PANGAEA_988851 Low-resolution chironomid counts for centennial-scale sediment sequences from 5 West Midlands (UK) meres Watts, Aspen; Engels, Stefan; Martín-Puertas, Celia; Bennion, Helen; Boyle, John; Moyle, Madeleine Low-resolution chironomid counts for centennial-scale sediment sequences from 5 West Midlands (UK) meres 2026-02-24 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.988851 Investigator Aspen Watts aspenrynwatts@gmail.com Earth Science Event label Latitude of event Longitude of event Date/Time of event Date/Time of event 2 Elevation of event Comment of event Site DEPTH, sediment/rock Age AGE Chironomini larvula Chironomus anthracinus-type Chironomus plumosus-type Cladopelma lateralis-type Cryptochironomus Demicryptochironomus Dicrotendipes nervosus-type Einfeldia dissidens-type Endochironomus albipennis-type Endochironomus impar-type Endochironomus tendens-type Glyptotendipes barbipes-type Glyptotendipes pallens-type Lauterborniella Microtendipes pedellus-type Parachironomus varus-type Parachironomus vitiosus-type Polypedilum nubeculosum-type Polypedilum sordens-type Stictochironomus Chaetocladius-type B Corynoneura edwardsi-type Cricotopus intersectus-type Cricotopus trifasciatus-type Cricotopus bicinctus-type Cricotopus cylindraceus-type Epoicocladius Eukiefferiella claripennis-type Georthocladius Heterotrissocladius maeaeri-type Hydrobaenus johannseni-type Limnophyes Oliveridia Orthocladius-type S Parakiefferiella bathophila-type Psectrocladius barbimanus-type Psectrocladius sordidellus-type Psectrocladius barbatipes-type Ablabesmyia Procladius Cladotanytarsus mancus-type Micropsectra radialis-type Stempellinella Tanytarsus chinyensis-type Tanytarsus lugens-type Tanytarsus mendax-type geoscientificInformation Anthropogenic impact AQUA23-1-GC Chironomids COMB23-2-GC COP23-1-GC CRO23-1-GC Gravity corer Palaeoecology UK WM23-1-GC Wet sieved (100 µm) followed by hand picking from Bogorov sorting tray, mounted on permanent microscope slides, Euparal mounting medium 2023-04-09 2023-04-14 Complete 52.78109 52.99461 -2.87216 -2.29557 0.01 m (DEPTH, sediment/rock) 0.39 m (DEPTH, sediment/rock) unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

Leobener Str.

Bremen Bremen 28359 Germany online 1152 data points text/tab-separated-values Watts, Aspen (2025): Disentangling the drivers of Insect Armageddon: determining the impact of anthropogenic disturbances on midge diversity [dissertation]. Birkbeck, University of London Boyle, J F (1995): A simple closure mechanism for a compact, large-diameter, gravity corer. Journal of Paleolimnology, 13(1), 85-87, https://doi.org/10.1007/BF00678113 Brooks, Stephen J; Langdon, Pete G; Heiri, Oliver (2008): The Identification and Use of Palaearctic Chironomidae Larvae in Palaeoecology. In: Brodersen, Klaus Peter (Ed.), Technical Guide No. 10, Quaternary Research Association, London,, Journal of Paleolimnology, 40(2), 751-753, https://doi.org/10.1007/s10933-007-9191-1

This dataset provides palaeoecological data for 5 West Midlands Meres (UK). The meres that were sampled are Aqualate Mere, Comber Mere, Cop Mere, Crose Mere, and White Mere. Chironomid counts are presented against depth (cm) and age (year CE). The data provides information on the changes in the lake ecosystem, and has been used to identify the effects of external drivers on biodiversity parameters, with a focus on the effects of eutrophication of shallow meres on alpha and beta diversity dynamics of the chironomid fauna. Sediment cores were retrieved from the respective lakes using gravity corers deployed from a boat, in April 2023. The gravity cores were sampled at (a) the deepest end (30.5-38.5 cm), (b) 10.5 cm, and (c) consecutive 1-cm-thick samples between 0-3 cm core depth. A total of 25 samples from the sediment sequences were treated with warm KOH (10%) to de-flocculate the material, and subsequently rinsed over a 100 µm mesh. Chironomid head capsules (HCs) were picked from the residue using a Bogorov sorting tray, and mounted onto microscope slides using Euparal mounting medium. HCs were identified using Brooks et al., (2007, doi:10.1007/s10933-007-9191-1). Cricotopus (Isocladius) intersectus-type and Cricotopus (Isocladius) laricomalis-type were combined into a single group (C. intersectus-type sensu lato (s.l.)), as they are similar in appearance and ecological role (Brooks et al., 2007, doi:10.1007/s10933-007-9191-1). ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.988851"!

http://en.wikipedia.org/wiki/Kyr AGE http://www.marinespecies.org/aphia.php?p=taxdetails&id=156905 Procladius http://www.marinespecies.org/aphia.php?p=taxdetails&id=181574 Cryptochironomus http://www.marinespecies.org/aphia.php?p=taxdetails&id=181587 Stictochironomus http://www.marinespecies.org/aphia.php?p=taxdetails&id=987216 Limnophyes https://doi.org/10.1007/BF00678113 A simple closure mechanism for a compact, large-diameter, gravity corer https://doi.org/10.1007/s10933-007-9191-1 The Identification and Use of Palaearctic Chironomidae Larvae in Palaeoecology DIF 9.4 2026-02-24 2026-04-30