Use this url to cite publication: https://hdl.handle.net/20.500.12259/102699
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Early successional bird community based clear-cut size modelling
Type of publication
Tezės kitame recenzuojamame leidinyje / Theses in other peer-reviewed publication (T1e)
Author(s)
LT | ||
Pėtelytė-Brazaitienė, Rimgailė | LT | |
LT | ||
LT |
Title
Early successional bird community based clear-cut size modelling
Is part of
Brazilian journal of forestry research. Colombo : Embrapa Florestas, 2019, vol. 39, spec. iss
Date Issued
Date Issued |
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2019 |
Publisher
Colombo : Embrapa Florestas
Extent
p. 614-615
Field of Science
Abstract
We analyzed how local breeding bird communities are influenced by clear-cut spatial characteristics in hemi-boreal forest south-west Lithuania (54°24’- 55°11’N, 23°17’-24°35’E). Birds studied by mapping method, surveyed during breeding season from April 15th to June 15th. Inventory covered 146 clear-cuts, totally 546 ha. New bird species colonized and local community density decreased significantly while clear-cut areas reached 2 ha. Bird communities were almost stable in larger clear-cuts. We registered 55 bird species totally; 43 of them were sensitive to the minimum clear-cut size as habitat area. The size of minimum area up to 0.5 ha were typical for 18 bird species as well as 0.5-1.0 ha – 6 species; 1.1-2.0 ha – 9 species; 2.1-4.0 ha – 10 species. Increasing felled area proportion on landscape level affected positively the number of breeding bird species in clear-cut area. The highest density of bird communities was in landscapes of 11-35% felled area. Optimal shape coefficient of clear-cuts was 3.0-4.0 (for 1 ha area – 530-640 m of edge). For modeling optimal clear-cut size on landscape level we used real information on local bird communities. We compared bird community data from 100 ha clear-cut areas (clear-cuts of 0.5 ha v.s; 5.0 ha) and totally calculated: 18 vs; 43 inhabiting bird species and 950 vs; 650 bird pairs. Optimal clear-cut size distribution model must include various size clear-cuts in suggested proportions of (I) the number and/or (II) size. Forest types with dominating small-scale disturbance events can be based on equal size proportions as well as large-scale disturbance (e.g. fire) equal quantity of clear-cut proportions.
Type of document
type::text::conference output::conference proceedings::conference paper
Language
Anglų / English (en)
Coverage Spatial
Brazilija / Brazil (BR)
Description
XXV IUFRO World Congress: Forest Research and Cooperation for Sustainable Development, 29 sept - 5 October 2019, Curitiba, PR, Brazil: abstracts