Human activities can hinder the breeding of a top avian predator: preliminary results

The Eastern Imperial Eagle (EIE) is a large-sized, globally threatened species with a wide distribution. The species is extremely vulnerable and sensitive to human disturbance and activities in the vicinities of its nests. We analyzed the effect of human disturbance in two territories of Eastern Imp...

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Autores principales:	Dobrev Dobromir, Dobrev Vladimir, Demerdzhiev Dimitar
Formato:	article
Lenguaje:	EN
Publicado:	Sciendo 2021
Materias:	eastern imperial eagle bulgaria disturbance breeding alteration population Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/b556e6ce7d7340b78ef118ad384b058d
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id	oai:doaj.org-article:b556e6ce7d7340b78ef118ad384b058d
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spelling	oai:doaj.org-article:b556e6ce7d7340b78ef118ad384b058d2021-12-05T14:11:09ZHuman activities can hinder the breeding of a top avian predator: preliminary results2061-958810.2478/orhu-2021-0020https://doaj.org/article/b556e6ce7d7340b78ef118ad384b058d2021-12-01T00:00:00Zhttps://doi.org/10.2478/orhu-2021-0020https://doaj.org/toc/2061-9588The Eastern Imperial Eagle (EIE) is a large-sized, globally threatened species with a wide distribution. The species is extremely vulnerable and sensitive to human disturbance and activities in the vicinities of its nests. We analyzed the effect of human disturbance in two territories of Eastern Imperial Eagles from Bulgaria in 2008–2009. We recorded 375 cases of different types of human activity in the vicinities of the two surveyed nests – 60 cases in nest A and 315 in nest B. The most common activity around the studied nests was the passing of light motor vehicles (n=100 cases). Our results highlight that the probability of EIE’s reaction is dependent on the type of activity, distance from the nest and the duration of the activity. However, eagles’ reaction is independent from the number of intruders. We found that with the decrease of the distance to the nest, the reaction progresses and is more acute. We found statistical differences between the distance belts and the majority of alert and flight reactions that were recorded at distances up to 300 m from the nests. We reported that humans walking around nests (mainly hunters, fishermen, tourists, people illegally extracting sand in the close vicinities of the nests) result in a large number of reactions of flight off by the eagles thus, leaving the nest unattended. More research on a large scale on this topic is needed including more accurate measures to address human disturbance in EIE territories. The findings will be applied to ensure higher breeding rates and species conservation.Dobrev DobromirDobrev VladimirDemerdzhiev DimitarSciendoarticleeastern imperial eaglebulgariadisturbancebreedingalterationpopulationEcologyQH540-549.5ENOrnis Hungarica, Vol 29, Iss 2, Pp 71-80 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	eastern imperial eagle bulgaria disturbance breeding alteration population Ecology QH540-549.5
spellingShingle	eastern imperial eagle bulgaria disturbance breeding alteration population Ecology QH540-549.5 Dobrev Dobromir Dobrev Vladimir Demerdzhiev Dimitar Human activities can hinder the breeding of a top avian predator: preliminary results
description	The Eastern Imperial Eagle (EIE) is a large-sized, globally threatened species with a wide distribution. The species is extremely vulnerable and sensitive to human disturbance and activities in the vicinities of its nests. We analyzed the effect of human disturbance in two territories of Eastern Imperial Eagles from Bulgaria in 2008–2009. We recorded 375 cases of different types of human activity in the vicinities of the two surveyed nests – 60 cases in nest A and 315 in nest B. The most common activity around the studied nests was the passing of light motor vehicles (n=100 cases). Our results highlight that the probability of EIE’s reaction is dependent on the type of activity, distance from the nest and the duration of the activity. However, eagles’ reaction is independent from the number of intruders. We found that with the decrease of the distance to the nest, the reaction progresses and is more acute. We found statistical differences between the distance belts and the majority of alert and flight reactions that were recorded at distances up to 300 m from the nests. We reported that humans walking around nests (mainly hunters, fishermen, tourists, people illegally extracting sand in the close vicinities of the nests) result in a large number of reactions of flight off by the eagles thus, leaving the nest unattended. More research on a large scale on this topic is needed including more accurate measures to address human disturbance in EIE territories. The findings will be applied to ensure higher breeding rates and species conservation.
format	article
author	Dobrev Dobromir Dobrev Vladimir Demerdzhiev Dimitar
author_facet	Dobrev Dobromir Dobrev Vladimir Demerdzhiev Dimitar
author_sort	Dobrev Dobromir
title	Human activities can hinder the breeding of a top avian predator: preliminary results
title_short	Human activities can hinder the breeding of a top avian predator: preliminary results
title_full	Human activities can hinder the breeding of a top avian predator: preliminary results
title_fullStr	Human activities can hinder the breeding of a top avian predator: preliminary results
title_full_unstemmed	Human activities can hinder the breeding of a top avian predator: preliminary results
title_sort	human activities can hinder the breeding of a top avian predator: preliminary results
publisher	Sciendo
publishDate	2021
url	https://doaj.org/article/b556e6ce7d7340b78ef118ad384b058d
work_keys_str_mv	AT dobrevdobromir humanactivitiescanhinderthebreedingofatopavianpredatorpreliminaryresults AT dobrevvladimir humanactivitiescanhinderthebreedingofatopavianpredatorpreliminaryresults AT demerdzhievdimitar humanactivitiescanhinderthebreedingofatopavianpredatorpreliminaryresults
_version_	1718371317642690560

Human activities can hinder the breeding of a top avian predator: preliminary results

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