Remotely Sensed Variables of Ecosystem Functioning Support Robust Predictions of Abundance Patterns for Rare Species

• Type: Article in International Scientific Journal
• Date: 2019

Authors

Arenas Castro, S (Author) Other; Regos, A (Author) Other; Goncalves, JF (Author) Other; Alcaraz Segura, D (Author) Other; Joao Honrado (Author) FCUP

Journal

Title: Remote Sensing

Vol. 11

Final page: 2086

ISSN: 2072-4292

Publisher: MDPI

Indexing

ISI Web of Knowledge - 25 Citations

Scopus - 27 Citations

Other information

Authenticus ID: P-00R-3VD

DOI: 10.3390/rs11182086

Abstract (EN): Global environmental changes are affecting both the distribution and abundance of species at an unprecedented rate. To assess these effects, species distribution models (SDMs) have been greatly developed over the last decades, while species abundance models (SAMs) have generally received less attention even though these models provide essential information for conservation management. With population abundance defined as an essential biodiversity variable (EBV), SAMs could offer spatially explicit predictions of species abundance across space and time. Satellite-derived ecosystem functioning attributes (EFAs) are known to inform on processes controlling species distribution, but they have not been tested as predictors of species abundance. In this study, we assessed the usefulness of SAMs calibrated with EFAs (as process-related variables) to predict local abundance patterns for a rare and threatened species (the narrow Iberian endemic 'Geres lily' Iris boissieri; protected under the European Union Habitats Directive), and to project inter-annual fluctuations of predicted abundance. We compared the predictive accuracy of SAMs calibrated with climate (CLI), topography (DEM), land cover (LCC), EFAs, and combinations of these. Models fitted only with EFAs explained the greatest variance in species abundance, compared to models based only on CLI, DEM, or LCC variables. The combination of EFAs and topography slightly increased model performance. Predictions of the inter-annual dynamics of species abundance were related to inter-annual fluctuations in climate, which holds important implications for tracking global change effects on species abundance. This study underlines the potential of EFAs as robust predictors of biodiversity change through population size trends. The combination of EFA-based SAMs and SDMs would provide an essential toolkit for species monitoring programs.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 16