To breed or not to breed: Territory occupancy is predicted by reproductive performance and habitat heterogeneity DOI Creative Commons
Andrés López‐Peinado, Navinder J. Singh, Vicente Uríos

et al.

Ecological Applications, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 10, 2024

Abstract Species life history and anthropogenic influence are important drivers of population performance viability in human‐dominated ecosystems. How these factors affect habitat selection occupancy long‐lived species is an topic for their conservation. Long‐term datasets needed establishing the underlying this process. In 22 year‐long study, we conducted annual surveys Bonelli's eagle east Iberian Peninsula. During period, 42.8% known territories remained unoccupied. Territories with a higher likelihood raising two chicks over time were stable, evidenced by lower coefficient variation productivity, more likely to remain occupied. Moreover, diversity, dominated coniferous forest or agricultural fields, those located further away from coast at altitudes showed rates (i.e., unoccupied >3 consecutive years). To validate associations, monitored space use individuals equipped Global Positioning System/Global System Mobile (GPS/GSM) transmitters, which confirmed that eagles selected open habitats (mainly scrublands transitional woodland‐scrubs) intermixed areas within home ranges. contrast, avoided agricultural, urban, continuous forests breeding line observations territories. Our results highlight interplay between natural factors, also have implications other raptor species. Preservation most productive re‐occupancy along reducing threats preferred fundamental actions should be taken immediately sustain viable populations. Potential management include enhancing prey density through restoration conservation, mitigating mortality risks due power lines, fences, poisoning, maintaining heterogeneity eagles' hunting activities.

Language: Английский

Behavioural responses of Bonelli's eagles to human disturbances: Assessing the effect on reproduction and suggested mitigating measures DOI Creative Commons
José E. Martínez, Íñigo Zuberogoitia, José F. Calvo

et al.

People and Nature, Journal Year: 2025, Volume and Issue: unknown

Published: April 17, 2025

Abstract There has been increasing recognition of the adverse effects outdoor recreation on behavioural ecology, breeding success and ultimate abandonment territories in several raptor species, such as Bonelli's Eagle ( Aquila fasciata ). We assessed human activities behaviour eagles south‐eastern Spain, using a 14‐year long‐term data set. Our results showed weak response to activities. The probability eagle reaction varied among increased when they occurred close nest, being most marked for ecotourism In general, bird reacting sharply an activity closer than 480 m from but reactions were negligible 1000 away. Ecotourists only affected at distances <300 nest. found negative relationship between behaviour: decreased with frequency activities, suggesting degree habituation. Breeding did not vary pair's experience disturbance, nor periods before, during after COVID‐19 lockdown increase indicated that can develop tolerance nesting season. This plasticity offers opportunity harmonize anthropogenic application specific conservation measures this species humanized landscapes. findings led suggestions minimize detrimental optimize management Southeastern Spain. More generally, our study emphasises value ecology studies guiding conservation.

Language: Английский

Citations

0
To breed or not to breed: Territory occupancy is predicted by reproductive performance and habitat heterogeneity DOI Creative Commons
Andrés López‐Peinado, Navinder J. Singh, Vicente Uríos

et al.

Ecological Applications, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 10, 2024

Abstract Species life history and anthropogenic influence are important drivers of population performance viability in human‐dominated ecosystems. How these factors affect habitat selection occupancy long‐lived species is an topic for their conservation. Long‐term datasets needed establishing the underlying this process. In 22 year‐long study, we conducted annual surveys Bonelli's eagle east Iberian Peninsula. During period, 42.8% known territories remained unoccupied. Territories with a higher likelihood raising two chicks over time were stable, evidenced by lower coefficient variation productivity, more likely to remain occupied. Moreover, diversity, dominated coniferous forest or agricultural fields, those located further away from coast at altitudes showed rates (i.e., unoccupied >3 consecutive years). To validate associations, monitored space use individuals equipped Global Positioning System/Global System Mobile (GPS/GSM) transmitters, which confirmed that eagles selected open habitats (mainly scrublands transitional woodland‐scrubs) intermixed areas within home ranges. contrast, avoided agricultural, urban, continuous forests breeding line observations territories. Our results highlight interplay between natural factors, also have implications other raptor species. Preservation most productive re‐occupancy along reducing threats preferred fundamental actions should be taken immediately sustain viable populations. Potential management include enhancing prey density through restoration conservation, mitigating mortality risks due power lines, fences, poisoning, maintaining heterogeneity eagles' hunting activities.

Language: Английский

Citations

0