Mesozooplankton abundance, biomass and copepod secondary production at the Barents Sea polar front, June 2011

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 60 records.

2 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.

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.

Versions

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

How to cite

Researchers should cite this work as follows:

Gawinski C, Dmoch K, Svensen C (2023). Mesozooplankton abundance, biomass and copepod secondary production at the Barents Sea polar front, June 2011. Version 1.6. UiT The Arctic University of Norway. Samplingevent dataset. https://ipt.gbif.no/resource?r=conflux&v=1.6

Rights

Researchers should respect the following rights statement:

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

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: de45ab96-fc20-4d35-ad41-8d25bf7aa22a.  UiT The Arctic University of Norway publishes this resource, and is itself registered in GBIF as a data publisher endorsed by GBIF Norway.

Keywords

Samplingevent

Contacts

Geographic Coverage

Four stations (M1-M4) across the Barents Sea polar front, covering Atlantic to Arctic waters (75-78 °N). M1: Lat 78.097, Lon 28.125, bottom depth: 278 m M2: Lat 76.949, Lon 29.711, bottom depth: 235 m M3: Lat 76.491, Lon: 29.863, bottom depth: 282 m M4: Lat 74.910, Lon 30.003, bottom depth: 371 m M2 M3 M4

Temporal Coverage

Project Data

No Description available

Sampling Methods

Mesozooplankton was sampled with a WP-2 net (Hydro-Bios) with 180 µm mesh, 0.57 m diameter net opening and filtering cod-end. Filtration volume was estimated from opening diameter and sampling depth. Three vertical net hauls were taken during day (around noon, WP2-day) and during night (around midnight, WP2-night) at all stations, at fixed depth intervals of 0-50 m, 50-100 m, and 100m-bottom by using a closing mechanism. The content of the cod-end was concentrated over a 90 µm mesh on deck and preserved with buffered formaldehyde at 4 % final concentration. To increase the resolution in the surface and to quantitatively sample the small copepod species and young developmental stages, one GoFlo profile was sampled at daytime at each station in the upper 50 m. Samples were taken from 1, 10, 20, 30, 40 and 50 m depth. The content of the water bottle (30 liters) from each individual depth was concentrated over a 20 µm mesh and preserved with buffered formaldehyde at 4 % final concentration. Mesozooplankton were counted and determined to species and developmental stage under a Leica dissecting microscope at 40x magnification. Mesozooplankton abundance was converted into biomass, based on species and stage-specific carbon weight relationships. Daily copepod secondary production (mg C m−3 d−1) in the upper 50 m water column was calculated as the sum of the product of biomass and weight-specific growth rate of each individual stage within the copepod population. Copepod growth rate was determined using four different growth rate models, namely Hirst & Bunker 2003 (HB_copepod_secondary_production, based on copepod body weight, chlorophyll a concentration, in-situ water temperature), Hirst & Lampitt 1998 (HL_copepod_secondary_productioncopepod, based on body weight, in-situ water temperature), Huntley & Lopez 1992 (HuLo_copepod_secondary_production, based on in-situ water temperature) and Zhou et al. 2010 (Zhou_copepod_secondary_productioncopepod, based on body weight, chlorophyll a concentration, in-situ water temperature, assimilated food input).

Method step description:

1. Daily copepod secondary production (mg C m−3 d−1) in the upper 50 m water column was calculated as the sum of the product of biomass and weight-specific growth rate of each individual stage within the copepod population. Copepod growth rate was determined using four different growth rate models, namely Hirst & Bunker 2003: https://doi.org/10.4319/lo.2003.48.5.1988 Hirst & Lampitt 1998: https://doi.org/10.1007/s002270050390 Huntley & Lopez 1992: https://doi.org/10.1086/285410 Zhou et al. 2010: https://doi.org/10.1093/plankt/fbq054

Additional Metadata