Browsing by Subject "Panama"

Now showing 1 - 3 of 3
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    Does relatedness matter? Phylogenetic density-dependent survival of seedlings in a tropical forest
    (Ecological Society of America, 2014) Lebrija-Trejos, Edwin; Wright, S. Joseph; Hernandez, Andres; Reich, Peter B
    A complex set of interactions among neighbors influences plant performance and community structure. Understanding their joint operation requires extensive information on species characteristics and individual performance. We evaluated first-year survival of 35 719 tropical forest seedlings of 222 species and 15 annual cohorts relative to the density of conspecific and heterospecific neighbors and the phylogenetic similarity of heterospecific neighbors. Neighbors were from two size classes, and size asymmetric interactions provided insight into likely mechanisms. Large heterospecific and conspecific neighbors reduced seedling survival equally, suggesting resource competition rather than host-specific enemies as a mechanism. In contrast, much stronger negative conspecific effects were associated with seedling neighbors capable of limited resource uptake, suggesting shared pests rather than competition as the mechanism. Survival improved, however, near phylogenetically similar heterospecific neighbors, suggesting habitat associations shared among closely related species affect spatial patterns of performance. Improved performance near phylogenetically similar neighbors is an emerging pattern in the handful of similar studies.
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    Green Infrastructure Systems as part of the Solution for Flooding in Panama
    (2020-12) Aizpurua Miranda, Nathaly
    This study aims to find solutions to mitigate the problem of flooding in Panama City. This was conducted in order to create a support containing Green Stormwater Infrastructures methods and proposals to guide the community towards more sustainable development. Panama has been notoriously affected by climate change, especially in terms of rainfall. There have been alterations in the rainfall regime that together with other factors such as pollution by disposals have caused serious problems of flooding in the capital city.However, there are limitations such as the lack of soil studies and non-easily accessible environmental information, among other things, which complicate the collection of information for a more in-depth study on which methods would be more feasible according to the sector. Hence, one of the areas most affected by the floods (Juan Diaz Township and Domingo Diaz Av) was chosen as a case study, thus demonstrating that despite being an already developed area, small changes can be made to generate a great impact. The paper can also be improved by collecting site-specific data, such as the percentage of evapotranspiration, more in-depth studies on types of plants that benefit green infrastructure systems, among others, but more time and money would have to be invested to obtain quick results . Future researchers can use this work as a starting point for the application of these systems in Panama.
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    Panama - Sustainable horticulture crop production
    (2010-11-28) McCrumb, Megan