BECAS
VIVANCO Constanza Guadalupe
artículos
Título:
Exploring nest webs in more detail to improve forest management
Autor/es:
RUGGERA ROMAN; SCHAAF ALEJANDRO; VIVANCO, CONSTANZA; POLITI NATALIA; RIVERA LUIS
Revista:
FOREST ECOLOGY AND MANAGEMENT
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2016 vol. 372 p. 93 - 100
ISSN:
0378-1127
Resumen:
The interactions between birds that use tree cavities for breeding, roosting and sheltering have beennamed ?nest webs?. We applied for the first time in nest-web studies some tools developed in networktheory, in order to develop conservation and management recommendations of forest biodiversity. Werecorded 109 interactions between 15 bird and 11 cavity-bearing tree species, in a subtropical piedmontforest (PF) of northwestern Argentina. Bird species in this nest-web included four woodpecker species,whose cavities were scarcely (9%) used by non-excavator birds, such as parrots, owls, and woodcreepers.Based on the Importance and Strength indices the most important tree species were Calycophyllum multiflorum(Rubiaceae) and Anadenanthera colubrina (Fabaceae). The nest web contained three main interactionmodules: one composed by woodpeckers interacting with both living and standing dead trees;another by non-excavator birds using decay-formed cavities in living trees; and a third small module thathad a few birds using woodpecker-excavated cavities in living trees. Important tree species were differentfor woodpecker and non-excavator modules. Extinction simulation of the most important tree speciestripled the negative impact on cavity-using bird assemblage compared with the random extinction of treespecies. In logging operations special consideration should be taken to ensure the maintenance of keytree species for the conservation of all the nest-web components in PF.