The latitudinal gradient of species diversity among North American grasshoppers (Acrididae) within a single habitat: A test of the spatial heterogeneity hypothesis

Research output: Contribution to journalArticle

67 Citations (Scopus)

Abstract

The spatial heterogeneity hypothesis predicts a positive relationship between habitat complexity and species diversity: the greater the heterogeneity of a habitat, the greater the number of species in that habitat. On a regional scale, this hypothesis has been proposed to explain the increase in species diversity from the poles to the tropics: the tropics are more diverse because they contain more habitats. On the local scale, the spatial heterogeneity hypothesis suggests that the tropics are more diverse because they contain more microhabitats. The positive relationship between habitat heterogeneity and species diversity, on the local scale, is well documented. In this paper, we test whether habitat heterogeneity on the local scale can explain the latitudinal gradient of species diversity on the regional scale. We determined the latitudinal gradient of species diversity of 305 species of North American grasshoppers using published distribution maps. We compared the slope of this multihabitat (regional-scale) gradient with the slope of a withinhabitat (local-scale) gradient in the prairie grasslands. Our results show no significant difference between the slopes at the two scales. We tested the generality of our results by comparing multi- and within-habitat latitudinal gradients of species diversity for ants, scorpions and mammals using data from the literature. These results are in accordance with those from grasshoppers. We can therefore reject the local-scale spatial heterogeneity hypothesis as a mechanism explaining the regional-scale latitudinal gradient of species diversity. We discuss alternative mechanisms that produce this gradient.

Original languageEnglish (US)
Pages (from-to)553-560
Number of pages8
JournalJournal of Biogeography
Volume25
Issue number3
StatePublished - May 1998

Fingerprint

Schistocerca americana
Acrididae
grasshopper
latitudinal gradient
biodiversity
habitat
species diversity
habitats
tropics
testing
Scorpiones
grasshoppers
test
Pole
microhabitat
prairies
prairie
microhabitats
ant
Formicidae

Keywords

  • Acrididae
  • Grasshopper
  • Latitudinal diversity gradient
  • Spatial heterogeneity hypothesis
  • Species diversity

ASJC Scopus subject areas

  • Ecology
  • Geography, Planning and Development

Cite this

@article{a631d9a8f84e4b058b91b7fef430868e,
title = "The latitudinal gradient of species diversity among North American grasshoppers (Acrididae) within a single habitat: A test of the spatial heterogeneity hypothesis",
abstract = "The spatial heterogeneity hypothesis predicts a positive relationship between habitat complexity and species diversity: the greater the heterogeneity of a habitat, the greater the number of species in that habitat. On a regional scale, this hypothesis has been proposed to explain the increase in species diversity from the poles to the tropics: the tropics are more diverse because they contain more habitats. On the local scale, the spatial heterogeneity hypothesis suggests that the tropics are more diverse because they contain more microhabitats. The positive relationship between habitat heterogeneity and species diversity, on the local scale, is well documented. In this paper, we test whether habitat heterogeneity on the local scale can explain the latitudinal gradient of species diversity on the regional scale. We determined the latitudinal gradient of species diversity of 305 species of North American grasshoppers using published distribution maps. We compared the slope of this multihabitat (regional-scale) gradient with the slope of a withinhabitat (local-scale) gradient in the prairie grasslands. Our results show no significant difference between the slopes at the two scales. We tested the generality of our results by comparing multi- and within-habitat latitudinal gradients of species diversity for ants, scorpions and mammals using data from the literature. These results are in accordance with those from grasshoppers. We can therefore reject the local-scale spatial heterogeneity hypothesis as a mechanism explaining the regional-scale latitudinal gradient of species diversity. We discuss alternative mechanisms that produce this gradient.",
keywords = "Acrididae, Grasshopper, Latitudinal diversity gradient, Spatial heterogeneity hypothesis, Species diversity",
author = "Goggy Davidowitz and Rosenzweig, {Michael L}",
year = "1998",
month = "5",
language = "English (US)",
volume = "25",
pages = "553--560",
journal = "Journal of Biogeography",
issn = "0305-0270",
publisher = "Wiley-Blackwell",
number = "3",

}

TY - JOUR

T1 - The latitudinal gradient of species diversity among North American grasshoppers (Acrididae) within a single habitat

T2 - A test of the spatial heterogeneity hypothesis

AU - Davidowitz, Goggy

AU - Rosenzweig, Michael L

PY - 1998/5

Y1 - 1998/5

N2 - The spatial heterogeneity hypothesis predicts a positive relationship between habitat complexity and species diversity: the greater the heterogeneity of a habitat, the greater the number of species in that habitat. On a regional scale, this hypothesis has been proposed to explain the increase in species diversity from the poles to the tropics: the tropics are more diverse because they contain more habitats. On the local scale, the spatial heterogeneity hypothesis suggests that the tropics are more diverse because they contain more microhabitats. The positive relationship between habitat heterogeneity and species diversity, on the local scale, is well documented. In this paper, we test whether habitat heterogeneity on the local scale can explain the latitudinal gradient of species diversity on the regional scale. We determined the latitudinal gradient of species diversity of 305 species of North American grasshoppers using published distribution maps. We compared the slope of this multihabitat (regional-scale) gradient with the slope of a withinhabitat (local-scale) gradient in the prairie grasslands. Our results show no significant difference between the slopes at the two scales. We tested the generality of our results by comparing multi- and within-habitat latitudinal gradients of species diversity for ants, scorpions and mammals using data from the literature. These results are in accordance with those from grasshoppers. We can therefore reject the local-scale spatial heterogeneity hypothesis as a mechanism explaining the regional-scale latitudinal gradient of species diversity. We discuss alternative mechanisms that produce this gradient.

AB - The spatial heterogeneity hypothesis predicts a positive relationship between habitat complexity and species diversity: the greater the heterogeneity of a habitat, the greater the number of species in that habitat. On a regional scale, this hypothesis has been proposed to explain the increase in species diversity from the poles to the tropics: the tropics are more diverse because they contain more habitats. On the local scale, the spatial heterogeneity hypothesis suggests that the tropics are more diverse because they contain more microhabitats. The positive relationship between habitat heterogeneity and species diversity, on the local scale, is well documented. In this paper, we test whether habitat heterogeneity on the local scale can explain the latitudinal gradient of species diversity on the regional scale. We determined the latitudinal gradient of species diversity of 305 species of North American grasshoppers using published distribution maps. We compared the slope of this multihabitat (regional-scale) gradient with the slope of a withinhabitat (local-scale) gradient in the prairie grasslands. Our results show no significant difference between the slopes at the two scales. We tested the generality of our results by comparing multi- and within-habitat latitudinal gradients of species diversity for ants, scorpions and mammals using data from the literature. These results are in accordance with those from grasshoppers. We can therefore reject the local-scale spatial heterogeneity hypothesis as a mechanism explaining the regional-scale latitudinal gradient of species diversity. We discuss alternative mechanisms that produce this gradient.

KW - Acrididae

KW - Grasshopper

KW - Latitudinal diversity gradient

KW - Spatial heterogeneity hypothesis

KW - Species diversity

UR - http://www.scopus.com/inward/record.url?scp=0031751129&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031751129&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0031751129

VL - 25

SP - 553

EP - 560

JO - Journal of Biogeography

JF - Journal of Biogeography

SN - 0305-0270

IS - 3

ER -