説明
In the project MICROSNOW the ecological role of the small copepod Microsetella norvegica in the sub-Arctic Balsfjorden, Norway, was investigated. Since M. norvegica is often undersampled in net hauls with a standard WP-2 net (180 µm mesh size), this project collected zooplankton water samples with a 30 L GoFlow bottle at distinct depths (0, 10, 20, 50, 90, 120 m). From the collected water, 20 L were concentrated onto a 20 µm mesh sieve, the collected zooplankton was preserved with buffered formaldehyde and later different developmental stages of M. norvegica were enumerated (adult male, adult female, copepodite stage CIV- CV, copepodite stage CI-CIII, nauplius). Under the projectID "Microsnow_2017_2018_Balsfjord" there is also an an additional data set on the zooplankton community composition at the same station (WP-2 net, 64 µm mesh size) available on GBIF.
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、24 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。
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: 5d37bb8b-4108-45b5-b3da-e648c95e5d5c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
- データ処理者
- データ処理者
- データ処理者
地理的範囲
Svartnes, Balsfjorden, Norway (190 m bottom depth)
| 座標（緯度経度） | 南 西 [69.363, 19.117], 北 東 [69.363, 19.117] |
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生物分類学的範囲
説明がありません
| Species | Microsetella norvegica |
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時間的範囲
| 開始日 | 2017-06-19 |
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| 開始日 | 2017-06-21 |
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| 開始日 | 2018-06-11 |
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| 開始日 | 2018-06-13 |
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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
To enumerate different developmental stages of Microsetella norvegica in June 2017 and June 2018, a 30 L GoFlow bottle was in each year successively deployed to 6 water depth (surface, 10, 20, 50, 90, 120 m) on two different days. The collected water was brought on board. From each GoFlow bottle cast, 20 L water were gently emptied via a silicone tube. The water sample was concentrated onto a 20 μm meshed sieve and transferred to a PVC bottle for later counts of Microsetella norvegica. These zooplankton samples were preserved with buffered formaldehyde at 4 % final concentration.
| Study Extent | All samples were collected at the same station. Both in 2017 and 2018, the station was sampled twice and during each of the in total 4 sampling days, zooplankton water samples were collected at 6 depths (0, 10, 20, 50, 90, 120 m). |
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Method step description:
- Zooplankton enumeration was generally done 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).
- Only a sub-sample was identified and counted. A box splitter was used to divide the GoFlo samples into two halves, and then only 1 half was examined in its entirety due to the low zooplankton concentrations. Copepodite life stages CI-CV of M. norvegica were identified at higher magnification using the Olympus light microscope model BX50, the other indentification was mostly done in a Olympus model SZX7 stereomicroscope.