Examinando por Materia "Vegetation"

Mostrando 1 - 2 de 2
  • No hay miniatura disponible
    Ítem
    A Classification System for Colombian Wetlands: an Essential Step Forward in Open Environmental Policy-Making
    (Springer Netherlands, 2019-01-01) Ricaurte L.F.; Patiño J.E.; Zambrano D.F.R.; Arias-G J.C.; Acevedo O.; Aponte C.; Medina R.; González M.; Rojas S.; Flórez C.; Estupinan-Suarez L.M.; Jaramillo Ú.; Santos A.C.; Lasso C.A.; Nivia A.A.D.; Calle S.R.; Vélez J.I.; Acosta J.H.C.; Duque S.R.; Núñez-Avellaneda M.; Correa I.D.; Rodríguez-Rodríguez J.A.; Vilardy Q S.P.; Prieto-C A.; Rudas-Ll A.; Cleef A.M.; Finlayson C.M.; Junk W.J.; Universidad EAFIT. Departamento de Geología; Ciencias del Mar
    Knowledge about the distribution and diversity of wetlands has become an essential tool for environmental management and policy-making. Yet, while recent estimates indicate that 27% of the area of Colombia is covered by wetlands and despite a number of regional studies, information about the diversity of wetlands nationally is scarce. In response, we present a national wetland classification system that is based on an ecological approach, from the perspective of wetland scientists, and which builds upon the assumptions underlying the flood pulse concept and hydrogeomorphic approach. Thus, the approach and structure of the Brazilian wetland classification system are used, with geomorphological adjustments made according to Colombia’s topography. The classification is hierarchical, multi-scale, functional, and organized according to four levels (system, macroregion, subsystem, and class), with the wetland diversity of Colombia represented nationally by 89 macrohabitats across marine-coastal, inland, and anthropogenic systems. The primary purpose of this classification is to provide integrated and organized information on the distribution and diversity of Colombian wetlands that will serve as a baseline for transparent environmental policy-making. © 2019, Society of Wetland Scientists.
  • No hay miniatura disponible
    Ítem
    A REVISION OF THE DIDELPHID MARSUPIAL GENUS MARMOSA PART 2. SPECIES OF THE RAPPOSA GROUP (SUBGENUS MICOUREUS)
    (AMER MUSEUM NATURAL HISTORY, 2020-06-01) Voss, Robert S.; Giarla, Thomas C.; Diaz-Nieto, Juan F.; Jansa, Sharon A.; Universidad EAFIT. Departamento de Ciencias; Biodiversidad, Evolución y Conservación
    In this report, the second of a revisionary series on mouse opossums (Marmosa), we analyze cytochrome b sequence data from 166 specimens of the subgenus Micoureus and delimit putative species using the multirate Poisson Tree Processes (mPTP) method. That analysis identifies 21 putative species, many of which can be matched with available names, including alstoni, constantiae, demerarae, limae, germana, meridae, paraguayana, parda, perplexa, phaea, rapposa, and rutteri. However, some of these nominal taxa are not morphologically diagnosable, and in the absence of other corroborating evidence, we do not recommend that they all be recognized as valid. Phylogenetic analyses of a multigene dataset suggest that putative species of Micoureus belong to several wellsupported clades, one of which (the ``Rapposa Group'') is revised in this report. As defined herein, the Rapposa Group includes at least three valid species: M. rapposa Thomas, 1899 (including budini Thomas, 1920); M. parda Tate, 1931; and M. rutteri Thomas, 1924. Herein we document their ecogeographic distributions and diagnostic traits, comment on their taxonomic histories, and list the specimens we examined (including all relevant type material).