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This volume is the proceedings of a symposium held on April 6-8,
1999, in San Francisco, CA, USA, and sponsored by the US
Environmental Protection Agency's (EPA) Environmental Monitoring
and Assessment Program (EMAP). EMAP is the primary program of the
EPA's Office of Research and Development to advance the science of
statistically-based ecosystem monitoring; and establish baseline
conditions and trends of the nation's natural resources. The first
volume in this series of EMAP-sponsored symposium proceedings
addressed Monitoring Ecological Condition at Regional Scales'
(1998). The current proceedings was the result of the EMAP
Symposium on Western Ecological Systems' (1999), and presaged the
new EMAP Western Pilot Study, which will include one third of the
contiguous United States. The information found in these
proceedings on the state of monitoring science, and existing
monitoring programs undertaken by Federal and State agencies,
academic institutions, tribal governments, and environmental
protection interest groups helped to establish a starting point for
embarking on the EMAP Western Pilot. This volume represents current
scientific and management approaches, and the results of monitoring
and assessment in the western US ecosystems. The chapter topics
include regional assessments, approaches to database design,
landscape considerations, water quality and land use, and focuses
on watersheds, lakes and rivers, and marine coastal areas.
Publication of these proceedings constitutes a sound starting point
for the assessment of the ecological resources in the western US
and will facilitate collaborative efforts in the development and
application of sound approaches to monitoring and assessment of
ecological resources in the US and abroad.
Nearly one-third of the land area on our planet is classified as
arid or desert. Therefore, an understanding of the dynamics of such
arid ecosystems is essential to managing those systems in a way
that sustains human populations. This second edition of Ecology of
Desert Systems provides a clear, extensive guide to the complex
interactions involved in these areas. This book details the
relationships between abiotic and biotic environments of desert
ecosystems, demonstrating to readers how these interactions drive
ecological processes. These include plant growth and animal
reproductive success, the spatial and temporal distribution of
vegetation and animals, and the influence of invasive species and
anthropogenic climate change specific to arid systems. Drawing on
the extensive experience of its expert authors, Ecology of Desert
Systems is an essential guide to arid ecosystems for students
looking for an overview of the field, researchers keen to learn how
their work fits in to the overall picture, and those involved with
environmental management of desert areas.
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