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  • 1
    Publikationsdatum: 2019
    Beschreibung: 〈p〉We assess scientific evidence that has emerged since the U.S. Environmental Protection Agency’s 2009 Endangerment Finding for six well-mixed greenhouse gases and find that this new evidence lends increased support to the conclusion that these gases pose a danger to public health and welfare. Newly available evidence about a wide range of observed and projected impacts strengthens the association between the risk of some of these impacts and anthropogenic climate change, indicates that some impacts or combinations of impacts have the potential to be more severe than previously understood, and identifies substantial risk of additional impacts through processes and pathways not considered in the Endangerment Finding.〈/p〉
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 1999-04-09
    Beschreibung: In a seminal paper, Garrett Hardin argued in 1968 that users of a commons are caught in an inevitable process that leads to the destruction of the resources on which they depend. This article discusses new insights about such problems and the conditions most likely to favor sustainable uses of common-pool resources. Some of the most difficult challenges concern the management of large-scale resources that depend on international cooperation, such as fresh water in international basins or large marine ecosystems. Institutional diversity may be as important as biological diversity for our long-term survival.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ostrom, E -- Burger, J -- Field, C B -- Norgaard, R B -- Policansky, D -- ESO 5022/ES/NIEHS NIH HHS/ -- New York, N.Y. -- Science. 1999 Apr 9;284(5412):278-82.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for the Study of Institutions, Population, and Environmental Change and Workshop in Political Theory and Policy Analysis, Indiana University, Bloomington, IN 47408, USA. ostrom@indiana.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10195886" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Conservation of Natural Resources ; *Ecosystem ; Government ; Ownership ; Private Sector ; Privatization ; *Public Policy ; Public Sector ; Social Responsibility
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 2001-12-26
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Field, C B -- New York, N.Y. -- Science. 2001 Dec 21;294(5551):2490-1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Carnegie Institution of Washington, Stanford, CA 94305, USA. chris@globalecology.stanford.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11752562" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Agriculture ; Atmosphere ; Climate ; Conservation of Natural Resources ; *Ecosystem ; Food ; Food Chain ; Forestry ; *Human Activities ; Humans ; Plant Development ; *Plants ; Statistics as Topic
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
    Publikationsdatum: 2002-12-10
    Beschreibung: Simulated global changes, including warming, increased precipitation, and nitrogen deposition, alone and in concert, increased net primary production (NPP) in the third year of ecosystem-scale manipulations in a California annual grassland. Elevated carbon dioxide also increased NPP, but only as a single-factor treatment. Across all multifactor manipulations, elevated carbon dioxide suppressed root allocation, decreasing the positive effects of increased temperature, precipitation, and nitrogen deposition on NPP. The NPP responses to interacting global changes differed greatly from simple combinations of single-factor responses. These findings indicate the importance of a multifactor experimental approach to understanding ecosystem responses to global change.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shaw, M Rebecca -- Zavaleta, Erika S -- Chiariello, Nona R -- Cleland, Elsa E -- Mooney, Harold A -- Field, Christopher B -- New York, N.Y. -- Science. 2002 Dec 6;298(5600):1987-90.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Global Ecology, Carnegie Institution of Washington, 260 Panama Street, Stanford, CA 94305, USA. shaw@globalecology.stanford.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12471257" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Atmosphere ; Biomass ; California ; *Carbon Dioxide ; Climate ; *Ecosystem ; Environment ; Geraniaceae/*growth & development ; Poaceae/*growth & development ; Soil ; Temperature ; Weather
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
    Publikationsdatum: 2001-06-26
