Selection of Nest Trees by Cavity-nesting Birds in the Neotropical Atlantic Forest

被引:85
作者
Cockle, Kristina [1 ,2 ,3 ]
Martin, Kathy [1 ,4 ]
Wiebe, Karen [5 ]
机构
[1] Univ British Columbia, Fac Forestry, Ctr Appl Conservat Res, 2424 Main Mall, Vancouver, BC V6T 1Z4, Canada
[2] Proyecto Selva Pino Parana, RA-3352 San Pedro, Misiones, Argentina
[3] Univ Maimonides, Dept Ciencias Nat & Antropol, Fdn Hist Nat Felix Azara, Buenos Aires, DF, Argentina
[4] Environm Canada, Delta, BC V4K 3N2, Canada
[5] Univ Saskatchewan, Dept Biol, Saskatoon, SK S7N 5E2, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
logging; nest-site selection; parrot; secondary cavity-nester; South America; subtropical forest; tree cavity; tree hollow; JARRAH EUCALYPTUS-MARGINATA; CORYMBIA-CALOPHYLLA TREES; HOLLOW-BEARING TREES; MONTANE ASH FORESTS; SITE SELECTION; ARBOREAL MARSUPIALS; SOUTHEAST AUSTRALIA; CENTRAL HIGHLANDS; VERTEBRATE FAUNA; SCATTERED TREES;
D O I
10.1111/j.1744-7429.2010.00661.x
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
One of the five most important global biodiversity hotspots, the Neotropical Atlantic forest supports a diverse community of birds that nest in tree cavities. Cavity-nesting birds may be particularly sensitive to forestry and agricultural practices that remove potential nest trees; however, there have been few efforts to determine what constitutes a potential nest tree in Neotropical forests. We aimed to determine the characteristics of trees and cavities used in nesting by excavators (species that excavate their own nest cavity) and secondary cavity-nesters (species that rely on existing cavities), and to identify the characteristics of trees most likely to contain suitable cavities in the Atlantic forest of Argentina. We used univariate analyses and conditional logistic regression models to compare characteristics of nest trees paired with unused trees found over three breeding seasons (2006-2008). Excavators selected dead or unhealthy trees. Secondary cavity-nesters primarily selected cavities that were deep and high on the tree, using live and dead cavity-bearing trees in proportion to their availability. Nonexcavated cavities suitable for birds occurred primarily in live trees. They were most likely to develop in large-diameter trees, especially grapia Apuleia leiocarpa and trees in co-dominant or suppressed crown classes. To conserve cavity-nesting birds of the Atlantic forest, we recommend a combination of policies, economic assistance, environmental education, and technical support for forest managers and small-scale farmers, to maintain large healthy and unhealthy trees in commercial logging operations and on farms. Abstract in Spanish is available at (c) 2010 The Author(s).
引用
收藏
页码:228 / 236
页数:9
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