Gillnet test fishing and radiocaesium (Cs-137) of brown trout (Salmo trutta) and Arctic char (Salvelinus aplinus) 2008 and 2009 from 20 Central Scandinavian lakes: Events

最新版本 由 Norwegian University of Science and Technology 發佈於 Aug 20, 2019 Norwegian University of Science and Technology

Brown trout (Salmo trutta) and Arctic char (Salvelinus alpinus) were sampled in 20 lakes located along an altitudinal gradient (36 - 850 m.a.s.l.) in central Scandinavia. 10 of these lakes where trout only populations (allopatric) and in 10 trout and char co-existed. In addition, Three spined stickleback (Gasterosteus aculeatus L.) and European eel (Anguilla Anguilla L) co-occurs in most lakes below the marine transgression line. However, these species where not collected using the present gill-net series. Also, two of the lakes (Slipstikken and Grisbakktjørna) had a scares population of burbot (Lota lota L.) (catch of burbot not recorded). The sympatric lakes, with the exception of Kjerråtjønnin were sampled three times (spring 2008 – autumn 2008 – spring 2009), and the allopatric lakes were sampled two times (autumn 2008 – spring 2009). Autumn samples were collected just before ice formation and spring samples in 2008 somewhat after and 2009 just after ice breakup. At each sampling period fish were sampled with bottom gill nets (1.5 m x 25 m) with bar mesh sizes of 12.5 – 16 – 19.5 - 24 – 29 – 35 mm. Three and three nets were linked together making chains with alternating mesh sizes in order to represent all mesh sizes at different depths in each lake at each sampling period. Depths were measured at the start and end of each net. The gillnet chains were set perpendicular to the shore in the evening and hauled the next morning. The fish were frozen in plastic bags and stored at -25 °C. In the laboratory, wet mass (precision 0.1 g), fork length (precision 1 mm), sex, parasite load and maturation stage (Dahl 1917) were determined. Scale (trout) and otolith (char) samples were taken and used for age determination. In a subsample of the fish the contents of the oesophagus and the stomach were identified to various taxonomic levels and grouped into seven categories: surface insects, chironomidae, mollusca, benthic insects, benthic crustaceans, zooplankton and fish. Stomach contents and each individual fish were dried, and homogenized before quantifying 137Cs by gamma counting the samples in an integral, well-type, NaI-scintillation detector (LKBWallac Compugamma). Due to current restrictions with the DwC-A format, data and associated measurements on individual fish is published separately from gill-net events and associated measurements (this dataset). This DwC-A gives the event part of the dataset. Data on occurrences and measurements and traits of individual fish is given in a separate dataset ("Gillnet test fishing and radiocaesium (Cs-137) of brown trout (Salmo trutta) and Arctic char (Salvelinus aplinus) 2008 and 2009 from 20 Central Scandinavian lakes: Occurrences" (UUID: 28c6444b-d35e-4863-a342-820a82ba63b7, Alternative Identifier: http://gbif.vm.ntnu.no/ipt/resource?r=gillnet_fishing_from_20_central_scandinavian_lakes)

Data Records

The data in this sampling event resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 1,386 records. 1 extension data tables also exist. An extension record supplies extra information about a core record. The number of records in each extension data table is illustrated below.

  • Event (核心)
    1386
  • MeasurementOrFact 
    9284

This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.

下載

下載最新版本的Darwin Core Archive (DwC-A)資源,或資源元數據的EML或RTF文字檔。

DwC-A資料集 下載 1,386 紀錄 在 English 中 (352 KB) - Update frequency: 有可能更新,但不確知何時
元數據EML檔 下載 在 English 中 (11 KB)
元數據RTF文字檔 下載 在 English 中 (12 KB)

版本

The table below shows only published versions of the resource that are publicly accessible.

如何引用

研究者應依照以下指示引用此資源。:

Finstad A G, Berg O K, Ulvan E, Helland I, Ugedal O (2019): Gillnet test fishing and radiocaesium (Cs-137) of brown trout (Salmo trutta) and Arctic char (Salvelinus aplinus) 2008 and 2009 from 20 Central Scandinavian lakes: Events. v1.3. NTNU University Museum. Dataset/Samplingevent. https://gbif.vm.ntnu.no/ipt/resource?r=gillnet_fishing_from_20_central_scandinavian_lakes_events&v=1.3

Rights

研究者應尊重以下權利聲明。:

The publisher and rights holder of this work is Norwegian University of Science and Technology. This work is licensed under a Creative Commons Attribution (CC-BY) 4.0 License.

GBIF 註冊

此資源已向GBIF註冊,並指定以下之GBIF UUID: a6cc334b-036a-43d0-ae68-3f84a08e8d97。  Norwegian University of Science and Technology 發佈此資源,並經由GBIF Norway同意向GBIF註冊成為資料發佈者。

關鍵字

gill-net; radioccaesium; freswhater; lakes; fish; Metadata

聯絡資訊

資源建立者:

Anders Gravbrøt Finstad
Associate Professor
Norwegian University of Science and Technology, Department of Natural History NO
Ole Kristian Berg
Professor
Norwegian Univeristy of Science and Technology, Department of Biology NO
Eva Ulvan
Research Tecnician
Norwegian Institute for Nature Research
Ingeborg Helland
Research Scientist
Norwegian Institute for Nature Research NO
Ola Ugedal
Senior Researcher
Norwegian Institute for Nature Resarch NO

可回覆此資源相關問題者:

Anders Gravbrøt Finstad
Associate Professor
Norwegian University of Science and Technology, Department of Natural History

元數據填寫者:

Anders Gravbrøt Finstad
Associate Professor
Norwegian University of Science and Technology, Department of Natural History NO

與此資源的相關者:

使用者
Anders Gravbrøt Finstad

地理涵蓋範圍

Central Scandinavia in a climate gradient from coast to inland.

界定座標範圍 緯度南界 經度西界 [63.22, 9.33], 緯度北界 經度東界 [64.94, 14.75]

分類群涵蓋範圍

Arctic char (Salvelinus alpinus) and brown trout (Salmo trutta)identified to species.

Species  Salvelinus alpinus (Arctic char),  Salmo trutta (brown trout)

時間涵蓋範圍

起始日期 / 結束日期 2008-07-01 / 2009-06-30

取樣方法

At each sampling period fish were sampled with bottom gill nets (1.5 m x 25 m) with bar mesh sizes of 12.5 – 16 – 19.5 - 24 – 29 – 35 mm (Ugedal gill-net series). Three and three nets were linked together with the order of mesh sizes randomized once. Each event represent a single gill-net, with parent event referring to the gill-net chain (Ugedal series). Depths were measured at the start and end of each net. The net where set in the evening and pulled the next morning (exact time not recorded). The eventDate field represent the day of pulling the nets (i.e. the day of the sampling of the fish).

研究範圍 Lakes where sampled two or three times (spring 2008 – autumn 2008 – spring 2009. Autumn samples were collected just before ice formation and spring samples in 2008 somewhat after and 2009 just after ice breakup.

方法步驟描述:

  1. Data where entered on paper forms in field or in lab, and punched on Microsoft xl spreadsheets. Manual control of the entered data where undertaken subsequently.

額外的元數據

替代的識別碼 a6cc334b-036a-43d0-ae68-3f84a08e8d97
https://gbif.vm.ntnu.no/ipt/resource?r=gillnet_fishing_from_20_central_scandinavian_lakes_events