Descripción
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.
Registros
Los datos en este recurso de evento de muestreo han sido publicados como Archivo Darwin Core(DwC-A), el cual es un formato estándar para compartir datos de biodiversidad como un conjunto de una o más tablas de datos. La tabla de datos del core contiene 12 registros.
también existen 1 tablas de datos de extensiones. Un registro en una extensión provee información adicional sobre un registro en el core. El número de registros en cada tabla de datos de la extensión se ilustra a continuación.
Este IPT archiva los datos y, por lo tanto, sirve como repositorio de datos. Los datos y los metadatos del recurso están disponibles para su descarga en la sección descargas. La tabla versiones enumera otras versiones del recurso que se han puesto a disposición del público y permite seguir los cambios realizados en el recurso a lo largo del tiempo.
Versiones
La siguiente tabla muestra sólo las versiones publicadas del recurso que son de acceso público.
¿Cómo referenciar?
Los usuarios deben citar este trabajo de la siguiente manera:
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
Derechos
Los usuarios deben respetar los siguientes derechos de uso:
El publicador y propietario de los derechos de este trabajo es UiT The Arctic University of Norway. Esta obra está bajo una licencia Creative Commons de Atribución/Reconocimiento-NoComercial (CC-BY-NC 4.0).
Registro GBIF
Este recurso ha sido registrado en GBIF con el siguiente UUID: 6ce52028-93fe-43c4-a2cb-62d9adb7d5ba. UiT The Arctic University of Norway publica este recurso y está registrado en GBIF como un publicador de datos avalado por GBIF Norway.
Palabras clave
Samplingevent
Contactos
- Originador ●
- Punto De Contacto ●
- Investigador Principal
https://orcid.org/0000-0001-9577-3935
- Proveedor De Los Metadatos ●
- Procesador
- Procesador
- Procesador
Cobertura geográfica
The samples were collected at station Svartnes, Balsfjorden, Northern Norway (bottom depth 190 m).
| Coordenadas límite | Latitud Mínima Longitud Mínima [69,363, 19,117], Latitud Máxima Longitud Máxima [69,363, 19,117] |
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Cobertura temporal
| Fecha Inicial / Fecha Final | 2017-06-20 / 2017-06-21 |
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| Fecha Inicial | 2018-06-12 |
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Datos del proyecto
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 |
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| Identificador | Microsnow_2017_2018_Balsfjord |
| Fuentes de Financiación | Financially supported by fram center flagship “Climate Change in Fjord and Coast” grant nr. 2019147470 292018 |
| Descripción del área de estudio | Svartnes, Balsfjord, Northern Norway |
| Descripción del diseño | Field sampling and analysis of field data in combination with experiments in the laboratory |
Personas asociadas al proyecto:
Métodos de muestreo
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.
| Área de Estudio | 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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Descripción de la metodología paso a paso:
- 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.
Metadatos adicionales
| Identificadores alternativos | https://ipt.gbif.no/resource?r=microsnow2017_2018_zooplanktoncommunitycomposition_wp2 |
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