說明
The Swedish waterbird census in September (Svensk sjöfågelinventering (september)) was started in 1973 as a complement to the Swedish part of the international midwinter census (Swedish waterbird census (January)). It is a valuable tool for monitoring roosting waterbirds as well as finding out which areas are important resting places for migrating waterbirds.
The Swedish waterbird census (September) is one of several schemes within the Swedish Bird Survey, run by the Department of Biology at Lund University. The surveys are with a few exceptions carried out by volunteer ornithologists.
In this dataset, some information is placed in the table ExtendedMeasurementOrFacts (eMoF), which is part of the Source Archive available to download directly from the dataset’s page on gbif.org. The Source Archive contains the data exactly as uploaded to gbif (verbatim). Should you choose to download the dataset as GBIF Annotated Archive instead, the data has been interpreted and quality controlled by gbif, but, the data in the eMoF will not be included, as the eMoF extension is not yet supported by gbif.
資料紀錄
此資源sampling event的資料已發佈為達爾文核心集檔案（DwC-A），其以一或多組資料表構成分享生物多樣性資料的標準格式。 核心資料表包含 11,559 筆紀錄。
亦存在 2 筆延伸集的資料表。延伸集中的紀錄補充核心集中紀錄的額外資訊。 每個延伸集資料表中資料筆數顯示如下。
此 IPT 存放資料以提供資料儲存庫服務。資料與資源的詮釋資料可由「下載」單元下載。「版本」表格列出此資源的其它公開版本，以便利追蹤其隨時間的變更。
版本
以下的表格只顯示可公開存取資源的已發布版本。
如何引用
研究者應依照以下指示引用此資源。:
Haas F, Jönsson A (2024). Swedish Bird Survey: Swedish waterbird census (September). Version 1.0. Department of Biology, Lund University. Samplingevent dataset. https://www.gbif.se/ipt/resource?r=lu_ssis&v=1.0
權利
研究者應尊重以下權利聲明。:
此資料的發布者及權利單位為 Department of Biology, Lund University。 To the extent possible under law, the publisher has waived all rights to these data and has dedicated them to the Public Domain (CC0 1.0). Users may copy, modify, distribute and use the work, including for commercial purposes, without restriction.
GBIF 註冊
此資源已向GBIF註冊，並指定以下之GBIF UUID: ecebee66-f913-4105-acb6-738430d0edc9。 Department of Biology, Lund University 發佈此資源，並經由GBIF Sweden同意向GBIF註冊成為資料發佈者。
關鍵字
Samplingevent
聯絡資訊
- 元數據提供者 ●
- 出處 ●
- 連絡人
- PhD, Researcher
- 元數據提供者
- PhD, Researcher
地理涵蓋範圍
All data is collected within Sweden.
| 界定座標範圍 | 緯度南界 經度西界 [55.336, 10.957], 緯度北界 經度東界 [69.06, 24.167] |
|---|
分類群涵蓋範圍
All species within the following groups are surveyed: Ducks and swans (Anatidae) Grebes (Podicipedidae) Divers (Gaviidae) Auks (Alcidae) Cormorants (Phalacrocoracidae) Herons (Ardeidae) The following species is also included in the survey: Eurasian coot (Fulica atra) All observed individuals of the above mentioned species are counted.
| Kingdom | Animalia (Animals) |
|---|---|
| Phylum | Chordata (Chordates) |
| Class | Aves (Birds) |
時間涵蓋範圍
| 起始日期 / 結束日期 | 1973-09-10 / 2023-10-23 |
|---|
計畫資料
無相關描述
| 計畫名稱 | Svensk Fågeltaxering |
|---|---|
| 經費來源 | The Swedish Environmental Protection Agency supports the Swedish Bird Survey. |
| 研究區域描述 | Sweden |
參與計畫的人員:
https://orcid.org/0000-0002-5597-6209
取樣方法
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 0,03 to 125 km2.
| 研究範圍 | Geography and habitat: All observations are registered on counting sectors. The entire Swedish coastline is divided into ca 3100 such sectors, ca 1100 of which have been surveyed in September. 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 600 inland sectors have been surveyed in September. 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 September, 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. |
|---|---|
| 品質控管 | Data is checked and validated by the project leaders, specifically species identity, numbers and geographical location. Confidence in the data is good. |
方法步驟描述:
- See sampling description.
額外的詮釋資料
Important information for potential users of the Swedish waterbird census (September) data: 1. 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. 2. 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). 3. The coordinates supplied are for the central point of each counting sector.
| 目的 | National environmental monitoring of waterbirds. |
|---|---|
| 替代的識別碼 | https://www.gbif.se/ipt/resource?r=lu_ssis |