Effects of woodlot isolation on the dispersion of plants with fleshy fruits

Effects of woodlot isolation on the dispersion of plants with fleshy fruits By relating species presence, number and density to the perimeter and isolation of small (0.1–2.75 ha) homogeneous woodlots (n = 43), indications were obtained that some fleshy‐fruited species are negatively affected by woodlot isolation. The number of fruit‐bearing herbaceous perennial species increased with woodlot area, probably because of the increasing heterogeneity of the herb layer. The density of individuals of the investigated species were negatively correlated to woodlot area. There were also some indications thatthe presence/absence of species was related to the length of the forest edge (e.g. Hederá helix). Because woodlot area and shape index were strongly correlated, the effects of increased forest area and forest edge were hard to separate. The probability of occurrence of Lonicera periclymenum and the density oí Ilex aquifolium decreased with an increasing degree of isolation of present forest islands. The chance of occurrence of L. periclymenum decreased also with the degree of isolation in the past, measured from topographical maps of about 60 yr ago. The total area of broad‐leaved forest within a radius of 500 m, as well as the distance to the nearest connecting landscape element, seem to be good indicators of woodlot isolation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Vegetation Science Wiley

Effects of woodlot isolation on the dispersion of plants with fleshy fruits

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Publisher
Wiley
Copyright
1991 IAVS ‐ the International Association of Vegetation Science
ISSN
1100-9233
eISSN
1654-1103
DOI
10.2307/3235930
Publisher site
See Article on Publisher Site

Abstract

By relating species presence, number and density to the perimeter and isolation of small (0.1–2.75 ha) homogeneous woodlots (n = 43), indications were obtained that some fleshy‐fruited species are negatively affected by woodlot isolation. The number of fruit‐bearing herbaceous perennial species increased with woodlot area, probably because of the increasing heterogeneity of the herb layer. The density of individuals of the investigated species were negatively correlated to woodlot area. There were also some indications thatthe presence/absence of species was related to the length of the forest edge (e.g. Hederá helix). Because woodlot area and shape index were strongly correlated, the effects of increased forest area and forest edge were hard to separate. The probability of occurrence of Lonicera periclymenum and the density oí Ilex aquifolium decreased with an increasing degree of isolation of present forest islands. The chance of occurrence of L. periclymenum decreased also with the degree of isolation in the past, measured from topographical maps of about 60 yr ago. The total area of broad‐leaved forest within a radius of 500 m, as well as the distance to the nearest connecting landscape element, seem to be good indicators of woodlot isolation.

Journal

Journal of Vegetation ScienceWiley

Published: Jun 1, 1991

References

  • Vegetation differentiation and secondary succession on a limestone hill in southern Poland
    Dzwonko, Dzwonko; Loster, Loster
  • The structural complexity of old field vegetation and the recruitment of bird‐dispersed plant species
    McDonnell, McDonnell; Stiles, Stiles

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