نتایج جستجو برای: grazed and ungrazed area

تعداد نتایج: 16875616  

Journal: :Eastern-European Journal of Enterprise Technologies 2022

The dryness of peatlands is influenced by the density vegetation. If are dry, they become vulnerable to a fire risk. To calculate drought index, professionals must conduct vegetation analysis. However, field analysis requires vast amounts resources. Moreover, accuracy based on satellite data not adequate. Therefore, this research presents drone-captured two-dimensional image data. object Liang ...

2010
Luke A. Bell Samuel D. Fuhlendorf Michael A. Patten Donald H. Wolfe Steve K. Sherrod

The structural attributes of shrubland communities may provide thermal refugia and protective cover necessary for wild animals to survive. During the summers of 2002 and 2003, we evaluated the thermal environment for lesser prairie-chicken (Tympanuchus pallidicinctus Ridgway) broods in southeast New Mexico across a complex landscape that included grazed sand shinnery oak (Quercus havardii Rydb....

2017
Sasha Gennet Erica Spotswood Michele Hammond James W Bartolome

Over eight years we measured the effects of plant community composition, vegetation structure, and livestock grazing on occurrence of three grassland bird species-Western Meadowlark (Sturnella neglecta), Horned Lark (Eremophila alpestris), and Grasshopper Sparrow (Ammodramus savannarum)-at sites in central California during breeding season. In California's Mediterranean-type climatic region, co...

2006
KATHLEEN A. FAGERSTONE

Between 1968 and 1978, aerial photography was used to monitor distribution of blacktailed prairie dog (Cynomys ludovicianus) colonies on a 400-square mile area in South Dakota, including parts of Buffalo Gap National Grassland, Pine Ridge Indian Reservation, and Badlands National Monument (now Badlands National Park). Aerial photographs were taken of the study area in 1968 and annually from 197...

Journal: :Journal of animal science 1991
P G Hatfield J W Walker H A Glimp D C Adams

Sixty wethers (average BW = 45 kg) fitted with fecal collection bags were used in four experiments to evaluate the ability of a intraruminal continuous-release chromic oxide bolus to predict fecal DM output. In Exp. 1, 18 wethers housed in metabolism crates were fed barley at either 0, 100, or 200g/d and allowed ad libitum consumption of alfalfa pellets. In Exp. 2, 18 wethers were housed in met...

Journal: :Revista de biologia tropical 2014
Elizabeth A Lacey Ligia Collado-Vides James W Fourqurean

Green sea turtles, Chelonia mydas, are grazers influencing the distribution of seagrass within shallow coastal ecosystems, yet the drivers behind C. mydas patch use within seagrass beds are largely unknown. Current theories center on food quality (nutrient content) as the plant responds to grazing disturbances; however, no study has monitored these parameters in a natural setting without grazer...

Journal: :Grass and Forage Science 2022

Restoration managements based on extensification strategies are commonly used to improve biodiversity formerly improved grasslands. In this study the long-term effects of six different restoration management regimes (extensive sheep grazing only, hay cutting followed by aftermath extensive grazing; each with and without lime application) forage quality, soil/herbage/sward characteristics relati...

Azizollah Jafari Kokhdan Dorna Rezaei Mohamad Hossein Irannezhad Parizi Roghaye Zolfaghari

Dena Biosphere Reserve located in Iran and is a 550 Biosphere Reserve in the worlds. This research was investigated in the two protected and non-protected areas, in a Dena Biosphere Reserve, Kohkeloye va Boyrahmad province, and central zagros forest, southwest of Iran. Inventory methods designed by systemetic-randomaiz method by use the rectangular plots that were 15×30 meters in the 100×100 m ...

Journal: :European Journal of Ecology 2022

The Wicken Fen Vision (Cambridgeshire, UK) is a landscape-scale habitat restoration project that uses process-driven, open-ended approaches to develop habitats on highly degraded and drained peat soils of former intensive arable land. land extensively grazed with herds free-roaming, minimally managed Highland cattle Konik horses. In one 119 ha area, seven 25m x 25 m grazing exclosures were erec...

1999
B. K. Northup J. R. Brown J. A. Holt

The role of grass tussocks in supporting soil microbial biomass (SMB) in grazed ecosystems is not fully understood, nor is the spatial distribution of SMB in response to different grass species. We undertook a study in 1997 that examined ®ne-scale distributions of SMB in grazed experimental paddocks located in the eucalypt woodlands of northern Queensland, Australia. Levels of SMB were determin...

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