    Beschreibung: For the period 1980-89, we estimate a carbon sink in the coterminous United States between 0.30 and 0.58 petagrams of carbon per year (petagrams of carbon = 10(15) grams of carbon). The net carbon flux from the atmosphere to the land was higher, 0.37 to 0.71 petagrams of carbon per year, because a net flux of 0.07 to 0.13 petagrams of carbon per year was exported by rivers and commerce and returned to the atmosphere elsewhere. These land-based estimates are larger than those from previous studies (0.08 to 0.35 petagrams of carbon per year) because of the inclusion of additional processes and revised estimates of some component fluxes. Although component estimates are uncertain, about one-half of the total is outside the forest sector. We also estimated the sink using atmospheric models and the atmospheric concentration of carbon dioxide (the tracer-transport inversion method). The range of results from the atmosphere-based inversions contains the land-based estimates. Atmosphere- and land-based estimates are thus consistent, within the large ranges of uncertainty for both methods. Atmosphere-based results for 1980-89 are similar to those for 1985-89 and 1990-94, indicating a relatively stable U.S. sink throughout the period.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pacala, S W -- Hurtt, G C -- Baker, D -- Peylin, P -- Houghton, R A -- Birdsey, R A -- Heath, L -- Sundquist, E T -- Stallard, R F -- Ciais, P -- Moorcroft, P -- Caspersen, J P -- Shevliakova, E -- Moore, B -- Kohlmaier, G -- Holland, E -- Gloor, M -- Harmon, M E -- Fan, S M -- Sarmiento, J L -- Goodale, C L -- Schimel, D -- Field, C B -- New York, N.Y. -- Science. 2001 Jun 22;292(5525):2316-20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Ecology and Evolutionary Biology, Atmospheric and Oceanic Sciences Program, Princeton University, Princeton, NJ 08544, USA. Pacala@princeton.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11423659" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Agriculture ; *Atmosphere ; *Carbon/metabolism ; Carbon Dioxide ; Conservation of Natural Resources ; Ecosystem ; Fires ; Forestry ; Soil ; Time Factors ; *Trees/metabolism ; United States ; Wood
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
    Publikationsdatum: 2001-04-03
    Beschreibung: The Sea-viewing Wide Field-of-view Sensor (SeaWiFS) provides global monthly measurements of both oceanic phytoplankton chlorophyll biomass and light harvesting by land plants. These measurements allowed the comparison of simultaneous ocean and land net primary production (NPP) responses to a major El Nino to La Nina transition. Between September 1997 and August 2000, biospheric NPP varied by 6 petagrams of carbon per year (from 111 to 117 petagrams of carbon per year). Increases in ocean NPP were pronounced in tropical regions where El Nino-Southern Oscillation (ENSO) impacts on upwelling and nutrient availability were greatest. Globally, land NPP did not exhibit a clear ENSO response, although regional changes were substantial.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Behrenfeld, M J -- Randerson, J T -- McClain, C R -- Feldman, G C -- Los, S O -- Tucker, C J -- Falkowski, P G -- Field, C B -- Frouin, R -- Esaias, W E -- Kolber, D D -- Pollack, N H -- New York, N.Y. -- Science. 2001 Mar 30;291(5513):2594-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Aeronautic and Space Administration, Goddard Space Flight Center, Greenbelt, MD 20771, USA. mjb@neptune.gsfc.nasa.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11283369" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Biomass ; Chlorophyll/*analysis ; *Climate ; Light ; Oceans and Seas ; *Photosynthesis ; Phytoplankton/growth & development/*metabolism ; Plant Development ; Plants/*metabolism ; Seasons ; Seawater ; Spacecraft
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 7
    Publikationsdatum: 1997-01-24
    Beschreibung: Atmospheric general circulation models used for climate simulation and weather forecasting require the fluxes of radiation, heat, water vapor, and momentum across the land-atmosphere interface to be specified. These fluxes are calculated by submodels called land surface parameterizations. Over the last 20 years, these parameterizations have evolved from simple, unrealistic schemes into credible representations of the global soil-vegetation-atmosphere transfer system as advances in plant physiological and hydrological research, advances in satellite data interpretation, and the results of large-scale field experiments have been exploited. Some modern schemes incorporate biogeochemical and ecological knowledge and, when coupled with advanced climate and ocean models, will be capable of modeling the biological and physical responses of the Earth system to global change, for example, increasing atmospheric carbon dioxide.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sellers -- Dickinson -- Randall -- Betts -- Hall -- Berry -- Collatz -- Denning -- Mooney -- Nobre -- Sato -- Field -- Henderson-Sellers -- New York, N.Y. -- Science. 