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Current and expected state of the ecosystem

BarentsPortal

The Joint Norwegian-Russian Environmental Status Report for the Barents Sea

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May 23rd
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Current and expected state of the ecosystem

Overview of abiotic compontents - Overview of climate

Overview of abiotic compontents - Overview of climate

The distinctive feature of the atmospheric circulation was an intensification of the Arctic anticyclone during spring and summer, which caused a southward shift of Atlantic cyclone tracks and prevalence of northerly and easterly winds over the Barents Sea.

The Atlantic Water temperature was higher than the average throughout the year of 2008, but colder than in the previous two years. The positive temperature anomalies gradually decreased from January-March to August-September, and then increased again during the autumn.

Last Updated ( Friday, 22 January 2010 12:14 )

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Overview of biotic components - Overview of phytoplankton and zooplankton

Overview of biotic components - Overview of phytoplankton and zooplankton

The spring bloom of phytoplankton at the Bear Island transect in 2008 was within the “normal” period of the spring bloom and started in the end of April. In addition to available nutrients the onset of the spring bloom depends heavily on factors such as stratification and light.

In 2008 the average zooplankton biomass was below the long-term mean. However, the average value for 2008 is based on few...

Last Updated ( Friday, 22 January 2010 12:14 )

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Overview of biotic components - Overwiew of benthos

Overview of biotic components - Overwiew of benthosSeveral species of bottom dwellers are found anchored or crawling on the sea bottom, or living in between already existing communities of benthic animals creating a multi-species habitat. By-catch in bottom trawl indicates that the current distribution of megabenthos in the Barents Sea is highly variable from area to area, with “hot spots” at the Tromsø Flake (mainly sponges), on the Spitsbergen B...

Last Updated ( Friday, 22 January 2010 12:15 )

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Overview of biotic components - Overview of shellfish

Overview of biotic components - Overview of shellfish

The indices of stock size of Northern shrimp (Pandalus borealis) have increased from 2004 to 2006, but decreased again from 2006 to 2008. Given the high probability of the stock being considerably above Bmsy, risk of stock biomass falling below this optimum level in the near future is low.

Last Updated ( Friday, 22 January 2010 12:15 )

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Overview of biotic components - Overview of fish

Overview of biotic components - Overview of fish

Based on the most recent estimates of spawning stock biomass, ICES classifies the stocks of cod and haddock to have full reproductive capacity and being harvested sustainably. Signs of improved recruitment of redfish are now seen in the Barents Sea. In this regard, it is of vital importance that the juvenile age groups be given the strongest protection from being caught as bycatch in any fishery.

T...

Last Updated ( Friday, 22 January 2010 12:15 )

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Overview of biotic components - Overview of marine mammals

Population data are scarce for many species of marine mammals in the Barents Sea, making it difficult to identify population trends and their underlying causes.

Hooded and harp seals are both found in the West Ice and harp seals also breed in the White Sea. The most recent estimate for the West-ice group of harps seals is ~750 000 (2008) and the population is thought to be stable or increasing.

Last Updated ( Friday, 22 January 2010 12:15 )

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Overview of biotic components - Overview of seabirds

Overview of biotic components - Overview of seabirdsAltogether 15 species of seabirds were monitored in 2008 at 18 different locations in the western and southern Barents Sea and the White Sea. The 2008 season was characterized by decrease in the breeding populations of several species in the western Barents Sea, especially along the mainland coast of Norway, from Nordkapp and westwards.

Last Updated ( Friday, 22 January 2010 12:15 )

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Overview of biotic components - Overview of rare and threatened species

Overview of biotic components - Overview of rare and threatened species

The actual area is inhabited by 28 fish species which are either on the Global Red List (8 species), or on the Norwegian Red List (25 species). Among these 13 is DD species, i.e. no scaled evaluation can be done because of lack of knowledge, but the species would probably be on the red list if adequate information had been available.

Barents Sea is inhabited by 26 species (taxons and populations) o...

Last Updated ( Friday, 22 January 2010 12:16 )

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Overview of biotic components - Overview of introduced species

Overview of biotic components - Overview of introduced species

These organisms entered the Barents Sea both in a natural way - through the expansion of habitat due to global warming, and as a result of human activities, related to the intentional or accidental introduction of alien organisms. There are currently 15 species considered introduced and invasive.

Last Updated ( Friday, 22 January 2010 12:16 )

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About BarentsPortal

Polar bears partying on a dead whale carcass. Photo NPI

The BarnetsPortal is a combined web site. It consist of two main elements; presentation of the Joint Norwegian-Russian environmental status report and the Map service. The Report will be updated at regular intervals - initially started with data from 2008. The Map service will continually publish environmental theme data as they become available. Read more...

Status Report. The authors

Puffins in the Barents Sea. Photo NP 

More than 100 experts from a total of 9 Russian and 20 Norwegian institutions have participated in the preparation of the report, and the work has been organized in 13 expert groups. The work has been led by Sevmorgeo and PINRO on Russian side and on Norwegian side by the Institute of Marine Research and the Norwegian Polar Institute..

Find author name here...

Sponsors

The BarentsPortal is a project implemented under the Joint Norwegian-Russian Commission on Environmental Protection. The Portal is a joint Norwegian - Russian instrument designed for the mutual exchange and presentation of information and environmental data relevant to the management of the Barents Sea. It is intended to serve as the future tool for updating of the recently published Norwegian - Russian environmental status report (published here), and for further cooperation on ecosystem-based management of the Barents Sea. 
Ministry of the Environment
Ministry of Natural Resourses of the Russian Federation

The Russian - Norwegian cooperation

Waving kelp at the Norwegian coast. Photo IMR

BarentsPortal is a project developed under the Joint Russian - Norwegian Commission on Environmental Cooperation. The joint environmental report is a co-operation project between the Joint Russian - Norwegian Commission on Environmental Cooperation and the Joint Russian-Norwegian Fisheries Commission

Read about Joint Russian - Norwegian Commission on Environmental Cooperation (unfortunately only in Norwegian - please use web based translation)

Read about the Joint Russian-Norwegian Fisheries Commission

Recommended reading

 

General description of the Barents Sea ecosystem

The Barents Sea is a sub-Arctic shelf ecosystem located between 70° and 80°N. It connect...

 

Current status of the ecosystem

 

Aspects of future change

The following aspects of possible long-term changes in the ecosystem are discussed in the ...

 

Issues relevant for ecosystem management

The following themes are highlighted as examples of issues that are relevant for developme...

 

Future needs for monitoring and integrated status reports

The expected increases in the number and type of impacts on the ecosystem put a premium on...

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