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
The data in this occurrence 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 39,347 records.
1 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.
Rights
Researchers should respect the following rights statement:
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
Contacts
- Originator ●
- Point Of Contact
http://orcid.org/0000-0003-3884-2548
- Metadata Provider
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] |
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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 |
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Temporal Coverage
| Start Date / End Date | 2021-06-08 / 2021-09-15 |
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Project Data
No Description available
| Title | Benthic biodiversity in four Norwegian reservoirs |
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The personnel involved in the project:
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 |
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Method step description:
- 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
Additional Metadata
| Alternative Identifiers | https://ipt.nina.no/resource?r=benthic_biodiversity_in_regulated_lakes |
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