The effect of intra- and interspecific interactions on the large-scale distribution of cliff-nesting raptors

Jose E. Martinez, Jose A. Martinez, Inigo Zuberogoitia, Jabi Zabala, Stephen M. Redpath, Jose F. Calvo

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

We examine the large-scale spatial distribution and the intra- and interspecific interactions in a cliff-nesting raptor community of a semi-arid Mediterranean area in southeastern Spain. The study community was composed of four top avian cliff-nesting predators: the Golden Eagle Aquila chrysaetos, the Bonelli's Eagle Hieraaetus fasciatus, the Eagle Owl Bubo bubo and the Peregrine Falco peregrinus. We tested the null hypothesis that their nest sites were distributed randomly within the study area, and built regression models as a function of the nearest neighbour distances (NNDs) among them. During a 15-year research period, we found a total of 560 traditional nest sites. Only those of A. chrysaetos showed regular spacing over the study area, while the distributions of the other three species did not differ significantly from random. Our modelling approach demonstrated that intraspecific NNDs were important only for the two largest species, A. chrysaetos and H. fasciatus, suggesting intraspecific territorial spacing for A. chrvsaetos, but a certain degree of spatial aggregation for H. fasciatus. In addition, the models suggested competitive interactions between these species. According to the relative importance of their interspecific NNDs, H. Asciatus appeared to be dominant over the smaller F peregrinus. Strong interspecific interactions were also suggested between B. bubo and E peregrinus. Intra-and interspecific relationships within the community followed a general pattern of dominance related to body mass. Notable exceptions were found especially for the interspecific interactions involving B. bubo, which may prey upon the other species.

Original languageEnglish
Pages (from-to)13-21
Number of pages9
JournalOrnis Fennica
Volume85
Publication statusPublished - 2008

Keywords

  • owl bubo-bubo
  • falcon falco-peregrinus
  • aquila-chrysaetos nests
  • habitat-selection
  • bonellis eagle
  • golden eagles
  • interference competition
  • conspecific attraction
  • territorial behavior
  • intraguild predation

Cite this

Martinez, J. E., Martinez, J. A., Zuberogoitia, I., Zabala, J., Redpath, S. M., & Calvo, J. F. (2008). The effect of intra- and interspecific interactions on the large-scale distribution of cliff-nesting raptors. Ornis Fennica, 85, 13-21.

The effect of intra- and interspecific interactions on the large-scale distribution of cliff-nesting raptors. / Martinez, Jose E.; Martinez, Jose A.; Zuberogoitia, Inigo; Zabala, Jabi; Redpath, Stephen M.; Calvo, Jose F.

In: Ornis Fennica, Vol. 85, 2008, p. 13-21.

Research output: Contribution to journalArticle

Martinez, JE, Martinez, JA, Zuberogoitia, I, Zabala, J, Redpath, SM & Calvo, JF 2008, 'The effect of intra- and interspecific interactions on the large-scale distribution of cliff-nesting raptors' Ornis Fennica, vol. 85, pp. 13-21.
Martinez, Jose E. ; Martinez, Jose A. ; Zuberogoitia, Inigo ; Zabala, Jabi ; Redpath, Stephen M. ; Calvo, Jose F. / The effect of intra- and interspecific interactions on the large-scale distribution of cliff-nesting raptors. In: Ornis Fennica. 2008 ; Vol. 85. pp. 13-21.
@article{6a9ac28bc0b44f5fbca3119c0862e947,
title = "The effect of intra- and interspecific interactions on the large-scale distribution of cliff-nesting raptors",
abstract = "We examine the large-scale spatial distribution and the intra- and interspecific interactions in a cliff-nesting raptor community of a semi-arid Mediterranean area in southeastern Spain. The study community was composed of four top avian cliff-nesting predators: the Golden Eagle Aquila chrysaetos, the Bonelli's Eagle Hieraaetus fasciatus, the Eagle Owl Bubo bubo and the Peregrine Falco peregrinus. We tested the null hypothesis that their nest sites were distributed randomly within the study area, and built regression models as a function of the nearest neighbour distances (NNDs) among them. During a 15-year research period, we found a total of 560 traditional nest sites. Only those of A. chrysaetos showed regular spacing over the study area, while the distributions of the other three species did not differ significantly from random. Our modelling approach demonstrated that intraspecific NNDs were important only for the two largest species, A. chrysaetos and H. fasciatus, suggesting intraspecific territorial spacing for A. chrvsaetos, but a certain degree of spatial aggregation for H. fasciatus. In addition, the models suggested competitive interactions between these species. According to the relative importance of their interspecific NNDs, H. Asciatus appeared to be dominant over the smaller F peregrinus. Strong interspecific interactions were also suggested between B. bubo and E peregrinus. Intra-and interspecific relationships within the community followed a general pattern of dominance related to body mass. Notable exceptions were found especially for the interspecific interactions involving B. bubo, which may prey upon the other species.",
keywords = "owl bubo-bubo, falcon falco-peregrinus, aquila-chrysaetos nests, habitat-selection, bonellis eagle, golden eagles, interference competition, conspecific attraction, territorial behavior, intraguild predation",
author = "Martinez, {Jose E.} and Martinez, {Jose A.} and Inigo Zuberogoitia and Jabi Zabala and Redpath, {Stephen M.} and Calvo, {Jose F.}",
year = "2008",
language = "English",
volume = "85",
pages = "13--21",
journal = "Ornis Fennica",
issn = "0030-5685",
publisher = "University of Helsinki",

