Benthic biodiversity in four pairs of Norwegian lakes

Occurrence
Latest version published by Norwegian Institute for Nature Research on Dec 8, 2022 Norwegian Institute for Nature Research
Publication date:
8 December 2022
License:
CC-BY 4.0

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Description

The aim of the project was to assess the effect of water-level regulation on diversity of lake littoral meiofauna and protists. Littoral fine-gravel bottoms of four pairs of Norwegian lakes were sampled in June and September 2021. Lakes were sampled in pairs that had similar water-quality but one of which was regulated and the other was unregulated. The bottom material was sampled at 30-40 cm depth, 1-5 m from the shoreline. Six replicate samples from each sampling point was taken by lowering a 25-cm diameter cylinder (12 cm high) to the bottom and 5 spoons of the bottom material from inside the cylinder was transferred to each sample bottle. No macroinvertebrates (size > 1 mm) were observed in the spoons before emptying them to the sample bottles. Water was filtrated out of the bottles using a 10 µm mesh, and then, samples were stored in 96-% ethanol. In total, the dataset contains 101 samples, including 5 control samples and 96 samples from the lakes. Taxonomic composition of bottom-dwelling meiofauna and protists was determined using DNA metabarcoding of the V4 fragment of the 18S rRNA gene. Taxa were identified using the PR2 reference database (protists) and NCBI GenBank nucleotide database (meiofauna). Caution should be exercised when interpreting occurrences of single species, as the DNA metabarcoding and bioinformatics may contain errors. The effect of regulation on species richness and change in community composition (Alpha-diversity) was assessed using mixed effects models.

Data Records

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39347
dnaDerivedData 
39347

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The publisher and rights holder of this work is Norwegian Institute for Nature Research. 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: 536649eb-a529-4f6d-b97c-0c31b5f75a2d.  Norwegian Institute for Nature Research publishes this resource, and is itself registered in GBIF as a data publisher endorsed by GBIF Norway.

Keywords

Occurrence

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Contacts

Markus Majaneva
  • Originator
  • Point Of Contact
Researcher
NINA
Trondheim
NO
Matthew Grainger
  • Metadata Provider
Researcher
NINA
Trondheim
NO
Roald Vang
  • Point Of Contact
Section manager
NINA
Trondheim
NO

Geographic Coverage

Meråker, Orkland, Melhus, Leksvik, Inderåy, Fosen and Skaun Municipalities in Trøndelag County, Norway

Bounding Coordinates South West [62.714, 6.24], North East [66.249, 15.029]

Taxonomic Coverage

Benthic Invertebrates

Phylum Apicomplexa, Apusomonadidae, Centroheliozoa, Cercozoa, Chlorophyta, Choanoflagellida, Chrompodellids, Ciliophora, Conosa, Cryptophyta, Dinoflagellata, Discoba, Fungi, Glaucophyta, Haptophyta, Hemimastigophora, Hilomonadea, Katablepharidophyta, Lobosa, Mesomycetozoa, Metamonada, Metazoa, Ochrophyta, Opalozoa, Perkinsea, Pseudofungi, Rhodophyta, Sagenista, Stramenopiles, Streptophyta, Telonemia

Temporal Coverage

Start Date / End Date 2021-06-08 / 2021-09-15

Project Data

No Description available

Title Benthic biodiversity in four Norwegian reservoirs

The personnel involved in the project:

Markus Majaneva

Sampling Methods

Lakes were sampled in pairs that had similar water-quality but one of which was regulated and the other was unregulated. The bottom material was sampled at 30-40 cm depth, 1-5 m from the shoreline. Six replicate samples from each sampling point was taken by lowering a 25-cm diameter cylinder (12 cm high) to the bottom and 5 spoons of the bottom material from inside the cylinder was transferred to each sample bottle. No macroinvertebrates (size > 1 mm) were observed in the spoons before emptying them to the sample bottles. Water was filtrated out of the bottles using a 10 µm mesh, and then, samples were stored in 96-% ethanol.

Study Extent Trøndelag County Norway, in the Meråker, Orkland, Melhus, Leksvik, Inderøy, Fosen and Skaun Municipalities

Method step description:

  1. Taxonomic composition of bottom-dwelling meiofauna and protists was determined using DNA metabarcoding of the V4 fragment of the 18S rRNA gene. Taxa were identified using the PR2 reference database (protists) and NCBI GenBank nucleotide database (meiofauna).

Bibliographic Citations