| _version_ | 1867169168880566272 |
|---|---|
| author | Helmens, Karin Bergman, Jonas Engels, Stefan Kaislahti, Päivi Shala, Shyhrete Väliranta, Minna |
| author_facet | Helmens, Karin Bergman, Jonas Engels, Stefan Kaislahti, Päivi Shala, Shyhrete Väliranta, Minna |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | This dataset provides counts of chironomid head capsules for the MIS 5cd sediment sequence retrieved from Sokli (Finland) in 2002. Counts per taxon are presented against depth (m). The chironomid dataset provides information on Early Weichselian lake and fluvial (floodplain, stream channel) ecosystem dynamics and was used to quantitatively reconstruct climate conditions (Engels et al., 2010). A total of 76 samples from the MIS 5cd sediment sequence were selected for chironomid analysis, with a higher number of samples taken from the central part of the sequence, where chironomid concentrations were low. The samples were treated with warm KOH (10%) to de-flocculate the material and subsequently rinsed through a sieve with a 100-µm mesh. The samples in the interval between 16.08 and 16.73m did not disintegrate completely after treatment with KOH, and, after trying a variety of approaches, an additional overnight treatment with cold HF was added to the preparation procedure. Chironomid head capsules (HCs) were hand-picked from the residue using a Bogorov sorting tray and mounted on permanent microscope slides using Euparal mounting medium. HCs were identified using Brooks et al. (2007). Where the sum of head capsules was below 50, neighbouring samples have been amalgamated to ensure a representative count sum was reached. The lowermost sample of the sequence contains 47 HCs but was not merged with a neighbouring sample due to the differences in the assemblage composition. The final dataset presented here contains 47 samples. All analyses were performed in the laboratories of Stockholm University, Sweden. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_983420 |
| institution | PANGAEA |
| language | en |
| publishDate | 2025 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Chironomid counts from borehole Sokli B series in Sokli (Finland) in 2002 Helmens, Karin Bergman, Jonas Engels, Stefan Kaislahti, Päivi Shala, Shyhrete Väliranta, Minna Abiskomyia; Ablabesmyia; Borehole Sokli B series; Brillia; Brorup; Chaetocladius piger-type; Chaetocladius-type; Chironomids; Chironomini 1st instar; Chironomus anthracinus-type; Chironomus plumosus-type; Cladopelma lateralis-type; Cladotanytarsus mancus-type; Corynocera ambigua; Corynocera oliveri-type; Corynoneura ?carriana-type; Corynoneura arctica-type; Corynoneura coronata-type; Corynoneura edwardsi-type; Corynoneura lobata-type; Cricotopus cylindraceus-type; Cricotopus intersectus-type; Cricotopus obnixus-type; Cricotopus pulchripes-type; Cricotopus-type C; Cryptochironomus; DEPTH, sediment/rock; Diamesa; diatoms; Dicrotendipes nervosus-type; Diplocladius; Einfeldia dissidens-type; Endochironomus albipennis-type; Eukiefferiella spp.; Finland; Georthocladius; Glyptotendipes pallens-type; Gymnometriocnemus/Bryophaenocladius; Harnischia; Heterotrissocladius grimshawi-type; Heterotrissocladius marcidus-type; Heterotrissocladius subpilosus-type; Hydraulic piston corer, GM 100; Hydrobaenus; Krenopelopia; Lauterborniella; Limnophyes; loss on ignition; Macro-remains; Mesocricotopus; Metriocnemus eurynotus-type; Metriocnemus terrester-type; Microchironomus; Micropsectra insignilobus-type; Micropsectra radialis-type; Microtendipes pedellus-type; MIS-5cd; Monodiamesa; Nanocladius; Neozavrelia; non-pollen palynomorphs; Oliveridia; Omisus; Orthocladiinae spp.; Orthocladius rivulorum-type; Orthocladius-type; Orthocladius-type S; Parachaetocladius; Parachironomus varus-type; Paracladius; Paracladopelma; Paracricotopus; Parakiefferiella bathophila-type; Parakiefferiella triquetra-type; Paramerina; Parametriocnemus; Paratanytarsus austriacus-type; Paratanytarsus penicillatus-type; Paratanytarsus spp.; Paratendipes albimanus-type; Phaenopsectra flavipes-type; Pollen; Polypedilum nubeculosum-type; Polypedilum nubifer-type; Procladius; Prodiamesa; Protanypus; Psectrocladius calcaratus-type; Psectrocladius flavus-type; Psectrocladius psilopterus-type; Psectrocladius septentrionalis-type; Psectrocladius sordidellus-type; Pseudorthocladius; Pseudosmittia; Rheocricotopus effusus-type; see description in data abstract; Sergentia coracina-type; Smittia; Sokli; Sokli_2002/4; Stempellina-type; Stempellinella - Zavrelia; Stictochironomus rosenschoeldi-type; Stictochironomus-type A; Stilocladius; Symposiocladius; Synorthocladius; Tanypodini spp.; Tanytarsini spp.; Tanytarsus