Early Holocene juniper woodland and chaparral taxa in the Central Baja California peninsula, Mexico

被引：41

作者：

Rhode, D ^{[1
]}

机构：

[1] Desert Res Inst, Reno, NV 89512 USA

来源：

QUATERNARY RESEARCH | 2002年 / 57卷 / 01期

关键词：

packrat middens; Neotoma; Baja California; early Holocene; chaparral; Juniperus californica;

D O I：

10.1006/qres.2001.2287

中图分类号：

P9 [自然地理学];

学科分类号：

0705 ; 070501 ;

摘要：

A packrat midden located in the Sierra San Francisco, Baja California Sur, Mexico, dating to ca. 10,200 C-14 yr B.P, contains remains of California juniper (Juniperus californica) and other taxa now associated with southern California chaparral. California juniper does not occur in the Sierra San Francisco today, although "relict" populations of a few chaparral taxa still occur at higher elevations. This midden record documents the early Holocene occurrence of Baja California coniferous woodland and chaparral vegetation far south of its present distribution or its previously known extent from other fossil records. Based on modern climatic tolerances of California juniper and other taxa, central Baja California experienced a mild Mediterranean-type climate at least 5degrees-6degreesC cooler than the climate of today, with at least twice the winter precipitation the region now receives. (C) 2002 University of Washington.

引用

页码：102 / 108

页数：7

共 55 条

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