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261.
Mary Bergen Don Cadien Ann Dalkey David E. Montagne Robert W. Smith Janet K. Stull Ronald G. Velarde Stephen B. Weisberg 《Environmental monitoring and assessment》2000,64(1):421-434
Benthic infauna were sampled from 251 Southern California Bight (SCB) mainland shelf sites in the summer of 1994. Sample sites were selected using a stratified random design, with the primary strata being depth zone, geography, and proximity to point and non-point discharges. Benthic infaunal condition was assessed using the Benthic Response Index (BRI), and by comparing dominant taxa and community parameters (e.g., number of taxa) among strata. Ninety-one percent of sediments in the SCB were found to contain healthy benthic communities. Most stations with altered benthos were located near river mouths, in Santa Monica Bay, or on the Palos Verdes Shelf. Deviations at sites with altered benthic communities were mostly limited to minor changes in species composition, rather than to large declines in diversity or abundance. 相似文献
262.
Ammonia in the environment: from ancient times to the present 总被引:3,自引:0,他引:3
Sutton MA Erisman JW Dentener F Möller D 《Environmental pollution (Barking, Essex : 1987)》2008,156(3):583-604
Recent research on atmospheric ammonia has made good progress in quantifying sources/sinks and environmental impacts. This paper reviews the achievements and places them in their historical context. It considers the role of ammonia in the development of agricultural science and air chemistry, showing how these arose out of foundations in 18th century chemistry and medieval alchemy, and then identifies the original environmental sources from which the ancients obtained ammonia. Ammonia is revealed as a compound of key human interest through the centuries, with a central role played by sal ammoniac in alchemy and the emergence of modern science. The review highlights how recent environmental research has emphasized volatilization sources of ammonia. Conversely, the historical records emphasize the role of high-temperature sources, including dung burning, coal burning, naturally burning coal seams and volcanoes. Present estimates of ammonia emissions from these sources are based on few measurements, which should be a future priority. 相似文献
263.
Senavirathna Mudalige Don Hiranya Jayasanka Zhaozhi Liu Fujino Takeshi 《Environmental science and pollution research international》2022,29(23):34475-34485
Environmental Science and Pollution Research - Microplastics are one of the most widely discussed environmental issues worldwide. Several studies have shown the effect of microplastic exposure on... 相似文献