Navigation Links
Climate change threatens marine environment in the Baltic Sea
Date:10/25/2012

At the end of the 21st century, the temperature in the Baltic Sea will be higher and the salt content lower than at any time since 1850. If no action is taken to alleviate the effects of climate change, there may be major consequences for the marine environment.

"This is the first time that anyone has taken a detailed look at how climate models and individual factors combine to affect a specific region. This makes this project unique," says Jonathan Havenhand from the Department of Biological and Environmental Sciences at the University of Gothenburg, Sweden.

A large number of researchers from countries around the Baltic Sea have been collaborating on an interdisciplinary project to study the effects of global climate change on the environment in the Baltic Sea. They have combined today's best climate models with models of additional factors that affect the environment in the Baltic Sea.

"There are plenty of studies showing the environmental impact of individual factors, or models showing global changes in the climate, but this is the first time that anyone has taken a detailed look at how these factors combine to affect a specific region. This makes this project unique," says Jonathan Havenhand from the Department of Biological and Environmental Sciences at the University of Gothenburg.

Researchers have studied how well the models work by entering data from 1850 until 2006, and then comparing the models' predictions with what actually happened during that period.

The models proved to be reasonably accurate, and were therefore used to predict what will happen in the Baltic Sea between now and 2098. The models show that the salt content in the Baltic Sea will fall and that the temperature will rise as a consequence of increases in air temperature and precipitation.

The increase in temperature will cause the oxygen content of the water to fall, making the effects of eutrophication more pronounced. The change in salt content may result in species that are currently at the edge of their dispersion area disappearing, leading to a decline in the diversity of species.

"One such example is the blue mussel, which cannot survive if the salt content is lower than it is at present in the Northern Baltic Sea. It feeds on algae and purifies large volumes of water. This makes it an important species. We can also expect cod stocks to fall, even if we restrict fishing, as the oxygen content, temperature and salt content will change so much that reproduction will become difficult," says Jonathan Havenhand.

In their study, the researchers showed that despite these changes it may be possible to counteract the effects of global climate change on the environment in the Baltic Sea, for example by reducing the run-off of nutrients from land. One special feature of the study is that it quantifies the effects of such measures.

"We aren't making any judgement about what should be done, we're simply providing a tool to allow decision-makers to assess what needs to be done in order to achieve a given desired effect," says Jonathan Havenhand.

But according to a questionnaire-based survey conducted among decision-makers in the countries around the Baltic Sea, those in power would prefer to wait. The results showed that while they might view climate change as a problem, it is perceived to be something relatively remote in terms of time.

This led researchers to the conclusion that more information is needed about the importance and urgency of measures to counteract the effects of climate change.

The results of the study will contribute to the Helsinki Commission's (HELCOM) proposed action plan for the Baltic Sea.
'/>"/>

Contact: Jonathan Havenhand
jon.havenhand@bioenv.gu.se
46-317-869-682
University of Gothenburg
Source:Eurekalert

Related biology news :

1. US underestimates costs of carbon pollution and climate change
2. Effectiveness and impact of climate change mitigation measures unclear
3. Most coral reefs are at risk unless climate change is drastically limited
4. Forest mortality and climate change: The big picture
5. Plants fungi allies may not help store climate changes extra carbon
6. Coral scientists use new model to find where corals are most likely to survive climate change
7. New Nature study illuminates 55 million years of the carbon cycle and climate history
8. Climate change could increase levels of avian influenza in wild birds
9. Cooled coal emissions would clean air and lower health and climate-change costs
10. American Meteorological Society releases revised climate change statement
11. Massachusetts butterflies move north as climate warms
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/26/2016)... , April 27, 2016 ... the  "Global Multi-modal Biometrics Market 2016-2020"  report to ... ) , The analysts forecast the ... CAGR of 15.49% during the period 2016-2020.  ... number of sectors such as the healthcare, BFSI, ...
(Date:4/15/2016)... April 15, 2016  A new partnership announced ... accurate underwriting decisions in a fraction of the ... priced and high-value life insurance policies to consumers ... With Force Diagnostics, rapid testing (A1C, Cotinine ... readings (blood pressure, weight, pulse, BMI, and activity ...
(Date:4/14/2016)... , April 14, 2016 ... Malware Detection, today announced the appointment of Eyal ... new role. Goldwerger,s leadership appointment comes at ... heels of the deployment of its platform at several ... biometric technology, which discerns unique cognitive and physiological factors, ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... NEW YORK , June, 23, 2016  The ... students to envision new ways to harness living systems ... of Modern Art (MoMA) in New York ... more than 130 participating students, showcased projects at MoMA,s ... included Paola Antonelli , MoMA,s senior curator of ...
(Date:6/23/2016)... Apellis Pharmaceuticals, Inc. today announced positive ... its complement C3 inhibitor, APL-2. The trials were ... studies designed to assess the safety, tolerability, pharmacokinetics ... healthy adult volunteers. Forty subjects were ... dose (ranging from 45 to 1,440mg) or repeated ...
(Date:6/23/2016)... ... June 23, 2016 , ... Regulatory ... technical consulting, provides a free webinar on Performing Quality Investigations: Getting ... at 12pm CT at no charge. , Incomplete investigations are still a major ...
(Date:6/22/2016)... 22, 2016 Research and Markets has announced ... report to their offering. ... from $29.3 billion in 2013. The market is expected to grow ... 2015 to 2020, increasing from $50.6 billion in 2015 to $96.6 ... during the forecast period (2015 to 2020) are discussed. As well, ...
Breaking Biology Technology: