ISSN:
1573-5052
Schlagwort(e):
Baltic seashore
;
Canonical correspondence analysis
;
Disturbance
;
Fluctuation
;
Gradient analysis
;
Ordination
;
Seashore displacement
;
Succession
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Biologie
Notizen:
Abstract Field layer vegetation in four transects across a rising seashore of the island Skabbholmen (59°47′N, 19°12′E) in the Stockholm archipelago, eastern central Sweden, was sampled at the beginning and end of a six-year period. The data were analyzed by canonical correspondence analysis (CCA) with two external predictor variables, year of sampling and elevation (a proxy for the longer-term trend of change). During the sampling period, the vegetation changed in the direction of the longer-term trend at a rate consistent with the known rate of land uplift. However, a major part of the observed change was in a different direction, reflecting a shorter-term response to disturbance. The analysis effectively separated different types of floristic dynamics related to processes with different time-scales. A comparison with (unconstrained) correspondence analysis (DCA) illustrated the interpretive advantages of multivariate direct gradient analysis over conventional floristic ordination.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00038697
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