説明
In the project MICROSNOW, the zooplankton community composition at station Svartnes in Balsfjorden was investigated in June 2017 and June 2018. Balsfjord is a 57 km long, narrow fjord with a shallow sill (35 m) and the bottom depth at the sampling station Svartnes is 190 m. The zooplankton was collected in vertical hauls of a WP-2 zooplankton net (mesh size 64 µm). The sampling was done in sets, consisting of deep haul (170 - 50 m) and shallow haul (50 m - surface). In 2017, 5 sets of zooplankton hauls were done (two sets on 20 June 2017, three sets on 21 June 2017) to investigate potential changes of the community composition throughout the day. In 2018, only one set (deep + shallow haul) was collected (12 June 2018). Under the projectID "Microsnow_2017_2018_Balsfjord" in GBIF also an additional data set on Microsetella norvegica (developmental stage composition from samples collected with a 30 L GoFlow bottle) is available.
データ レコード
この sampling event リソース内のデータは、1 つまたは複数のデータ テーブルとして生物多様性データを共有するための標準化された形式であるダーウィン コア アーカイブ (DwC-A) として公開されています。 コア データ テーブルには、12 レコードが含まれています。
拡張データ テーブルは1 件存在しています。拡張レコードは、コアのレコードについての追加情報を提供するものです。 各拡張データ テーブル内のレコード数を以下に示します。
この IPT はデータをアーカイブし、データ リポジトリとして機能します。データとリソースのメタデータは、 ダウンロード セクションからダウンロードできます。 バージョン テーブルから公開可能な他のバージョンを閲覧でき、リソースに加えられた変更を知ることができます。
バージョン
次の表は、公にアクセス可能な公開バージョンのリソースのみ表示しています。
引用方法
研究者はこの研究内容を以下のように引用する必要があります。:
Svensen C (2023). Zooplankton community composition in Svartnes, Balsfjord, Norway in June 2017 and June 2018 (sampled with a WP-2). Version 1.6. UiT The Arctic University of Norway. Samplingevent dataset. https://ipt.gbif.no/resource?r=microsnow2017_2018_zooplanktoncommunitycomposition_wp2&v=1.6
権利
研究者は権利に関する下記ステートメントを尊重する必要があります。:
パブリッシャーとライセンス保持者権利者は UiT The Arctic University of Norway。 This work is licensed under a Creative Commons Attribution Non Commercial (CC-BY-NC 4.0) License.
GBIF登録
このリソースをはGBIF と登録されており GBIF UUID: 6ce52028-93fe-43c4-a2cb-62d9adb7d5baが割り当てられています。 GBIF Norway によって承認されたデータ パブリッシャーとして GBIF に登録されているUiT The Arctic University of Norway が、このリソースをパブリッシュしました。
キーワード
Samplingevent
連絡先
- 最初のデータ採集者 ●
- 連絡先 ●
- 研究代表者
https://orcid.org/0000-0001-9577-3935
- メタデータ提供者 ●
- データ処理者
- データ処理者
- データ処理者
地理的範囲
The samples were collected at station Svartnes, Balsfjorden, Northern Norway (bottom depth 190 m).
| 座標（緯度経度） | 南 西 [69.363, 19.117], 北 東 [69.363, 19.117] |
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時間的範囲
| 開始日 / 終了日 | 2017-06-20 / 2017-06-21 |
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| 開始日 | 2018-06-12 |
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プロジェクトデータ
Vertical export of organic carbon from pelagic to benthic ecosystems consists mainly of copepod faecal pellets and detrital aggregates (marine snow). However, it is estimated that 20-70 % of the aggregate-associated carbon is degraded by grazing organisms within the euphotic zone. One copepod species believed to play a vital role in particle flux reduction is Microsetella norvegica, but little is known about its ecology and biology. In the first year (2017) of MICROSNOW, we successfully completed high-resolution field-investigations focusing on the role of M. norvegica for regulating the pelagic-benthic coupling in Balsfjord. More specifically, we investigated the zooplankton community composition, aggregate distribution, hydrographical and chemical properties of the water column and vertical carbon fluxes. Experiments on M. norvegica egg hatching and respiration rates at 4 different temperatures, grazing experiments and behavioural studies were successfully completed and data are now being processed. In the second year of the project we will continue building a strong data-set by including new complementary investigations. We will also focus on dissemination of results through outreach and publication. Novelties within the project are: 1) high-resolution in situ mapping of marine snow and copepods, 2) identifying interactions between sinking particles and copepods through in situ video-observations and experiments and 3) increased knowledge on M. norvegica biology and its role for pelagic-benthic coupling. This is a timely approach in the context of the future role of coastal marine ecosystems as a sink or source for atmospheric CO2, and for building knowledge on the resources available for harvestable species.
| タイトル | MICROSNOW |
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| 識別子 | Microsnow_2017_2018_Balsfjord |
| ファンデイング | Financially supported by fram center flagship “Climate Change in Fjord and Coast” grant nr. 2019147470 292018 |
| Study Area Description | Svartnes, Balsfjord, Northern Norway |
| 研究の意図、目的、背景など（デザイン） | Field sampling and analysis of field data in combination with experiments in the laboratory |
プロジェクトに携わる要員:
収集方法
The zooplankton community was sampled with a WP-2 type net (Hydrobios Apparatebau GmbH, Altenholz, Germany) in two depth intervals (50-0 m and 170-50 m). Five vertical profiles (at approximately 6 h intervals) were sampled in 2017 to quantify differences in vertical abundance distributions over a 24 h cycle. In 2018, one profile for abundance quantification was sampled during daytime. The net and its cod end had a mesh size of 64 µm and was used with a closing mechanism for stratified sampling. Due to the small mesh-size, the net was hauled vertically at low speed, 0.2-0.3 m s-1. On deck, the content of the cod-end was gently rinsed onto a 64 µm sieve, transferred to 100 mL PVC bottles and preserved with sodium tetraborate buffered formaldehyde in filtered seawater at 4 % final concentration.
| Study Extent | All samples were taken at the same station in Balsfjorden. However, samples were taken in two different years (2017 and 2018). |
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Method step description:
- Zooplankton samples were examined with an Olympus model SZX7 stereomicroscope according to the procedures described in Postel et al. (2000., Biomass and abundance, p. 83-192. In R. Harris, J. Lenz, M. Huntley, P. Wiebe and H. R. Skjoldal (eds.), ICES Zooplankton Methodology Manual. Academic Press.) and Kwasniewski et al. (2010, doi: 10.1016/j.pocean.2010.06.004).
- Zooplankton identification and counting was performed on sub-samples obtained from the whole sample by splitting with a box splitter. From each sample, a sub-sample of at least 500 individuals was examined. The remainder of the sample was screened in its entirety for the presence of individuals of rare species and ephemeral taxa.