Engels, Stefan; Lane, Christine S; Wilkinson-Rowe, Elo: Chironomid counts and loss-on-ignition for a 33cm long gravity core from lake Lontjørnane, Norway [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.964288 (dataset in review)
Abstract:
This dataset provides chironomid count data and loss-on-ignition measurements for a short sediment record from lake Lontjørnane, located in the Røldal region, Norway. The core spans 33cm and dates from ca 1175 CE to the present. We obtained a sediment core from the centre of the lake (8.8 m water depth) using a HON/Kajak gravity corer during fieldwork in September 2019, and subdivided the core into 1-cm-thick samples in the field. Samples were transported to the laboratory (Birkbeck University of London, UK), where they were weighted and processed using standard protocols – this involved 20 min treatment with warm KOH (10 %) and sieving over a 100 µm mesh. Chironomid head capsules were subsequently handpicked from the residue, mounted on permanent microscope slides, and identified using Brooks et al. (2007). This dataset provides chironomid count data in number of chironomid head capsules per sample. Additionally, loss-on-ignition was determined for each sample by comparing the dry weight of the sample before and after combustion at 550 °C following Heiri et al. (2001). The chironomid dataset provides insight in centennial-scale changes in the insect community of the lake ecosystem under past climate change and current anthropogenic impact.
Keyword(s):
Supplement to:
Engels, Stefan; Lane, Christine S; Wilkinson-Rowe, Elo (in prep.): How long is long-term? Comparing decadal and centennial scale insect diversity dynamics.
References:
Brooks, Stephen J; Birks, H John B (2001): Chironomid-inferred air temperatures from Lateglacial and Holocene sites in north-west Europe: progress and problems. Quaternary Science Reviews, 20(16-17), 1723-1741, https://doi.org/10.1016/S0277-3791(01)00038-5
Brooks, Steve J; Langdon, Peter G; Heiri, Oliver (2007): The Identification and Use of Palaearctic Chironomidae Larvae in Palaeoecology. Quaternary Research Association, Technical Guide, Quaternary Research Association, London, 10, 276 pp
Heiri, Oliver; Lotter, André F; Lemcke, G (2001): Loss on ignition as a method for estimating organic and carbonate content in sediments: reproducibility and comparability of results. Journal of Paleolimnology, 25(1), 101-110, https://doi.org/10.1023/A:1008119611481
Funding:
Birkbeck, University of London (BBK), grant/award no. InsectArmageddon_palaeo: Insect Armageddon: a palaeoperspective
Quaternary Research Association, grant/award no. InsectArmageddon: Insect Armageddon: natural variability, landscape change or human-induced climate warming?
Coverage:
Latitude: 59.912000 * Longitude: 6.606000
Date/Time Start: 2019-09-03T11:00:00 * Date/Time End: 2019-09-03T11:00:00
Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 0.325 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Engels, Stefan | Geocode | |
| 2 | Age | Age | a AD/CE | Engels, Stefan | ||
| 3 | Ablabesmyia | Ablabesmyia | # | Engels, Stefan | Counting, microscope | |
| 4 | Krenopelopia | Krenopelopia | # | Engels, Stefan | Counting, microscope | |
| 5 | Procladius | Procladius | # | Engels, Stefan | Counting, microscope | |
| 6 | Zavrelimyia | Zavrelimyia | # | Engels, Stefan | Counting, microscope | |
| 7 | Chironomus anthracinus-type | C. anthracinus-T | # | Engels, Stefan | Counting, microscope | |
| 8 | Cryptochironomus | Cryptochironomus | # | Engels, Stefan | Counting, microscope | |
| 9 | Demicryptochironomus | Demicryptochironomus | # | Engels, Stefan | Counting, microscope | |
| 10 | Dicrotendipes nervosus-type | D. nervosus-T | # | Engels, Stefan | Counting, microscope | |
| 11 | Lauterborniella/Zavreliella | Lauterborniella/Zavreliella | # | Engels, Stefan | Counting, microscope | |
| 12 | Microtendipes pedellus-type | M. pedellus-T | # | Engels, Stefan | Counting, microscope | |
