Trout biomass and stream habitat relationships in the white mountains area, east-central arizona

Robert W. Clarkson, Jeffrey Wilson

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

We surveyed stream habitats and lish populations at 243 stations among 21 highelevation trout streams in the Apache-Sitgreaves National Forest and White Mountain Apache Reservation in the White Mountains area, east-ccntral Arizona, from 1986 to 1990. The While Mountains urea makes up most of the historic habitat for Apache trout Oncorhynchus apache. listed by the U.S. federal government as a threatened species. A generalized linear model relating trout biomass and stream, riparian, and geomorphic habitat variables was developed (R2 = 0.68). Among the significant variables in the systematic components of the model, bank damage by ungulates was the only variable solely influenced by land management practices. We attribute the bulk of the bank damage to domestic cattle grazing and conclude that better cattle management is necessary for improvement of trout habitats. Another significant variable, channel width, was partly dictated by geomorphology but was also correlated with bank damage by ungulates. Three significant variables in the model were completely geomorphic (station elevation, channel type, riparian area width) and thus not useful for management purposes. The model coefficient of determination was relatively low in comparison with some other trout-habitat models developed in the western USA. This result may indicate that trouts in our study area arc limited less by physical habitat than by climatic events or predation and competition influcnccs.

Original languageEnglish (US)
Pages (from-to)599-612
Number of pages14
JournalTransactions of the American Fisheries Society
Volume124
Issue number4
DOIs
StatePublished - 1995

Fingerprint

trout
mountains
mountain
biomass
habitat
habitats
ungulate
ungulates
Apache-Sitgreaves National Forest
damage
cattle
federal government
Oncorhynchus
geomorphology
riparian areas
threatened species
land management
urea
management practice
grazing

ASJC Scopus subject areas

  • Aquatic Science
  • Ecology, Evolution, Behavior and Systematics

Cite this

Trout biomass and stream habitat relationships in the white mountains area, east-central arizona. / Clarkson, Robert W.; Wilson, Jeffrey.

In: Transactions of the American Fisheries Society, Vol. 124, No. 4, 1995, p. 599-612.

Research output: Contribution to journalArticle

@article{cefaecf695f145bda27cb80379718aa4,
title = "Trout biomass and stream habitat relationships in the white mountains area, east-central arizona",
abstract = "We surveyed stream habitats and lish populations at 243 stations among 21 highelevation trout streams in the Apache-Sitgreaves National Forest and White Mountain Apache Reservation in the White Mountains area, east-ccntral Arizona, from 1986 to 1990. The While Mountains urea makes up most of the historic habitat for Apache trout Oncorhynchus apache. listed by the U.S. federal government as a threatened species. A generalized linear model relating trout biomass and stream, riparian, and geomorphic habitat variables was developed (R2 = 0.68). Among the significant variables in the systematic components of the model, bank damage by ungulates was the only variable solely influenced by land management practices. We attribute the bulk of the bank damage to domestic cattle grazing and conclude that better cattle management is necessary for improvement of trout habitats. Another significant variable, channel width, was partly dictated by geomorphology but was also correlated with bank damage by ungulates. Three significant variables in the model were completely geomorphic (station elevation, channel type, riparian area width) and thus not useful for management purposes. The model coefficient of determination was relatively low in comparison with some other trout-habitat models developed in the western USA. This result may indicate that trouts in our study area arc limited less by physical habitat than by climatic events or predation and competition influcnccs.",
author = "Clarkson, {Robert W.} and Jeffrey Wilson",
year = "1995",
doi = "10.1080/1548-8659(1995)124[lt]0599[co]TBASHR[gt]2.3.CO;2",
language = "English (US)",
volume = "124",
pages = "599--612",
journal = "Transactions of the American Fisheries Society",
issn = "0002-8487",
publisher = "American Fisheries Society",
number = "4",

}

TY - JOUR

T1 - Trout biomass and stream habitat relationships in the white mountains area, east-central arizona

AU - Clarkson, Robert W.

AU - Wilson, Jeffrey

PY - 1995

Y1 - 1995

N2 - We surveyed stream habitats and lish populations at 243 stations among 21 highelevation trout streams in the Apache-Sitgreaves National Forest and White Mountain Apache Reservation in the White Mountains area, east-ccntral Arizona, from 1986 to 1990. The While Mountains urea makes up most of the historic habitat for Apache trout Oncorhynchus apache. listed by the U.S. federal government as a threatened species. A generalized linear model relating trout biomass and stream, riparian, and geomorphic habitat variables was developed (R2 = 0.68). Among the significant variables in the systematic components of the model, bank damage by ungulates was the only variable solely influenced by land management practices. We attribute the bulk of the bank damage to domestic cattle grazing and conclude that better cattle management is necessary for improvement of trout habitats. Another significant variable, channel width, was partly dictated by geomorphology but was also correlated with bank damage by ungulates. Three significant variables in the model were completely geomorphic (station elevation, channel type, riparian area width) and thus not useful for management purposes. The model coefficient of determination was relatively low in comparison with some other trout-habitat models developed in the western USA. This result may indicate that trouts in our study area arc limited less by physical habitat than by climatic events or predation and competition influcnccs.

AB - We surveyed stream habitats and lish populations at 243 stations among 21 highelevation trout streams in the Apache-Sitgreaves National Forest and White Mountain Apache Reservation in the White Mountains area, east-ccntral Arizona, from 1986 to 1990. The While Mountains urea makes up most of the historic habitat for Apache trout Oncorhynchus apache. listed by the U.S. federal government as a threatened species. A generalized linear model relating trout biomass and stream, riparian, and geomorphic habitat variables was developed (R2 = 0.68). Among the significant variables in the systematic components of the model, bank damage by ungulates was the only variable solely influenced by land management practices. We attribute the bulk of the bank damage to domestic cattle grazing and conclude that better cattle management is necessary for improvement of trout habitats. Another significant variable, channel width, was partly dictated by geomorphology but was also correlated with bank damage by ungulates. Three significant variables in the model were completely geomorphic (station elevation, channel type, riparian area width) and thus not useful for management purposes. The model coefficient of determination was relatively low in comparison with some other trout-habitat models developed in the western USA. This result may indicate that trouts in our study area arc limited less by physical habitat than by climatic events or predation and competition influcnccs.

UR - http://www.scopus.com/inward/record.url?scp=0028815198&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0028815198&partnerID=8YFLogxK

U2 - 10.1080/1548-8659(1995)124[lt]0599[co]TBASHR[gt]2.3.CO;2

DO - 10.1080/1548-8659(1995)124[lt]0599[co]TBASHR[gt]2.3.CO;2

M3 - Article

AN - SCOPUS:0028815198

VL - 124

SP - 599

EP - 612

JO - Transactions of the American Fisheries Society

JF - Transactions of the American Fisheries Society

SN - 0002-8487

IS - 4

ER -