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Open AccessArticle

Relative Efficiency of Pitfall Trapping vs. Nocturnal Hand Collecting in Assessing Soil-Dwelling Spider Diversity along A Structural Gradient of Neotropical Habitats

1
CNRS, Ecobio (Ecosystèmes, biodiversité, évolution), Université de Rennes, UMR 6553, F-35000 Rennes, France
2
Laboratoire d’Entomologie Entobios, Rainstrasse 1, 77694 Kehl, Germany
3
UMR EcoFoG (Agroparistech, CIRAD, CNRS, INRA, Université des Antilles), Campus Agronomique, Université de Guyane, BP 316, 97379 Kourou CEDEX, France
4
AMAP (botAnique et Modélisation de l’Architecture des Plantes et des végétations), CIRAD, CNRS, INRAE, IRD, TA A51/PS2, Boulevard de la Lironde, Université de Montpellier, 34398 Montpellier CEDEX 5, France
5
CNRS, UMR EcoFoG (Agroparistech, CIRAD, INRA, Université de Guyane, Université des Antilles), Campus Agronomique, BP 316, 97379 Kourou CEDEX, France
6
Institut des Sciences de l’Evolution (ISEM, UMR 5554), Université de Montpellier, Place E. Bataillon - CC064, 34095 Montpellier CEDEX 5, France
7
Laboratoire EDB (CNRS, IRD, Université de Toulouse), bâtiment 4R1, 118, route de Narbonne, 31062 Toulouse CEDEX 9, France
8
International Center for Tropical Botany, Department of Biological Sciences, Florida International University 11200 S.W. 8th Street, Miami, FL 33199, USA
*
Author to whom correspondence should be addressed.
These authors contributed equally to the work.
Diversity 2020, 12(2), 81; https://doi.org/10.3390/d12020081
Received: 17 January 2020 / Revised: 13 February 2020 / Accepted: 14 February 2020 / Published: 19 February 2020
(This article belongs to the Special Issue Systematics and Evolution of Spiders)
Assessing spider diversity remains a great challenge, especially in tropical habitats where dozens of species can locally co-occur. Pitfall trapping is one of the most widely used techniques to collect spiders, but it suffers from several biases, and its accuracy likely varies with habitat complexity. In this study, we compared the efficiency of passive pitfall trapping versus active nocturnal hand collecting (NHC) to capture low understory-dwelling spider taxonomical (morpho-species) and functional (hunting guilds) diversity along a structural gradient of habitats in French Guiana. We focused on four habitats describing a structural gradient: garden to the orchard to the forest edge to the undisturbed forest. Overall, estimated morpho-species richness and composition did not vary consistently between habitats, but abundances of ground-hunting spiders decreased significantly with increasing habitat complexity. We found habitat-dependence differences in taxonomic diversity between sampling strategies: NHC revealed higher diversity in the orchard, whereas pitfalls resulted in higher diversity in the forest. Species turnover resulted in high dissimilarity in species composition between habitats using either method. This study shows how pitfall trapping is influenced by habitat structure, rendering this sampling method incomplete for complex, tropical environments. However, pitfall traps remain a valuable component of inventories because they sample distinct assemblage of spiders. View Full-Text
Keywords: Araneae; Guiana shield; sampling methods; diversity indices; functional diversity; species richness; turnover Araneae; Guiana shield; sampling methods; diversity indices; functional diversity; species richness; turnover
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MDPI and ACS Style

Privet, K.; Vedel, V.; Fortunel, C.; Orivel, J.; Martinez, Q.; Cerdan, A.; Baraloto, C.; Pétillon, J. Relative Efficiency of Pitfall Trapping vs. Nocturnal Hand Collecting in Assessing Soil-Dwelling Spider Diversity along A Structural Gradient of Neotropical Habitats. Diversity 2020, 12, 81. https://doi.org/10.3390/d12020081

AMA Style

Privet K, Vedel V, Fortunel C, Orivel J, Martinez Q, Cerdan A, Baraloto C, Pétillon J. Relative Efficiency of Pitfall Trapping vs. Nocturnal Hand Collecting in Assessing Soil-Dwelling Spider Diversity along A Structural Gradient of Neotropical Habitats. Diversity. 2020; 12(2):81. https://doi.org/10.3390/d12020081

Chicago/Turabian Style

Privet, Kaïna; Vedel, Vincent; Fortunel, Claire; Orivel, Jérôme; Martinez, Quentin; Cerdan, Axel; Baraloto, Christopher; Pétillon, Julien. 2020. "Relative Efficiency of Pitfall Trapping vs. Nocturnal Hand Collecting in Assessing Soil-Dwelling Spider Diversity along A Structural Gradient of Neotropical Habitats" Diversity 12, no. 2: 81. https://doi.org/10.3390/d12020081

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