13 research outputs found

    Patterns of Spatial Variation of Assemblages Associated with Intertidal Rocky Shores: A Global Perspective

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    Assemblages associated with intertidal rocky shores were examined for large scale distribution patterns with specific emphasis on identifying latitudinal trends of species richness and taxonomic distinctiveness. Seventy-two sites distributed around the globe were evaluated following the standardized sampling protocol of the Census of Marine Life NaGISA project (www.nagisa.coml.org). There were no clear patterns of standardized estimators of species richness along latitudinal gradients or among Large Marine Ecosystems (LMEs); however, a strong latitudinal gradient in taxonomic composition (i.e., proportion of different taxonomic groups in a given sample) was observed. Environmental variables related to natural influences were strongly related to the distribution patterns of the assemblages on the LME scale, particularly photoperiod, sea surface temperature (SST) and rainfall. In contrast, no environmental variables directly associated with human influences (with the exception of the inorganic pollution index) were related to assemblage patterns among LMEs. Correlations of the natural assemblages with either latitudinal gradients or environmental variables were equally strong suggesting that neither neutral models nor models based solely on environmental variables sufficiently explain spatial variation of these assemblages at a global scale. Despite the data shortcomings in this study (e.g., unbalanced sample distribution), we show the importance of generating biological global databases for the use in large-scale diversity comparisons of rocky intertidal assemblages to stimulate continued sampling and analyses

    Scholarly Practice, Participatory Design and the eXtensible Catalog

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    Color plates for Chapter V and an announcement about the publication of a new book: Scholarly Practice, Participatory Design and the eXtensible Catalog.As part of the development of eXtensible Catalog (XC), a project sponsored by the University of Rochester’s River Campus Libraries, four institutions conducted eighty interviews and numerous workshops to understand how researchers learn about, acquire, and use scholarly resources. Research findings informed the design and development of XC, a set of open-source applications that provides access to resources across a range of databases, metadata schemas, and standards. In this volume, members of the project team report on key findings of the user research that was done at Cornell University, Ohio State University, the University of Rochester, and Yale University, and discuss the value of including library users and technology specialists from many disciplines in the software design and development process
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