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A.1356 | EcoArt 2002
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Name: A.1356
Reference: EcoArt 2002
Description: Vegetation in this alliance is dominated by perennial grasses. Grasslands in this alliance occur in draws and arroyos in southwestern New Mexico. Elevation ranges from 1400-1900 m in areas upland of the Chihuahuan desertscrub. Climate is semi-arid with most of the 25-43 cm of precipitation falling during the late summer and early fall monsoon period. Because stands of this alliances are usually found in draws, these grasslands are temporarily flooded with runoff and gully flow during the typically high-intensity convection storms common during the monsoon season. These minor grasslands are restricted to these relatively mesic sites and are tolerant of the disturbance caused by gully erosion. One stand in this alliance had ground cover of 5% bare soil, 5% gravel, 25% rock, 60% litter, and 5% vegetation. The substrate is derived from rhyolite. This semi-desert grassland has a dense graminoid layer that is usually dominated by the perennial bunchgrass ~Panicum bulbosum$. ~Alopecurus aequalis$ and/or ~Lycurus phleoides$ may codominate with ~Panicum bulbosum$. Several other graminoid species are often present but do not add up to much cover. Forbs are usually very sparse. Scattered shrub and tree species, such as ~Cercocarpus montanus$ and ~Fraxinus velutina$, may also be present. One stand had canopy cover of 20% ~Panicum bulbosum$ and 40% ~Alopecurus aequalis$. Other graminoids included ~Cyperus parishii, Eleocharis macrostachya, Leptochloa dubia, Panicum hirticaule var. stramineum (= Panicum stramineum), Setaria grisebachii$, and others. 
Accession Code: VB.CC.1130.A1356
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 26-Nov-1997 to: 17-Mar-2005
     
  • status: accepted
  • Community's Parent: V.A.5.N.j
  • This Community's Level: Alliance
  • This Community's Children: [none]
Names:   Scientific: PANICUM BULBOSUM TEMPORARILY FLOODED HERBACEOUS ALLIANCE
  Code: A.1356
  Common: Bulb Panicgrass Temporarily Flooded Herbaceous Alliance
(convergence) and Synonyms:
(undetermined) Panicum bulbosum Temporarily Flooded Herbaceous Alliance