ISSN:
1573-5052
Schlagwort(e):
Classification
;
Discriminant analysis
;
Family composition
;
Indicator families
;
Phytogeography
;
Principal components analysis
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Biologie
Notizen:
Summary The distributions of 54 plant families in 105 samples were studied to determine their indicator value in the vegetation of the Pacific Northwest. Families may be characteristic of particular environments or geographic conditions or they may distinguish between sets of samples. Principal components analysis, numerical classification, and stepwise discriminant analysis were used in this study. Principal components analysis identifies a family if it is common or dominant and has a distribution concentrated at one extreme of an axis of variation. Families with consistent patterns of distribution are useful in distinguishing between groups of samples previously created by numerical classification methods. Twenty-three families that contain environmental, successional, or geographical information were identified according to one or more methods.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00055212
Permalink
