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|Title: ||Landscape structure shapes carnivore-mediated seed dispersal kernels|
|Authors: ||Herrera, José|
Teixeira, Isa de Sá
|Keywords: ||Dispersal patterns|
|Issue Date: ||2016|
|Publisher: ||Landscape Ecology|
|Citation: ||Herrera, J.M.; Teixeira, I.D.; Rodriguez-Perez, J.; Mira, A. 2016. Landscape structure shapes carnivore-mediated seed dispersal kernels. Landscape Ecology, 31(4): 731-743.|
|Abstract: ||Context Seed dispersal is recognized as having profound effects on the distribution, dynamics and structure of plant populations and communities. However, knowledge of how landscape structure shapes carnivore-mediated seed dispersal patterns is
still scarce, thereby limiting our understanding of large-scale plant population processes.
Objectives We aim to determine how the amount
and spatial configuration of forest cover impacted the relative abundance of carnivorous mammals, and how these effects cascaded through the seed dispersal kernels they generated.
Methods Camera traps activated by animal movement were used for carnivore sampling. Colour-coded seed mimics embedded in common figs were used to know the exact origin of the dispersed seed mimics later found in carnivore scats. We applied this procedure in two sites differing in landscape structure.
Results We did not find between-site differences in the relative abundance of the principal carnivore species contributing to seed dispersal patterns, Martes foina. Mean dispersal distance and the probability of
long dispersal events were higher in the site with spatially continuous and abundant forest cover, compared to the site with spatially aggregated and scarcer forest cover. Seed deposition closely matched the
spatial patterning of forest cover in both study sites, suggesting behaviour-based mechanisms underpinning seed dispersal patterns generated by individual
Conclusions Our results provide the first empirical evidence of the impact of landscape structure on carnivore-mediated seed dispersal kernels. They also indicate that seed dispersal kernels generated strongly depend on the effect that landscape structure exerts on carnivore populations, particularly on habitat-use preferences.|
|Appears in Collections:||MED - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica|
BIO - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica
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