نتایج جستجو برای: coastal ecosystem
تعداد نتایج: 132086 فیلتر نتایج به سال:
Located around the coastal margins of the Atlantic, Pacific and Indian Oceans are 64 Large Marine Ecosystems (LMEs). Within the boundaries of the LMEs, 95% of the world’s marine fisheries biomass is produced, ocean pollution is most severe, and coastal habitats are most seriously degraded. The LMEs are also important economic areas of the world, producing goods and services valued at $10.6 tril...
Scientists have documented the general decline in the health of marine ecosystems. The human impacts on marine ecosystems are forcing resource agencies and scientists to rethink how society manages ocean and coastal systems. Since the 1960s, the scientific and intellectual basis of an ecosystem-based approach to manage and restore landscapes has been developing with state and federal resource a...
362 Diversity and Distributions , 11 , 361–366, © 2005 Blackwell Publishing Ltd and temporal bounds, the authors endeavour assiduously to bring order to their treatment and presentation. They enlist the help of others as well. Aside from numerous tables and figures, the book is embedded with 21 boxes written by 25 different authors, on subjects ranging from the effects of noise pollution on dol...
The human aspects of conservation are often overlooked but will be critical for identifying strategies for biological conservation in the face of climate change. We surveyed the behavioral intentions of coastal landowners with respect to various conservation strategies aimed at facilitating ecosystem migration for tidal marshes. We found that several popular strategies, including conservation e...
Some land and ocean processes are related through connections (and synoptic-scale teleconnections) to the atmosphere. Synoptic-scale atmospheric (El Niño/Southern Oscillation [ENSO], Pacific Decadal Oscillation [PDO], and North Atlantic Oscillation [NAO]) decadal cycles are known to influence the global terrestrial carbon cycle. Potentially, smaller scale land-ocean connections influenced by co...
Stratospheric ozone depletion and the concomitant increase in irradiance of ultraviolet-B radiation (UVB) at the earth’s surface represent major threats to terrestrial and aquatic ecosystems. In costal rocky shore environments, seaweeds constitute a group of organisms of particular significance to ecosystem function. Thus, impairment of seaweed performance by UVB-exposure may result in severe c...
Recent attention has focused on the high rates of annual carbon sequestration in vegetated coastal ecosystems--marshes, mangroves, and seagrasses--that may be lost with habitat destruction ('conversion'). Relatively unappreciated, however, is that conversion of these coastal ecosystems also impacts very large pools of previously-sequestered carbon. Residing mostly in sediments, this 'blue carbo...
The Chesapeake Bay has been an important test bed for large-scale coastal ecosystem restoration and management. Science has played a key role but faces major new challenges as there is a need to make more reliable predictions of future conditions in the face of continued human development in the region. Reconstruction of a modern environmental history of the bay provides a useful prologue for p...
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