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Linking animal movement and remote sensing - mapping resource suitability from a remote sensing perspective

Remelgado, Ruben and Leutner, Benjamin and Safi, Kamran and Sonnenschein, Ruth and Kübert, Carina and Wegmann, Martin (2017) Linking animal movement and remote sensing - mapping resource suitability from a remote sensing perspective. Remote Sensing in Ecology and Conservation, 4 (3), pp. 211-224. Wiley. doi: 10.1002/rse2.70. ISSN 2056-3485.

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/rse2.70/full


Optical remote sensing is an important tool in the study of animal behavior providing ecologists with the means to understand species–environment interactions in combination with animal movement data. However, differences in spatial and temporal resolution between movement and remote sensing data limit their direct assimilation. In this context, we built a data-driven framework to map resource suitability that addresses these differences as well as the limitations of satellite imagery. It combines seasonal composites of multiyear surface reflectances and optimized presence and absence samples acquired with animal movement data within a cross-validation modeling scheme. Moreover, it responds to dynamic, site-specific environmental conditions making it applicable to contrasting landscapes. We tested this framework using five populations of White Storks (Ciconia ciconia) to model resource suitability related to foraging achieving accuracies from 0.40 to 0.94 for presences and 0.66 to 0.93 for absences. These results were influenced by the temporal composition of the seasonal reflectances indicated by the lower accuracies associated with higher day differences in relation to the target dates. Additionally, population differences in resource selection influenced our results marked by the negative relationship between the model accuracies and the variability of the surface reflectances associated with the presence samples. Our modeling approach spatially splits presences between training and validation. As a result, when these represent different and unique resources, we face a negative bias during validation. Despite these inaccuracies, our framework offers an important basis to analyze species–environment interactions. As it standardizes site-dependent behavioral and environmental characteristics, it can be used in the comparison of intra- and interspecies environmental requirements and improves the analysis of resource selection along migratory paths. Moreover, due to its sensitivity to differences in resource selection, our approach can contribute toward a better understanding of species requirements.

Item URL in elib:https://elib.dlr.de/118351/
Document Type:Article
Title:Linking animal movement and remote sensing - mapping resource suitability from a remote sensing perspective
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Remelgado, Rubenruben.remelgado (at) uni-wuerzburg.deUNSPECIFIED
Leutner, Benjaminbenjamin.leutner (at) uni-wuerzburg.deUNSPECIFIED
Safi, KamranMax Planck Institute for Ornithologe, Radolfzell, GermanyUNSPECIFIED
Kübert, Carinacarina.kuebert (at) uni-wuerzburg.deUNSPECIFIED
Wegmann, Martinmartin.wegmann (at) uni-wuerzburg.deUNSPECIFIED
Date:December 2017
Journal or Publication Title:Remote Sensing in Ecology and Conservation
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
DOI :10.1002/rse2.70
Page Range:pp. 211-224
Keywords:Landsat; movement ecology; optical remote sensing; resource mapping; resource suitability; surface reflectances
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Geoscientific remote sensing and GIS methods
Location: Oberpfaffenhofen
Institutes and Institutions:German Remote Sensing Data Center
Deposited By: Wöhrl, Monika
Deposited On:08 Feb 2018 13:01
Last Modified:16 Jul 2019 05:03

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