Aufgrund von Vorbereitungen auf eine neue Version von KOPS, können kommenden Montag und Dienstag keine Publikationen eingereicht werden. (Due to preparations for a new version of KOPS, no publications can be submitted next Monday and Tuesday.)
Type of Publication: | Journal article |
Publication status: | Published |
URI (citable link): | http://nbn-resolving.de/urn:nbn:de:bsz:352-2-1bfaw6f5omf5c8 |
Author: | Shipley, Jeremy Ryan; Twining, Cornelia W. |
Year of publication: | 2020 |
Published in: | Biotropica ; 52 (2020), 4. - pp. 749-757. - Wiley. - ISSN 0006-3606. - eISSN 1744-7429 |
DOI (citable link): | https://dx.doi.org/10.1111/btp.12784 |
Summary: |
Tropical dry forests are characterized by punctuated seasonal precipitation patterns that drive primary production and the availability of fruits, seeds, flowers, and insects throughout the year. In environments in which the quantity and quality of food resources varies seasonally, consumers should adjust their foraging behavior to maximize energy intake while minimizing overlap with competitors during periods of low food availability. Here, we investigated how the diets of frugivorous bats in tropical dry forests of NW Mexico varied in response to seasonal availability and how this affected dietary overlap of morphologically similar species. We performed stable isotope analyses to understand temporal and interspecific patterns of overall isotopic niche breadth, trophic position, and niche overlap in the diet of six frugivorous species of closely related New World leaf‐nosed bats (family Phyllostomidae, subfamily Stenodermatinae). We estimated seasonal changes in resource abundance in two complementary ways: (a) vegetative phenology based on long‐term remote sensing data and (b) observational data on food availability from previously published insect and plant fruiting surveys. In all species, there was a consistent pattern of reduced isotopic niche breadth during periods of low food availability. However, patterns of niche overlap varied between morphologically similar species. Overall, results from our study and others suggest that seasonal food availability likely determines overall dietary niche breadth in Phyllostomidae and that despite morphological specialization, it is likely that other mechanisms, such as opportunistic foraging and spatiotemporal niche segregation, may play a role in maintaining coexistence rather than simply dietary displacement.
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Subject (DDC): | 570 Biosciences, Biology |
Link to License: | Attribution 4.0 International |
Refereed: | Yes |
SHIPLEY, Jeremy Ryan, Cornelia W. TWINING, 2020. Seasonal dietary niche contraction in coexisting Neotropical frugivorous bats (Stenodermatinae). In: Biotropica. Wiley. 52(4), pp. 749-757. ISSN 0006-3606. eISSN 1744-7429. Available under: doi: 10.1111/btp.12784
@article{Shipley2020-07Seaso-49355, title={Seasonal dietary niche contraction in coexisting Neotropical frugivorous bats (Stenodermatinae)}, year={2020}, doi={10.1111/btp.12784}, number={4}, volume={52}, issn={0006-3606}, journal={Biotropica}, pages={749--757}, author={Shipley, Jeremy Ryan and Twining, Cornelia W.} }
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Shipley_2-1bfaw6f5omf5c8.pdf | 340 |