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Tag: Marine ecology

Seabed habitats in Western Mediterranean
The Mediterranean Basin has a wide array of habitats that include sea grass beds, intact rocky shorelines, persistent frontal systems, estuaries, underwater canyons, deepwater coral assemblages and sea mounts (UNEP/MA...
19 Nov 2013 - by GRID-Arendal
Composition of benthic communities
Benthic communities are among the first to disappear under conditions of heavy stress. Benthic organisms play an important ecological role by reworking the sediments, which affects the flux of nutrients across the sedi...
19 Nov 2013 - by GRID-Arendal
Non-indigenous species over the 20th Century
Both the number and rate of non-indigenous introductions to the Mediterranean have been increasing in recent years (UNEP/ MAP 2009). Currently, about a thousand non-indigenous aquatic species have been identified in t...
19 Nov 2013 - by GRID-Arendal
Comb jelly (Mnemiopsis leidyi) abundance variation in the Caspian Sea
One Comb jelly species has been introduced into the Caspian Sea – Mnemiopsis leidyi. The invasion of this jelly during the late 1990s represents one of the main environmental issues in this unique ecosystem, and is consi...
17 Oct 2013 - by GRID-Arendal
How the comb jelly (Mnemiopsis leidyi) is spreading in the European seas
One Comb jelly species has been introduced into the Caspian Sea – Mnemiopsis leidyi. The invasion of this jelly during the late 1990s represents one of the main environmental issues in this unique ecosystem, and is consi...
17 Oct 2013 - by GRID-Arendal
Production of nitrogen
The rapid increase in the production of reactive nitrogen via the Haber-Bosch process correlates closely with the increase in world population from about 2.6 billion in 1950 to over 6 billion in 2000 (figure page 78). B...
16 Oct 2013 - by GRID-Arendal
Long- term changes in the CHl-a levels in the Black Sea
Illustration in a set of graphics prepared for a pilot assessment report on the Black Sea drainage basin, for the UNEP Global Impact on Waters Assessment (GIWA). All data and information were prepared in close collaborat...
07 Nov 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal