Description
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.
Enregistrements de données
Les données de cette ressource données d'échantillonnage ont été publiées sous forme d'une Archive Darwin Core (Darwin Core Archive ou DwC-A), le format standard pour partager des données de biodiversité en tant qu'ensemble d'un ou plusieurs tableurs de données. Le tableur de données du cœur de standard (core) contient 1 724 enregistrements.
1 tableurs de données d'extension existent également. Un enregistrement d'extension fournit des informations supplémentaires sur un enregistrement du cœur de standard (core). Le nombre d'enregistrements dans chaque tableur de données d'extension est illustré ci-dessous.
Cet IPT archive les données et sert donc de dépôt de données. Les données et métadonnées de la ressource sont disponibles pour téléchargement dans la section téléchargements. Le tableau des versions liste les autres versions de chaque ressource rendues disponibles de façon publique et permet de tracer les modifications apportées à la ressource au fil du temps.
Versions
Le tableau ci-dessous n'affiche que les versions publiées de la ressource accessibles publiquement.
Comment citer
Les chercheurs doivent citer cette ressource comme suit:
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
Droits
Les chercheurs doivent respecter la déclaration de droits suivante:
L’éditeur et détenteur des droits de cette ressource est University of Warsaw. Ce travail est sous licence Creative Commons Attribution (CC-BY) 4.0.
Enregistrement GBIF
Cette ressource a été enregistrée sur le portail GBIF, et possède l'UUID GBIF suivante : b004c221-4e29-4148-88b6-04e9ea2e3e5e. University of Warsaw publie cette ressource, et est enregistré dans le GBIF comme éditeur de données avec l'approbation du Polish Biodiversity Information Network.
Mots-clé
Samplingevent; Observation
Contacts
- Fournisseur Des Métadonnées ●
- Créateur ●
- Personne De Contact
https://orcid.org/https://orcid.org/0009-0004-8277-7258
- Créateur
- Créateur
- Créateur
- Créateur
Couverture géographique
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.
| Enveloppe géographique | Sud Ouest [52,105, 20,857], Nord Est [52,362, 21,261] |
|---|
Couverture taxonomique
Strix aluco, Asio otus, Athene noctua, Glaucidium passerinum, Aegolius funereus, Tyto alba
| Kingdom | Animalia |
|---|---|
| Phylum | Chordata |
| Class | Aves |
| Order | Strigiformes |
Couverture temporelle
| Date de début / Date de fin | 2024-02-20 / 2024-05-01 |
|---|
Méthodes d'échantillonnage
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.
| Etendue de l'étude | 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. |
|---|---|
| Contrôle qualité | 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. |
Description des étapes de la méthode:
- 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.
Métadonnées additionnelles
| Identifiants alternatifs | https://ipt.gbif.pl/resource?r=sowy_warszawa |
|---|