reperfusion
发表于 2025-3-26 23:00:32
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黄油没有
发表于 2025-3-27 04:52:17
Grant Cottam,F. Glenn Goff,R. H. Whittakerly aware that comparatively few women achieve leading positions in the sciences. In seeking the reasons for this, much can be ascribed to tradition and, not yet everywhere legally overthrown, discrimination against women — much, but not all. There are countries, and in this respect my own country ha
insurrection
发表于 2025-3-27 07:04:34
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寻找
发表于 2025-3-27 12:36:01
Book 1978ities (or samples representing these) into groups, and ordination (or arrangement) of samples in relation to environmental variables. A book published in 1973, ‘Ordination and Classification of Communities,‘ sought to provide, through contributions by an international panel of authors, a coherent tr
deriver
发表于 2025-3-27 14:31:26
Retrogression and Coenocline Distanceprogressive changes in environment during succession may be considered a seral complex-gradient (though successions differ widely in the degree of environmental modification they entail). A succession is thus an ecocline in time, comprising a parallel and functionally related coenocline and complex-gradient.
脆弱吧
发表于 2025-3-27 17:46:04
Russian (Ramensky) Approaches to Community Systematizationf systematizing objects — namely classification — is concerned, . did not rule it out; but he criticized contemporary methods of classification of plant communities and asserted that it must not be separated from classification of other components of the biocoenose-ecosystem.
ordain
发表于 2025-3-27 22:45:21
Sample Similarity and Species Correlationy be recognized, and it is through the fact that stands include a number of correlated species that they are recognized as similar. General discussions of these questions will be found in a number of books, such as those of . (1964), . (1969b), . (1969) and . (1969).
ineptitude
发表于 2025-3-28 02:46:57
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FLINT
发表于 2025-3-28 10:16:34
Factor Analysis. 1950, . & . 1956, . 1955, . & . 1963), and at present, factor analysis stands among the methods of multivariate statistical analysis, along with component analysis, discriminant analysis and analysis of variance.
小母马
发表于 2025-3-28 12:19:43
Ordination by Resemblance Matricestion are those of composition between communities or with environmental variables. Ordination methods are as varied as continuum analysis, component analysis, factor analysis, and many more, which differ greatly both in underlying theory and also in practical effectiveness (cf. . 1960, . 1967, . 1967, . & . 1969, . 1975 and references therein).