Microsetella norvegica at station Svartnes, Balsfjord, Norway in June 2017 and June 2018 (sampled with a GoFlow bottle)

Evento de amostragem
Versão mais recente published by UiT The Arctic University of Norway on jul. 18, 2023 UiT The Arctic University of Norway
Publication date:
18 de julho de 2023
Licença:
CC-BY-NC 4.0

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Descrição

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.

Registros de Dados

Os dados deste recurso de evento de amostragem foram publicados como um Darwin Core Archive (DwC-A), que é o formato padronizado para compartilhamento de dados de biodiversidade como um conjunto de uma ou mais tabelas de dados. A tabela de dados do núcleo contém 24 registros.

Também existem 1 tabelas de dados de extensão. Um registro de extensão fornece informações adicionais sobre um registro do núcleo. O número de registros em cada tabela de dados de extensão é ilustrado abaixo.

Event (core)
24
Occurrence 
120

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.

Versões

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Direitos

Pesquisadores devem respeitar a seguinte declaração de direitos:

O editor e o detentor dos direitos deste trabalho é UiT The Arctic University of Norway. This work is licensed under a Creative Commons Attribution Non Commercial (CC-BY-NC 4.0) License.

GBIF Registration

Este recurso foi registrado no GBIF e atribuído ao seguinte GBIF UUID: 5d37bb8b-4108-45b5-b3da-e648c95e5d5c.  UiT The Arctic University of Norway publica este recurso, e está registrado no GBIF como um publicador de dados aprovado por GBIF Norway.

Palavras-chave

Samplingevent

Contatos

Camilla Svensen
  • Originador
  • Ponto De Contato
  • Pesquisador Principal
Professor
UiT The Arctic University of Norway
Tromsø
NO
Ingrid Wiedmann
  • Processador
Researcher
UiT The Arctic University of Norway
Tromsø
NO
Sławomir Kwaśniewski
  • Processador
Professor
Institute of Oceanology Polish Academy of Sciences (IO PAN)
Sopot
PL
Mateusz Ormańczyk
  • Processador
Researcher
Institute of Oceanology Polish Academy of Sciences (IO PAN)
Sopot
PL

Cobertura Geográfica

Svartnes, Balsfjorden, Norway (190 m bottom depth)

Coordenadas delimitadoras Sul Oeste [69,363, 19,117], Norte Leste [69,363, 19,117]

Cobertura Taxonômica

Nenhuma descrição disponível

Espécie Microsetella norvegica

Cobertura Temporal

Data Inicial 2017-06-19
Data Inicial 2017-06-21
Data Inicial 2018-06-11
Data Inicial 2018-06-13

Dados Sobre o Projeto

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.

Título MICROSNOW
Identificador Microsnow_2017_2018_Balsfjord
Financiamento Financially supported by fram center flagship “Climate Change in Fjord and Coast” grant nr. 2019147470 292018
Descrição da Área de Estudo Svartnes, Balsfjord, Northern Norway
Descrição do Design Field sampling and analysis of field data in combination with experiments in the laboratory

O pessoal envolvido no projeto:

Camilla Svensen
Ingrid Wiedmann

Métodos de Amostragem

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.

Área de Estudo 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).

Descrição dos passos do método:

  1. 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).
  2. 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.

Metadados Adicionais