Habitat functional response mitigates reduced foraging opportunity: implications for animal fitness and space use

Garrett M Street, John R Fieberg, Arthur R. Rodgers, Michelle Carstensen, Ron Moen, Seth A. Moore, Steve K. Windels, James D Forester

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Context: Animals selectively use landscapes to meet their energetic needs, and trade-offs in habitat use may depend on availability and environmental conditions. For example, habitat selection at high temperatures may favor thermal cover at the cost of reduced foraging efficiency under consistently warm conditions. Objective: Our objective was to examine habitat selection and space use in distinct populations of moose (Alces alces). Hypothesizing that endotherm fitness is constrained by heat dissipation efficiency, we predicted that southerly populations would exhibit greater selection for thermal cover and reduced selection for foraging habitat. Methods: We estimated individual step selection functions with shrinkage for 134 adult female moose in Minnesota, USA, and 64 in Ontario, Canada, to assess habitat selection with variation in temperature, time of day, and habitat availability. We averaged model coefficients within each site to quantify selection strength for habitats differing in forage availability and thermal cover. Results: Moose in Ontario favored deciduous and mixedwood forest, indicating selection for foraging habitat across both diel and temperature. Habitat selection patterns of moose in Minnesota were more dynamic and indicated time- and temperature-dependent trade-offs between use of foraging habitat and thermal cover. Conclusions: We detected a scale-dependent functional response in habitat selection driven by the trade-off between selection for foraging habitat and thermal cover. Landscape composition and internal state interact to produce complex patterns of space use, and animals exposed to increasingly high temperatures may mitigate fitness losses from reduced foraging efficiency by increasing selection for foraging habitat in sub-prime foraging landscapes.

Original languageEnglish (US)
Pages (from-to)1939-1953
Number of pages15
JournalLandscape Ecology
Volume31
Issue number9
DOIs
StatePublished - Nov 1 2016

Fingerprint

space use
functional response
fitness
habitat
animal
habitat selection
foraging efficiency
habitat availability
temperature
efficiency
habitat use
trade-off
forage
dissipation
energetics
environmental conditions
time of day
heat
environmental factors

Keywords

  • Alces
  • GPS
  • Habitat selection
  • Heat stress
  • Lasso
  • Model selection
  • Moose
  • Movement

Cite this

Habitat functional response mitigates reduced foraging opportunity : implications for animal fitness and space use. / Street, Garrett M; Fieberg, John R; Rodgers, Arthur R.; Carstensen, Michelle; Moen, Ron; Moore, Seth A.; Windels, Steve K.; Forester, James D.

In: Landscape Ecology, Vol. 31, No. 9, 01.11.2016, p. 1939-1953.

Research output: Contribution to journalArticle

Street, Garrett M ; Fieberg, John R ; Rodgers, Arthur R. ; Carstensen, Michelle ; Moen, Ron ; Moore, Seth A. ; Windels, Steve K. ; Forester, James D. / Habitat functional response mitigates reduced foraging opportunity : implications for animal fitness and space use. In: Landscape Ecology. 2016 ; Vol. 31, No. 9. pp. 1939-1953.
@article{72c2f01a6aa243a0a5127ca4066065a6,
title = "Habitat functional response mitigates reduced foraging opportunity: implications for animal fitness and space use",
abstract = "Context: Animals selectively use landscapes to meet their energetic needs, and trade-offs in habitat use may depend on availability and environmental conditions. For example, habitat selection at high temperatures may favor thermal cover at the cost of reduced foraging efficiency under consistently warm conditions. Objective: Our objective was to examine habitat selection and space use in distinct populations of moose (Alces alces). Hypothesizing that endotherm fitness is constrained by heat dissipation efficiency, we predicted that southerly populations would exhibit greater selection for thermal cover and reduced selection for foraging habitat. Methods: We estimated individual step selection functions with shrinkage for 134 adult female moose in Minnesota, USA, and 64 in Ontario, Canada, to assess habitat selection with variation in temperature, time of day, and habitat availability. We averaged model coefficients within each site to quantify selection strength for habitats differing in forage availability and thermal cover. Results: Moose in Ontario favored deciduous and mixedwood forest, indicating selection for foraging habitat across both diel and temperature. Habitat selection patterns of moose in Minnesota were more dynamic and indicated time- and temperature-dependent trade-offs between use of foraging habitat and thermal cover. Conclusions: We detected a scale-dependent functional response in habitat selection driven by the trade-off between selection for foraging habitat and thermal cover. Landscape composition and internal state interact to produce complex patterns of space use, and animals exposed to increasingly high temperatures may mitigate fitness losses from reduced foraging efficiency by increasing selection for foraging habitat in sub-prime foraging landscapes.",
keywords = "Alces, GPS, Habitat selection, Heat stress, Lasso, Model selection, Moose, Movement",
author = "Street, {Garrett M} and Fieberg, {John R} and Rodgers, {Arthur R.} and Michelle Carstensen and Ron Moen and Moore, {Seth A.} and Windels, {Steve K.} and Forester, {James D}",
year = "2016",
month = "11",
day = "1",
doi = "10.1007/s10980-016-0372-z",
language = "English (US)",
volume = "31",
pages = "1939--1953",
journal = "Landscape Ecology",
issn = "0921-2973",
publisher = "Springer Netherlands",
number = "9",