1997 Jan 24;275(5299):502-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉P. J. Sellers is at the NASA Johnson Space Center, Mail Code CB, Houston, TX 77058, USA. R. E. Dickinson is in the Department of Atmospheric Sciences, University of Arizona, Tucson, AZ 85721, USA. D. A. Randall is in the Atmospheric Sciences Department, Colorado State University, Fort Collins, CO 80523, USA. A. K. Betts is at Atmospheric Research, Rural Route 3, Box 3125, Pittsford, VT 05763, USA. F. G. Hall and G. J. Collatz are at NASA Goddard Space Flight Center, Code 923, Greenbelt, MD 20771, USA. J. A. Berry and C. B. Field are in the Department of Plant Biology, Carnegie Institution, Stanford, CA 94305, USA. A. S. Denning is in the School of Environmental Science and Management, University of California, Santa Barbara, CA 93106-5131, USA. H. A. Mooney is in the Department of Biological Sciences, Stanford University, Stanford, CA 94305, USA. C. A. Nobre is at INPE/CPTEC, Caixa Postal 01, cep 12630-000, Cachoeira Paulista, SP, Brazil. N. Sato is in the Numerical Prediction Division, Japan Meteorology Agency, 1-3-4, Ootemachi, Chiyoda-ku, Tokyo, Japan 100. A. Henderson-Sellers is at the Royal Melbourne Institute of Technology, Plenty Road, Post Office Box 71, Bundoora, VIC 3083, Australia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8999789" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 8
    Publikationsdatum: 2009-05-09
    Beschreibung: The quantity of land available to grow biofuel crops without affecting food prices or greenhouse gas (GHG) emissions from land conversion is limited. Therefore, bioenergy should maximize land-use efficiency when addressing transportation and climate change goals. Biomass could power either internal combustion or electric vehicles, but the relative land-use efficiency of these two energy pathways is not well quantified. Here, we show that bioelectricity outperforms ethanol across a range of feedstocks, conversion technologies, and vehicle classes. Bioelectricity produces an average of 81% more transportation kilometers and 108% more emissions offsets per unit area of cropland than does cellulosic ethanol. These results suggest that alternative bioenergy pathways have large differences in how efficiently they use the available land to achieve transportation and climate goals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Campbell, J E -- Lobell, D B -- Field, C B -- New York, N.Y. -- Science. 2009 May 22;324(5930):1055-7. doi: 10.1126/science.1168885. Epub 2009 May 7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉College of Engineering, University of California, Merced, CA 95344, USA. ecampbell3@ucmerced.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19423776" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Agriculture ; Air Pollutants ; Automobile Driving ; *Bioelectric Energy Sources ; *Biomass ; *Energy-Generating Resources ; *Ethanol ; Greenhouse Effect ; *Motor Vehicles ; Zea mays
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 9
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 2003-12-04
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hungate, Bruce A -- Dukes, Jeffrey S -- Shaw, M Rebecca -- Luo, Yiqi -- Field, Christopher B -- New York, N.Y. -- Science. 2003 Nov 28;302(5650):1512-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Sciences and the Merriam-Powell Center for Environmental Research, Northern Arizona University, Flagstaff, AZ 86011, USA. bruce.hungate@nau.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14645831" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Atmosphere ; Carbon/analysis/metabolism ; Carbon Dioxide ; *Climate ; *Ecosystem ; Models, Theoretical ; Nitrogen/*analysis/metabolism ; Nitrogen Fixation ; Plants/metabolism ; Soil/analysis ; Trees/chemistry/metabolism
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 10
    Publikationsdatum: 1998-07-10
    Beschreibung: Integrating conceptually similar models of the growth of marine and terrestrial primary producers yielded an estimated global net primary production (NPP) of 104.9 petagrams of carbon per year, with roughly equal contributions from land and oceans. Approaches based on satellite indices of absorbed solar radiation indicate marked heterogeneity in NPP for both land and oceans, reflecting the influence of physical and ecological processes. The spatial and temporal distributions of ocean NPP are consistent with primary limitation by light, nutrients, and temperature. On land, water limitation imposes additional constraints. On land and ocean, progressive changes in NPP can result in altered carbon storage, although contrasts in mechanisms of carbon storage and rates of organic matter turnover result in a range of relations between carbon storage and changes in NPP.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Field -- Behrenfeld -- Randerson -- Falkowski -- New York, N.Y. -- Science. 1998 Jul 10;281(5374):237-40.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉C. B. Field, Department of Plant Biology, Carnegie Institution of Washington, Stanford, CA 94305, USA. M. J. Behrenfeld and P. Falkowski, Institute of Marine and Coastal Sciences, Rutgers University, New Brunswick, NJ 08901-8521, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9657713" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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