Publication Details

Category Text Publication
Reference Category Journals
DOI 10.1016/j.ecolmodel.2019.108914
Document author version
Title (Primary) Mitigating bioenergy-driven biodiversity decline: A modelling approach with the European brown hare
Author Langhammer, M.; Grimm, V.
Source Titel Ecological Modelling
Year 2020
Department OESA; iDiv
Volume 416
Page From art. 108914
Language englisch
Keywords Agent-based modelling Mitigation measures Agriculture European brown hare Land-Use change Lepus europaeus
Abstract The cultivation of energy crops leads to direct and indirect land use changes that impair the biodiversity of the agricultural landscape. In our study, we analyse the effects of mitigation measures on the European brown hare (Lepus europaeus), which is directly affected by ongoing land use change and has experienced widespread decline throughout Europe since the 1960s. Therefore, we developed a spatially explicit and individual-based ecological model to study the effects of different landscape configurations and compositions on hare population development. As an input, we used two 4 × 4 km large model landscapes, which were generated by a landscape generator based on real field sizes and crop proportions and differed in average field size and crop composition. The crops grown annually are evaluated in terms of forage suitability, breeding suitability and crop richness for the hare. In six mitigation scenarios, we investigated the effects of a 10 % increase in the following measures: (1) mixed silphie, (2) miscanthus, (3) grass-clover ley, (4) alfalfa, (5) set-aside, and (6) general crop richness. All mitigation measures had significant effects on hare population development. Compared to the base scenario, the relative change in hare abundance ranged from a factor of 0.56 in the grass-clover ley scenario to -0.16 in the miscanthus scenario. The mitigation measures of mixed silphie, grass-clover ley and increased crop richness led to distinct increases in hare abundance in both landscapes (> 0.3). The results show that both landscape configuration and composition have a significant effect on hare population development, which responds particularly strongly to compositional changes. The increase in crop diversity, e.g., through the cultivation of alternative energy crops such as mixed silphie and grass-clover ley, proves to be beneficial for the brown hare.
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Langhammer, M., Grimm, V. (2020):
Mitigating bioenergy-driven biodiversity decline: A modelling approach with the European brown hare
Ecol. Model. 416 , art. 108914 10.1016/j.ecolmodel.2019.108914