}

TY - JOUR

T1 - The effect of intra- and interspecific interactions on the large-scale distribution of cliff-nesting raptors

AU - Martinez, Jose E.

AU - Martinez, Jose A.

AU - Zuberogoitia, Inigo

AU - Zabala, Jabi

AU - Redpath, Stephen M.

AU - Calvo, Jose F.

PY - 2008

Y1 - 2008

N2 - We examine the large-scale spatial distribution and the intra- and interspecific interactions in a cliff-nesting raptor community of a semi-arid Mediterranean area in southeastern Spain. The study community was composed of four top avian cliff-nesting predators: the Golden Eagle Aquila chrysaetos, the Bonelli's Eagle Hieraaetus fasciatus, the Eagle Owl Bubo bubo and the Peregrine Falco peregrinus. We tested the null hypothesis that their nest sites were distributed randomly within the study area, and built regression models as a function of the nearest neighbour distances (NNDs) among them. During a 15-year research period, we found a total of 560 traditional nest sites. Only those of A. chrysaetos showed regular spacing over the study area, while the distributions of the other three species did not differ significantly from random. Our modelling approach demonstrated that intraspecific NNDs were important only for the two largest species, A. chrysaetos and H. fasciatus, suggesting intraspecific territorial spacing for A. chrvsaetos, but a certain degree of spatial aggregation for H. fasciatus. In addition, the models suggested competitive interactions between these species. According to the relative importance of their interspecific NNDs, H. Asciatus appeared to be dominant over the smaller F peregrinus. Strong interspecific interactions were also suggested between B. bubo and E peregrinus. Intra-and interspecific relationships within the community followed a general pattern of dominance related to body mass. Notable exceptions were found especially for the interspecific interactions involving B. bubo, which may prey upon the other species.

AB - We examine the large-scale spatial distribution and the intra- and interspecific interactions in a cliff-nesting raptor community of a semi-arid Mediterranean area in southeastern Spain. The study community was composed of four top avian cliff-nesting predators: the Golden Eagle Aquila chrysaetos, the Bonelli's Eagle Hieraaetus fasciatus, the Eagle Owl Bubo bubo and the Peregrine Falco peregrinus. We tested the null hypothesis that their nest sites were distributed randomly within the study area, and built regression models as a function of the nearest neighbour distances (NNDs) among them. During a 15-year research period, we found a total of 560 traditional nest sites. Only those of A. chrysaetos showed regular spacing over the study area, while the distributions of the other three species did not differ significantly from random. Our modelling approach demonstrated that intraspecific NNDs were important only for the two largest species, A. chrysaetos and H. fasciatus, suggesting intraspecific territorial spacing for A. chrvsaetos, but a certain degree of spatial aggregation for H. fasciatus. In addition, the models suggested competitive interactions between these species. According to the relative importance of their interspecific NNDs, H. Asciatus appeared to be dominant over the smaller F peregrinus. Strong interspecific interactions were also suggested between B. bubo and E peregrinus. Intra-and interspecific relationships within the community followed a general pattern of dominance related to body mass. Notable exceptions were found especially for the interspecific interactions involving B. bubo, which may prey upon the other species.

KW - owl bubo-bubo

KW - falcon falco-peregrinus

KW - aquila-chrysaetos nests

KW - habitat-selection

KW - bonellis eagle

KW - golden eagles

KW - interference competition

KW - conspecific attraction

KW - territorial behavior

KW - intraguild predation

M3 - Article

VL - 85

SP - 13

EP - 21

JO - Ornis Fennica

JF - Ornis Fennica

SN - 0030-5685

ER -