The remaining species were all commonly associated with sand prairies, and were mostly present in low numbers, being restricted to the small openings between the bunchgrasses
. The only exotic species encountered in the plots was Mollugo verticillata (carpetweed) that occurred in very low numbers (Table 1).
Sheep fescues are bunchgrasses
, while red fescues have a slow, spreading growth habit.
Gaps in the scrub (areas devoid of shrub canopy) and ecotone (bare areas between perennial bunchgrasses
) were relatively persistent, and those observed in early spring lasted through mid-summer 1995 [ILLUSTRATION FOR FIGURES 3B, C OMITTED].
Ironically, both parthenogens require habitats with at least some disturbance to promote the growth of bunchgrasses
and weeds and to open up bare patches of ground (Walker 1987 a, 1987b) and can even live in habitats which have no vegetation other than a few scattered clumps of weeds (Walker 1987c; Walker & Cordes 1990).
The California Native Plant Society is currently lobbying the state parks department to acquire several hundred acres just outside the privately owned ranch for a preserve that would protect the 72 species of wildflowers growing there, as well as native bunchgrasses
A variety of halophytic plants were at Tamaulipan sites, including bunchgrasses
, prostrate creepers, succulents, and thorny plants (e.g., water hyssop Bacopa, legume Mimosa, legume Sophora, sea oats Uniola paniculata, beach morning glory Ipomoea pes-caprae, sea purslane Sesuvium portulaca, dropseed Sprobolus pyramidatus, Calliandria biflora, Cassia gregii, Cassia texana, golden dyssodia Dyssodia pentachaeta, shoregrass Monanthochloe littoralis, silverscale saltbush Atriplex argentea, Cortez's croton Croton cortesianus, and lamb's quarters Chenopodium murale).
Arrhenatherum includes a series of diploid and polyploid bunchgrasses
of primarily Eurasian origin with a base chromosome number of x = 7.
maculosa in western Montana are heavily colonized by AM fungi, and colonization levels are higher than some species of native bunchgrasses
that it frequently displaces (Marler 1997).
Ranchers should manage stocking rates so that bunchgrasses
can set adequate seed to sustain rodent populations, and so that cattle have adequate forage to prevent feeding on less preferred, sensitive plants such as saltbush.
As UC ecologist Pam Muick notes, "Native perennial bunchgrasses
have been choked out by introduced European annual grasses; deer, rodent, and squirrel populations have increased; fires and floods, which were once a part of the natural ecosystem, now rarely occur.
gularis at T-13 (++) at Ejido Guadalupe; the habitat there consisted of narrow trails through thick growths of bunchgrasses
and weeds, and roadsides.
Open patches of grassland on both sites were dominated by bunchgrasses
, including Arizona fescue (Festuca arizonica) and blue gramma (Bouteloua gracilis).
, tail legumes, prostrate rhizomatous grasses, and stoloniferous legumes grow to different heights with different dry matter distribution in the sward, and therefore provide different amounts of forage accessible to grazing animals.
The rapid germination of this introduced annual grass may at least partly explain apparent reductions due to competition of populations of many native perennial bunchgrasses
which coexist with cheatgrass (Young and Evans, 1978; Morrow and Stahlman, 1984; Billings, 1990).
In the troughs between the dunes (interdune areas), you'll find scurf-pea and "blowout" or bunchgrasses
, and at dune edges, taller shrubby plants like creosote bush, four-winged saltbush, honey mesquite.