Possible sources of variation in the working of seed predation includes: (1) grass litter or "mulch" acting as a shelter for seed predators and increasing predation (Reader, 1990; Reed et al., 2006), (2) seed predators preferring some seed species over others (Myster and Pickett, 1993; Myster, 1997; Myster, 2003), (3) predators responding to differences in seed density (Myster and Pickett, 1993), (4) season of the year affecting seed predation (Lindroth and Batzli, 1984) and (5) because much of the research has focused on tall-grass
prairie (Collins and Adams, 1983; Knapp et al., 1998) with few examples in other grassland types (Reed et al., 2006), predation levels differing among prairie-types.
for the Motion Picture Arts, which sponsors the Tall-grass
(Sans Culottes in the Promised Land); Rinne Groff of New York City (The Ruby Sunrise); and Melanie Marnich, also of Minneapolis (Tall-grass
Dominance types were grouped based on plant functional characteristics (annual, perennial, biennial; warm season, cool season; short-, mid- , or tall-grass
) of the dominant species.
In seven states once covered with grasslands, less than 1 percent of tall-grass
Located five miles from downtown Oklahoma City, the base was born on a tall-grass
prairie during World War II.
Partly as a result of these classic restoration efforts, it is now clear that tall-grass
prairies depend upon fire, and that the many plants and animals which make it up are adapted to fire in many ways.
Just as unchecked algal growth can choke out native aquatic species, so overfertilized weeds began choking out native tall-grass
"The Custer will use an ecosystem approach for management and restoration of the tall-grass
prairie ecosystem on the Sheyenne National Grassland," says Forest Range Conservationist Jeff DiBenedetto.
Katherine Ordway gave the money and directions for preservation of some less spectacular but most interesting lands -the tall-grass
The fires burn primarily in tall-grass
savannas, in tropical rain forests and on farms around the world.