourced sales teams. Created in concert ... addresses both the strategic and tactical needs of ... sales solutions through both personal and non-personal promotion. ...
Breaking Biology Technology: