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Reply to formal comment on Griffiths et al. (2017) submitted by Gajewski (2020)
Katherine Griffiths1, Neal Michelutti1, Marianne S V Douglas1
1Paleoecological Environmental Assessment and Research Laboratory (PEARL), Department of Biology, Queen's University, Kingston, Ontario, Canada.
Plos One
|August 3, 2021
Summary
This study defends its microclimate classification for Arctic lakes, using extensive historical aerial and ground surveys. The research reaffirms robust paleolimnological methods and data interpretation, addressing criticisms of prior work.
Area of Science:
- Paleolimnology
- Arctic Research
- Climate Change Science
Background:
- Griffiths et al. (2017) examined microclimate impacts on Arctic lake diatoms.
- Gajewski criticized the study's microclimate classification as anecdotal.
- This response clarifies methodologies and defends the original findings.
Purpose of the Study:
- To formally comment on and refute criticisms of Griffiths et al. (2017).
- To validate the microclimate classification scheme used in the original study.
- To reaffirm the soundness of paleolimnological methods and data interpretation.
Main Methods:
- Utilizing recurrent aerial surveys and ground observations dating back to the 1970s.
- Incorporating expert statements from veteran Arctic scientists with long-term field experience.
- Referencing established scientific consensus from the 1980s and 1990s on paleolimnological techniques.
Main Results:
- The microclimate classification scheme is supported by extensive observational data.
- Criticisms regarding climate, catchment characteristics, and ice melt were refuted by experts.
- Methodologies for radioisotopic dating, core chronology, and bioindicator preservation are validated.
Conclusions:
- The microclimate classification and methodologies in Griffiths et al. (2017) are scientifically sound.
- The study's findings on diatom assemblage responses to warming in Arctic lakes are robust.
- Extensive historical data and expert consensus support the original research.