Journal ArticleDOI
Vegetation of the Siskiyou Mountains, Oregon and California
TLDR
Forest Vegetation of Higher Elevations on Diorite and the Two-Phase Ef fect .......... .............. . 299 Forest Vegetation in Transects.Abstract:
II. PROCEDURE .................................. 285 Study Areas ................................. 285 Vegetation Samples and Soil Data ..... ..... 286 Arrangement of Samples in Transects .... . 286 Evaluation of Transect Techniques . ..... . 288 Transect Tables ................... ....... 289 III. VEGETATION DESCRIPTION ...... ............. 291 Low Elevations on Diorite . ... ......... .. 291 Low Elevations on Gabbro ..... ........ 297 Low Elevations on Serpentine and the Two-Phase Ef fect .......... .............. . 299 Forest Vegetation of Higher Elevations on Diorite ......................... ....... 302 Vegetation of Higher Elevations on Serpentine . . 305read more
Citations
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Book
Ecological Diversity and its Measurement
TL;DR: In this paper, the authors define definitions of diversity and apply them to the problem of measuring species diversity, choosing an index and interpreting diversity measures, and applying them to structural and structural diversity.
Book ChapterDOI
Detrended correspondence analysis: an improved ordination technique
M. O. Hill,Hugh G. Gauch +1 more
TL;DR: DCA consistently gives the most interpretable ordination results, but as always the interpretation of results remains a matter of ecological insight and is improved by field experience and by integration of supplementary environmental data for the vegetation sample sites.
Journal ArticleDOI
Global patterns in biodiversity
TL;DR: This work states that the distribution of biodiversity across the Earth can be described in terms of a relatively small number of broad-scale spatial patterns, and theory is developing rapidly, improving in its internal consistency, and more readily subjected to empirical challenge.
Journal ArticleDOI
Effects of habitat fragmentation on birds and mammals in landscapes with different proportions of suitable habitat: a review
TL;DR: Simulations of patterns and geometry of landscapes with decreasing proportion of the suitable habitat give rise to the prediction that the effect of habitat fragmentation on e.g. population size of a species would be primarily through habitat loss in landscape with a high proportion of suitable habitat.
References
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Journal ArticleDOI
Measurement of diversity
TL;DR: In this article, the authors define and examine a measure of concentration in terms of population constants, and examine the relationship between the characteristic and the index of diversity when both are applied to a logarithmic distribution.
Journal ArticleDOI
An Ordination of the Upland Forest Communities of Southern Wisconsin
Roger H. Bray,John T. Curtis +1 more
TL;DR: It is shown that nature of unit variation is a naajor problenl in systematies, and that whether this variation is diserete, continuous, or in some other form, there is a need for appliGation of (uantitative and statistical methods.
Journal ArticleDOI
The Relation Between the Number of Species and the Number of Individuals in a Random Sample of an Animal Population
TL;DR: It is shown that in a large collection of Lepidoptera captured in Malaya the frequency of the number of species represented by different numbers of individuals fitted somewhat closely to a hyperbola type of curve, so long as only the rarer species were considered.
Journal ArticleDOI
The Use of Distance Measures in Phytosociological Sampling
Grant Cottam,John T. Curtis +1 more