Navigation Links
Change strategy to save diversity of species
Date:4/18/2011

Active efforts are required to preserve biodiversity in the seas that far most people are in agreement. But in our enthusiasm to save uncommon species, we sometimes miss the common species that form the basis of marine ecosystems. 'Change strategy' is the challenge to the authorities from researchers at the University of Gothenburg, Sweden.

An inconceivably large proportion of the animals that live in the seas are so uncommon that it is difficult to find more than a few specimens. Committing most resources to saving individual species is not just an expensive business it would also risk destroying the foundation for ecosystems, the research of Professor Kerstin Johannesson shows.

Her research team is able to demonstrate that it is the common species that are of really great significance for ecosystems, by establishing habitats for other species. It is therefore in all probability the most common species that determine the future of all species. If the common species disappear, it will have great consequences.

An alarming example of what can happen is that the cod populations in the fjords of the Bohusln coast have almost without exception disappeared. These fjords have consequently lost one of their most important species. It can have far-reaching consequences for several other species when the environments of the shallow bays change.

"Without the big predatory fish, the sea-grass meadows become clogged, with the result that the shallow bays no longer act as larders and nurseries for inshore fish. While life slowly dies out, the blame is put on eutrophication."

Kerstin Johannesson's research is concerned with how different populations within one species may be so genetically different that they actually do not have very much to do with each other, and that in particular they are not interchangeable. If a local population disappears, it will not automatically be replaced by individuals from another population migrating in. In the worst case, even individuals of the other population are unable to cope in the environment of the extinct population.

"That's how it is with the cod populations in Bohusln. Despite tough restrictions on catches and despite North Sea cod visiting the Bohusln fjords every year, we are not getting the cod populations back. A similar example is the cod off the coast of Newfoundland in Canada, which have not returned despite a complete halt to fishing for nearly 20 years."

Focusing on the species in order to preserve species diversity in the seas is therefore an incorrect approach that may instead lead to greater losses. Despite this, there is a lack of legislation and recommendations today on how genetic variation within species should to be managed.


'/>"/>

Contact: Kerstin Johannesson
Kerstin.Johannesson@marecol.gu.se
465-266-8611
University of Gothenburg
Source:Eurekalert  

Related biology news :

1. Invasive mussels causing massive ecological changes in Great Lakes
2. Icy meltwater pooling in Arctic Ocean: A wild card in climate change scenarios
3. Epidemiological tree study shows impacts of climate change on forests
4. Genetic changes behind sweet tooth
5. Climate change and evolution of Cross River gorillas
6. Epidemiological study demonstrates climate change effects on forests
7. Some populations of Fraser River salmon more likely to survive climate change: UBC study
8. Russian boreal forests undergoing vegetation change, study shows
9. Study predicts large regional changes in farmland area
10. Uncertain future for Joshua trees projected with climate change
11. Small code change, big effect
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Change strategy to save diversity of species
(Date:1/22/2016)... , Jan. 22, 2016 ... addition of the "Global Biometrics Market ... their offering. --> http://www.researchandmarkets.com/research/p74whf/global_biometrics ... "Global Biometrics Market in Retail Sector ... --> Research and Markets ( ...
(Date:1/18/2016)... , Jan. 18, 2016  Extenua Inc., a ... simplifies the use and access of ubiquitous on-premise ... partnership with American Cyber.  ... experience leading transformational C4ISR and Cyber initiatives in ... the latest proven technology solutions," said Steve ...
(Date:1/11/2016)... , Jan. 11, 2016  higi, the leading ... 10,000 retail locations, web and mobile, today announced ... million from existing investors. --> ... devoted to further innovate higi,s health platform – ... web portal – including expanding services and programs ...
Breaking Biology News(10 mins):
(Date:2/3/2016)... , Feb. 3, 2016 New ... more than $1 million for researchers in ... on health-related research that demonstrates exciting potential.   ... of funding for the New Jersey Health Foundation Research ... members at these educational institutions— Princeton University, Rutgers ...
(Date:2/3/2016)... (PRWEB) , ... February 03, 2016 , ... ... validating a series of potential targets (epitopes) specific to misfolded, propagating strains of ... to create specific monoclonal antibody therapeutics for Alzheimer’s. , Following on from the ...
(Date:2/3/2016)... ... February 03, 2016 , ... Resilinc ... summarizes and analyzes nearly 750 unique supply chain notifications and alerts generated by ... , Supply chain risk management practitioners subscribe to the EventWatch service to receive ...
(Date:2/3/2016)...  Today, Symphony Technology Group (STG) announced the closing ... provider of primary research and analytics-based insight for biopharmaceutical ... a global information and technology services company serving the ... be integrated into IMS Health to form a foundation ... ...
Breaking Biology Technology: