TY - JOUR
T1 - Foraging behavioural traits of tropical insectivorous birds lead to dissimilar communities in contrasting forest habitats
AU - Castaño-Villa, Gabriel J.
AU - Santisteban-Arenas, Rafael
AU - Hoyos-Jaramillo, Alejandro
AU - Estévez-Varón, Jaime V.
AU - Fontúrbel, Francisco E.
N1 - Publisher Copyright:
© 2019 The Authors.
PY - 2019
Y1 - 2019
N2 - Many deforested areas worldwide have been planted with Alnus spp. to protect watersheds and soils. However, the effects of these plantations on biodiversity are little known yet. Contrasting forest types may impose strong environmental filters to some behavioural traits, leading to dissimilar communities. Insectivorous birds are known to be sensitive to changes in habitat structure due to their specialized foraging behaviour. We contrasted species richness, abundance and composition of insectivorous birds, according to functional behaviour groups (foraging strategy and stratum), between secondary forest stands and Andean alder Alnus acuminata plantations, to assess how contrasting forest types affect this bird group in the Colombian Andes. Insectivorous bird species richness and abundance were higher at the Alder plantation rather than at the secondary forest, resulting in dissimilar communities. In this regard, forest plantations act as a positive filter for foliage gleaners and flycatchers, whereas secondary forests act as a positive filter for bark foragers. Secondary forests and alder plantations impose different ecological scenarios to insectivorous birds, related to foraging strategies and foraging stratum, which ultimately leads to a dissimilar species composition.
AB - Many deforested areas worldwide have been planted with Alnus spp. to protect watersheds and soils. However, the effects of these plantations on biodiversity are little known yet. Contrasting forest types may impose strong environmental filters to some behavioural traits, leading to dissimilar communities. Insectivorous birds are known to be sensitive to changes in habitat structure due to their specialized foraging behaviour. We contrasted species richness, abundance and composition of insectivorous birds, according to functional behaviour groups (foraging strategy and stratum), between secondary forest stands and Andean alder Alnus acuminata plantations, to assess how contrasting forest types affect this bird group in the Colombian Andes. Insectivorous bird species richness and abundance were higher at the Alder plantation rather than at the secondary forest, resulting in dissimilar communities. In this regard, forest plantations act as a positive filter for foliage gleaners and flycatchers, whereas secondary forests act as a positive filter for bark foragers. Secondary forests and alder plantations impose different ecological scenarios to insectivorous birds, related to foraging strategies and foraging stratum, which ultimately leads to a dissimilar species composition.
KW - Alnus acuminate
KW - Colombian Andes
KW - community similarity
KW - foraging strategy
KW - foraging stratum
KW - understory height
UR - http://www.scopus.com/inward/record.url?scp=85091224984&partnerID=8YFLogxK
U2 - 10.2981/wlb.00483
DO - 10.2981/wlb.00483
M3 - Article
AN - SCOPUS:85091224984
SN - 0909-6396
VL - 2019
JO - Wildlife Biology
JF - Wildlife Biology
IS - 1
M1 - wlb.00483
ER -