Description
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 48 658 enregistrements.
2 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:
Haas F, Jönsson A (2024). Swedish Bird Survey: Swedish waterbird census (January). Version 1.0. Department of Biology, Lund University. Samplingevent dataset. https://www.gbif.se/ipt/resource?r=lu_ssij&v=1.0
Droits
Les chercheurs doivent respecter la déclaration de droits suivante:
L’éditeur et détenteur des droits de cette ressource est Department of Biology, Lund University. En vertu de la loi, l'éditeur a abandonné ses droits par rapport à ces données et les a dédié au Domaine Public (CC0 1.0). Les utilisateurs peuvent copier, modifier, distribuer et utiliser ces travaux, incluant des utilisations commerciales, sans aucune restriction.
Enregistrement GBIF
Cette ressource a été enregistrée sur le portail GBIF, et possède l'UUID GBIF suivante : 5c80f69a-46be-4269-8606-19ffc8b971e1. Department of Biology, Lund University publie cette ressource, et est enregistré dans le GBIF comme éditeur de données avec l'approbation du GBIF Sweden.
Mots-clé
Samplingevent
Contacts
- Fournisseur Des Métadonnées ●
- Créateur ●
- Personne De Contact
- PhD, Researcher
- Fournisseur Des Métadonnées
- PhD, Researcher
- Programmeur
Couverture géographique
All data is collected within Sweden.
| Enveloppe géographique | Sud Ouest [55,336, 10,957], Nord Est [69,06, 24,167] |
|---|
Couverture taxonomique
All species within the following groups are surveyed: Ducks and swans (Anatidae) Grebes (Podicipedidae) Divers (Gaviidae) Auks (Alcidae) Cormorants (Phalacrocoracidae) Herons (Ardeidae) Waders (Charadriidae, Scolopacidae) (since 2017) The following species are also included in the survey: Eurasian coot (Fulica atra) Common moorhen (Gallinula chloropus) (since 2021) Northern gannet (Morus bassanus) (since 2020) All observed individuals of the above mentioned species are counted.
| Kingdom | Animalia (Animals) |
|---|---|
| Phylum | Chordata (Chordates) |
| Class | Aves (Birds) |
Couverture temporelle
| Date de début / Date de fin | 1966-01-16 / 2023-02-27 |
|---|
Données sur le projet
Pas de description disponible
| Titre | Svensk Fågeltaxering |
|---|---|
| Financement | The Swedish Environmental Protection Agency supports the Swedish Bird Survey. |
| Description du domaine d'étude / de recherche | Sweden |
Les personnes impliquées dans le projet:
https://orcid.org/0000-0002-5597-6209
Méthodes d'échantillonnage
Three different methods can be used to survey a counting sector: surveying from land, boat or aeroplane. Surveying from land is the standard and most commonly used method. For large counting sectors the surveyor has to use multiple vantage points. Ideally the whole sector should be scanned for birds, but in many cases this is not possible due to parts being e.g. obscured by islands or unreachable for other reasons. In periods, boat-based counts have been carried out to cover areas not visible from land. To cover large areas not visible from the mainland, aerial surveys with professional observers have occasionally been conducted. Regardless of method, all observed individuals of the species included in the survey should be counted. The surveyed counting sectors vary in size from 0,01 to 300 km2.
| Etendue de l'étude | Geography and habitat: All observations are registered on counting sectors. The entire Swedish coastline is divided into ca 3100 such sectors, ca 2300 of which have been surveyed in January. In the inland, small lakes become sectors of their own while large lakes, as well as streams and rivers, are each split into several sectors. At present almost 1400 inland sectors have been surveyed in January. It is possible for surveyors to create new inland counting sectors, as well as start previously not surveyed coastal sectors, provided the intention is to survey them for several years. The waterbird census in January and September are using the same system of counting sectors. Timing and frequency: The survey should in general be carried out once in the middle of January, but a sector is allowed to be censused more than once in a given year if different methods are used (see below). The exact survey dates are decided and notified by the project management every year. The time taken to survey a sector depends on the size of the sector and on the abundance and distribution of birds. |
|---|---|
| Contrôle qualité | Data is checked and validated by the project leaders, specifically species identity, numbers and geographical location. Confidence in the data is good. |
Description des étapes de la méthode:
- See sampling description.
Citations bibliographiques
- Gaget, E., Ovaskainen, O., Bradter, U., Haas, F., Jonas, L., Johnston, A., Langendoen, T., Lehikoinen, A. S., Pärt, T., Pavón-Jordán, D., Sandercock, B. K., Soultan, A. & Brommer, J. E., 2024. Changes in waterbird occurrence and abundance at their northern range boundaries in response to climate warming: importance of site area and protection status. (E-pub ahead of print) In: Animal Conservation.
- Gaget, E., Johnston, A., Pavón-Jordán, D., Lehikoinen, A. S., Sandercock, B. K., Soultan, A., Božič, L., Clausen, P., Devos, K., Domsa, C., Encarnação, V., Faragó, S., Fitzgerald, N., Frost, T., Gaudard, C., Gosztonyi, L., Haas, F., Hornman, M., Langendoen, T. & Ieronymidou, C. & 15 others, , 2022. Protected area characteristics that help waterbirds respond to climate warming. Conservation Biology 36, 4.
- Gaget, E., Pavón-Jordán, D., Johnston, A., Lehikoinen, A., Hochachka, W. M., Sandercock, B. K., Soultan, A., Azafzaf, H., Bendjedda, N., Bino, T., Božič, L., Clausen, P., Dakki, M., Devos, K., Domsa, C., Encarnação, V., Erciyas-Yavuz, K., Faragó, S., Frost, T. & Gaudard, C. & 30 others, , 2021. Benefits of protected areas for nonbreeding waterbirds adjusting their distributions under climate warming. Conservation Biology 35: 834-845.
Métadonnées additionnelles
Important information for potential users of the Swedish waterbird census (January) data: 1. The Swedish waterbird census (January) started officially in 1967, but the dataset also contains data from the pilot study in 1966. 2. In 1973 the midwinter count was complemented by a September count of resting migrating birds in the same counting sectors (Swedish Bird Survey: Swedish waterbird count (September)). 3. The data shown in this Darwin core archive are, for each species, the sum of all individuals within the counting sector during a visit. Note that some sectors are surveyed twice, but with different methods, in some years. 4. Null visits and zero observations: Users of the data have to construct zero data for each species themselves. The occurrence table contains observations of species that were actually present at the surveyed sites, but the surveyor would have looked for all species that are included in the survey design. For visits to sites where no observations were made at all (when such null visits exist), the occurrence table also includes one zero observation with vernacularName set to "SpeciesIncludedInSurvey", and occurrenceStatus set to "Absent". This is to ensure that information about surveyor is included in the DwC-A also for these events. Additionally, information about whether a visit is a null visit (i.e. true = no survey species observed) or not (i.e. false = one or more survey species observed) is included in the ”extended measurement or fact table” (noObservations). 5. The coordinates supplied are for the central point of each counting sector.
| Objet | National environmental monitoring of waterbirds. |
|---|---|
| Identifiants alternatifs | https://www.gbif.se/ipt/resource?r=lu_ssij |