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  • *Ecosystem  (222)
  • American Association for the Advancement of Science (AAAS)  (222)
  • Nature Publishing Group
  • 2005-2009  (222)
  • 2007  (107)
  • 2005  (115)
Collection
Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (222)
  • Nature Publishing Group
Years
  • 2005-2009  (222)
Year
  • 1
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    Environment. Building a "green" railway in China (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-04-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Peng, Changhui -- Ouyang, Hua -- Gao, Qiong -- Jiang, Yuan -- Zhang, Feng -- Li, Jun -- Yu, Qiang -- New York, N.Y. -- Science. 2007 Apr 27;316(5824):546-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut des Sciences de L'Environnement, Departement des Sciences Biologiques, Universite du Quebec a Montreal, Montreal, QC, Canada, H3C 3P8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17463272" target="_blank"〉PubMed〈/a〉
    Keywords: Animal Migration ; Animals ; China ; *Conservation of Natural Resources/legislation & jurisprudence ; *Ecosystem ; *Environment ; Fresh Water ; Plants ; *Railroads ; Refuse Disposal ; Temperature ; Travel
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Quantitative phylogenetic assessment of microbial communities in diverse environments (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-02-03
    Description: The taxonomic composition of environmental communities is an important indicator of their ecology and function. We used a set of protein-coding marker genes, extracted from large-scale environmental shotgun sequencing data, to provide a more direct, quantitative, and accurate picture of community composition than that provided by traditional ribosomal RNA-based approaches depending on the polymerase chain reaction. Mapping marker genes from four diverse environmental data sets onto a reference species phylogeny shows that certain communities evolve faster than others. The method also enables determination of preferred habitats for entire microbial clades and provides evidence that such habitat preferences are often remarkably stable over time.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉von Mering, C -- Hugenholtz, P -- Raes, J -- Tringe, S G -- Doerks, T -- Jensen, L J -- Ward, N -- Bork, P -- New York, N.Y. -- Science. 2007 Feb 23;315(5815):1126-30. Epub 2007 Feb 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉European Molecular Biology Laboratory, Meyerhofstrasse 1, 69117 Heidelberg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17272687" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacteria/*classification/genetics ; Biological Evolution ; Bone and Bones/microbiology ; *Ecosystem ; *Environmental Microbiology ; Genes, Bacterial ; Genes, rRNA ; Genetic Markers ; *Genomics ; Likelihood Functions ; Mining ; *Phylogeny ; Seawater/microbiology ; Soil Microbiology ; Water Microbiology ; Whales/microbiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
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    Microbial population structures in the deep marine biosphere (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-10-06
    Description: The analytical power of environmental DNA sequences for modeling microbial ecosystems depends on accurate assessments of population structure, including diversity (richness) and relative abundance (evenness). We investigated both aspects of population structure for microbial communities at two neighboring hydrothermal vents by examining the sequences of more than 900,000 microbial small-subunit ribosomal RNA amplicons. The two vent communities have different population structures that reflect local geochemical regimes. Descriptions of archaeal diversity were nearly exhaustive, but despite collecting an unparalleled number of sequences, statistical analyses indicated additional bacterial diversity at every taxonomic level. We predict that hundreds of thousands of sequences will be necessary to capture the vast diversity of microbial communities, and that different patterns of evenness for both high- and low-abundance taxa may be important in defining microbial ecosystem dynamics.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Huber, Julie A -- Mark Welch, David B -- Morrison, Hilary G -- Huse, Susan M -- Neal, Phillip R -- Butterfield, David A -- Sogin, Mitchell L -- New York, N.Y. -- Science. 2007 Oct 5;318(5847):97-100.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Josephine Bay Paul Center, Marine Biological Laboratory, 7 MBL Street, Woods Hole, MA 02543, USA. jhuber@mbl.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17916733" target="_blank"〉PubMed〈/a〉
    Keywords: *Archaea/classification/genetics ; *Bacteria/classification/genetics ; *Biodiversity ; DNA, Archaeal/analysis ; DNA, Bacterial/analysis ; DNA, Ribosomal/analysis ; *Ecosystem ; Epsilonproteobacteria/classification/genetics ; Geologic Sediments/microbiology ; Pacific Ocean ; Polymerase Chain Reaction ; RNA, Ribosomal ; Seawater/*microbiology ; Sequence Analysis, DNA
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    Ecology. Tackling ecological complexity in climate impact research (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-02-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Walther, Gian-Reto -- New York, N.Y. -- Science. 2007 Feb 2;315(5812):606-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Plant Ecology, University of Bayreuth, 95440 Bayreuth, Germany. gian-reto.walther@uni-bayreuth.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17272708" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biodiversity ; California ; *Climate ; *Ecosystem ; *Invertebrates/physiology ; *Plant Development ; Poaceae/growth & development ; Population Dynamics ; Rain ; Research Design ; Seasons ; Time Factors
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 5
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    Evolutionary ecology. Variable evolution (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-05-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, Elizabeth -- New York, N.Y. -- Science. 2007 May 4;316(5825):686-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17478697" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Biological ; Animals ; Biodiversity ; *Biological Evolution ; *Ecosystem ; Gene Flow ; Geography ; Plants
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 6
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    Global-scale similarities in nitrogen release patterns during long-term decomposition (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-01-20
