Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 227

The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.

Late Pleistocene Temperature Depression and Vegetation Change in Ecuadorian Amazonia

Bush, Mark B., Colinvaux, Paul A., Wiemann, Michael C., Piperno, Dolores R., Liu, Kam-biu·1990·Quaternary Research

Abstract

Paleoecological (pollen, phytolith, and wood) analyses of sediments, radiocarbon dated 33,000 to 26,000 yr B.P., from two sites in Ecuadorian Amazonia provide data that suggest a cooling of ca. 7.5°C below present in equatorial lowlands from 33,000 to 30,000 yr B.P. A period of warning followed in which novel species assemblages, a blend of montane and lowland floral components, persisted for at least 4000 years. These data of forest community change, from sites lying within the postulated glacial rain forest Napo refugium, provide the strongest paleoecological refutation of the refugial hypothesis yet obtained. The large temperature depression at ca. 30,000 yr B.P. allows the possibility that if maximum cooling at the equator was synchronous with the last glacial maximum (LGM) of the northern hemisphere, freezing temperatures would have been experienced in parts of lowland Amazonia between 25,000 and 18,000 B.P.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1016/0033-5894(90)90045-m

Cites

1 of 1 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cited by

See all 227

Metadata

Authors
Bush, M. B., Colinvaux, P. A., Wiemann, M. C., Piperno, D. R., & Liu, K.-B.
Venue
Quaternary Research
Published
1990-11
Volume
34
Issue
3
Pages
330-345
ISSN
  • 0033-5894 (ISSN-L)
  • 1096-0287
OpenAlex
W2162254731
Cited by
227
References
1
FWCI
8.47
Type
journal article
Language
en
Open access
closed

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review

How to cite

Cite CoChat for the checks on this page, and the paper for its own findings.

This page
CoChat. (2026). Citation check: Late Pleistocene Temperature Depression and Vegetation Change in Ecuadorian Amazonia. https://app.cochat.ai/papers/10.1016/0033-5894(90)90045-m
The paper
Bush, M. B., Colinvaux, P. A., Wiemann, M. C., Piperno, D. R., & Liu, K.-B. (1990). Late Pleistocene Temperature Depression and Vegetation Change in Ecuadorian Amazonia. Quaternary Research. https://doi.org/10.1016/0033-5894(90)90045-m

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.