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You searched for: Publication Year 2011 Remove constraint Publication Year: 2011 Subject rangelands Remove constraint Subject: rangelands
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1. Adaptation behaviour of local and rangeland cattle relocated to a temperate agricultural pasture

Author:
D. T. Thomas; M. G. Wilmot; R. W. Kelly; D. K. Revell
Source:
Animal production science 2011 v.51 no.12 pp. 1088-1097
ISSN:
1836-0939
Subject:
animal growth; average daily gain; beef cattle; heifers; markets; pastures; rangelands; weight gain; zebu; Western Australia
Abstract:
... Relocating cattle from rangeland properties to agricultural pastures in southern Western Australia allows producers to improve year-round continuity of feed supply in their beef cattle businesses, and can reduce substantially the time taken to grow animals to meet market specifications. In this study the behaviour and growth of two groups of young cattle that were sourced from different locations ...
DOI:
10.1071/AN11044

2. Are environmental factors important facilitators of pompom weed (Campuloclinium macrocephalum) invasion in South African rangelands?

Author:
Jeremy Goodall; Ed T. F. Witkowski; Craig D. Morris; Lesley Henderson
Source:
Biological invasions 2011 v.13 no.10 pp. 2217-2231
ISSN:
1387-3547
Subject:
crop-weed competition; defoliation; ecosystems; environmental factors; fires; forbs; grasses; grasshoppers; grazing; herbivores; invasive species; natural enemies; pastures; plant adaptation; rain; rangelands; roads; soil texture; sustainable agriculture; sward; topography; vegetation cover; weeds; wetland plants; wetlands; South Africa
Abstract:
... The absence of natural enemies being keystone to the success of invasive alien plants (IAPs) can only be accepted once all the factors governing the invader and the ecosystems it invades have been established. Few studies have attempted this approach. This study reports on the relations between the invasive alien forb Campuloclinium macrocephalum (Less.) DC. (pompom weed), herbivory and the ecolog ...
DOI:
10.1007/s10530-011-0035-6

3. Are we "missing the boat" on preventing the spread of invasive plants in rangelands

Author:
Davies, Kirk W.; Johnson, Dustin D.
Source:
Invasive plant science and management 2011 v.4 no.1 pp. 166-171
ISSN:
1939-747X
Subject:
invasive species; rangelands; colonizing ability; weed control; plant communities; control methods; ecological restoration; attitudes and opinions; seed dispersal; competitive exclusion; species diversity; planning
Abstract:
... Invasive plants are negatively affecting the ecological and economic production of rangelands by reducing resource productivity, decreasing biodiversity, displacing native vegetation, and altering ecosystem processes and functions. However, despite these well-known negative effects, once invasive plants are regionally established, limited effort is directed at preventing their continued spread acr ...
Handle:
10113/49768
DOI:
10.1614/IPSM-D-10-00030.1

4. Areas and Greenhouse Gas Emissions from Feed Crops Not Used in Canadian Livestock Production in 2001

Author:
J. A. Dyer; X. P. C. Vergé; S. N. Kulshreshtha; R. L. Desjardins; B. G. McConkey
Source:
Journal of sustainable agriculture 2011 v.35 no.7 pp. 780-803
ISSN:
1540-7578
Subject:
biofuels; crops; databases; diet; feedstocks; greenhouse gas emissions; greenhouse gases; irrigated farming; land use; livestock; livestock and meat industry; livestock production; models; rangelands; Canada
Abstract:
... Estimates of greenhouse gas (GHG) emissions from Canada's four main livestock industries were integrated with the Canadian Economic and Emissions Model for Agriculture (CEEMA) which operates at the census district level. The livestock crop complex (LCC), which defines the crop area required to feed Canada's livestock, was disaggregated from provincial to district level. The LCC areas were subtract ...
DOI:
10.1080/10440046.2011.606493

5. Assessing conservation opportunity on private land: Socio-economic, behavioral, and spatial dimensions

Author:
Christopher M. Raymond; Gregory Brown
Source:
Journal of environmental management 2011 v.92 no.10 pp. 2513-2523
ISSN:
0301-4797
Subject:
ecological value; basins; income; family farms; managers; rangelands; analysis of variance; recreation; farmers; gender; farming systems; private lands; honors and awards; surveys; vegetation; land restoration; indigenous species; education; conservation areas; farm size
Abstract:
... This study presents a method for assessing conservation opportunity on private land based on landholders' socio-economic, behavioral, and farm characteristics. These characteristics include age, gender, education, level of off-farm income, farm size, proportion of remnant native vegetation on-farm, and ecological value of native vegetation on-farm. A sample of landholders who own greater than 2 ha ...
DOI:
10.1016/j.jenvman.2011.05.015
PubMed:
21664035

