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Identification and siting of native vegetation types on disturbed land : demonstration of statistical methods
Author
Aho, Ken
Weaver, T
Regele, S
Publisher
Applied Vegetation Science
Publication Year
2011
Body

Question: How does one best choose native vegetation types and site them in reclamation of disturbed sites ranging from cropland and strip mines?Application: World-wide, demonstrated in SE Montana. Methods: We assumed that pre-disturbance native communities are the best targets for revegetation, and that the environmental facet each occupies naturally provides its optimal habitat. Given this assumption, we used pre-strip-mine data (800 points from a 88km2 site) to demonstrate statistical methods for identifying native communities, describing them, and determining their environments.Results and conclusions: Classification and pruning analysis provided an objective method for choosing the number of target community types to be used in reclamation. The composition of eight target types, identified with these analyses, was described with a relevé table to provide a species list, target cover levels and support the choice of species to be seeded.As a basis for siting communities, we modeled community presence as a function of topography, slope/aspect, and substrate. Logistic GLMs identified the optimal environment for each community. Classification and Regression Tree (CART) analysis identified the most probable community in each environmental facet. Topography and slope were generally the best predictors in these models. Because our analyses relate native vegetation to undisturbed environments, our results may apply best to sites with minimal substrate disturbance (i.e. better to abandoned cropland than to strip-mined sites).

Language
English
Resource Type
Text
Document Type
Journal Issue/Article
Journal Volume
14
Journal Number
2
Journal Pages
277-290
Collection
Southern Africa Collection
Journal Name
Applied Vegetation Science
Keywords
Cart
classification
GLM
Native community environments
Native community types (grassland
forest)
ordination
Pruning analysis
reclamation
Seed mixes
Statistical methods for reclamation
restoration ecology
mine rehabilitation
releves
Montana
USA