Holocene Temperature Reconstructions from Pollen and Chironomids in Eastern Canada

Eastern Canada's boreal forests are the focus of this dataset, which contains raw data and R scripts from a 2026 study published in Quaternary Science Reviews. The study compares pollen- and chironomid-based summer temperature reconstructions across five lacustrine sites to examine proxy biases and the influence of fire disturbance. The data and code were authored by Jonathan Lesven and shared on figshare under a CC-BY-4.0 license.

Use Cases

• Compare pollen- and chironomid-based temperature inferences based on the multiproxy data from five lake sites.
• Assess the impact of Holocene fire regimes on proxy discrepancies as described in the study.
• Replicate the figures and tables from the Lesven et al. (2026) publication using the provided R scripts.
• Analyze biases related to different inference methods (MAT and fxTWA-PLS) using the raw datasets.

Strengths

• Includes both raw datasets and the R scripts used to generate all figures and tables from the published study.
• Focuses on a specific, well-defined research question comparing two biological proxies across five sites.
• Shared under a permissive CC-BY-4.0 license, facilitating reuse and reproduction.

Limitations

• Row count and column-level documentation are unknown, which may limit suitability assessment.
• The dataset is small (1.1 MB), suggesting it contains summary or processed data rather than extensive raw observations.

Provenance

Source

figshare, authored by Jonathan Lesven.

Collection Method

Data and scripts supporting the research published in Lesven et al. (2026), Quaternary Science Reviews.

Time Range

Holocene epoch.

Freshness

Last updated 2026-03-23 20:36:43.

Geography

Five lacustrine sites in eastern Canada (Quebec Labrador region), including Blow Hole, Billy, Petit Anne, Mista, and Aurélie.