Search Results - (Author, Cooperation:S. W. Pacala)
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1Latest Papers from Table of Contents or Articles in PressA. Chen ; S. Wang ; S. W. Pacala
American Association for the Advancement of Science (AAAS)
Published 2012Staff ViewPublication Date: 2012-06-30Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: *Biodiversity ; *Biological Evolution ; *Ecosystem ; *TreesPublished by: -
2Latest Papers from Table of Contents or Articles in PressJ. L. Osnas ; J. W. Lichstein ; P. B. Reich ; S. W. Pacala
American Association for the Advancement of Science (AAAS)
Published 2013Staff ViewPublication Date: 2013-03-30Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Carbon Dioxide/metabolism ; Light ; Organ Size ; Plant Leaves/*anatomy & histology/metabolism/radiation effects ; Species SpecificityPublished by: -
3Latest Papers from Table of Contents or Articles in PressC. E. Farrior ; S. A. Bohlman ; S. Hubbell ; S. W. Pacala
American Association for the Advancement of Science (AAAS)
Published 2016Staff ViewPublication Date: 2016-01-09Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Carbon/analysis ; *Forests ; Trees/*anatomy & histology/*growth & developmentPublished by: -
4Latest Papers from Table of Contents or Articles in PressY. Pan ; R. A. Birdsey ; J. Fang ; R. Houghton ; P. E. Kauppi ; W. A. Kurz ; O. L. Phillips ; A. Shvidenko ; S. L. Lewis ; J. G. Canadell ; P. Ciais ; R. B. Jackson ; S. W. Pacala ; A. D. McGuire ; S. Piao ; A. Rautiainen ; S. Sitch ; D. Hayes
American Association for the Advancement of Science (AAAS)
Published 2011Staff ViewPublication Date: 2011-07-19Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Atmosphere ; Biomass ; Carbon/analysis ; Carbon Dioxide/analysis ; *Carbon Sequestration ; Climate Change ; Conservation of Natural Resources ; *Ecosystem ; *Trees ; Tropical ClimatePublished by: -
5Latest Papers from Table of Contents or Articles in PressAlvarez, R. A., Zavala-Araiza, D., Lyon, D. R., Allen, D. T., Barkley, Z. R., Brandt, A. R., Davis, K. J., Herndon, S. C., Jacob, D. J., Karion, A., Kort, E. A., Lamb, B. K., Lauvaux, T., Maasakkers, J. D., Marchese, A. J., Omara, M., Pacala, S. W., Peischl, J., Robinson, A. L., Shepson, P. B., Sweeney, C., Townsend-Small, A., Wofsy, S. C., Hamburg, S. P.
American Association for the Advancement of Science (AAAS)
Published 2018Staff ViewPublication Date: 2018-07-13Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyGeosciencesComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Geochemistry, GeophysicsPublished by: -
6Articles: DFG German National LicensesHouse, J. I. ; Hibbard, K. A. ; Bousquet, P. ; Ciais, P. ; Peylin, P. ; Braswell, B. H. ; Apps, M. J. ; Baker, D. ; Bondeau, A. ; Canadell, J. ; Churkina, G. ; Cramer, W. ; Denning, A. S. ; Field, C. B. ; Friedlingstein, P. ; Goodale, C. ; Heimann, M. ; Houghton, R. A. ; Melillo, J. M. ; Moore, B. ; Murdiyarso, D. ; Noble, I. ; Pacala, S. W. ; Prentice, I. C. ; Raupach, M. R.
[s.l.] : Macmillian Magazines Ltd.
Published 2001Staff ViewISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] Knowledge of carbon exchange between the atmosphere, land and the oceans is important, given that the terrestrial and marine environments are currently absorbing about half of the carbon dioxide that is emitted by fossil-fuel combustion. This carbon uptake is therefore limiting the extent of ...Type of Medium: Electronic ResourceURL: -
7Articles: DFG German National LicensesStaff View
ISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsType of Medium: Electronic ResourceURL: -
8Articles: DFG German National LicensesStaff View
ISSN: 1432-1939Keywords: Clonal growth models ; Clonal plants ; Stochastic simulation models ; Rhizomes ; Solidago altissimaSource: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Summary As clonal plants grow they move through space. The movement patterns that result can be complex and difficult to interpret without the aid of models. We developed a stochastic simulation model of clonal growth in the tall goldenrod, Solidago altissima. Our model was calibrated with field data on the clonal expansion of both seedlings and established clones, and model assumptions were verified by statistical analyses. When simulations were based on empirical distributions with long rhizome lengths, there was greater dispersal, less leaf overlap, and less spatial aggregation than when simulations were based on distributions with comparatively short rhizome lengths. For the field data that we utilized, variation in rhizome lengths had a greater effect than variation for either branching angles or “rhizome initiation points” (see text). We also found that observed patterns of clonal growth in S. altissima did not cause the formation of “fairy rings”. However, simulations with an artificial distribution of branching angles demonstrate that “fairy rings” can result solely from a plant's clonal morphology. Stochastic simulation models that incorporated variation in rhizome lengths, branching angles, and rhizome initiation points produced greater dispersal and less leaf overlap than deterministic models. Thus, variation for clonal growth parameters may increase the efficiency of substrate exploration by increasing the area covered and by decreasing the potential for intraclonal competition. We also demonstrated that ramet displacements were slightly, but consistently lower in stochastic simulation models than in random-walk models. This difference was due to the incorporation of details on rhizome bud initiation into stochastic simulation models, but not random-walk models. We discuss the advantages and disadvantages of deterministic, stochastic simulation, and random-walk models of clonal growth.Type of Medium: Electronic ResourceURL: -
9Articles: DFG German National LicensesStaff View
ISSN: 1432-1939Keywords: Anolis ; Lizards ; Parasites ; IslandsSource: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Summary The communities of parasitic helminths from ten species of lizards on seven islands in the Caribbean were examined to ascertain the relative importance of predictable deterministic factors and unpredicatable colonization or extinction events in determining the structure of the parasite community. A simple graphical model of community structure is used as a “null model” to describe the features of a community that are dependent only upon the size of the host population and features of the life histories of the constituent parasite species. This model predicts that parasite species will exhibit a nested pattern of local and global relative abundance. The observed data correspond fairly well to this pattern. The absences of individual parasite species from communities where they might be expected to be present emphasizes the role of stochastic colonization and extinction events in delineating the constituent members of the community on any island. Statistical analysis of the distribution of parasite species per host illustrates that this pattern is random in habitats where parasite species diversity is low, but decreasingly variable in habitats where more diverse parasite communities occur. Increased parasite diversity also leads to an increase in the proportion of hosts that contain mixed species infections. Comparisons of worm burdens from single and mixed species infections within individual hosts suggest that interactions between parasite species only rarely leads to reduced worm burdens.Type of Medium: Electronic ResourceURL: