Environmental determinants of macroinvertebrate diversity in small water bodies: insights from tank-bromeliads

详细信息    查看全文

• 作者：Olivier Derald (1)
  Stanislas Talaga (1)
  Cine Leroy (2)
  Jean-Franois Carrias (3) (4)
  Bruno Corbara (3) (4)
  Alain Dejean (1) (5)
  Ris Chino (5) (6)
  
• 关键词：Freshwater biodiversity ; Linear mixed effect modelling ; Microcosms ; Phytotelmata ; Ponds
• 刊名：Hydrobiologia
• 出版年：2014
• 出版时间：February 2014
• 年：2014
• 卷：723
• 期：1
• 页码：77-86
• 全文大小：
• 作者单位：Olivier Derald (1)
  Stanislas Talaga (1)
  Cine Leroy (2)
  Jean-Franois Carrias (3) (4)
  Bruno Corbara (3) (4)
  Alain Dejean (1) (5)
  Ris Chino (5) (6)
  
  1. CNRS, Ecologie des Fors de Guyane (UMR-CNRS 8172), Campus Agronomique, 97379, Kourou Cedex, France
  2. IRD-UMR AMAP (botAnique et bioinforMatique de lrchitecture des Plantes), boulevard de la Lironde, TA A1/PS2, 34398, Montpellier Cedex 5, France
  3. Clermont Universit UniversitBlaise Pascal, BP 10448, 63000, Clermont-Ferrand, France
  4. CNRS, Laboratoire Microorganismes: Gome et Environnement (UMR-CNRS 6023), 63177, Aubie, France
  5. Universitde Toulouse, INP, UPS EcoLab (Laboratoire Ecologie Fonctionnelle et Environnement), 31062, Toulouse, France
  6. CNRS, EcoLab (UMR-CNRS 5245), 118 Route de Narbonne, 31062, Toulouse, France
  
• ISSN：1573-5117

文摘

The interlocking leaves of tank-forming bromeliads (Bromeliaceae) collect rainwater and detritus, thus creating a freshwater habitat for specialized organisms. Their abundance and the possibility of quantifying communities with accuracy give us unparalleled insight into how changes in local to regional environments influence community diversity in small water bodies. We sampled 365 bromeliads (365 invertebrate communities) along a southeastern to northwestern range in French Guiana. Geographic locality determined the species pool for bromeliad invertebrates, and local environments determined the abundance patterns through the selection of traits that are best adapted to the bromeliad habitats. Patterns in community structure mostly emerged from patterns of predator species occurrence and abundance across localegional environments, while the set of detritivores remained constant. Water volume had a strong positive correlation with invertebrate diversity, making it a biologically relevant measure of the poolscarrying capacity. The significant effects of incoming detritus and incident light show that changes in local environments (e.g., the conversion of forest to cropping systems) strongly influence freshwater communities. Because changes in local environments do not affect detritivores and predators equally, one may expect functional shifts as sets of invertebrates with particular traits are replaced or complemented by other sets with different traits.