يعرض 1 - 18 نتائج من 18 نتيجة بحث عن '"Shrub density"', وقت الاستعلام: 0.48s تنقيح النتائج
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    Academic Journal
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    Academic Journal
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    Academic Journal
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    Academic Journal
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    Book
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    Academic Journal
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    Academic Journal

    المؤلفون: Martin, S. Clark

    المصدر: Journal of Range Management, 1993 Mar 01. 46(2), 170-175.

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    Academic Journal

    المؤلفون: Smith, Michael A., Dodd, Jerrold L.

    المصدر: Journal of Range Management, 1993 Jan 01. 46(1), 56-64.

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    Dissertation/ Thesis
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    Academic Journal
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    Time: Study Area Name: Five Points Creosote Core Site Study Area Location : Five Points is the general area which emcompasses the Black Grama Grassland (known as Five Points Grassland) and Creosote Core (Five Points Larrea) study sites and the transition between Chihuahuan Desert Scrub and Desert Grassland habitats. Both core sites are subject to intensive research activities, including measurements of NPP, phenology, pollinator diversity, and ground dwelling arthropod and rodent populations. There are drought rain-out shelters in both the Grassland and Creosote sites, as well as another set in the mixed ecotone with co-located ET Towers. The grassland Small Mammal Exclosure Study is located here, as well as many plots related to patch mapping and biotic transitions. Elevation : 1615 m Vegetation : The Creosote Core site is characterized as Chihuahuan Desert Scrub, dominated by a creosotebush overstory, with broom snakeweed, purple pricklypear (O. macrocentra) and soapweed yucca as notable shrubs. The site is also characterized by numerous, dense grass dominated patches, reflecting proximity to the Black Grama Core site and the presumably recent appearance of creosotebush. Dominant grasses were black grama, fluffgrass (Dasyochloa pulchellum), burrograss (Scleropogon brevifolia), bushmuhly (M. porteri), and galleta (Pleuraphis jamesii). Notable forb species included field bahia (Bahia absinthifolia), baby aster (Chaetopappa ericoides), plains hiddenflower, Indian rushpea (Hoffmannseggia glauca), Fendlers bladderpod (Lesquerella fendleri), and globemallow., Study Area Name: Mixed Shrub (MS) Study Area Location : Site MSB and MSU are on the north side of the road that extends to the southeast from five points Elevation : 1640 m Vegetation : An area dominated by creosotebush (Larrea tridenta) but with also a relatively dense understory of black grama compared with a true shrubland. Site history : The northwest half of the site was burned in June 2003. The southeast half was used as the control. Plots were established in spring 2004., 2007-02-21 to 2008-10-23

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    Time: Study Area Name: Five Points Creosote Core Site Study Area Location : Five Points is the general area which emcompasses the Black Grama Grassland (known as Five Points Grassland) and Creosote Core (Five Points Larrea) study sites and the transition between Chihuahuan Desert Scrub and Desert Grassland habitats. Both core sites are subject to intensive research activities, including measurements of NPP, phenology, pollinator diversity, and ground dwelling arthropod and rodent populations. There are drought rain-out shelters in both the Grassland and Creosote sites, as well as another set in the mixed ecotone with co-located ET Towers. The grassland Small Mammal Exclosure Study is located here, as well as many plots related to patch mapping and biotic transitions. Elevation : 1615 m Vegetation : The Creosote Core site is characterized as Chihuahuan Desert Scrub, dominated by a creosotebush overstory, with broom snakeweed, purple pricklypear (O. macrocentra) and soapweed yucca as notable shrubs. The site is also characterized by numerous, dense grass dominated patches, reflecting proximity to the Black Grama Core site and the presumably recent appearance of creosotebush. Dominant grasses were black grama, fluffgrass (Dasyochloa pulchellum), burrograss (Scleropogon brevifolia), bushmuhly (M. porteri), and galleta (Pleuraphis jamesii). Notable forb species included field bahia (Bahia absinthifolia), baby aster (Chaetopappa ericoides), plains hiddenflower, Indian rushpea (Hoffmannseggia glauca), Fendlers bladderpod (Lesquerella fendleri), and globemallow., Study Area Name: Mixed Shrub (MS) Study Area Location : Site MSB and MSU are on the north side of the road that extends to the southeast from five points Elevation : 1640 m Vegetation : An area dominated by creosotebush (Larrea tridenta) but with also a relatively dense understory of black grama compared with a true shrubland. Site history : The northwest half of the site was burned in June 2003. The southeast half was used as the control. Plots were established in spring 2004., 2007-02-20 to 2009-02-19

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    Academic Journal

    المؤلفون: Cooper, C. F.

    المصدر: 10 ; 3 ; 111-115

    Relation: https://rangelands.org/; Cooper, C. F. (1957). The variable plot method for estimating shrub density. Journal of Range Management, 10(3), 111-115.; http://hdl.handle.net/10150/649814; Journal of Range Management

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    Academic Journal

    المؤلفون: Cooper, C.F.

    المصدر: Rangeland Ecology & Management / Journal of Range Management Archives; Vol 10, No 3 (May 1957); 111-115 ; 1550-7424 ; 0022-409X

    وصف الملف: application/pdf

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    Academic Journal
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    Academic Journal