}

TY - JOUR

T1 - Habitat functional response mitigates reduced foraging opportunity

T2 - implications for animal fitness and space use

AU - Street, Garrett M

AU - Fieberg, John R

AU - Rodgers, Arthur R.

AU - Carstensen, Michelle

AU - Moen, Ron

AU - Moore, Seth A.

AU - Windels, Steve K.

AU - Forester, James D

PY - 2016/11/1

Y1 - 2016/11/1

N2 - Context: Animals selectively use landscapes to meet their energetic needs, and trade-offs in habitat use may depend on availability and environmental conditions. For example, habitat selection at high temperatures may favor thermal cover at the cost of reduced foraging efficiency under consistently warm conditions. Objective: Our objective was to examine habitat selection and space use in distinct populations of moose (Alces alces). Hypothesizing that endotherm fitness is constrained by heat dissipation efficiency, we predicted that southerly populations would exhibit greater selection for thermal cover and reduced selection for foraging habitat. Methods: We estimated individual step selection functions with shrinkage for 134 adult female moose in Minnesota, USA, and 64 in Ontario, Canada, to assess habitat selection with variation in temperature, time of day, and habitat availability. We averaged model coefficients within each site to quantify selection strength for habitats differing in forage availability and thermal cover. Results: Moose in Ontario favored deciduous and mixedwood forest, indicating selection for foraging habitat across both diel and temperature. Habitat selection patterns of moose in Minnesota were more dynamic and indicated time- and temperature-dependent trade-offs between use of foraging habitat and thermal cover. Conclusions: We detected a scale-dependent functional response in habitat selection driven by the trade-off between selection for foraging habitat and thermal cover. Landscape composition and internal state interact to produce complex patterns of space use, and animals exposed to increasingly high temperatures may mitigate fitness losses from reduced foraging efficiency by increasing selection for foraging habitat in sub-prime foraging landscapes.

AB - Context: Animals selectively use landscapes to meet their energetic needs, and trade-offs in habitat use may depend on availability and environmental conditions. For example, habitat selection at high temperatures may favor thermal cover at the cost of reduced foraging efficiency under consistently warm conditions. Objective: Our objective was to examine habitat selection and space use in distinct populations of moose (Alces alces). Hypothesizing that endotherm fitness is constrained by heat dissipation efficiency, we predicted that southerly populations would exhibit greater selection for thermal cover and reduced selection for foraging habitat. Methods: We estimated individual step selection functions with shrinkage for 134 adult female moose in Minnesota, USA, and 64 in Ontario, Canada, to assess habitat selection with variation in temperature, time of day, and habitat availability. We averaged model coefficients within each site to quantify selection strength for habitats differing in forage availability and thermal cover. Results: Moose in Ontario favored deciduous and mixedwood forest, indicating selection for foraging habitat across both diel and temperature. Habitat selection patterns of moose in Minnesota were more dynamic and indicated time- and temperature-dependent trade-offs between use of foraging habitat and thermal cover. Conclusions: We detected a scale-dependent functional response in habitat selection driven by the trade-off between selection for foraging habitat and thermal cover. Landscape composition and internal state interact to produce complex patterns of space use, and animals exposed to increasingly high temperatures may mitigate fitness losses from reduced foraging efficiency by increasing selection for foraging habitat in sub-prime foraging landscapes.

KW - Alces

KW - GPS

KW - Habitat selection

KW - Heat stress

KW - Lasso

KW - Model selection

KW - Moose

KW - Movement

UR - http://www.scopus.com/inward/record.url?scp=84962230439&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84962230439&partnerID=8YFLogxK

U2 - 10.1007/s10980-016-0372-z

DO - 10.1007/s10980-016-0372-z

M3 - Article

AN - SCOPUS:84962230439

VL - 31

SP - 1939

EP - 1953

JO - Landscape Ecology

JF - Landscape Ecology

SN - 0921-2973

IS - 9

ER -