نتایج جستجو برای: forest and ranch coverage

تعداد نتایج: 16857886  

Journal: :Journal of wildlife diseases 2010
Susan M Cooper H Morgan Scott Guadalupe R de la Garza Aubrey L Deck James C Cathey

The last outbreak of foot-and-mouth disease (FMD) in the United States occurred in 1929. Since that time, numbers and distribution of feral swine (Sus scrofa) have increased greatly, especially in the southern states. This creates a potential risk to livestock production because swine are susceptible to, and can be carriers of, several economically harmful diseases of livestock. Most importantl...

2016
Sean Doyle Whipple John E. Foster Sean Doyle Wyatt Hoback

Dung beetles (Coleoptera: Scarabaeidae) play a major role in nutrient cycling, soil aeration, and the biological control of pests and parasites that breed in manure. Habitat fragmentation, pesticide usage, and conventional agricultural practices are threats to dung beetle diversity, and their conservation is of growing concern. Comparison of organic and conventional ranching practices is of gre...

2014
Anne Sverdrup-Thygeson Gunnhild Søgaard Graciela M. Rusch David N. Barton

In order to safeguard biodiversity in forest we need to know how forest policy instruments work. Here we use a nationwide network of 9400 plots in productive forest to analyze to what extent large-scale policy instruments, individually and together, target forest of high conservation value in Norway. We studied both instruments working through direct regulation; Strict Protection and Landscape ...

Journal: :Avian diseases 1996
H Kinde D H Read R P Chin A A Bickford R L Walker A Ardans R E Breitmeyer D Willoughby H E Little D Kerr I A Gardner

Salmonella enteritidis, phage type 4 (SE PT4), was isolated from five of six 27-wk-old layer chickens submitted for necropsy from a flock of 43,000. Bacteriologic and epidemiologic investigations on the ranch revealed that five of the eight flocks (n = 176,000) were infected. The prevalence of SE PT4 in randomly selected healthy birds ranged from 1.7% (in caged birds) to 50% (in free-range bird...

Journal: :Journal of the Japanese Society of Revegetation Technology 2019

Trees are the most important biological elements of forest ecosystems. The variability of the tree species composition inhabiting in the Oriental beech forest, not only forms different forest types but also has a remarkable impact on the species diversity of forest floor plants, due to the existence of trees in the overstory layer. In this research, forest types of an an Oriental beech were ide...

2016
Rupa Iyer Ashish Damania

Stenotrophomonas maltophilia CBF10-1 was isolated from a ranch in Fairchilds, Texas, USA. Its genome reveals a highly adaptable microorganism with a large complement of antibiotic and heavy metal resistance genes, efflux pumps, multidrug transporters, and xenobiotic degradation pathways.

2017
Hui Tao Ying Nan Zhi-Feng Liu

The transnational area of Changbai Mountain (TACM) is crucial to sustainable development in Northeast Asia owing to its abundant forest, which helps in maintaining biodiversity and multiple ecosystem services. However, the spatiotemporal patterns of forest in the TACM have been poorly understood across the whole region. The objectives of this study were to quantify the spatiotemporal patterns o...

Journal: :پژوهش های علوم و فناوری چوب و جنگل 0

in the past, forest road network designing was mainly done for its main goals-management and exploitation. this study was performed to pay attention for multilateral goals of forest roads, especially its role in forest villages’ development, in estakhr-posht of neka (6 villages) in series 2, section 6 of neka-zalem rood forest management plan. at first, constructed forest roads and suggested ro...

Journal: :Journal of occupational and environmental medicine 2008
Joel E Michalek Marian Pavuk

BACKGROUND The Air Force Health Study was launched in 1980 as part of a Federal effort to resolve the Agent Orange issue. OBJECTIVES To study diabetes and cancer with additional adjustment for days of spraying, calendar period of service, and time spent in Southeast Asia (SEA). METHODS This was a longitudinal study of veterans of Operation Ranch Hand, the unit responsible for spraying Agent...

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