Document


Title

Determinants of plant distribution
Document Type: Journal Article
Author(s): D. M. Richardson; W. J. Bond
Publication Year: 1991

Cataloging Information

Keyword(s):
  • agriculture
  • Asia
  • Australia
  • bibliographies
  • biogeography
  • browse
  • Canada
  • Central America
  • climate change
  • community ecology
  • competition
  • cones
  • cover
  • cutting
  • deforestation
  • distribution
  • disturbance
  • dominance (ecology)
  • droughts
  • ecosystem dynamics
  • elevation
  • erosion
  • Europe
  • fire regimes
  • fire suppression
  • fynbos
  • grasslands
  • grazing
  • ground cover
  • herbaceous vegetation
  • herbicides
  • herbivory
  • invasive species
  • land management
  • logging
  • Mediterranean habitats
  • Mexico
  • moisture
  • New Zealand
  • Pinaceae
  • pine
  • Pinus
  • plant communities
  • plant diseases
  • plant growth
  • population density
  • population ecology
  • precipitation
  • regeneration
  • seed dispersal
  • seedlings
  • serotiny
  • site treatments
  • soil erosion
  • soil moisture
  • soil nutrients
  • South Africa
  • South America
  • temperature
  • tropical forests
  • Vietnam
  • volcanoes
  • xeric soils
Record Maintained By:
Record Last Modified: June 1, 2018
FRAMES Record Number: 33710
Tall Timbers Record Number: 7882
TTRS Location Status: In-file
TTRS Call Number: Journals-A
TTRS Abstract Status: Okay, Fair use, Reproduced by permission

This bibliographic record was either created or modified by the Tall Timbers Research Station and Land Conservancy and is provided without charge to promote research and education in Fire Ecology. The E.V. Komarek Fire Ecology Database is the intellectual property of the Tall Timbers Research Station and Land Conservancy.

Description

The question of which factors limit the occurrence of a plant species to a particular site is addressed by considering 53 cases in which the distribution of pines (Pinus species: Pinaceae) has changed in the last century. We consider expansions of pines in and adjacent to their natural ranges in the Northern Hemisphere and the spread from sites of introduction in the Southern Hemisphere well outside the contemporary range of pines. We first consider a neutral hypothesis (with respect to climate or biological interactions as determinants of invasion): invasion simply requires that a species is present in sufficient numbers, with sufficient propagules over sufficient time to invade. We then explore the relative importance of climatic changes, disturbance, competition (including competition between seedlings and herbaceous plants during early establishment), herbivory, pathogens, and other agents that might influence pine membership in communities. Determinants of susceptibility to invasion often interact in a complex fashion. Environmental stresses created by moisture and temperature appear to excerise primary control on invasibility at xeric and high-elevation sites, respectively, but play a smaller role at intermediate locations. At these sites, range limits are determined principally by interactions between pine seedlings and the resident biota in adjacent communities. This suggests that the effects of predicted global warming on the distribution of pines are unlikely to be simple functions of temperature or precipitation, except at climatic extremes. Pine invasions are most prevalent where there is limited competition in the regeneratin niche and occur more easily in habitats where the dominant growth form is most different from that of pines, namely, in grasslands. The disturbance regime in the receiving habitat is important and interacts directly and indirectly with the 'inherent' susceptibility to invasion. Severe disturbances may initiate pine invasions at any latitude, but are essential for reducing the cover of vigorous plant growth (and hence competition in the regeneration niche) in tropical and near-tropical regions. Contemporary practices such as deforestation and increased grazing pressure and those practices leading to accelerated erosion, modified fire regimes, and climate amelioration essentially duplicate ice-age stresses and distrubances that shaped plant communities in the Holocene. The fundamental role of biotic factors (either direct or indirect) in regulating the distribution of pines in discussed with reference to aspects of land husbandry including the management of biological invasions. [Summary of 53 pine case studies are summarized in Table A1.] © 1991 by The University of Chicago. Published for the American Society of Naturalists. Abstract reproduced by permission of The University of Chicago Press.

Online Link(s):
Citation:
Richardson, D. M., and W. J. Bond. 1991. Determinants of plant distribution. American Naturalist, v. 137, no. 5, p. 639-668.