Publications des scientifiques de l'IRD

Dezerald O., Talaga S., Leroy Céline, Carrias J. F., Corbara B., Dejean A., Cereghino R. (2014). Environmental determinants of macroinvertebrate diversity in small water bodies : insights from tank-bromeliads. Hydrobiologia, 723 (1), p. 77-86. ISSN 0018-8158.

Titre du document
Environmental determinants of macroinvertebrate diversity in small water bodies : insights from tank-bromeliads
Année de publication
2014
Type de document
Article référencé dans le Web of Science WOS:000327896400007
Auteurs
Dezerald O., Talaga S., Leroy Céline, Carrias J. F., Corbara B., Dejean A., Cereghino R.
Source
Hydrobiologia, 2014, 723 (1), p. 77-86 ISSN 0018-8158
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 local-regional 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 pools' carrying 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.
Plan de classement
Sciences fondamentales / Techniques d'analyse et de recherche [020] ; Ecologie, systèmes aquatiques [036] ; Etudes, transformation, conservation du milieu naturel [082]
Description Géographique
GUYANE
Localisation
Fonds IRD [F B010061388]
Identifiant IRD
fdi:010061388
Contact