Data from: Multidimensional differentiation in foraging resource use during breeding of two sympatric raptors: space, habitat type, time and food
Data from: Multidimensional differentiation in foraging resource use during breeding of two sympatric raptors: space, habitat type, time and food
No Thumbnail Available
Date
2016-10-18
Citation
Friedemann G, Leshem Y, Izhaki I. 2016. Data from: Multidimensional differentiation in foraging resource use during breeding of two sympatric raptors: space, habitat type, time and food. Movebank Data Repository. https://doi.org/10.5441/001/1.c6q8353qAbstract
Ecologically-similar species were found to develop specific strategies to partition their resources, leading to niche differentiation and divergence, in order to avoid interspecific competition. Our study determines multi-dimensional differentiation of two sympatric top-predators, long-legged buzzards (LLB) and short-toed eagles (STE), which recently became sympatric during their breeding season in the Judean Foothills, Israel. By combining information from comprehensive diet and movement analyses we found four dimensions of differentiation: (1) Geographic foraging area: LLB tended to forage relatively close to their nests (2.35 ± 0.62 km), while STE forage far from their nest (13.03 ± 2.20 km); (2) Foraging-habitat type: LLBs forage at low natural vegetation, avoiding cultivated fields, whereas STEs forage in cultivated fields, avoiding low natural vegetation; (3) Diurnal dynamics of foraging: LLBs are uniformly active during daytime, whereas STEs activity peaks in the early afternoon; and (4) Food-niche: while both species largely rely on reptiles (47.8% and 76.3% for LLB and STE, respectively), LLB had a more diverse diet and consumed significantly higher percentages of lizards, while STE consumed significantly higher percentages of snakes. Our results suggest that this multidimensional differentiation allows the spatial coexistence of these two dense populations in the study area.
Keywords
Buteo rufinus,Circaetus gallicus,Circaetus gallicus,diel,ecological release,flight corridors,food niche differentiation,foraging area,GPS tags,habitat differentiation,interspecific competition,long-legged buzzard,remote sensing,short-toed eagle,spatial segregation
DOIs of related Publications
BibTex
@misc{001/1_c6q8353q,
title = {Data from: Multidimensional differentiation in foraging resource use during breeding of two sympatric raptors: space, habitat type, time and food},
author = {Friedemann, G and Leshem, Y and Izhaki, I},
year = {2016},
URL = {http://dx.doi.org/10.5441/001/1.c6q8353q},
doi = {doi:10.5441/001/1.c6q8353q},
publisher = {Movebank data repository}
}RIS
TY - DATA ID - doi:10.5441/001/1.c6q8353q T1 - Data from: Multidimensional differentiation in foraging resource use during breeding of two sympatric raptors: space, habitat type, time and food AU - Friedemann, Guilad AU - Leshem, Yossi AU - Izhaki, Ido Y1 - 2016/10/18 KW - Buteo rufinus KW - Buteo rufinus KW - Circaetus gallicus KW - Circaetus gallicus KW - diel KW - ecological release KW - flight corridors KW - food niche differentiation KW - foraging area KW - GPS tags KW - habitat differentiation KW - interspecific competition KW - long-legged buzzard KW - remote sensing KW - short-toed eagle KW - spatial segregation KW - Buteo rufinus KW - Circaetus gallicus PB - Movebank data repository UR - http://dx.doi.org/10.5441/001/1.c6q8353q DO - doi:10.5441/001/1.c6q8353q ER -