Monitoring of some species of colonial nesting Ardeidae at Lake Trasimeno (Central Italy).

During 1993-2010 we have monitored at Lake Trasimeno the population of colonial nesting herons, with the exception of Ardea purpurea. Two distinct heronries have been found, placed 9 km away from each other and composed of the following species: Nycticorax nycticorax, Ardeola ralloides, Bubulcus ibi...

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Main Authors: Francesco Velatta, Mario Muzzatti, Monica Montefameglio, Maria Maddalena Chiappini
Format: Article
Language:English
Published: PAGEPress Publications 2012-05-01
Series:Rivista Italiana di Ornitologia - Research in Ornithology
Subjects:
Online Access:https://sisn.pagepress.org/index.php/rio/article/view/96
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author Francesco Velatta
Mario Muzzatti
Monica Montefameglio
Maria Maddalena Chiappini
author_facet Francesco Velatta
Mario Muzzatti
Monica Montefameglio
Maria Maddalena Chiappini
author_sort Francesco Velatta
collection DOAJ
description During 1993-2010 we have monitored at Lake Trasimeno the population of colonial nesting herons, with the exception of Ardea purpurea. Two distinct heronries have been found, placed 9 km away from each other and composed of the following species: Nycticorax nycticorax, Ardeola ralloides, Bubulcus ibis, Egretta garzetta, Ardea cinerea, Casmerodius albus (the last perhaps not breeding). We have usually carried out a total census of the nests and assessed the proportions of the different heron species on a sample of visible adults. Nycticorax nycticorax and Ardeola ralloides have decreased, whilst Ardea cinerea and Bubulcus ibis have shown positive trends. The cumulated breeding population has shown a strong decrease, followed by a recovery. The population size of the last year (298 pairs) is of great importance in Central Italy, accounting for 10% of the heron population of the whole region.
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spelling doaj.art-95c59abefc4f431ea25a83af14f5afb62022-12-22T01:48:48ZengPAGEPress PublicationsRivista Italiana di Ornitologia - Research in Ornithology0035-68752385-08332012-05-0180210.4081/rio.2010.96Monitoring of some species of colonial nesting Ardeidae at Lake Trasimeno (Central Italy).Francesco Velatta0Mario Muzzatti1Monica Montefameglio2Maria Maddalena Chiappini3Provincia di Perugia, Area Ambiente e Territorio, PerugiaOasi Naturalistica “La Valle”, Via dell’Emissario, San Savino, Magione, PerugiaProvincia di Perugia, Area Ambiente e Territorio, PerugiaOasi Naturalistica “La Valle”, Via dell’Emissario, San Savino, Magione, PerugiaDuring 1993-2010 we have monitored at Lake Trasimeno the population of colonial nesting herons, with the exception of Ardea purpurea. Two distinct heronries have been found, placed 9 km away from each other and composed of the following species: Nycticorax nycticorax, Ardeola ralloides, Bubulcus ibis, Egretta garzetta, Ardea cinerea, Casmerodius albus (the last perhaps not breeding). We have usually carried out a total census of the nests and assessed the proportions of the different heron species on a sample of visible adults. Nycticorax nycticorax and Ardeola ralloides have decreased, whilst Ardea cinerea and Bubulcus ibis have shown positive trends. The cumulated breeding population has shown a strong decrease, followed by a recovery. The population size of the last year (298 pairs) is of great importance in Central Italy, accounting for 10% of the heron population of the whole region.https://sisn.pagepress.org/index.php/rio/article/view/96ArdeidaeheronriesLake TrasimenoCentral Italy.
spellingShingle Francesco Velatta
Mario Muzzatti
Monica Montefameglio
Maria Maddalena Chiappini
Monitoring of some species of colonial nesting Ardeidae at Lake Trasimeno (Central Italy).
Rivista Italiana di Ornitologia - Research in Ornithology
Ardeidae
heronries
Lake Trasimeno
Central Italy.
title Monitoring of some species of colonial nesting Ardeidae at Lake Trasimeno (Central Italy).
title_full Monitoring of some species of colonial nesting Ardeidae at Lake Trasimeno (Central Italy).
title_fullStr Monitoring of some species of colonial nesting Ardeidae at Lake Trasimeno (Central Italy).
title_full_unstemmed Monitoring of some species of colonial nesting Ardeidae at Lake Trasimeno (Central Italy).
title_short Monitoring of some species of colonial nesting Ardeidae at Lake Trasimeno (Central Italy).
title_sort monitoring of some species of colonial nesting ardeidae at lake trasimeno central italy
topic Ardeidae
heronries
Lake Trasimeno
Central Italy.
url https://sisn.pagepress.org/index.php/rio/article/view/96
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