Pollen Evidence for Historic Sedimentation Rates in Batiquitos Lagoon, San Diego County, California
Author: Herbert William Meyer
Publisher:
Published: 1980
Total Pages: 160
ISBN-13:
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Author: Herbert William Meyer
Publisher:
Published: 1980
Total Pages: 160
ISBN-13:
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Publisher:
Published: 1990
Total Pages: 478
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DOWNLOAD EBOOKAuthor: Joy B. Zedler
Publisher:
Published: 1982
Total Pages: 128
ISBN-13:
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Publisher:
Published: 1990
Total Pages: 460
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Publisher:
Published: 1987
Total Pages: 122
ISBN-13:
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Publisher:
Published: 1992
Total Pages: 1544
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DOWNLOAD EBOOKAuthor: Samuel Safran
Publisher:
Published: 2017-01-31
Total Pages: 228
ISBN-13: 9780990898597
DOWNLOAD EBOOKThe Tijuana River Valley Historical Ecology Investigation synthesizes hundreds of historical maps, photographs, and texts to reconstruct the ecological, hydrological, and geomorphic conditions of the Tijuana River valley prior to major European-American landscape modification. How did the valley look and function before there was the state of California, the city of Tijuana, or an international border? What habitat types and wildlife were found there? How have these habitat types and the physical processes that shaped them changed over time? And finally, what can the valley's ecological past tell us about its present and future? In answering these fundamental questions, this richly-illustrated study provides scientists, managers, and residents in the valley with information designed to support and inspire ongoing management and restoration activities.
Author: Alfred Louis Kroeber
Publisher:
Published: 1909
Total Pages: 50
ISBN-13:
DOWNLOAD EBOOKAuthor: Simon A. Levin
Publisher: Springer Science & Business Media
Published: 2013-03-13
Total Pages: 637
ISBN-13: 3642501249
DOWNLOAD EBOOKFrom a mathematical point of view, physiologically structured population models are an underdeveloped branch of the theory of infinite dimensional dynamical systems. We have called attention to four aspects: (i) A choice has to be made about the kind of equations one extracts from the predominantly verbal arguments about the basic assumptions, and subsequently uses as a starting point for a rigorous mathematical analysis. Though differential equations are easy to formulate (different mechanisms don't interact in infinites imal time intervals and so end up as separate terms in the equations) they may be hard to interpret rigorously as infinitesimal generators. Integral equations constitute an attractive alternative. (ii) The ability of physiologically structured population models to increase our un derstanding of the relation between mechanisms at the i-level and phenomena at the p-level will depend strongly on the development of dynamical systems lab facilities which are applicable to this class of models. (iii) Physiologically structured population models are ideally suited for the for mulation of evolutionary questions. Apart from the special case of age (see Charlesworth 1980, Yodzis 1989, Caswell 1989, and the references given there) hardly any theory exists at the moment. This will, hopefully, change rapidly in the coming years. Again the development of appropriate software may turn out to be crucial.