chinyensis-type; Tanytarsus lugens-type; Tanytarsus mendax-type; Tanytarsus nemorosus-type; Tanytarsus pallidicornis-type; Thienemanniella clavicornis-type; Thienemannimyia; Tribelos; Tvetenia; Unidentified; Zalutschia-type A; Zalutschia-type B; Zavrelimyia This dataset provides counts of chironomid head capsules for the MIS 5cd sediment sequence retrieved from Sokli (Finland) in 2002. Counts per taxon are presented against depth (m). The chironomid dataset provides information on Early Weichselian lake and fluvial (floodplain, stream channel) ecosystem dynamics and was used to quantitatively reconstruct climate conditions (Engels et al., 2010). A total of 76 samples from the MIS 5cd sediment sequence were selected for chironomid analysis, with a higher number of samples taken from the central part of the sequence, where chironomid concentrations were low. The samples were treated with warm KOH (10%) to de-flocculate the material and subsequently rinsed through a sieve with a 100-µm mesh. The samples in the interval between 16.08 and 16.73m did not disintegrate completely after treatment with KOH, and, after trying a variety of approaches, an additional overnight treatment with cold HF was added to the preparation procedure. Chironomid head capsules (HCs) were hand-picked from the residue using a Bogorov sorting tray and mounted on permanent microscope slides using Euparal mounting medium. HCs were identified using Brooks et al. (2007). Where the sum of head capsules was below 50, neighbouring samples have been amalgamated to ensure a representative count sum was reached. The lowermost sample of the sequence contains 47 HCs but was not merged with a neighbouring sample due to the differences in the assemblage composition. The final dataset presented here contains 47 samples. All analyses were performed in the laboratories of Stockholm University, Sweden. |
| title | Chironomid counts from borehole Sokli B series in Sokli (Finland) in 2002 |
| topic | Abiskomyia; Ablabesmyia; Borehole Sokli B series; Brillia; Brorup; Chaetocladius piger-type; Chaetocladius-type; Chironomids; Chironomini 1st instar; Chironomus anthracinus-type; Chironomus plumosus-type; Cladopelma lateralis-type; Cladotanytarsus mancus-type; Corynocera ambigua; Corynocera oliveri-type; Corynoneura ?carriana-type; Corynoneura arctica-type; Corynoneura coronata-type; Corynoneura edwardsi-type; Corynoneura lobata-type; Cricotopus cylindraceus-type; Cricotopus intersectus-type; Cricotopus obnixus-type; Cricotopus pulchripes-type; Cricotopus-type C; Cryptochironomus; DEPTH, sediment/rock; Diamesa; diatoms; Dicrotendipes nervosus-type; Diplocladius; Einfeldia dissidens-type; Endochironomus albipennis-type; Eukiefferiella spp.; Finland; Georthocladius; Glyptotendipes pallens-type; Gymnometriocnemus/Bryophaenocladius; Harnischia; Heterotrissocladius grimshawi-type; Heterotrissocladius marcidus-type; Heterotrissocladius subpilosus-type; Hydraulic piston corer, GM 100; Hydrobaenus; Krenopelopia; Lauterborniella; Limnophyes; loss on ignition; Macro-remains; Mesocricotopus; Metriocnemus eurynotus-type; Metriocnemus terrester-type; Microchironomus; Micropsectra insignilobus-type; Micropsectra radialis-type; Microtendipes pedellus-type; MIS-5cd; Monodiamesa; Nanocladius; Neozavrelia; non-pollen palynomorphs; Oliveridia; Omisus; Orthocladiinae spp.; Orthocladius rivulorum-type; Orthocladius-type; Orthocladius-type S; Parachaetocladius; Parachironomus varus-type; Paracladius; Paracladopelma; Paracricotopus; Parakiefferiella bathophila-type; Parakiefferiella triquetra-type; Paramerina; Parametriocnemus; Paratanytarsus austriacus-type; Paratanytarsus penicillatus-type; Paratanytarsus spp.; Paratendipes albimanus-type; Phaenopsectra flavipes-type; Pollen; Polypedilum nubeculosum-type; Polypedilum nubifer-type; Procladius; Prodiamesa; Protanypus; Psectrocladius calcaratus-type; Psectrocladius flavus-type; Psectrocladius psilopterus-type; Psectrocladius septentrionalis-type; Psectrocladius sordidellus-type; Pseudorthocladius; Pseudosmittia; Rheocricotopus effusus-type; see description in data abstract; Sergentia coracina-type; Smittia; Sokli; Sokli_2002/4; Stempellina-type; Stempellinella - Zavrelia; Stictochironomus rosenschoeldi-type; Stictochironomus-type A; Stilocladius; Symposiocladius; Synorthocladius; Tanypodini spp.; Tanytarsini spp.; Tanytarsus chinyensis-type; Tanytarsus lugens-type; Tanytarsus mendax-type; Tanytarsus nemorosus-type; Tanytarsus pallidicornis-type; Thienemanniella clavicornis-type; Thienemannimyia; Tribelos; Tvetenia; Unidentified; Zalutschia-type A; Zalutschia-type B; Zavrelimyia |
| url | https://doi.org/10.1594/PANGAEA.983420 |