Vegetation structure and climate shape mountain arthropod distributions across trophic levels

Author:

Martinez‐Almoyna Camille1ORCID,Calderòn‐Sanou Irene1ORCID,Lionnet Clément1,Gielly Ludovic1ORCID,Boyer Frédéric1,Dufour Paul1ORCID,Dunyach Lily1,Miquel Christian1,Ohlmann Marc1ORCID,Poulenard Jérôme2ORCID,Renaud Julien1,Saillard Amélie1ORCID,Si‐Moussi Sara1ORCID,Stephan Ruth1ORCID,Varoux Mary1ORCID, ,Münkemüller Tamara1,Thuiller Wilfried1ORCID

Affiliation:

1. Laboratoire d'Ecologie Alpine Université Grenoble Alpes, Université Savoie Mont Blanc, CNRS, LECA Grenoble France

2. EDYTEM, Université Savoie Mont‐Blanc, CNRS Le Bourget du Lac France

Abstract

Abstract Arthropods play a vital role in ecosystems; yet, their distributions remain poorly understood, particularly in mountainous regions. This study delves into the modelling of the distribution of 31 foliar arthropod genera in the French Alps, using a comprehensive approach encompassing multi‐trophic sampling, community DNA metabarcoding and random forest models. The results underscore the significant importance of vegetation structure, such as herbaceous vegetation density, and forest density and heterogeneity, along with climate, in shaping the distributions of most arthropods. These responses to environmental gradients are consistent across trophic groups, with the exception of nectarivores, whose distributions are more sensitive to landscape structure and water availability. By leveraging community DNA metabarcoding, this study sheds light on the understudied drivers of arthropod distributions, emphasizing the importance of modelling across diverse trophic groups to anticipate arthropod responses to global change.

Funder

Agence Nationale de la Recherche

Office Français de la Biodiversité

Publisher

Wiley

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