Описание
This data was collected during a playback survey of owls in Warsaw in February, March and April of 2024. The project was organised by the Ornithology Science Club "Jajo" at the University of Warsaw, supported by the Warsaw University of Life Sciences, The Polish Society for the Protection of Birds (OTOP) and Owl Conservation Association (SOS). Over a hundred volunteers took part in the field surveys. In each of the 431 survey points covering most of the city's surface, 3 surveys were conducted. Researchers were listening for spontaneous vocal activity of selected owl species as well as using playback and recording all found owls. The occurrences in this dataset represent both absence and presence data. For each species surveyed at each point, there is either an absence record or one or more presence records in the occurrence table. To protect the precise locations of owls' nests, the coordinates attached to records represent survey points. Some birds were recorded outside of survey points – those observations are provided in this dataset with coordinates of the closest survey point and coordinateUncertaintyInMeters=500.
Записи данных
Данные этого sampling event ресурса были опубликованы в виде Darwin Core Archive (DwC-A), который является стандартным форматом для обмена данными о биоразнообразии в виде набора из одной или нескольких таблиц. Основная таблица данных содержит 1 724 записей.
Также в наличии 1 таблиц с данными расширений. Записи расширений содержат дополнительную информацию об основной записи. Число записей в каждой таблице данных расширения показано ниже.
Данный экземпляр IPT архивирует данные и таким образом служит хранилищем данных. Данные и метаданные ресурсов доступны для скачивания в разделе Загрузки. В таблице версий перечислены другие версии ресурса, которые были доступны публично, что позволяет отслеживать изменения, внесенные в ресурс с течением времени.
Версии
В таблице ниже указаны только опубликованные версии ресурса, которые доступны для свободного скачивания.
Как оформить ссылку
Исследователи должны дать ссылку на эту работу следующим образом:
Kuczkowska K, Sadkowski D, Baranowska W, Rapczyński J, Chalecki K (2026). Playback survey of owls in Warsaw in 2024. Version 1.1. University of Warsaw. Samplingevent dataset. https://ipt.gbif.pl/resource?r=sowy_warszawa&v=1.1
Права
Исследователи должны соблюдать следующие права:
Публикующей организацией и владельцем прав на данную работу является University of Warsaw. Эта работа находится под лицензией Creative Commons Attribution (CC-BY 4.0).
Регистрация в GBIF
Этот ресурс был зарегистрирован в GBIF, ему был присвоен следующий UUID: b004c221-4e29-4148-88b6-04e9ea2e3e5e. University of Warsaw отвечает за публикацию этого ресурса, и зарегистрирован в GBIF как издатель данных при оподдержке Polish Biodiversity Information Network.
Ключевые слова
Samplingevent; Observation
Контакты
- Metadata Provider ●
- Originator ●
- Point Of Contact
https://orcid.org/https://orcid.org/0009-0004-8277-7258
- Originator
- Originator
- Originator
- Originator
Географический охват
All survey points were located within city limits of Warsaw, Poland, in a grid of about 1 km x 1 km. Densely built-up areas without suitable trees, especially in the city center, were excluded from the grid. Additional points were added in suitable areas (parks, cemeteries) if they were too far from the existing grid points. Total of 431 point were surveyed.
| Ограничивающие координаты | Юг Запад [52,105, 20,857], Север Восток [52,362, 21,261] |
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Таксономический охват
Strix aluco, Asio otus, Athene noctua, Glaucidium passerinum, Aegolius funereus, Tyto alba
| Kingdom | Animalia |
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| Phylum | Chordata |
| Class | Aves |
| Order | Strigiformes |
Временной охват
| Дата начала / Дата окончания | 2024-02-20 / 2024-05-01 |
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Методы сбора
In each sampling point, the list of possible species was compiled based on habitat characteristics. Species were surveyed from the smallest one to the biggest at each point. For each surveyed species, the researchers were first passively listening for at least two minutes, then used playback and listened for response, marking all observed target species. The playback protocol is described in detail below and takes about 10 minutes per species. Playback was not used if species were already vocally active. Playback was stopped after the first vocal response of the species of interest. For the safety of the smaller species, the playback for them was not used in points where there were spontaneous vocal activity of Strix Aluco.
| Охват исследования | The goal of this study was to assess the number of owls of 6 species of interest nesting in Warsaw in 2024. The species of interest were: Strix aluco, Asio otus, Athene noctua, Glaucidium passerinum, Aegolius funereus and Tyto alba. 431 sampling points were selected in the city, following a grid of 1 km x 1 km, and 3 bioacoustic surveys with playback were condicted in each point. |
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| Контроль качества | Each survey was run by two researchers. All study participants were first instructed and given materials on proper fieldwork methods and recognising species of interest. In every researcher pair, there was at least one person with previous experience in bird or owl monitoring. In case of doubtful identifications, sound recordings were analysed by experts to confirm the species identification. |
Описание этапа методики:
- At each point, for each species surveyed: >120 s listening, 10 s playback, 60 s listening, 30 s playback, 120 s listening, 60 s playback, >120 s listening.
Дополнительные метаданные
| Альтернативные идентификаторы | https://ipt.gbif.pl/resource?r=sowy_warszawa |
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