    Description: Litter decomposition provides the primary source of mineral nitrogen (N) for biological activity in most terrestrial ecosystems. A 10-year decomposition experiment in 21 sites from seven biomes found that net N release from leaf litter is dominantly driven by the initial tissue N concentration and mass remaining regardless of climate, edaphic conditions, or biota. Arid grasslands exposed to high ultraviolet radiation were an exception, where net N release was insensitive to initial N. Roots released N linearly with decomposition and exhibited little net N immobilization. We suggest that fundamental constraints on decomposer physiologies lead to predictable global-scale patterns in net N release during decomposition.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Parton, William -- Silver, Whendee L -- Burke, Ingrid C -- Grassens, Leo -- Harmon, Mark E -- Currie, William S -- King, Jennifer Y -- Adair, E Carol -- Brandt, Leslie A -- Hart, Stephen C -- Fasth, Becky -- New York, N.Y. -- Science. 2007 Jan 19;315(5810):361-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Natural Resource Ecology Laboratory, Colorado State University, 200 West Lake, Campus Mail 1499, Fort Collins, CO 80523-1499, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17234944" target="_blank"〉PubMed〈/a〉
    Keywords: *Biodegradation, Environmental ; Carbon/metabolism ; Climate ; *Ecosystem ; Humidity ; Mathematics ; Nitrogen/*metabolism ; Plant Leaves/metabolism ; Plant Roots/metabolism ; Plants/*metabolism ; Poaceae ; Regression Analysis ; Seasons ; Soil Microbiology ; Temperature ; Time Factors ; Trees
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    Stability and diversity of ecosystems (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-07-07
    Description: Understanding the relationship between diversity and stability requires a knowledge of how species interact with each other and how each is affected by the environment. The relationship is also complex, because the concept of stability is multifaceted; different types of stability describing different properties of ecosystems lead to multiple diversity-stability relationships. A growing number of empirical studies demonstrate positive diversity-stability relationships. These studies, however, have emphasized only a few types of stability, and they rarely uncover the mechanisms responsible for stability. Because anthropogenic changes often affect stability and diversity simultaneously, diversity-stability relationships cannot be understood outside the context of the environmental drivers affecting both. This shifts attention away from diversity-stability relationships toward the multiple factors, including diversity, that dictate the stability of ecosystems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ives, Anthony R -- Carpenter, Stephen R -- New York, N.Y. -- Science. 2007 Jul 6;317(5834):58-62.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Zoology, University of Wisconsin, Madison, WI 53706, USA. arives@wisc.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17615333" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biodiversity ; *Ecosystem ; Environment ; Extinction, Biological ; Models, Biological ; Population Dynamics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
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    Astrobiology. Robot seeks new life--and new funding--in the abyss of Zacaton (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-01-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Krajick, Kevin -- New York, N.Y. -- Science. 2007 Jan 19;315(5810):322-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17234927" target="_blank"〉PubMed〈/a〉
    Keywords: Archaea ; Bacteria ; Budgets ; *Ecosystem ; *Exobiology ; Hot Springs/*microbiology ; Jupiter ; Mexico ; Robotics/economics/*instrumentation ; Software ; United States ; United States National Aeronautics and Space Administration/economics ; *Water Microbiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    Microbiology. A proteomic snapshot of life at a vent (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-01-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fisher, Charles R -- Girguis, Peter -- New York, N.Y. -- Science. 2007 Jan 12;315(5809):198-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Pennsylvania State University, University Park, PA 16801, USA. cfisher@psu.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17218516" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacterial Proteins/analysis/*metabolism ; Carbon/metabolism ; Carbon Isotopes/analysis ; Chemoautotrophic Growth ; Citric Acid Cycle ; *Ecosystem ; Gammaproteobacteria/*metabolism ; Metabolic Networks and Pathways ; Oxidation-Reduction ; Pacific Ocean ; Polychaeta/*microbiology/*physiology ; Proteome ; *Proteomics ; Reproduction ; Sulfides/metabolism ; *Symbiosis ; Temperature
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    Habitat split and the global decline of amphibians (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-12-15
    Description: The worldwide decline in amphibians has been attributed to several causes, especially habitat loss and disease. We identified a further factor, namely "habitat split"-defined as human-induced disconnection between habitats used by different life history stages of a species-which forces forest-associated amphibians with aquatic larvae to make risky breeding migrations between suitable aquatic and terrestrial habitats. In the Brazilian Atlantic Forest, we found that habitat split negatively affects the richness of species with aquatic larvae but not the richness of species with terrestrial development (the latter can complete their life cycle inside forest remnants). This mechanism helps to explain why species with aquatic larvae have the highest incidence of population decline. These findings reinforce the need for the conservation and restoration of riparian vegetation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Becker, Carlos Guilherme -- Fonseca, Carlos Roberto -- Haddad, Celio Fernando Baptista -- Batista, Romulo Fernandes -- Prado, Paulo Inacio -- New York, N.Y. -- Science. 2007 Dec 14;318(5857):1775-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departamento de Zoologia, Universidade Estadual de Campinas, 13083-970 Campinas SP, Brazil.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18079402" target="_blank"〉PubMed〈/a〉
    Keywords: *Amphibians/growth & development/physiology ; Animal Migration ; Animals ; *Biodiversity ; Brazil ; Conservation of Natural Resources ; *Ecosystem ; Larva/physiology ; Population Dynamics ; Trees ; Water
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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