6. Assessing the influence of resource covariates at multiple spatial scales: an application to forest-dwelling caribou faced with intensive human activity

Author:
Mathieu Leblond; Jacqueline Frair; Daniel Fortin; Christian Dussault; Jean-Pierre Ouellet; Réhaume Courtois
Source:
Landscape ecology 2011 v.26 no.10 pp. 1433-1446
ISSN:
0921-2973
Subject:
Rangifer tarandus caribou; calving; deciduous forests; habitats; humans; landscapes; lichens; models; rangelands; roads; spring; summer; temporal variation; wetlands; winter; woodlands; Canada
Abstract:
... Efforts in isolating the relative effects of resources and disturbances on animal-distribution patterns remain hindered by the difficulty of accounting for multiple scales of resource selection by animals with seasonally dynamic drivers. We developed multi-scale, seasonal models to explore how local resource selection by the threatened forest-dwelling woodland caribou (Rangifer tarandus caribou) w ...
DOI:
10.1007/s10980-011-9647-6

7. An Assessment of State-and-Transition Models: Perceptions Following Two Decades of Development and Implementation

Author:
Corrine N. Knapp; Maria E. Fernandez-Gimenez; David D. Briske; Brandon T. Bestelmeyer; X. Ben Wu
Source:
Rangeland ecology & management 2011 v.64 no.6 pp. 598-606
ISSN:
1551-5028
Subject:
ecoregions; ecosystems; expert opinion; land evaluation; managers; models; professionals; range management; rangelands; researchers; terminology; United States
Abstract:
... State and transition models (STMs) are being developed for many areas in the United States and represent an important tool for assessing and managing public and private rangelands. Substantial resources have been invested in model development, yet minimal efforts have been made to evaluate the utility of STMs for rangeland assessment and management. We interviewed 47 rangeland professionals, equal ...
Handle:
10113/57971
DOI:
10.2111/rem-d-10-00188.1

8. Assessment of charcoal driven deforestation rates in a fragile rangeland environment in North Eastern Somalia using very high resolution imagery

Author:
S.M. Oduori; F. Rembold; O.H. Abdulle; R. Vargas
Source:
Journal of arid environments 2011 v.75 no.11 pp. 1173-1181
ISSN:
0140-1963
Subject:
Panthera tigris; charcoal; deforestation; environmental impact; image analysis; rangelands; regrowth; satellites; trees; vegetation; Somalia
Abstract:
... Multi-temporal very high resolution satellite images and field work have been used for quantifying the tree cutting rate over a 5 years period in a very arid tiger bush area of North Eastern Somalia with intensive charcoal production activities. By applying both a classical area frame sampling approach with visual interpretation of the samples and a semi-automatic tree detection algorithm, it was ...
DOI:
10.1016/j.jaridenv.2011.05.003

9. The Biology of Canadian Weeds. 149. Rumex acetosella L

Author:
Stopps, Gregory J.; White, Scott N.; Clements, David R.; Upadhyaya, Mahesh K.
Source:
Canadian journal of plant science 2011 v.91 no.6 pp. 1037-1052
ISSN:
0008-4220
Subject:
sorrel; Oxalis; grasslands; roots; disturbed soils; pastures; vegetable crops; Tomato spotted wilt orthotospovirus; herbal medicines; leaves; asexual reproduction; control methods; Rumex acetosella; weeds; oxalic acid; climatic factors; ascorbic acid; rangelands; Vaccinium angustifolium; sheep; tillage; herbicides; horses; Nova Scotia; Europe; Asia
Abstract:
... Rumex acetosella L., sheep sorrel, is a perennial herb originating from Europe and southwestern Asia, now found in at least 70 countries worldwide. A common weed, it appears in grasslands, pastures, rangelands, waste areas, and along roadsides across North America. It frequently occurs as a weed in lowbush blueberry fields in Atlantic Canada, particularly in Nova Scotia. Rumex acetosella thrives o ...
DOI:
10.4141/cjps2011-042

10. Broom Snakeweed (Gutierrezia sarothrae): Toxicology, Ecology, Control, and Management

Author:
Ralphs, Michael H.; McDaniel, Kirk C.
Source:
Invasive plant science and management 2011 v.4 no.1 pp. 125-132
ISSN:
1939-747X
Subject:
Gutierrezia sarothrae; biodiversity; drought; even-aged stands; forage; grasses; herbicides; livestock; overgrazing; prescribed burning; rangelands; spraying; toxicity; toxicology; weeds; wildlife; North America
Abstract:
... Broom snakeweed is a native weed widely distributed on rangelands of western North America. It often increases to near monocultures following disturbance from overgrazing, fire, or drought. This paper presents an up-to-date review of broom snakeweed toxicology, seed ecology, population cycles, succession, and management. The greatest ecological concern is that broom snakeweed displaces desirable f ...
DOI:
10.1614/IPSM-D-09-00038.1

