1. Small and large spatial scale coexistence of ctenid spiders in a neotropical forest (French Guiana)
- Author
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Boris Leroy, Vincent Vedel, Julien Pétillon, El Aziz Djoudi, Biodiversité et gestion des territoires EA 7316, Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA), Ecologie des forêts de Guyane (UMR ECOFOG), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-AgroParisTech-Université de Guyane (UG)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA), ANDRA, Agence Nationale pour la Gestion des Déchets Radioactifs, MERN, Ministère de l'Énergie et des Ressources Naturelles, Université des Antilles (UA)-Université de Guyane (UG)-Centre National de la Recherche Scientifique (CNRS)-AgroParisTech-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA), and EntoBios more...
- Subjects
0106 biological sciences ,Species distribution ,Population ,inselberg ,Rainforest ,Biology ,Spatial distribution ,010603 evolutionary biology ,01 natural sciences ,flooding ,parasitic diseases ,education ,Relative species abundance ,Ecology, Evolution, Behavior and Systematics ,education.field_of_study ,Ecology ,010604 marine biology & hydrobiology ,fungi ,Guianese shield ,Species diversity ,Habitat ,juveniles ,Araneae ,Animal Science and Zoology ,Quadrat ,[SDE.BE]Environmental Sciences/Biodiversity and Ecology - Abstract
International audience; While spiders constitute the most abundant and diverse arthropods in many habitats, they remained under-studied, especially in tropical rainforests. The goal of this study is to assess the spatial distribution of the spider family Ctenidae by assessing associations of species diversity and population traits among different habitat conditions. Fieldwork was carried out during 2013 in habitats varying in flooding frequency (plateau vs. flooded forest) and elevation (inselberg vs. lowland) in the Nouragues National Natural Reserve, French Guiana. Assemblage composition, population structure, and trait measurements of one dominant species were assessed using hand collection in replicated quadrats. We found strong effects on ctenid assemblages attributable to both elevation and flooding, with changes in relative abundance of species among habitats, but few correlated densities between species. At the population level, main differences in species distribution between and within habitats were detected only when juveniles were taken into account. No effect of elevation was found on the measurements of traits of the dominant species, but legs were proportionally shorter in flooded habitats, suggesting reduced active dispersal in these habitats. Our study highlights the value of complementary of measures of diversity and traits at different biological scales in Ctenidae. © 2018 Istituto per lo Studio degli Ecosistemi of the Consiglio Nazionale delle Ricerche, Firenze. more...
- Published
- 2018
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