The bad outlook for coral reefs - CICERO
By Hans Martin Seip Coral reefs are the marine ecosystem with the greatest biodiversity. However, they are exposed to increased risk of injury due to both global benthic zone and local changes. Global changes include increased water temperature and acidity (CO 2 and water and carbonic acid). Local changes may include contaminants, such as from sewage spills, and overfishing. The authors classifies species based on the World Conservation Union's Red List of threatened species in which one operates with the following categories: LC = viable (least concern), NT = Near Threatened (Near Threatened), VU = vulnerable (vulnerable), EN = endangered (endangered) and CR = Critically Endangered (critical endangered). Of 704 species could be categorized was 297 (42%) category LC, 176 (25%) in the NT 201 (29%) of the VU 25 (4%) of EN and 5 in CR (1%). The proportion of threatened species (sum of VU, EN and CR) of 33% is greater than for most landdyrarter (amphibians are an exception). The authors also find that the proportion of threatened coral species have increased dramatically in recent decades. They underline the urgent need for action to conserve coral reefs. Reference KE Carpenter and colleagues. One-Third of Reef-Building Corals Face Elevated Extinction Risk from Climate Change and Local Impacts. benthic zone Science 321 (2008), 560-563.
CICERO Pb. 1129 Blindern, 0318 Oslo Office address: Gaustadalléen 21, 0349 OSLO Editor: Christian Bjørnæs Editor: Jorunn Gran Tel: 22 85 87 50 E-mail: post@cicero.oslo.no
By Hans Martin Seip Coral reefs are the marine ecosystem with the greatest biodiversity. However, they are exposed to increased risk of injury due to both global benthic zone and local changes. Global changes include increased water temperature and acidity (CO 2 and water and carbonic acid). Local changes may include contaminants, such as from sewage spills, and overfishing. The authors classifies species based on the World Conservation Union's Red List of threatened species in which one operates with the following categories: LC = viable (least concern), NT = Near Threatened (Near Threatened), VU = vulnerable (vulnerable), EN = endangered (endangered) and CR = Critically Endangered (critical endangered). Of 704 species could be categorized was 297 (42%) category LC, 176 (25%) in the NT 201 (29%) of the VU 25 (4%) of EN and 5 in CR (1%). The proportion of threatened species (sum of VU, EN and CR) of 33% is greater than for most landdyrarter (amphibians are an exception). The authors also find that the proportion of threatened coral species have increased dramatically in recent decades. They underline the urgent need for action to conserve coral reefs. Reference KE Carpenter and colleagues. One-Third of Reef-Building Corals Face Elevated Extinction Risk from Climate Change and Local Impacts. benthic zone Science 321 (2008), 560-563.
CICERO Pb. 1129 Blindern, 0318 Oslo Office address: Gaustadalléen 21, 0349 OSLO Editor: Christian Bjørnæs Editor: Jorunn Gran Tel: 22 85 87 50 E-mail: post@cicero.oslo.no
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