A new approach of the biodiversity:: morphological plasticity for a freshwater diatom

被引：4

作者：

Bertrand, C ^{[1
]}

Franquet, É ^{[1
]}

Fayolle, S ^{[1
]}

Cazaubon, A ^{[1
]}

机构：

[1] Fac Sci & Tech St Jerome, Lab Ecol Continentales Mediterraneennes, UMR 6116, CNRS,IMEP, F-13397 Marseille 20, France

来源：

COMPTES RENDUS BIOLOGIES | 2003年 / 326卷 / 01期

关键词：

Asterionella formosa; morphological plasticity; biodiversity; populational level; landscape scale; anthropic hydrodynamic disturbance;

D O I：

10.1016/S1631-0691(03)00012-X

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Population responses of a planktonic freshwater diatom, Asterionella formosa Hassal, to the hydrodynamic anthropic disturbances were studied at the landscape scale, along a series of nine reservoirs, for a period of 18 months. The analysis of biotic descriptors as cell abundance, cell length and architecture has shown a strong morphological plasticity of this diatom. The morphological variability of A. formosa in response to hydrodynamic conditions favours the colonization of lacustrine freshwater ecosystem for this species. The determination of architectural indices allowed us to distinguish a modification of biodiversity along a disturbance gradient for population level. (C) 2003 Academie des sciences/Editions scientifiques et medicales Elsevier SAS. All rights reserved.

引用

页码：107 / 120

页数：14

共 43 条

[11] TEMPERATURE-DEPENDENT CHANGES IN COLONY SIZE OF THE FRESH-WATER PENNATE DIATOM ASTERIONELLA-FORMOSA (BACILLARIOPHYCEAE) AND THEIR POSSIBLE ECOLOGICAL IMPLICATIONS [J].