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Tag: Marine pollution

Sources of environmental impact on the Mediterranean Sea
The National Center for Ecological Analysis and Synthesis (NCEAS) has undertaken modelling to perform comprehensive spatial analysis and mapping of human pressures throughout the Mediterranean Basin. This work builds o...
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
Sources of emissions of nutrients in the Mediterranean region, 2008
Nutrients in seawater present a paradox. Nutrients are, of course, essential for life. In the oligotrophic environment of the Mediterranean, the ecosystems with the most nutrients are generally the most productive and d...
19 Nov 2013 - by GRID-Arendal
Major types of marine litter in the Mediterranean
A large proportion of marine litter is plastics (UNEP 2009). The impact of large plastic material on the environment has been widely studied. Effects include entanglement of marine animals in plastic and ingestion of ...
19 Nov 2013 - by GRID-Arendal
Chlorinated pesticides and HCB/PCBs releases by sector, 2008
HCB and PCBs are mostly released as unwanted by-products in the cement and metal industry, while chlorinated pesticides are emitted by the organic chemical industry, or by wastewater treatment plants, which may collect ...
19 Nov 2013 - by GRID-Arendal
Dissolved Inorganic Nitrogen export by rivers for world regions
The figure shows the amounts of nitrogen exported by rivers per year and provides a forecast for the future.
16 Oct 2013 - by GRID-Arendal
Oil spills from 1970 to 2010
The most obvious potential source of serious pollution from ships is the discharge of oil (cargoes or bunkers) as a result of ship losses. However, there has been a dramatic reduction in the number of major oil spills ov...
16 Oct 2013 - by GRID-Arendal
Projected annual CO2 emissions from the shipping sector
In July 2011, international shipping became the first industrial sector to adopt binding international rules for the adoption of technical measures to reduce CO2 emissions. These technical measures were adopted by IMO as...
16 Oct 2013 - by GRID-Arendal
Seaborne oil trade and tanker spills
The ultimate goal of the shipping industry and its regulators is zero accidents and zero pollution. Although these goals have not yet been fully achieved, considerable progress has been made, especially in the context of...
16 Oct 2013 - by GRID-Arendal
Threats to the World's coral reefs
Major observed threats to the world's coral reefs include tourism, poison fishing, overexploitation, sedimentation, coral harvesting, dynamite fishing and pollution. This graphic explains which activities or conditions a...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Murre colonies and human activities
The thick-billed murre and common murre have ranges 1,000,000 km2 and number in the millions or tens of millions of breeding pairs. However global populations are declining, although increases have occurred in some regio...
13 Oct 2010 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Industrial areas and seasonal zones of oxygen depleted waters
This graphic illustrates the strong link between areas with high densities of industrial activity and zones of seasonally oxygen-depleted waters. There is a strong link between areas with high densities of industrial ac...
26 Jan 2009 - by Phillipe Rekacewicz, (Le Monde diplomatique) February 2008