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    • Journal of Range Management, Volume 47 (1994)
    • Journal of Range Management, Volume 47, Number 6 (November 1994)
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    Range assessment using remote sensing in Northwest Patagonia (Argentina)

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    Author
    Paruelo, J. M.
    Golluscio, R. A.
    Issue Date
    1994-11-01
    Keywords
    Nassauvia
    nassauvia glomerulosa
    normalized difference vegetation index
    festuca pallescens
    desertification
    Festuca
    water balance
    ground vegetation
    remote sensing
    satellite imagery
    indexes
    shrubs
    Argentina
    canopy
    grasses
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    Citation
    Paruelo, J. M., & Golluscio, R. A. (1994). Range assessment using remote sensing in Northwest Patagonia (Argentina). Journal of Range Management, 47(6), 498-502.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/644454
    DOI
    10.2307/4003005
    Additional Links
    https://rangelands.org/
    Abstract
    A methodology based on remotely sensed data (LANDSAT MSS) was used for rapid assessment of rangelands in the grass and shrub steppes of NW Patagonia (Argentina). We calibrated Normalized Difference Vegetation Index (NDVI) data using total plant cover, grass cover, shrub cover, and floristic data. Total vegetation cover and grass cover was predicted with high accuracy from Normalized Difference Vegetation Index data. The correlation between observed and estimated cover was 0.87 and 0.82 (P < 0.01) for total cover and grass cover respectively. The correlation was lower for shrub cover than for grass (r = 0.45, p < 0 .01). Normalized Difference Vegetation Index data was used to accurately predict cover of Festuca pallescens (St. Yves) Parodi (coiron blanco) and Nassau via glomerulosa (Lag.) Don (colapiche), 2 species with contrasting response to grazing in the Occidental district of Patagonia, and typical of vegetation with very different grazing values. The correlation between observed and estimated from the Normalized Difference Vegetation Index cover was 0.67 and 0.53 (P < 0.01) for Festuca pallescens (coiron blanco) and Nassauvia glomerulosa (colapiche) respectively.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/4003005
    Scopus Count
    Collections
    Journal of Range Management, Volume 47, Number 6 (November 1994)

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