The Effects of Spatially Heterogeneous Prey Distributions on Detection Patterns in Foraging Seabirds
9 páginas, 1 tabla, 5 figuras. Many attempts to relate animal foraging patterns to landscape heterogeneity are focused on the analysis of foragers movements. Resource detection patterns in space and time are not commonly studied, yet they are tightly coupled to landscape properties and add relevant...
Published in: | PLoS ONE |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Public Library of Science
2012
|
Subjects: | |
Online Access: | http://hdl.handle.net/10261/131730 https://doi.org/10.1371/journal.pone.0034317 |
id |
ftcsic:oai:digital.csic.es:10261/131730 |
---|---|
record_format |
openpolar |
spelling |
ftcsic:oai:digital.csic.es:10261/131730 2024-02-11T10:03:21+01:00 The Effects of Spatially Heterogeneous Prey Distributions on Detection Patterns in Foraging Seabirds Miramontes, Octavio Boyer, Denis Bartumeus, Frederic 2012 http://hdl.handle.net/10261/131730 https://doi.org/10.1371/journal.pone.0034317 en eng Public Library of Science Publisher's version http://dx.doi.org/10.1371/journal.pone.0034317 Sí PLoS ONE 7(4): e34317 (2012) 1932-6203 http://hdl.handle.net/10261/131730 doi:10.1371/journal.pone.0034317 22514629 open artículo http://purl.org/coar/resource_type/c_6501 2012 ftcsic https://doi.org/10.1371/journal.pone.0034317 2024-01-16T10:15:04Z 9 páginas, 1 tabla, 5 figuras. Many attempts to relate animal foraging patterns to landscape heterogeneity are focused on the analysis of foragers movements. Resource detection patterns in space and time are not commonly studied, yet they are tightly coupled to landscape properties and add relevant information on foraging behavior. By exploring simple foraging models in unpredictable environments we show that the distribution of intervals between detected prey (detection statistics) is mostly determined by the spatial structure of the prey field and essentially distinct from predator displacement statistics. Detections are expected to be Poissonian in uniform random environments for markedly different foraging movements (e.g. Le´vy and ballistic). This prediction is supported by data on the time intervals between diving events on short-range foraging seabirds such as the thick-billed murre (Uria lomvia). However, Poissonian detection statistics is not observed in long-range seabirds such as the wandering albatross (Diomedea exulans) due to the fractal nature of the prey field, covering a wide range of spatial scales. For this scenario, models of fractal prey fields induce non-Poissonian patterns of detection in good agreement with two albatross data sets. We find that the specific shape of the distribution of time intervals between prey detection is mainly driven by meso and submeso-scale landscape structures and depends little on the forager strategy or behavioral responses. OM and DB were supported by PAPIIT-Universidad Nacional Auto´noma de Me´xico Grants IN-118306, IN-107309 and IN-101712. FB is supported by the Ramo´n y Cajal Program from the Spanish Ministry of Science and Innovation. Peer reviewed Article in Journal/Newspaper Diomedea exulans thick-billed murre Uria lomvia Wandering Albatross uria Digital.CSIC (Spanish National Research Council) Papiit ENVELOPE(-77.196,-77.196,61.475,61.475) PLoS ONE 7 4 e34317 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
description |
9 páginas, 1 tabla, 5 figuras. Many attempts to relate animal foraging patterns to landscape heterogeneity are focused on the analysis of foragers movements. Resource detection patterns in space and time are not commonly studied, yet they are tightly coupled to landscape properties and add relevant information on foraging behavior. By exploring simple foraging models in unpredictable environments we show that the distribution of intervals between detected prey (detection statistics) is mostly determined by the spatial structure of the prey field and essentially distinct from predator displacement statistics. Detections are expected to be Poissonian in uniform random environments for markedly different foraging movements (e.g. Le´vy and ballistic). This prediction is supported by data on the time intervals between diving events on short-range foraging seabirds such as the thick-billed murre (Uria lomvia). However, Poissonian detection statistics is not observed in long-range seabirds such as the wandering albatross (Diomedea exulans) due to the fractal nature of the prey field, covering a wide range of spatial scales. For this scenario, models of fractal prey fields induce non-Poissonian patterns of detection in good agreement with two albatross data sets. We find that the specific shape of the distribution of time intervals between prey detection is mainly driven by meso and submeso-scale landscape structures and depends little on the forager strategy or behavioral responses. OM and DB were supported by PAPIIT-Universidad Nacional Auto´noma de Me´xico Grants IN-118306, IN-107309 and IN-101712. FB is supported by the Ramo´n y Cajal Program from the Spanish Ministry of Science and Innovation. Peer reviewed |
format |
Article in Journal/Newspaper |
author |
Miramontes, Octavio Boyer, Denis Bartumeus, Frederic |
spellingShingle |
Miramontes, Octavio Boyer, Denis Bartumeus, Frederic The Effects of Spatially Heterogeneous Prey Distributions on Detection Patterns in Foraging Seabirds |
author_facet |
Miramontes, Octavio Boyer, Denis Bartumeus, Frederic |
author_sort |
Miramontes, Octavio |
title |
The Effects of Spatially Heterogeneous Prey Distributions on Detection Patterns in Foraging Seabirds |
title_short |
The Effects of Spatially Heterogeneous Prey Distributions on Detection Patterns in Foraging Seabirds |
title_full |
The Effects of Spatially Heterogeneous Prey Distributions on Detection Patterns in Foraging Seabirds |
title_fullStr |
The Effects of Spatially Heterogeneous Prey Distributions on Detection Patterns in Foraging Seabirds |
title_full_unstemmed |
The Effects of Spatially Heterogeneous Prey Distributions on Detection Patterns in Foraging Seabirds |
title_sort |
effects of spatially heterogeneous prey distributions on detection patterns in foraging seabirds |
publisher |
Public Library of Science |
publishDate |
2012 |
url |
http://hdl.handle.net/10261/131730 https://doi.org/10.1371/journal.pone.0034317 |
long_lat |
ENVELOPE(-77.196,-77.196,61.475,61.475) |
geographic |
Papiit |
geographic_facet |
Papiit |
genre |
Diomedea exulans thick-billed murre Uria lomvia Wandering Albatross uria |
genre_facet |
Diomedea exulans thick-billed murre Uria lomvia Wandering Albatross uria |
op_relation |
Publisher's version http://dx.doi.org/10.1371/journal.pone.0034317 Sí PLoS ONE 7(4): e34317 (2012) 1932-6203 http://hdl.handle.net/10261/131730 doi:10.1371/journal.pone.0034317 22514629 |
op_rights |
open |
op_doi |
https://doi.org/10.1371/journal.pone.0034317 |
container_title |
PLoS ONE |
container_volume |
7 |
container_issue |
4 |
container_start_page |
e34317 |
_version_ |
1790599560052080640 |