Article
Decomposing diversity patterns of a soft-bottom macroinvertebrate community in the tropical eastern Pacific
Fecha
2009Autor
Senashov, S.I.
Yakhno, A.
Yakhno, L.
Institución
Resumen
The hyperbolic system of plane ideal plasticity equations under the Saint-Venant-Mises' yield criterion is considered. Its' characteristics curves are deformed by the action of admitted group of point transformations, that permits to construct a new analytical solution. The mechanical sense of obtained characteristic fields is discussed. The general algorithm of the relation of solutions of quasilinear hyperbolic system of two homogeneous equations of two independent variables is proposed. " 2009 Elsevier Ltd. All rights reserved.",,,,,,"10.1016/j.na.2009.01.161",,,"http://hdl.handle.net/20.500.12104/40505","http://www.scopus.com/inward/record.url?eid=2-s2.0-72149121546&partnerID=40&md5=8de203f29b83be3231bd87d42e928ab6",,,,,,"12",,"Nonlinear Analysis, Theory, Methods and Applications",,"e1274 e1284",,"71",,"Scopus WOS",,,,,,"Boundary value problems for hyperbolic systems of first-order PDE; Exact solutions of differential equations; Lie group and algebra methods; Plasticity; Symmetry analysis",,,,,,"Deformation of characteristic curves of the plane ideal plasticity equations by point symmetries",,"Article"
"42273","123456789/35008",,"Godnez-Domnguez, E., Centro de Ecologa Costera, Centro Universitario de la Costa Sur, Universidad de Guadalajara, V Gmez Farias 82, San Patricio-Melaque, Jalisco, 48980, Mexico, Departamento de Biologa Animal, Biologa Vegetal y Ecologa, Universidad de A Corua, Campus da Zapateira s/n, A Corua, 15071, Spain; Freire, J., Departamento de Biologa Animal, Biologa Vegetal y Ecologa, Universidad de A Corua, Campus da Zapateira s/n, A Corua, 15071, Spain; Franco-Gordo, C., Centro de Ecologa Costera, Centro Universitario de la Costa Sur, Universidad de Guadalajara, V Gmez Farias 82, San Patricio-Melaque, Jalisco, 48980, Mexico, Departamento de Biologa Animal, Biologa Vegetal y Ecologa, Universidad de A Corua, Campus da Zapateira s/n, A Corua, 15071, Spain; Gonzlez-Sansn, G., Centro de Investigaciones Marinas, Universidad de La Habana, La Habana, Cuba",,"Godnez-Domnguez, E. Freire, J. Franco-Gordo, C. Gonzlez-Sansn, G.",,"2009",,"Diversity is one of the most frequently used attributes of ecological communities, and there is a long-standing discussion about their adequate use, calculus and interpretation. One of the most conspicuous and simple diversity estimators is species richness, but it has been criticized by recurrent pitfalls, which has biased comparisons and the testing of hypotheses. Otherwise, synthetic ecological indices of diversity are difficult to interpret due to the underlying complex or cryptic concepts. Most of the studies in soft-bottom macroinvertebrate communities trying to estimate species richness, have actually quantified species diversity as species density; the number of species per unit area. In the present study, the diversity of a tropical Pacific soft bottom community is analytically decomposed using two null models to assess species richness and evenness, and the slope of speciesarea curves to estimate species density. A declining trend of species richness was observed along a 2-year period and could be related to the cumulative effects of interannual environmental variability and fishing disturbance. The speciesarea relationship could be considered a good indicator of spatial heterogeneity, specifically to illustrate the depth gradient. Local abundance was negatively correlated with evenness, showing that high-density communities are the result of increases in abundance of a few dominant species. Here we demonstrate that seasonality, depth and abundance could explain diversity in soft-bottom macroinvertebrate communities of coastal waters and propose a robust procedure to survey diversity as a part of monitoring programmes of coastal management. " 2008 Copyright Marine Biological Association of the United Kingdom.