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:6/7/2016)... -- Syngrafii Inc. and San Antonio Credit Union (SACU) ... Syngrafii,s patented LongPen™ eSignature "Wet" solution into SACU,s ... in greater convenience for SACU members and operational ... document workflow and compliance requirements. Logo ... Highlights: ...
(Date:6/2/2016)... LONDON , June 2, 2016 ... has awarded the 44 million US Dollar project, ... Security Embossed Vehicle Plates including Personalization, Enrolment, and IT Infrastructure ... world leader in the production and implementation of Identity Management ... in January, however Decatur was selected ...
(Date:6/2/2016)... , June 2, 2016 Perimeter ... Platforms, Unmanned Systems, Physical Infrastructure, Support & Other Service  ... visiongain offers comprehensive analysis of the global ... market will generate revenues of $17.98 billion in 2016. ... DVTEL Inc, a leader in software and hardware technologies ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... 2016 On Wednesday, June 22, 2016, ... 0.22%; the Dow Jones Industrial Average edged 0.27% lower to ... down 0.17%. Stock-Callers.com has initiated coverage on the following equities: ... (NASDAQ: NKTR ), Aralez Pharmaceuticals Inc. (NASDAQ: ... BIND ). Learn more about these stocks by accessing their ...
(Date:6/23/2016)... 23, 2016 ReportsnReports.com adds ... to its pharmaceuticals section with historic and forecast ... much more. Complete report on the ... profiling 15 companies and supported with 261 tables ... . The Global Cell Culture ...
(Date:6/22/2016)... ... June 22, 2016 , ... Quantitative Radiology Solutions, the ... current participant in the Phase 1 Ventures program, is leveraging regional and federal ... Radiology Solutions helps physicians make better treatment decisions by quantifying medical imaging using ...
(Date:6/22/2016)... Fla. and ALBANY, N.Y. ... Sciences Corporation (Teewinot) and Albany Molecular Research, Inc. ... AMRI has licensed Teewinot,s technology to produce and ... analytical standard. The CBCA analytical standard is manufactured ... involve the expression of cannabinoid biosynthetic genes in ...
Breaking Biology Technology: