A visual obstruction technique for photo monitoring of willow clumps

Rangeland Ecology and Management

Volumn 58, Issue 4, 2005, Pages 434-438

  Boyd, Chad S ^a   Svejcar, Tony J ^a  

^a AGRICULTURAL RESEARCH SERVICE   (United States)

Author keywords

Browsing; Image analysis; Revegetation; Utilization

Indexed keywords

BIOMASS; BROWSING; QUANTITATIVE ANALYSIS; REVEGETATION;

SALIX; SALIX BOOTHII;

EID: 23744504202     PISSN: 15507424     EISSN: None     Source Type: Journal    
DOI: 10.2111/1551-5028(2005)058[0434:AVOTFP]2.0.CO;2     Document Type: Article

References (13)

1. ANSLEY, R. J., D. J. PRICE, B. K. LAWRENCE, AND P. W. JACOBY. 1988. A truck-mounted mobile screen for photodigital estimation of whole plant leaf area. Journal of Range Management 41:355-358.
2. BOBEK, B., AND R. BERGSTROM. 1978. A rapid method of browse biomass estimation in a forest habitat. Journal of Range Management 31:456-458.
3. BRYANT, F. C., AND M. M. KOTHMANN. 1979. Variability in predicting edible browse from crown volume. Journal of Range Management 32:144-146.
4. HALL, F. C., AND T. MAX. 1999. Technical note: test of observer variability in measuring riparian shrub twig length. Journal of Range Management 52: 633-636.
5. HARNISS, R. O., AND R. B. MURRAY. 1976. Reducing bias in dry leaf weight estimates of big sagebrush. Journal of Range Management 29:430-432.
6. KEIGLEY, R. B., AND M. R. FRISINA. 1998. Browse evaluation by analysis of growth form. Volume I: Methods for evaluating condition and trend. Helena, MT: Montana Fish, Wildlife, and Parks. 153 p.
7. NUDDS, T. D. 1977. Quantifying the vegetative structure of wildlife cover. Wildlife Society Bulletin 5:113-117.
8. REYNOLDS, M. P. 1999. Residual leaf area as a measure of shrub use [MS thesis]. Corvallis, OR: Oregon State University. 104 p.
9. ROBEL, R. J., J. N. BRIGGS, A. D. DAYTON, AND L. C. HULBERT. 1970. Relationships between visual obstruction measurements and weight of grassland vegetation. Journal of Range Management 23:295-297.
10. ROSGEN, D. L. 1994. A classification of natural rivers. Catena 22:169-199.
11. [SAS] STATISTICAL ANALYSIS SYSTEMS. 1999. SAS procedures guide, release 8.0. Cary, NC: SAS Institute, Inc. 1675 p.
12. VERMEIRE, L. T., AND R. L. GILLEN. 2002. A robust model for estimating standing crop across vegetation types. Journal of Range Management 55:494-497.
13. WINWARD, A. H. 2000. Monitoring the vegetation resources in riparian areas. Ogden, UT: US Department of Agriculture Forest Service General Technical Report RMRS-GTR-47. 49 p.