11. Capacity Building Helps Pastoral Women Transform Impoverished Communities in Ethiopia

Author:
D. Layne Coppock; Solomon Desta; Seyoum Tezera; Getachew Gebru
Source:
Science 2011 v.334 no.6061 pp. 1394-1398
ISSN:
0036-8075
Subject:
collective action; drought; education; hunger; income and wealth; information technology; livelihood; livestock; marketing; pastoralism; poverty; quality of life; rangelands; risk management; women; Ethiopia
Abstract:
... Poverty, drought, and hunger devastate people on Africa’s rangelands. We used an action-oriented approach from 2000 to 2004 to build capacity among thousands of pastoralists to diversify livelihoods, improve living standards, and enhance livestock marketing. The process included collective action, microfinance, and participatory education. Poor women previously burdened by domestic chores became l ...
DOI:
10.1126/science.1211232

12. Cattle Grazing Toxic Delphinium andersonii in South-Central Idaho

Author:
Pfister James A.; Cook Daniel; Gardner Dale R.
Source:
Rangeland ecology & management 2011 v.64 no.6 pp. 664-668
ISSN:
1550-7424
Subject:
Angus; Artemisia; Delphinium; animal age; cows; death; flowers; grazing; heifers; pastures; phenology; rangelands; toxicity; yearlings; Idaho
Abstract:
... Anderson larkspur (Delphinium andersonii A. Gray) is a toxic plant responsible for cattle death losses in the western United States. The objectives of the present study were to determine when cattle consumed Anderson larkspur in relation to plant phenology and toxicity, and to determine if animal age influenced selection of Anderson larkspur. These grazing studies were conducted on semiarid sagebr ...
DOI:
10.2111/REM-D-11-00001.1

13. Causes and Effects of Gully Erosion on Agricultural Lands and the Environment

Author:
Mansour Jahantigh; Mohammad Pessarakli
Source:
Communications in soil science and plant analysis 2011 v.42 no.18 pp. 2250-2255
ISSN:
1532-2416
Subject:
absorption; aerial photography; agricultural land; arid lands; arid zones; calcium; cation exchange capacity; cities; electrical conductivity; exchangeable sodium; global positioning systems; gully erosion; humans; irrigation; land use; overgrazing; pH; poverty; rain; rangelands; rivers; roads; runoff; sediments; sodium; soil depth; soil sampling; soil texture; vegetation cover; villages; water holding capacity; water quantity; water table; Iran
Abstract:
... This study was aimed at assessing the causes of the gully erosion and its effects on the agricultural lands in the arid region of southeastern Iran. In this study, we have used geologic maps in scales of 1:50,000 and 1:250,000, aerial photographs on a scale of 1:20,000, field observation, and GPS (global positioning system). Three soil samples were taken from 25, 50, and 75% of the gully length at ...
DOI:
10.1080/00103624.2011.602456

14. Combating desertification in Iran over the last 50 years: An overview of changing approaches

Author:
Farshad Amiraslani; Deirdre Dragovich
Source:
Journal of environmental management 2011 v.92 no.1 pp. 1-13
ISSN:
0301-4797
Subject:
climate change; community service; control methods; desertification; dunes; employment; forage production; groundwater; growth retardation; national planning; plant density; plantations; population growth; poverty; rangelands; runoff; rural areas; species diversity; windbreaks; Iran
Abstract:
... Desertification in Iran was recognized between the 1930s and 1960s. This paper traces Iran’s attempts to reclaim desertified areas, evaluates the anti-desertification approaches adopted, and identifies continuing challenges. Iran has areas vulnerable to desertification due to extensive areas of drylands and increasing population pressure on land and water resources. Over-grazing of rangelands is a ...
DOI:
10.1016/j.jenvman.2010.08.012
PubMed:
20855149

