Blessed dams or damned dams?
Article Abstract:
A dam crossing the Danube River, about 1,000 kms from the river's mouth at the Black Sea, was built in 1972. Since the Danube contributes about 70% of river inputs to the Black Sea, the effect of damming on the water and nutrient discharge from the Danube into the sea was examined. It was found that changes in silicate/fixed nitrogen ratios triggered by silicate retention behind the dam caused biogeochemical processes affecting the plankton community in the surface waters of the Black Sea. Other dams operating worldwide could affect the ecology of coastal sea waters in the same way.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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Over-water dispersal of lizards due to hurricanes
Article Abstract:
Over-water dispersal as a mechanism to explain the distribution of terrestrial animals in the Caribbean has been the subject of much debate. Evidence is now provided to support over-water dispersal as the method by which green iguanas colonized Anguilla. At least 15 green iguana appeared on the eastern beaches of Anguilla in 1995, having not previously occurred on the island. The 1995 hurricane season was above normal activities, and the iguanas appeared around one month after the first of the hurricanes, confirming that raft dispersal can occur successfully.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
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Dispersal of juveniles and variable recruitment in sessile marine species
Article Abstract:
Irregularities in coastal geography, such as bays and estuaries, produce regional variation in coastal transport of marine species. These variations determine the survival rate of larvae by depositing them in more or less favorable habitats. Nine years of settlement data for barnacles in Narragansett Bay, RI confirmed predictions made by the transport model.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1992
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