Characteristics of mount graham red squirrel nest sites in a mixed conifer forest

Melissa J Merrick, Sadie R. Bertelsen, John Koprowski

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The Mount Graham red squirrel (Tamiasciurus hudsonicus grahamensis) is constrained to the Pinaleño Mountains in southeastern Arizona, USA. The population's endangered status and extensive forest damage from insects and fire warrants a better understanding of habitat variables important for nest site selection. We examined characteristics of cavity (n = 91) and drey (n = 38) nests and compared these to random sites (n = 113). Dreys were found primarily in Engelmann spruce (Picea engelmannii) and corkbark fir (Abies lasiocarpa var. arizonica). Cavity nests occurred primarily in aspen (Populus tremuloides) and corkbark fir. Squirrels selected nest sites with higher canopy cover and more corkbark fir, decayed logs, and living trees. Forest management plans emphasizing thinning must consider how altering these habitat characteristics could affect availability and suitability of tree stands for nesting squirrels.

Original languageEnglish (US)
Pages (from-to)1958-1963
Number of pages6
JournalJournal of Wildlife Management
Volume71
Issue number6
DOIs
StatePublished - Aug 2007

Fingerprint

nest site
squirrels
mixed forests
Abies
nesting sites
coniferous forests
coniferous tree
Picea engelmannii
nest
cavity
habitat
site selection
nests
forest damage
Tamiasciurus hudsonicus
forest management
thinning
Abies lasiocarpa
Populus tremuloides
canopy

Keywords

  • Arizona
  • Endangered species
  • Habitat selection
  • Mount Graham red squirrel
  • Nest-site selection
  • Tamiasciurus hudsonicus grahamensis

ASJC Scopus subject areas

  • Animal Science and Zoology
  • Ecology

Cite this

Characteristics of mount graham red squirrel nest sites in a mixed conifer forest. / Merrick, Melissa J; Bertelsen, Sadie R.; Koprowski, John.

In: Journal of Wildlife Management, Vol. 71, No. 6, 08.2007, p. 1958-1963.

Research output: Contribution to journalArticle

@article{20d89cefd8c342dfbabd4605f321ef1e,
title = "Characteristics of mount graham red squirrel nest sites in a mixed conifer forest",
abstract = "The Mount Graham red squirrel (Tamiasciurus hudsonicus grahamensis) is constrained to the Pinale{\~n}o Mountains in southeastern Arizona, USA. The population's endangered status and extensive forest damage from insects and fire warrants a better understanding of habitat variables important for nest site selection. We examined characteristics of cavity (n = 91) and drey (n = 38) nests and compared these to random sites (n = 113). Dreys were found primarily in Engelmann spruce (Picea engelmannii) and corkbark fir (Abies lasiocarpa var. arizonica). Cavity nests occurred primarily in aspen (Populus tremuloides) and corkbark fir. Squirrels selected nest sites with higher canopy cover and more corkbark fir, decayed logs, and living trees. Forest management plans emphasizing thinning must consider how altering these habitat characteristics could affect availability and suitability of tree stands for nesting squirrels.",
keywords = "Arizona, Endangered species, Habitat selection, Mount Graham red squirrel, Nest-site selection, Tamiasciurus hudsonicus grahamensis",
author = "Merrick, {Melissa J} and Bertelsen, {Sadie R.} and John Koprowski",
year = "2007",
month = "8",
doi = "10.2193/2006-260",
language = "English (US)",
volume = "71",
pages = "1958--1963",
journal = "Journal of Wildlife Management",
issn = "0022-541X",
publisher = "Wiley-Blackwell",
number = "6",

}

TY - JOUR

T1 - Characteristics of mount graham red squirrel nest sites in a mixed conifer forest

AU - Merrick, Melissa J

AU - Bertelsen, Sadie R.

AU - Koprowski, John

PY - 2007/8

Y1 - 2007/8

N2 - The Mount Graham red squirrel (Tamiasciurus hudsonicus grahamensis) is constrained to the Pinaleño Mountains in southeastern Arizona, USA. The population's endangered status and extensive forest damage from insects and fire warrants a better understanding of habitat variables important for nest site selection. We examined characteristics of cavity (n = 91) and drey (n = 38) nests and compared these to random sites (n = 113). Dreys were found primarily in Engelmann spruce (Picea engelmannii) and corkbark fir (Abies lasiocarpa var. arizonica). Cavity nests occurred primarily in aspen (Populus tremuloides) and corkbark fir. Squirrels selected nest sites with higher canopy cover and more corkbark fir, decayed logs, and living trees. Forest management plans emphasizing thinning must consider how altering these habitat characteristics could affect availability and suitability of tree stands for nesting squirrels.

AB - The Mount Graham red squirrel (Tamiasciurus hudsonicus grahamensis) is constrained to the Pinaleño Mountains in southeastern Arizona, USA. The population's endangered status and extensive forest damage from insects and fire warrants a better understanding of habitat variables important for nest site selection. We examined characteristics of cavity (n = 91) and drey (n = 38) nests and compared these to random sites (n = 113). Dreys were found primarily in Engelmann spruce (Picea engelmannii) and corkbark fir (Abies lasiocarpa var. arizonica). Cavity nests occurred primarily in aspen (Populus tremuloides) and corkbark fir. Squirrels selected nest sites with higher canopy cover and more corkbark fir, decayed logs, and living trees. Forest management plans emphasizing thinning must consider how altering these habitat characteristics could affect availability and suitability of tree stands for nesting squirrels.

KW - Arizona

KW - Endangered species

KW - Habitat selection

KW - Mount Graham red squirrel

KW - Nest-site selection

KW - Tamiasciurus hudsonicus grahamensis

UR - http://www.scopus.com/inward/record.url?scp=48249096699&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=48249096699&partnerID=8YFLogxK

U2 - 10.2193/2006-260

DO - 10.2193/2006-260

M3 - Article

AN - SCOPUS:48249096699

VL - 71

SP - 1958

EP - 1963

JO - Journal of Wildlife Management

JF - Journal of Wildlife Management

SN - 0022-541X

IS - 6

ER -