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Collection: Arctic Biodiversity Trends 2010

Arctic Biodiversity Trends 2010
Arctic Biodiversity Trends 2010
A component of the comprehensive Arctic Biodiversity Assessment (ABA) of the Arctic Council, this report provides a snapshot of the trends being observed in Arctic biodiversity today. Twenty-two indicators examine the current state of the environment. Issues include sea birds, fisheries, climate change, polar bears and traditional knowledge.
Available online at: http://www.grida.no/publications/list/4243.aspx
Invasive species response to climate change - Hydrilla spp, current and 2080 habitat suitability
As climate change alters Arctic ecosystems and enables greater human activity, biological invasions are likely to increase in the Arctic. To some extent, Arctic terrestrial ecosystems may be predisposed to invasion becau...
17 Mar 2010 - by Hugo Ahlenius, GRID-Arendal & CAFF
Trends in vegetation biomass, Ellsmere Island 1995-2007
Data from many sources and at several scales suggest that recent climate change is already affecting terrestrial Arctic ecosystems. Comparisons of historical and contemporary aerial photographs provide evidence that Arct...
17 Mar 2010 - by Hugo Ahlenius, GRID-Arendal & CAFF
Definition of the geographic areas covered in the Arctic Biodiversity Assessment
The Arctic Council study on trends in the polar ecosystems - the Arctic Biodiversity Assessment (ABA) focuses on the areas displayed in this map. The high- and low Arctic regions are defined from the bioclimatic zones in...
17 Mar 2010 - by Hugo Ahlenius, GRID-Arendal & CAFF
Disappearing lakes - Old Crow Basin, Canada (1951-2001)
The Arctic contains a variety of types of lakes but overall, it is thermokarst lakes and ponds that are the most abundant and productive aquatic ecosystems in the Arctic. They are found extensively in the lowland regions...
17 Mar 2010 - by Hugo Ahlenius, GRID-Arendal & CAFF
Permafrost loss in peatlands of northern Quebec, 1957-2003
Over recent years, the southern limit of permafrost in northern peatlands has retreated by 39 km on average and by as much as 200 km in some parts of the Canadian Arctic. Although regional warming by 1.32°C has accelerat...
17 Mar 2010 - by Hugo Ahlenius, GRID-Arendal & CAFF
Bovanenkovo gas field and impacts on reindeer herding (Yamal, Russia)
A false color Quickbird-2 satellite image of a portion of the Bovanenkovo Gas Field on the Yamal Peninsula in West Siberia. Image acquired 4 July 2004. The construction phase began in the late 1980s. From that period onw...
17 Mar 2010 - by Hugo Ahlenius, GRID-Arendal & CAFF
Protected Areas in the Arctic
Protected areas have long been viewed as a key element for maintaining and conserving Arctic biodiversity and the functioning landscapes upon which species depend. Arctic protected areas have been established in strategi...
17 Mar 2010 - by Hugo Ahlenius, GRID-Arendal & CAFF
Trends in lakes in the Arctic
The Arctic contains a variety of types of lakes but overall, it is thermokarst lakes and ponds that are the most abundant and productive aquatic ecosystems in the Arctic. They are found extensively in the lowland regions...
17 Mar 2010 - by Hugo Ahlenius, GRID-Arendal & CAFF
Time series of freeze-up and break-up dates from selected Northern Hemisphere lakes and rivers, 1846–1995
Limited by the availability of detailed observations, most historical evaluations of changes in freshwater ice have focused on relatively simple characteristics, such as the timing of autumn freeze up and spring break up...
17 Mar 2010 - by Hugo Ahlenius, GRID-Arendal & CAFF
Wild rangifer population trends
Wild reindeer and caribou, Rangifer tarandus, are widely distributed around the circumpolar Arctic where they play a key role in the environment, culture, and economy of the region. One of the two major wild reindeer po...
17 Mar 2010 - by Hugo Ahlenius, GRID-Arendal & CAFF
Consumption of harvested meat/fish in Inuit Households (Canada)
The harvest of natural resources is a key feature of traditional lifestyles and economies throughout the Arctic, and a continuing reliance on it as a mainstay of indigenous existence in the north is evident. Environmenta...
17 Mar 2010 - by Hugo Ahlenius, GRID-Arendal & CAFF
Arctic summer snow cover extent 1968-2008
The average snow cover extent during June, July and August across the Arctic (north of the polar circle) section of Eurasia and North America has decreased by 22,000 km2/year during 1968–2008.
17 Mar 2010 - by Hugo Ahlenius, GRID-Arendal & CAFF
Current marine shipping uses in the Arctic
Biological invasions are known from around the globe but are relatively less known or studied in the Arctic. This secondary migration of invasives complicates ecological interactions as naturally occurring species from a...
17 Mar 2010 - by Hugo Ahlenius, GRID-Arendal & CAFF
Trends in speakers of Arctic indigenous languages (1989-2006)
Language not only communicates, it defines culture, nature, history, humanity, and ancestry. The indigenous languages of the Arctic have been formed and shaped in close contact with their environment. They are a valuable...
17 Mar 2010 - by Hugo Ahlenius, GRID-Arendal & CAFF
Trends in Arctic shorebird populations
Shorebirds are the most diverse group of Arctic breeding birds and one of the most abundant. From the Arctic, they migrate to their non-breeding grounds along well-defined flyways that circle the world. As a group, howe...
17 Mar 2010 - by Hugo Ahlenius, GRID-Arendal & CAFF
Distribution and current trend of polar bear subpopulations throughout the circumpolar Arctic
Polar bears occur in 19 relatively discrete subpopulations with an estimated worldwide abundance of 20,000– 25,000 animals. Our knowledge of the status and trend of each subpopulation varies due to availability, reliabil...
17 Mar 2010 - by Hugo Ahlenius, GRID-Arendal & CAFF
Murre sensitivity to changes in temperature
Annual rates of population change of individual murre colonies during 12 years after the 1977 climatic regime shift in the North Pacific and during 9 years after the 1989 shift, in relation to changes in sea surface temp...
17 Mar 2010 - by Hugo Ahlenius, GRID-Arendal & CAFF
Trends in Arctic murre populations
The two species of murres (known as guillemots in Europe), the thick-billed murre, Uria lomvia, and common murre, Uria aalge, both have circumpolar distributions, breeding in Arctic, sub-Arctic, and temperate seas from C...
17 Mar 2010 - by Hugo Ahlenius, GRID-Arendal & CAFF
Distribution of common eider, breeding and wintering ranges in the Arctic
The common eider, Somateria mollissima, has a circumpolar distribution breeding mainly on small islands in Arctic and boreal marine areas in Alaska (Bering Sea region), Canada, Greenland, Iceland, western Europe, and the...
17 Mar 2010 - by Hugo Ahlenius, GRID-Arendal & CAFF
Arctic sea ice food web - schematic illustration
Sea ice represents a unique ecosystem in the Arctic, providing habitat to specialized iceassociated species that include microorganisms, fish, birds, and marine mammals. Individual species use sea ice in different ways d...
17 Mar 2010 - by Hugo Ahlenius, GRID-Arendal & CAFF
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