نتایج جستجو برای: natural ecosystems
تعداد نتایج: 518661 فیلتر نتایج به سال:
Microorganisms are the pillars of life on Earth. Over billions of years, they have evolved into every conceivable niche on the planet. Microbes reshaped the oceans and atmosphere and gave rise to conditions conducive to multicellular organisms. Only in the past decade have we started to peer deeply into the microbial cosmos, and what we have found is amazing. Microbial ecosystems behave, in man...
Restoration of many forest ecosystems will require replanting of native species. Choosing the proper seed source is essential to ensure long-term success of restoration plantings, especially if local seed sources are unavailable or genetically degraded. A successful restoration requires seed sources that are adapted to the climate and site, and are genetically diverse to allow subsequent reprod...
R.G. Van Driesche *, R.I. Carruthers , T. Center , M.S. Hoddle , J. Hough-Goldstein , L. Morin , L. Smith , D.L. Wagner , B. Blossey , V. Brancatini , R. Casagrande , C.E. Causton , J.A. Coetzee , J. Cuda, J. Ding , S.V. Fowler , J.H. Frank, R. Fuester , J. Goolsby , M. Grodowitz , T.A. Heard , M.P. Hill , J.H. Hoffmann , J. Huber , M. Julien , M.T.K. Kairo , M. Kenis , P. Mason, J. Medal, R. M...
Economic considerations typically have led societies to develop rather than to preserve wild and natural places. Accordingly, preservationists traditionally have based arguments for protecting nature on its intrinsic rather than instrumental worth. These traditional arguments rest on aesthetic, moral, and spiritual rather than on economic values. Today, though, many environmentalists point to t...
The goal of this project is to describe and understand the organismal composition, structure, and physiology of microbial ecosystems from hypersaline environments. One collection of such ecosystems occurs at North America's largest saltworks, the Exportadora de Sal, in Guerrero Negro, Baja California Sur. There, seawater flows through a series of evaporative basins with an increase in salinity ...
Artificial selection has been practiced for centuries to shape the properties of individual organisms, providing Darwin with a powerful argument for his theory of natural selection. We show that the properties of whole ecosystems can also be shaped by artificial selection procedures. Ecosystems initiated in the laboratory vary phenotypically and a proportion of the variation is heritable, despi...
Ecology has a key role in our understanding of the benefits that humans obtain from ecosystems (i.e. ecosystem services). Ecology can also contribute to developing environmentally sound technologies, markets for ecosystem services and approaches to decision-making that account for the changing relationship between humans and ecosystems. These contributions involve basic ecological research on, ...
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