Habitat filtering and inferred dispersal ability condition across-scale species turnover and rarity in Macaronesian island spider assemblages

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Malumbres-Olarte , J , Rigal , F , Girardello , M , Cardoso , P , Crespo , L C , Amorim , I R , Arnedo , M , Boieiro , M , Carvalho , J C , Carvalho , R , Gabriel , R , Lamelas-Lopez , L , López , H , Paulo , O S , Pereira , F , Pérez-Delgado , A J , Rego , C , Romeiras , M , Ros-Prieto , A , Oromí , P , Vieira , A , Emerson , B C & Borges , P A V 2021 , ' Habitat filtering and inferred dispersal ability condition across-scale species turnover and rarity in Macaronesian island spider assemblages ' , Journal of Biogeography , vol. 48 , no. 12 , pp. 3131-3144 . https://doi.org/10.1111/jbi.14271

Title: Habitat filtering and inferred dispersal ability condition across-scale species turnover and rarity in Macaronesian island spider assemblages
Author: Malumbres-Olarte, Jagoba; Rigal, François; Girardello, Marco; Cardoso, Pedro; Crespo, Luís Carlos; Amorim, Isabel R.; Arnedo, Miquel; Boieiro, Mário; Carvalho, José Carlos; Carvalho, Rui; Gabriel, Rosalina; Lamelas-Lopez, Lucas; López, Heriberto; Paulo, Octávio S.; Pereira, Fernando; Pérez-Delgado, Antonio J.; Rego, Carla; Romeiras, Maria; Ros-Prieto, Alejandra; Oromí, Pedro; Vieira, Ana; Emerson, Brent C.; Borges, Paulo A. V.
Contributor organization: Finnish Museum of Natural History
Date: 2021-12
Language: eng
Number of pages: 14
Belongs to series: Journal of Biogeography
ISSN: 0305-0270
DOI: https://doi.org/10.1111/jbi.14271
URI: http://hdl.handle.net/10138/338684
Abstract: Aim: Habitat diversity has been linked to the diversity and structure of island communities, however, little is known about patterns and processes within habitats. Here we aim to determine the contributions of habitat type and inferred dispersal frequency to the differences in taxonomic structure between assemblages in the same island habitat. Location: The Macaronesian archipelagos (Azores, Madeira, the Canary Islands and Cabo Verde). Taxon: Spiders (Araneae). Methods: We established forest and dry habitat sites (each with five plots) on two islands per archipelago. We collected spiders using standardised sampling protocols. We tested the differences in beta diversity separately for each habitat and for each inferred category of ballooning (an aerial dispersal strategy) frequency across geographic scales through nested non-parametric permutational multivariate analyses of variance. We then tested whether ballooning and habitat influenced heterogeneity in species composition (dispersion in beta diversity) in the two habitat types. We analysed the effects of habitat and ballooning on species abundance distribution (SAD) and rarity by fitting Gambin models and evaluating the contribution of ballooning categories to SAD. Results: Communities of the same archipelago and habitat were taxonomically more similar, and beta diversity increased with geographic scale, being greater in dry habitats. There was greater species replacement among assemblages in dry habitats than in forests, with greater differences for rare ballooners. There were no differences in SAD between habitats although dry habitat sites seemed to harbour more species with low abundances (rare species) than forests. Main conclusions: Habitat type does not only condition the differences between spider assemblages of the same habitat but also the scale at which they occur. These differences may be determined by the heterogeneity in the physical structure of each habitat as well as how much this structure facilitates aerial dispersal (ballooning), and should be considered in theories/hypotheses on island community assembly as well as in conservation strategies.
Description: Publisher Copyright: © 2021 The Authors. Journal of Biogeography published by John Wiley & Sons Ltd.
Subject: 1181 Ecology, evolutionary biology
1172 Environmental sciences
beta diversity
COBRA sampling protocols
neutral processes
niche processes
Peer reviewed: Yes
Rights: cc_by_nc_nd
Usage restriction: openAccess
Self-archived version: publishedVersion

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