Vegetation history and paleoclimates of the coastal lowlands of Sonora, Mexico - pollen records from packrat middens

Scott R Anderson, Thomas R. Van Devender

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Fossil pollen from packrat (Neotoma sp.) middens indicate that elements of the modern Sonoran Desert, such as Bursera microphylla (elephant tree), have been established within the Sierra Bacha of Sonora, Mexico, for the last 10,000 years. However, Fouquieria columnaris (boojum tree) grew on xeric east-facing slopes prior to c. 9000 years ago, indicating locally stronger upwelling or greater effective precipitation over modern conditions. Nearmodern environments were established sometime prior to c. 5400 years ago. The lack of correspondence between pollen-based vegetation reconstructions from middens and nearby marine sediment cores probably reflects different source areas for the pollen.

Original languageEnglish (US)
Pages (from-to)295-306
Number of pages12
JournalJournal of Arid Environments
Volume30
Issue number3
DOIs
StatePublished - 1995

Fingerprint

midden
vegetation history
Bursera microphylla
paleoclimate
lowlands
pollen
Mexico
history
vegetation
Neotoma
Sonoran Desert
marine sediments
elephant
marine sediment
sediment core
upwelling
fossils
desert
fossil

Keywords

  • packrat middens
  • paleoclimates
  • plant macrofossils
  • pollen
  • Sonora
  • Sonoran desert

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Earth-Surface Processes
  • Ecology

Cite this

Vegetation history and paleoclimates of the coastal lowlands of Sonora, Mexico - pollen records from packrat middens. / Anderson, Scott R; Van Devender, Thomas R.

In: Journal of Arid Environments, Vol. 30, No. 3, 1995, p. 295-306.

Research output: Contribution to journalArticle

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