Test of a hypothesis of territory regulation in an insectivorous bird by experimentally increasing prey abundance

Mark A. Franzblau, James Collins

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

Food availability is frequently hypothesized to be important in the regulation of territorial size. Recent theory suggests animals should respond to increased food availability by decreasing their territory. Most demonstrations of this relationship between food and territory are correlative, and few experimental tests of this hypothesis have been conducted. A field-experimental mainpulation was conducted to test three predictions of the hypothesis that food is a proximate stimulus for regulation of territory. The Rufous-sided Towhee, an insectivorous bird that is a permanent resident of chaparral in Arizona, was used to test the predictions that weekly area, total area, and fluctuations in area would be smaller within experimentally manipulated territories. Food resources were increased within five experimental territories and the response was compared with five control territories. The results did not support any of the three predictions. The hypothesis that food is a proximate stimulus for regulating territorial size was rejected. Two alternative hypotheses, that habitat quality or competition are proximate stimuli for regulating territories, could not be rejected.

Original languageEnglish (US)
Pages (from-to)164-170
Number of pages7
JournalOecologia
Volume46
Issue number2
DOIs
StatePublished - Jan 1980

Fingerprint

bird
food availability
prediction
birds
chaparral
testing
food
habitats
habitat quality
test
regulation
animals
animal
resource

ASJC Scopus subject areas

  • Ecology

Cite this

Test of a hypothesis of territory regulation in an insectivorous bird by experimentally increasing prey abundance. / Franzblau, Mark A.; Collins, James.

In: Oecologia, Vol. 46, No. 2, 01.1980, p. 164-170.

Research output: Contribution to journalArticle

@article{c0c79de8adff492389b1fa1a75a4578d,
title = "Test of a hypothesis of territory regulation in an insectivorous bird by experimentally increasing prey abundance",
abstract = "Food availability is frequently hypothesized to be important in the regulation of territorial size. Recent theory suggests animals should respond to increased food availability by decreasing their territory. Most demonstrations of this relationship between food and territory are correlative, and few experimental tests of this hypothesis have been conducted. A field-experimental mainpulation was conducted to test three predictions of the hypothesis that food is a proximate stimulus for regulation of territory. The Rufous-sided Towhee, an insectivorous bird that is a permanent resident of chaparral in Arizona, was used to test the predictions that weekly area, total area, and fluctuations in area would be smaller within experimentally manipulated territories. Food resources were increased within five experimental territories and the response was compared with five control territories. The results did not support any of the three predictions. The hypothesis that food is a proximate stimulus for regulating territorial size was rejected. Two alternative hypotheses, that habitat quality or competition are proximate stimuli for regulating territories, could not be rejected.",
author = "Franzblau, {Mark A.} and James Collins",
year = "1980",
month = "1",
doi = "10.1007/BF00540122",
language = "English (US)",
volume = "46",
pages = "164--170",
journal = "Oecologia",
issn = "0029-8519",
publisher = "Springer Verlag",
number = "2",

}

TY - JOUR

T1 - Test of a hypothesis of territory regulation in an insectivorous bird by experimentally increasing prey abundance

AU - Franzblau, Mark A.

AU - Collins, James

PY - 1980/1

Y1 - 1980/1

N2 - Food availability is frequently hypothesized to be important in the regulation of territorial size. Recent theory suggests animals should respond to increased food availability by decreasing their territory. Most demonstrations of this relationship between food and territory are correlative, and few experimental tests of this hypothesis have been conducted. A field-experimental mainpulation was conducted to test three predictions of the hypothesis that food is a proximate stimulus for regulation of territory. The Rufous-sided Towhee, an insectivorous bird that is a permanent resident of chaparral in Arizona, was used to test the predictions that weekly area, total area, and fluctuations in area would be smaller within experimentally manipulated territories. Food resources were increased within five experimental territories and the response was compared with five control territories. The results did not support any of the three predictions. The hypothesis that food is a proximate stimulus for regulating territorial size was rejected. Two alternative hypotheses, that habitat quality or competition are proximate stimuli for regulating territories, could not be rejected.

AB - Food availability is frequently hypothesized to be important in the regulation of territorial size. Recent theory suggests animals should respond to increased food availability by decreasing their territory. Most demonstrations of this relationship between food and territory are correlative, and few experimental tests of this hypothesis have been conducted. A field-experimental mainpulation was conducted to test three predictions of the hypothesis that food is a proximate stimulus for regulation of territory. The Rufous-sided Towhee, an insectivorous bird that is a permanent resident of chaparral in Arizona, was used to test the predictions that weekly area, total area, and fluctuations in area would be smaller within experimentally manipulated territories. Food resources were increased within five experimental territories and the response was compared with five control territories. The results did not support any of the three predictions. The hypothesis that food is a proximate stimulus for regulating territorial size was rejected. Two alternative hypotheses, that habitat quality or competition are proximate stimuli for regulating territories, could not be rejected.

UR - http://www.scopus.com/inward/record.url?scp=0001750513&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0001750513&partnerID=8YFLogxK

U2 - 10.1007/BF00540122

DO - 10.1007/BF00540122

M3 - Article

AN - SCOPUS:0001750513

VL - 46

SP - 164

EP - 170

JO - Oecologia

JF - Oecologia

SN - 0029-8519

IS - 2

ER -