Invertebrate herbivory is suggested to modulate community shifts caused by climate warming in grasslands. However, experimental evidence lacking, especially high elevation areas. We examined the interactive effect of and grassland caterpillar Gynaephora alpherakjj, a typical invertebrate herbivorous insect with sedge preference, on structure plant sedge-dominated alpine meadow Tibetan Plateau. ...

KRASZEWSKI, S. E. (Land Resources Program, University of Wisconsin-Madison, Madison, WI 53706) AND D. M. WALLER. (Department of Botany, University of Wisconsin-Madison, Madison, WI 53706). Fiftyfive year changes in species composition on dry prairie remnants in south-central Wisconsin. J. Torrey Bot. Soc. 135: 236–244. 2008.—Ten dry prairie remnants in south-central Wisconsin first sampled in 1...

A flatwoods longleaf pine wiregrass ecosystem, which regenerated naturally following wildfire in 1942, on the Coastal Plain of southern Georgia was treated over a period of four decades with prescribed fire at annual, biennial and triennial intervals during the winter dormant season. Burning caused substantial changes in the understory plant community, with significant reductions in the folk co...

Recent findings indicate that atmospheric warming increases the persistence of weather patterns in mid-latitudes, resulting sequences longer dry and wet periods compared to historic averages. The alternation progressively extremes could increasingly select for species with a broad environmental tolerance. As consequence, biodiversity may decline. Here we explore relationship between summer prec...

The increased population density of rodent species during ongoing grassland degradation further deteriorates its conditions. Understanding the effects on feeding habits is great value for optimizing management strategies. In this study, lightly degraded (LD), moderately (MD), severely (SD), and reseeded (RG) were selected their plant resources soil physical properties investigated. addition, st...

endozoochory is one of the seed dispersal modes through animal’s digestive systems transmission and the increases rate germination and plant establishment. the aim of this study, investigated the relationship between seed characteristics and the passage through the digestive tract of livestock and domestic animals (cattle, sheep and goats) in the 7 species perennial grass 8 species perennial fo...

abiotic factors, as topographic and physicochemical properties of soil, are the most important effective factor on vegetation in rangeland ecosystems which have the most important performances to forming and succession of plant vegetation. ecologic management of rangelands can be desired by better understanding of these effective factors. then, rangeland of javaherdeh (ramsar) in the northern a...