15. Comparative rates of wind versus water erosion from a small semiarid watershed in southern Arizona, USA

Author:
Y.-G. Zhang; M.A. Nearing; B.Y. Liu; R.S. Van Pelt; J.J. Stone; H. Wei; R.L. Scott
Source:
Aeolian research 2011 v.3 no.2 pp. 197-204
ISSN:
1875-9637
Subject:
Rita; rangelands; sediments; soil; water erosion; watersheds; wind; wind erosion; Arizona
Abstract:
... The relative erosion rates of wind and water erosion have rarely been studied simultaneously and are poorly quantified. In this study, wind and water erosion rates were simultaneously measured and compared over 2yrs for a small rangeland watershed in the Santa Rita Experimental Range in southern Arizona. Average horizontal, wind-driven sediment flux was 7.0gm⁻¹d⁻¹ during the study period. The comb ...
DOI:
10.1016/j.aeolia.2011.03.006

16. Comparing tourists' behaviour and values of land use changes: a focus on ranch land open space in Colorado

Author:
Lindsey J. Ellingson; Andrew F. Seidl; John B. Loomis
Source:
Journal of environmental planning and management 2011 v.54 no.1 pp. 55-69
ISSN:
1360-0559
Subject:
contingent valuation; land use change; landscapes; open space; rangelands; tourists; Colorado
Abstract:
... Scenic landscapes demonstrate public good attributes and will be undervalued in the market. This research compares estimates of tourists' non-consumptive use values of ranch land open space in Routt County, Colorado from contingent valuation and contingent behaviour methods. If ranch lands are converted to urban uses, the decrease in value of trips estimated using the contingent valuation method i ...
DOI:
10.1080/09640568.2010.502756

17. Comparison of methods for land-use classification incorporating remote sensing and GIS inputs

Author:
Offer Rozenstein; Arnon Karnieli
Source:
Applied geography 2011 v.31 no.2 pp. 533-544
ISSN:
0143-6228
Subject:
databases; geographic information systems; geography; irrigation; land use change; rainfed farming; rangelands; remote sensing; scientists; Israel
Abstract:
... Over the last few decades, dramatic land-use changes have occurred throughout Israel. Previously-grazed areas have been afforested, converted to irrigated or rain-fed agriculture, turned into natural reserves, often used as large military training sites, converted to rural and urban settlements, or left unused. Land-use maps provided by the Israeli governmental are more detailed for agricultural a ...
DOI:
10.1016/j.apgeog.2010.11.006

18. Conserving biodiversity of community forests and rangelands of a hot arid region of India

Author:
Pradeep Chaudhry; Naveen K. Bohra; Karna Ram Choudhary
Source:
Land use policy 2011 v.28 no.3 pp. 506-513
ISSN:
0264-8377
Subject:
arid zones; biodiversity; cost effectiveness; farming systems; forests; livestock; people; planning; rangelands; India
Abstract:
... Community forests/rangelands, called Orans and Gauchars in the western arid part of India, constitute a significant proportion of the total geographical area of the region. Given the economic importance of these areas from time immemorial, the local people took special care to protect and sustainably utilize these common property resources. However, these forests and rangelands have suffered sever ...
DOI:
10.1016/j.landusepol.2010.10.005

19. Considering the social dimension of invasive species: the case of buffel grass

Author:
N.A. Marshall; M. Friedel; R.D. van Klinken; A.C. Grice
Source:
Environmental science & policy 2011 v.14 no.3 pp. 327-338
ISSN:
1462-9011
Subject:
Cenchrus ciliaris; attitudes and opinions; ecological value; environmental impact; grasses; grazing lands; invasive species; issues and policy; livestock; national parks; pasture plants; pastures; public lands; rangelands; social networks; stakeholders; sustainable development; Australia
Abstract:
... The status of many invasive plant species that are also of high commercial value is contentious. Management of negative impacts depends on the support and co-operation of people who regard the species as an asset. For example, buffel grass (Cenchrus ciliaris) is highly prized by many pastoralists in Australia as an introduced pasture grass for livestock but it also has significant and deleterious ...
DOI:
10.1016/j.envsci.2010.10.005

20. Controlling Saw Palmetto with Individual Plant and Broadcast Herbicide Treatments

Author:
Brandon J. Fast; Jason A. Ferrell; Brent A. Sellers; William N. Kline
Source:
Forage and grazinglands 2011 v.9 no.1 pp. 0
ISSN:
1547-4631
Subject:
Serenoa repens; chemical control; field experimentation; fluroxypyr; metsulfuron; pastures; rangelands; shrubs; triclopyr; weeds
Abstract:
... Saw palmetto [Serenoa repens (Bartram) Small] is a small palm-like shrub that is a common and troublesome weed of rangeland and pastures. Very little information is available on chemical control of this species; therefore, field experiments were conducted in which metsulfuron and triclopyr were applied to saw palmetto as individual plant treatments, and aminopyralid, fluroxypyr, metsulfuron, and t ...
DOI:
10.1094/FG-2011-0829-01-RS