Exploring the Interplay Between Local and Regional Drivers of Distribution of a Subterranean Organism

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Mammola , S , Aharon , S , Seifan , M , Lubin , Y & Gavish-Regev , E 2019 , ' Exploring the Interplay Between Local and Regional Drivers of Distribution of a Subterranean Organism ' , Diversity , vol. 11 , no. 8 , 119 . https://doi.org/10.3390/d11080119

Title: Exploring the Interplay Between Local and Regional Drivers of Distribution of a Subterranean Organism
Author: Mammola, Stefano; Aharon, Shlomi; Seifan, Merav; Lubin, Yael; Gavish-Regev, Efrat
Contributor: University of Helsinki, Zoology
Date: 2019-08
Language: eng
Number of pages: 16
Belongs to series: Diversity
ISSN: 1424-2818
URI: http://hdl.handle.net/10138/305516
Abstract: Caves are excellent model systems to study the effects of abiotic factors on species distributions due to their selective conditions. Different ecological factors have been shown to affect species distribution depending on the scale of analysis, whether regional or local. The interplay between local and regional factors in explaining the spatial distribution of cave-dwelling organisms is poorly understood. Using the troglophilic subterranean spider Artema nephilit (Araneae: Pholcidae) as a model organism, we investigated whether similar environmental predictors drive the species distribution at these two spatial scales. At the local scale, we monitored the abundance of the spiders and measured relevant environmental features in 33 caves along the Jordan Rift Valley. We then extended the analysis to a regional scale, investigating the drivers of the distribution using species distribution models. We found that similar ecological factors determined the distribution at both local and regional scales for A. nephilit. At a local scale, the species was found to preferentially occupy the outermost, illuminated, and warmer sectors of caves. Similarly, mean annual temperature, annual temperature range, and solar radiation were the most important drivers of its regional distribution. By investigating these two spatial scales simultaneously, we showed that it was possible to achieve an in-depth understanding of the environmental conditions that governs subterranean species distribution.
Subject: Araneae
distribution
Levant
local scale
regional scale
ecological niche modeling
subterranean troglophile
ECOLOGICAL NICHE
MODEL SELECTION
BEETLES COLEOPTERA
DIVERSITY PATTERNS
SPECIES RICHNESS
SPATIAL SCALES
CLIMATE
EVOLUTION
BIODIVERSITY
CRUSTACEANS
1181 Ecology, evolutionary biology
1172 Environmental sciences
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