Climate and vegetation patterns in surface samples from arid western U.S.A. Application to Holocene climatic reconstructions

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Abstract

Nearly 1,400 samples from over 50 sources have been assembled and analyzed to characterize the contemporary pollen rain of the arid western U.S.A. Of the nearly 300 pollen types recorded, Pinus, Quercus, and Cupressaceae are the most common arboreal types; Chenopodiaceae-Amaranthus. Gramineae, Artemisia, Ambrosia, and “Other Compositae”; are the most frequent non-arboreal pollen types. Forest vegetation is represented by 661 samples, steppe by 450 samples, and desert by 116 samples. Ambrosia, Cactaceae, Cruciferae, Leguminosae, Larrea, Malvaceae, Nyctaginaceae, and Prosopis achieve maximum percentages in hot - dry climate (>20°C mean annual temperature and 2000 mm). The frequency distribution of dissimilarity values among vegetation types is similar to that of other surface sample studies, with squared-chord-distances

Original languageEnglish (US)
Pages (from-to)95-117
Number of pages23
JournalPalynology
Volume19
Issue number1
DOIs
StatePublished - 1995

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pollen
Holocene
pollen rain
vegetation
climate
steppe
vegetation type
desert
temperature
distribution

ASJC Scopus subject areas

  • Palaeontology

Cite this

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title = "Climate and vegetation patterns in surface samples from arid western U.S.A.: Application to Holocene climatic reconstructions",
abstract = "Nearly 1,400 samples from over 50 sources have been assembled and analyzed to characterize the contemporary pollen rain of the arid western U.S.A. Of the nearly 300 pollen types recorded, Pinus, Quercus, and Cupressaceae are the most common arboreal types; Chenopodiaceae-Amaranthus. Gramineae, Artemisia, Ambrosia, and “Other Compositae”; are the most frequent non-arboreal pollen types. Forest vegetation is represented by 661 samples, steppe by 450 samples, and desert by 116 samples. Ambrosia, Cactaceae, Cruciferae, Leguminosae, Larrea, Malvaceae, Nyctaginaceae, and Prosopis achieve maximum percentages in hot - dry climate (>20°C mean annual temperature and 2000 mm). The frequency distribution of dissimilarity values among vegetation types is similar to that of other surface sample studies, with squared-chord-distances",
author = "Owen Davis",
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