Collectanea Botanica, Vol 34 (2015)

Especies y comunidades vegetales del lago Poyang, el lago de agua dulce más grande de China


https://doi.org/10.3989/collectbot.2015.v34.004

H. F. Wang
Key Laboratory of Protection and Development Utilization of Tropical Crop Germplasm Resource, Ministry of Education, College of Horticulture and Landscape Agriculture, Hainan University, China

M. X. Ren
College of Horticulture and Landscape Architecture, Hainan University, China

J. López-Pujol
Botanic Institute of Barcelona (IBB-CSIC-ICUB), España

C. Ross Friedman
Department of Biological Sciences, Thompson Rivers University, Canadá

L. H. Fraser
Department of Biological Sciences, Thompson Rivers University, Canadá

G. X. Huang
Key Laboratory of Protection and Development Utilization of Tropical Crop Germplasm Resource, Ministry of Education, College of Horticulture and Landscape Agriculture, Hainan University, China

Resumen


El estudio de la riqueza y la composición de especies vegetales de un humedal es esencial a la hora de estimar su importancia ecológica y sus servicios ecosistémicos, especialmente cuando éste está sujeto a perturbaciones humanas. El lago Poyang, situado en el curso medio del río Yangtsé (China central) constituye la mayor superfície de agua dulce del país. Alberga una elevada biodiversidad y proporciona hábitats importantes para la flora y fauna locales. En la actualidad existen planes de construir una presa que mantendrá el volumen de agua del lago estable. Sin embargo, y hasta la fecha, apenas existen estudios que hayan abordado la biodiversidad del lago y los posibles efectos negativos de la presa sobre ésta (y en especial sobre las especies endémicas y raras). Así pues, se ha llevado a cabo una intensa campaña de campo combinada con una búsqueda bibliográfica con el objetivo de evaluar la riqueza de especies y comunidades vegetales del lago Poyang y sus humedales asociados. Se han identificado un total de 124 familias, 339 géneros y 512 especies (incluyendo subespecies, variedades y formas) así como ocho comunidades vegetales dominantes, confirmándose así el papel de los humedales del lago Poyang como hotspot regional de biodiversidad. Resulta imperativo estudiar los efectos del represado sobre la vegetación, y, de manera especial, todo aquello concerniente a la protección de la biodiversidad local, el mantenimiento de los servicios ecosistémicos, el control de las especies invasoras y la restauración de los ecosistemas degradados.

Palabras clave


conservación; diversidad vegetal; presa; río Yangtsé; riqueza de especies

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