Graphics Library >> Ecosystem

Tag: Ecosystem

Marine, coastal, and island systems
Marine systems are the world’s oceans. For mapping purposes, the map shows ocean areas where the depth is greater than 50 meters. Global fishery catches from marine systems peaked in the late 1980s and are now declining ...
30 Nov 2007 - by Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
Species extinction rates
Comparisons with the rate at which species have disappeared from the planet over a long period of Earth’s history indicate that humans have already increased extinctions levels dramatically. Projections suggest that this...
30 Nov 2007 - by Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
Millennium Ecosystem Assessment conceptual framework
International demand for timber may lead to a regional loss of forest cover, which increases flood magnitude along a local stretch of a river. Similarly, the interactions can take place across different time scales. Acti...
30 Nov 2007 - by Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
Linkages between ecosystem services and human well-being
There are many linkages between categories of ecosystem services and components of human well-being. They includes indications of the extent to which it is possible for socioeconomic factors to mediate the linkage. For e...
30 Nov 2007 - by Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
Millennium Ecosystem Assessment - Sub-global assessments
Eighteen sub-global assessments were approved as components of the Millennium Ecosystem Assessment (MA). These were not designed to provide a scientific sample of any feature of ecosystems or human well-being. Instead, t...
30 Nov 2007 - by Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
Main direct drivers of change in biodiversity and ecosystems (CWG)
The cell color indicates impact of each driver on biodiversity in each type of ecosystem over the past 50–100 years. High impact means that over the last century the particular driver has significantly altered biodiversi...
30 Nov 2007 - by Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
Net change in components of human well-being between 2000 and 2050
Order from Strength, which focuses on reactive policies in a regionalized world, has the least favorable outcomes for human well-being, as the global distribution of ecosystem services and human resources that underpin h...
30 Nov 2007 - by Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
Number of ecosystem services enhanced or degraded by 2050
100% degradation means that all the services in the category were degraded in 2050 compared with 2000, while 50% improvement could mean that three out of six services were enhanced and the rest were unchanged or that fou...
30 Nov 2007 - by Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
Characteristic time and space scales related to ecosystems and their services
The time scale of change refers to the time required for the effects of a perturbation of a process to be expressed. Inertia refers to the delay or slowness in the response of a system to factors altering their rate of c...
30 Nov 2007 - by Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
A multifunctional perspective of agriculture
In IAASTD, multifunctionality is used solely to express the inescapable interconnectedness of agriculture’s different roles and functions. The concept of multifunctionality recognizes agriculture as a multi-output activi...
03 Jan 2008 - by IAASTD/Ketill Berger, UNEP/GRID-Arendal
Natural resources for pro-poor economic growth
To alleviate rural poverty, one way is to sustainably use the natural resources available to the people and the communities. By supporting and expanding fisheries, small-scale mining, forestry, ecosystem services and oth...
12 May 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Forest vs. Agriculture – the case of the Mabira forest reserve, Uganda
The Mabira forest reserve, on the shores of Lake Victoria hosts valuable wildlife, serves as a timber resource, provides ecosystem services for the water balance and the rainforests represents a tourist destination. Foll...
12 May 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Protected areas, Arctic and Antarctic
Protected areas are very important for conserving biodiversity. In these areas, human activities are managed to achieve specific conservation goals, for example, to protect a certain species or to conserve a representati...
31 Jul 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Potential for cropland expansion
Current projections suggest that an additional 120 million ha – an area twice the size of France or one-third that of India – will be needed to support the traditional growth in food production by 2030, mainly in deve...
02 Feb 2009 - by Hugo Ahlenius, UNEP/GRID-Arendal
Projected land use changes
A central component in preventing loss of biodiversity and ecosystem services, such as provisioning of water, from expanding agricultural production is to limit the trade-off between economic growth and biodiversity b...
02 Feb 2009 - by Hugo Ahlenius, UNEP/GRID-Arendal
A photographic impression of the gradual changes in two ecosystem types
Globally, over 1,000 (87%) of a total of 1,226 threatened bird species are impacted by agriculture. More than 70 species are affected by agricultural pollution, 27 of them seriously. Europe’s farmland birds have decl...
02 Feb 2009 - by Hugo Ahlenius, UNEP/GRID-Arendal
Boreal forest
The boreal forest biome holds the second largest stock of carbon; most of this is stored in the soil and litter. The draining of boreal forest peatlands, inappropriate forestry practices and poor fire management may al...
27 May 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
World soil demand
Human needs and ecosystem conservation
01 Nov 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Forest, crops and the people
There are competing demands for land use. Any policy that aims to promote ecosystem carbon management must resolve conflicts between different land uses and take care not to disadvantage the poor.
27 May 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Water desalination
Desalination is an increasingly important practice to secure clean water in a number of countries. Monitoring is key to minimize negative impacts on the ecosystem.
01 Mar 2010 - by UNEP/GRID-Arendal
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