Leschine Thomas M.

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Thomas M.

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  • Article
    The importance of human dimensions research in managing harmful algal blooms
    (Ecological Society of America, 2009-02-10) Bauer, Marybeth ; Hoagland, Porter ; Leschine, Thomas M. ; Blount, Benjamin G. ; Pomeroy, Caroline M. ; Lampl, Linda L. ; Scherer, Clifford W. ; Ayres, Dan L. ; Tester, Patricia A. ; Sengco, Mario R. ; Sellner, Kevin G. ; Schumacker, Joe
    Harmful algal blooms (HABs) are natural freshwater and marine hazards that impose substantial adverse impacts on the human use of coastal and marine resources. The socioeconomic and health impacts of HABs can be considerable, thereby making a case for “human dimensions” research to support HAB response. Human dimensions research is multidisciplinary, integrating social science, humanities, and other fields with natural science to enhance resource management by addressing human causes, consequences, and responses to coastal environmental problems. Case studies reported here illustrate the importance of human dimensions research. Incorporating such research into the scientific agenda – as well as into management decisions of public agencies concerned with natural resource management, environmental protection, and public health and welfare – requires the development of both strategic guidance and institutional capacity. The recent development of a multi-agency research strategy for HAB response and a strategic plan for human dimensions research represent two important steps in this direction.
  • Technical Report
    Salt marsh nitrogen analysis : fertilization and the allocation of biological productivity
    (Woods Hole Oceanographic Institution, 1979-02) Leschine, Thomas M.
    A five compartment schematic model of the flow of nitrogen through Great Sippewissett Marsh is presented. Flows are described in terms of annual inputs, outputs and intercompartmental transfers of nitrogen. The nitrogen in all forms occurring in the marsh is considered, though dissolved organic nitrogen is disaggregated from the total flow. A computer aided input - output analysis is performed on the model to assess the degree to which nitrogen inputs to the marsh surface are linked to nitrogen outputs in the form of net growth in marsh shellfish. In this way the effects of both direct and indirect flows linking the two compartments involved are considered. The analysis is done to assess the likelihood that a large scale application of fertilizer to the marsh surface will signjficantly enhance shellfish growth in marsh tidal creeks. While no definitive answer to this question can be given, it is argued that the present level of understanding of the marsh nitrogen cycle does not support an expectation that shellfish growth will be enhanced. This argument is supported by a comparative analysis which shows a strong likelihood that Spartina growth is enhanced by fertilization, an effect which has already been observed.