نتایج جستجو برای: coastal areas
تعداد نتایج: 445994 فیلتر نتایج به سال:
Coastal fisheries are an important. component of the fisheries sector and rural economy of tropical developing countries in Asia generating food, employment and foreign exchange. In 1994, marine landings of these countries were about 13.3 million t (roughly 16% of world marine landings), most originating from coastal areas. The coastal fishery resources consist dominantly of species with relati...
Globally threatened mangrove forest habitat is often considered an important buffer protecting coastlines from wave and storm impacts and coastal erosion. However, there is little empirical data quantifying the protective effects of mangroves during storms, primarily because of the difficulty of predicting where and when a storm will intersect the shoreline, to facilitate data collection before...
Coastal zones are important source regions for a variety of trace gases, including halocarbons and sulfurbearing species. While salt marshes, macroalgae and phytoplankton communities have been intensively studied, little is known about trace gas fluxes in seagrass meadows. Here we report results of a newly developed dynamic flux chamber system that can be deployed in intertidal areas over full ...
The impacts of ocean acidification on coastal biofilms are poorly understood. Carbon dioxide vent areas provide an opportunity to make predictions about the impacts of ocean acidification. We compared biofilms that colonised glass slides in areas exposed to ambient and elevated levels of pCO(2) along a coastal pH gradient, with biofilms grown at ambient and reduced light levels. Biofilm product...
The coastal areas of Bangladesh have a high cyclone frequency, and the protection from cyclone damage afforded by the natural mangrove forests of the Sundarbans, led the Forest Department in 1966 to initiate a mangrove afforestation program. These initial plantings proved highly successful in protecting and stabilizing coastal areas, and led to a largescale mangrove afforestation initiative. To...
—Laughing gulls (Larus atricilla) are commonly found in many areas of North America and little is known about their diet, particularly in coastal-urban interfaces where gull-aircraft collisions can be a serious concern. The objective of this study was to describe and quantify the consumption of terrestrial invertebrates by laughing gulls at a coastal-urban interface in the northeastern United S...
BACKGROUND Usefulness of anthropometric indices (AI) as predictors of CV risk is unclear and remains controversial. MATERIAL/METHODS To evaluate the correlation between AI and CV risk factors in the Croatian adult population and to observe possible differences between coastal and inland regions and urban and rural settlements. CRISIC-fm (ISRCTN31857696) is a prospective, randomized cohort stu...
Prehistoric environmental change in Hawai'i is evaluated through the analysis of sedi-ment and pollen samples from dated cores and excavation profiles in the coastal low-lands of O'ahu. It is suggested that a lowland Pritchardia palm forest and associatedspecies underwent rapid decline starting between about A.D. 1000 to 1200. This de-cline seems to have occurred earlier in coas...
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