Investigating the potential of oxygen-isotope records from anthropogenic lakes as tracers of 20th century climate change

Historical climate change in southern England was investigated using ostracod oxygen-isotope (δ18O) records from two anthropogenic lakes in Hampshire, southern England. A strong relationship is observed between δ18Oostracod, δ18Oprecipitation and δ18Olake_water in the contemporary environment and th...

Full description

Saved in:
Bibliographic Details
Published in:Holocene (Sevenoaks) 2024-11, Vol.34 (11), p.1613-1626
Main Authors: Tindall, JM, Holmes, J, Candy, I, Leng, MJ, Langdon, P, Fonville, T, Sear, DA
Format: Article
Language:English
Subjects:
20th century
Anthropogenic factors
Aquatic crustaceans
Archives
Archives & records
Carbonates
climate
Climate change
Climate variability
Cores
England
Genetic resources
Holocene epoch
Lake sediments
Lakes
Meteorological data
Ostracoda
Oxygen
oxygen isotopes
Sediment
Sediments
time series analysis
Tracers
Variability
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Historical climate change in southern England was investigated using ostracod oxygen-isotope (δ18O) records from two anthropogenic lakes in Hampshire, southern England. A strong relationship is observed between δ18Oostracod, δ18Oprecipitation and δ18Olake_water in the contemporary environment and therefore δ18Oostracod from the sedimentary record of these systems has the potential to reflect past climate variability. The possibility of these sites to act as archives of climate change through δ18Oostracod analysis is explored through the study of lake sediment cores that cover the period from the early 20th century onwards. Both lakes showed similar directionality of shifts in δ18Oostracod over this period, suggesting common driving mechanisms. Comparing δ18Oostracod timeseries to meteorological data is challenging in part because of the complexity with which climate parameters are recorded in the δ18Olake_water and consequently within lacustrine carbonates. Our findings highlight the potential of sediments from anthropogenic lakes to act as archives of past climate and indicate they may be an important resource for generating climatic reconstructions across the medieval to instrumental period, which the sediments of many anthropogenic lakes cover. Such climate reconstructions would greatly improve our spatial and temporal understanding of climate variability where instrumental data are unavailable and other natural archives are scarce.
ISSN:0959-6836
1477-0911
1477-0911
DOI:10.1177/09596836241266435