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Choosing a DIVA: a comparison of emerging digital imagery vegetation analysis techniques

Applied Vegetation Science

By:
, , , , , , and
DOI: 10.1111/avsc.12037

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Abstract

Question: What is the precision of five methods of measuring vegetation structure using ground-based digital imagery and processing techniques? Location: Lincoln, Nebraska, USA Methods: Vertical herbaceous cover was recorded using digital imagery techniques at two distinct locations in a mixed-grass prairie. The precision of five ground-based digital imagery vegetation analysis (DIVA) methods for measuring vegetation structure was tested using a split-split plot analysis of covariance. Variability within each DIVA technique was estimated using coefficient of variation of mean percentage cover. Results: Vertical herbaceous cover estimates differed among DIVA techniques. Additionally, environmental conditions affected the vertical vegetation obstruction estimates for certain digital imagery methods, while other techniques were more adept at handling various conditions. Overall, percentage vegetation cover values differed among techniques, but the precision of four of the five techniques was consistently high. Conclusions: DIVA procedures are sufficient for measuring various heights and densities of standing herbaceous cover. Moreover, digital imagery techniques can reduce measurement error associated with multiple observers' standing herbaceous cover estimates, allowing greater opportunity to detect patterns associated with vegetation structure.

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Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Choosing a DIVA: a comparison of emerging digital imagery vegetation analysis techniques
Series title:
Applied Vegetation Science
DOI:
10.1111/avsc.12037
Volume
16
Issue:
4
Year Published:
2013
Language:
English
Publisher:
Wiley
Contributing office(s):
Nebraska Cooperative Fish and Wildlife Research Unit
Description:
9 p.
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Applied Vegetation Science
First page:
552
Last page:
560
Country:
United States
State:
Nebraska
City:
Lincoln