Habitat Preferences And Distribution Of Mammals In California Chaparral

Forty-nine species of mammals regularly occur in California chaparral, but none lives only in chaparral. Among the 49 species, 7 are found primarily in mature chaparral, 9 in young chaparral or along ecotones between chaparral and other plant communities, and 19 in riparian areas. Five species occur in many habitats but prefer chaparral in California, and 9 have wide ranges that encompass many communities including chaparral. By altering the structure of the plant community, fire in chaparral is important in determining the distribution and abundance of mammalian populations. Fire is not permanently destructive to the mammalian fauna. Wildlife habitat can be optimized by maintaining chaparral in many age classes, by restricting fuel reduction treatments to 1 to 100 ha, by protecting all trees, and by enhancing water sources. A given area of chaparral and contains two to four common, and two to nine total, species of rodents. Seeds, fruits, and young vegetative growth are the most important plant foods in chaparral. Only 12 species of mammals are endemic to chaparral because of the limited opportunity in both time and space for speciation to occur. Only kangarro rats (Dipodomys) and chipmunks (Eutamias) have speciated in chaparral.

Forty-nine species of mammals regularly occur in California chaparral, but none lives only in chaparral. Among the 49 species, 7 are found primarily in mature chaparral, 9 in young chaparral or along ecotones between chaparral and other plant communities, and 19 in riparian areas. Five species occur in many habitats but prefer chaparral in California, and 9 have wide ranges that encompass many communities including chaparral. By altering the structure of the plant community, fire in chaparral is important in determining the distribution and abundance of mammalian populations. Fire is not permanently destructive to the mammalian fauna. Wildlife habitat can be optimized by maintaining chaparral in many age classes, by restricting fuel reduction treatments to 1 to 100 ha, by protecting all trees, and by enhancing water sources. A given area of chaparral and contains two to four common, and two to nine total, species of rodents. Seeds, fruits, and young vegetative growth are the most important plant foods in chaparral. Only 12 species of mammals are endemic to chaparral because of the limited opportunity in both time and space for speciation to occur. Only kangarro rats (Dipodomys) and chipmunks (Eutamias) have speciated in chaparral.

Chaparral shrubland ecosystems are an iconic feature of the California landscape, and a highly biodiverse yet highly flammable backdrop to some of the fastest growing urban areas in the United States. Chaparral-type ecosystems are a common element of all of the world’s Mediterranean-type climate regions – of which California is one – yet there is little public appreciation of the intrinsic value and the ecosystem services that these landscapes provide. Valuing Chaparral is a compendium of contributions from experts in chaparral ecology and management, with a focus on the human relationship with chaparral ecosystems. Chapters cover a wide variety of subjects, ranging from biodiversity to ecosystem services like water provision, erosion control, carbon sequestration and recreation; from the history of human interactions with chaparral to current education and conservation efforts; and from chaparral restoration and management to scenarios of the future under changing climate, land use, and human population. Valuing Chaparral will be of interest to resource managers, the research community, policy makers, and the public who live and work in the chaparral dominated landscapes of California and other Mediterranean-type climate regions.

Mediterranean-type ecosystems have provided ecologists with some of the most scientifically-rewarding opportunities to formulate and evaluate hypotheses about large and small-scale ecological phenomena. Comparison of mediterranean-type climate ecosystems in different parts of the world has not only permitted a strong test for ecological convergence, but also critical understanding of key ecophysiological and population processes.

Soil and cambium temperatures must be known to ascertain certain effects of prescribed fires on trees. Thermocouple-based systems were devised for measuring soil and cambium temperatures during prescribed fires. The systems, which incorporate both commercially available and custom components, perform three basic functions: data collection, data retrieval, and data translation. Although the systems and procedures for using them were designed for research purposes, they could be adapted for monitoring operational prescribed fires.