Klamath Mountains Ecoregion: Chapter 13 in <i>Status and trends of land change in the Western United States--1973 to 2000</i>

Sleeter, Benjamin M., Calzia, James P.

Abstract:

The Klamath Mountains Ecoregion covers approximately 47,791 km² (18,452 mi²) of the Klamath and Siskiyou Mountains of northern California and southern Oregon (fig. 1) (Omernik, 1987; U.S. Environmental Protection Agency, 1997). The ecoregion is flanked by the Coast Range Ecoregion to the west, the Southern and Central California Chaparral and Oak Woodlands Ecoregion to the south, the Cascades and the Eastern Cascades Slopes and Foothills Ecoregions to the east, and the Willamette Valley Ecoregion to the north. The mild Mediterranean climate of the ecoregion is characterized by hot, dry summers and wet winters; the amount of winter moisture varies within the ecoregion, decreasing from west to east. The Klamath–Siskiyou Mountains region is widely recognized as an important biodiversity hotspot (Whittaker, 1960; Kruckeberg, 1984; Wagner, 1997; DellaSala and others, 1999), containing more than 3,500 plant species, more than 200 of which are endemic (Sawyer, 2007). A biological assessment by DellaSala and others (1999) ranked the Klamath–Siskiyou Mountains region as the fifth richest coniferous forest in terms of species diversity. In addition, the International Union for the Conservation of Nature considers the region an area of notable botanical importance (Wagner, 1997). Twenty-nine different species of conifers can be found in the Klamath Mountains Ecoregion (Sawyer, 1996).

Genre:

USGS Numbered Series

ProdID:

70042603

Citation Author:

Sleeter, Benjamin M., Calzia, James P.

Citation Contributing Office:

Western Geographic Science Center

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Citation End Page:

149

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Citation Language:

English

Citation Larger Work Title:

Status and trends of land change in the Western United States--1973 to 2000: Volume A in Status and trends of land change in the United States--1973 to 2000 (PP 1794-A)

Citation LatN:

44.0

Citation LatS:

39.0

Citation LonE:

-121.8

Citation LonW:

-124.5

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Citation Phsyical Description:

Chapter 13: 9 p.

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Citation Public Comments:

This publication is Chapter 13 in Status and trends of land change in the Western United States--1973 to 2000, which is Volume A in Status and trends of land change in the United States--1973 to 2000, PP 1794. Volume A consists of 30 chapters. For access to other chapters, please visit PP 1794-A.

Citation Publisher:

U.S. Geological Survey

Citation Series:

Professional Paper

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Citation Series Number:

1794-A-13

Citation Search Results Text:

Klamath Mountains Ecoregion: Chapter 13 in Status and trends of land change in the Western United States--1973 to 2000; 2012; PP; 1794-A-13; Status and trends of land change in the Western United States--1973 to 2000: Volume A in Status and trends of land change in the United States--1973 to 2000 (PP 1794-A); Sleeter, Benjamin M., Calzia, James P.