Academic Journal
Effects of cold winters and roost site stability on population development of non-native Asian ring-necked parakeets (Alexandrinus manillensis) in temperate Central Europe – Results of a 16-year census
| العنوان: | Effects of cold winters and roost site stability on population development of non-native Asian ring-necked parakeets (Alexandrinus manillensis) in temperate Central Europe – Results of a 16-year census |
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| المؤلفون: | Braun, Michael P., Braun, Nicole, Franz, Detlev, Groß, Bernadette, Dreyer, Wolfgang, Laucht, Silke, Kragten, Steven, Pârâu, Liviu G, Koch, Esther, Stiels, Darius, Schidelko, Kathrin, Nekum, Sven, Walter, Claus, Romero, Jana, Kemper, Achim, Hubatsch, Markus, Krause, Tobias, Bruslund, Simon, Bruslund, Nicole, Reinke-Beck, Mirjam I, Bauer, Andreas, Kremer, Phillip, Braun, Markus S, Sauer-Gürth, Hedwig, Wink, Michael |
| المصدر: | European Journal of Ecology; Vol. 4 No. 2 (2018); 49-55 ; 1339-8474 |
| بيانات النشر: | University of Kansas Libraries |
| سنة النشر: | 2018 |
| المجموعة: | The University of Kansas: Journals@KU |
| مصطلحات موضوعية: | invasive alien species, birds, population trends, weather conditions, climate change |
| الوصف: | Asian ring-necked parakeets (Alexandrinus manillensis, formerly Psittacula krameri, hereafter RNP) first bred inGermany in 1969. Since then, RNP numbers increased in all three major German subpopulations (Rhineland,Rhine-Main, Rhine-Neckar) over the period 2003–2018. In the Rhine-Neckar region, the population increased to more than fivefold within only 15 years. Interestingly, there was no significant breeding range expansion of RNP in the period 2010–2018. In 2018, the total number of RNP in Germany amounted to >16,200 birds. Differencesin RNP censuses between years were evident. Surprisingly, cold winters (extreme value, −13.7 °C) andcold weather conditions in the breeding season (coldest month average, −1.36 °C) were not able to explainbetween-year variation. This finding suggests that in general winter mortality is low – with exceptions for winters2008/2009 and 2009/2010, and a population-relevant loss of broods is low in our study population.Surprisingly, the social behaviour in terms of spatio-temporal stability of roost sites could well explain positive and negative population trends. Years of spatially stable and regularly used roost sites seem to correlate with increasing population sizes. In contrast, known shifts of RNP among different roost sites or the formations ofnew roost sites by split are related to population stagnation or a decrease in numbers. Climate change may leadto further range expansion as cities not suitable yet for RNP may become so in the near future.” |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | https://journals.ku.edu/EuroJEcol/article/view/11627/11008; https://journals.ku.edu/EuroJEcol/article/view/11627 |
| DOI: | 10.2478/eje-2018-0010 |
| الاتاحة: | https://journals.ku.edu/EuroJEcol/article/view/11627 https://doi.org/10.2478/eje-2018-0010 |
| Rights: | Copyright (c) 2018 Michael P. Braun, Nicole Braun, Detlev Franz, Bernadette Groß, Wolfgang Dreyer, Silke Laucht, Steven Kragten, Liviu G Pârâu, Esther Koch, Darius Stiels, Kathrin Schidelko, Sven Nekum, Claus Walter, Jana Romero, Achim Kemper, Markus Hubatsch, Tobias Krause, Simon Bruslund, Nicole Bruslund, Mirjam I Reinke-Beck, Andreas Bauer, Phillip Kremer, Markus S Braun, Hedwig Sauer-Gürth, Michael Wink ; https://creativecommons.org/licenses/by-nc-nd/4.0/ |
| رقم الانضمام: | edsbas.FA937949 |
| قاعدة البيانات: | BASE |
| DOI: | 10.2478/eje-2018-0010 |
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