| 13 | Pagastiella | Pagastiella | # | Engels, Stefan | Counting, microscope | |
| 14 | Polypedilum nubeculosum-type | P. nubeculosum-T | # | Engels, Stefan | Counting, microscope | |
| 15 | Sergentia coracina-type | S. coracina-T | # | Engels, Stefan | Counting, microscope | |
| 16 | Xenochironomus | Xenochironomus | # | Engels, Stefan | Counting, microscope | |
| 17 | Cladotanytarsus mancus-type | C. mancus-T | # | Engels, Stefan | Counting, microscope | |
| 18 | Micropsectra insignilobus-type | M. insignilobus-T | # | Engels, Stefan | Counting, microscope | |
| 19 | Micropsectra pallidula-type | M. pallidula-T | # | Engels, Stefan | Counting, microscope | |
| 20 | Paratanytarsus undifferentiated | Paratanytarsus undiff | # | Engels, Stefan | Counting, microscope | |
| 21 | Pseudochironomus | Pseudochironomus | # | Engels, Stefan | Counting, microscope | |
| 22 | Tanytarsus lugens-type | T. lugens-T | # | Engels, Stefan | Counting, microscope | |
| 23 | Tanytarsus mendax-type | T. mendax-T | # | Engels, Stefan | Counting, microscope | |
| 24 | Tanytarsus pallidicornis-type | T. pallidicornis-T | # | Engels, Stefan | Counting, microscope | |
| 25 | Corynoneura edwardsi-type | C. edwardsi-T | # | Engels, Stefan | Counting, microscope | |
| 26 | Cricotopus cylindraceus-type | C. cylindraceus-T | # | Engels, Stefan | Counting, microscope | |
| 27 | Cricotopus intersectus-type | C. intersectus-T | # | Engels, Stefan | Counting, microscope | Cricotopus (Isocladius) intersectus-type |
| 28 | Cricotopus-type P | Cricotopus-T P | # | Engels, Stefan | Counting, microscope | |
| 29 | Eukiefferiella indeterminata | Eukiefferiella indet | # | Engels, Stefan | Counting, microscope | |
| 30 | Heterotrissocladius grimshawi-type | H. grimshawi-T | # | Engels, Stefan | Counting, microscope | |
| 31 | Heterotrissocladius marcidus-type | H. marcidus-T | # | Engels, Stefan | Counting, microscope | |
| 32 | Heterotrissocladius subpilosus-type | H. subpilosus-T | # | Engels, Stefan | Counting, microscope | |
| 33 | Heterotanytarsus | Heterotanytarsus | # | Engels, Stefan | Counting, microscope | |
| 34 | Limnophyes | Limnophyes | # | Engels, Stefan | Counting, microscope | |
| 35 | Mesocricotopus | Mesocricotopus | # | Engels, Stefan | Counting, microscope | |
| 36 | Psectrocladius barbatipes-type | P. barbatipes-T | # | Engels, Stefan | Counting, microscope | Psectrocladius (Mesopsectrocladius) barbatipes-type |
| 37 | Orthocladius undifferentiated | Orthocladius undiff | # | Engels, Stefan | Counting, microscope | |
| 38 | Orthocladius oliveri-type | O. oliveri-T | # | Engels, Stefan | Counting, microscope | |
| 39 | Parakiefferiella bathophila-type | P. bathophila-T | # | Engels, Stefan | Counting, microscope | |
| 40 | Parametriocnemus/Paraphaenocladius | Parametriocnemus/Paraphaenocladius | # | Engels, Stefan | Counting, microscope | |
| 41 | Psectrocladius septentrionalis-type | P. septentrionalis-T | # | Engels, Stefan | Counting, microscope | Psectrocladius (Monopsectrocladius) septentrionalis-type |
| 42 | Psectrocladius sordidellus-type | P.sordidellus-T | # | Engels, Stefan | Counting, microscope | Psectrocladius (Psectrocladius) sordidellus-type |
| 43 | Pseudorthocladius | Pseudorthocladius | # | Engels, Stefan | Counting, microscope | |
| 44 | Pseudosmittia | Pseudosmittia | # | Engels, Stefan | Counting, microscope | |
| 45 | Smittia | Smittia | # | Engels, Stefan | Counting, microscope | |
| 46 | Zalutschia zalutschicola | Z. zalutschicola | # | Engels, Stefan | Counting, microscope | |
| 47 | Zalutschia-type B | Zalutschia-T B | # | Engels, Stefan | Counting, microscope | |
| 48 | Protanypus | Protanypus | # | Engels, Stefan | Counting, microscope | |
| 49 | Monodiamesa | Monodiamesa | # | Engels, Stefan | Counting, microscope | |
| 50 | Loss on ignition | LOI | % | Engels, Stefan | Ignition loss at 500°C |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1078 data points