نتایج جستجو برای: forest grazing

تعداد نتایج: 120565  

2014
Ahmet Tolunay Elif Adıyaman Ayhan Akyol Duygu İnce Türkay Türkoğlu Veysel Ayhan

This study investigated grazing capacities of maquis scrubland and preparation principles of grazing management in forest resources. Kermes oak (Quercus coccifera L.), which is widespread as a main shrub species in maquis vegetation in Turkey, and pure hair goats (Capra hircus L.) feeding on shoots and leaves of this shrub were selected for study. The study was conducted in two stages. Green le...

2007
Ashok Baniya

C forestry in the Hills of Nepal is a more success story in terms of expansion on the forest cover area on the one hand and conservation of bio-diversity on the other. As the spill over effect of the community forestry on sphere like livelihood among others continue, it is less evident that whether forest user’s perception towards change in the crop production, grazing land area, number of tree...

2013
Susan K. McIlroy Amy J. Lind Barbara H. Allen-Diaz Leslie M. Roche William E. Frost Rob L. Grasso Kenneth W. Tate

Amphibians are experiencing a precipitous global decline, and population stability on public lands with multiple uses is a key concern for managers. In the Sierra Nevada Mountains (California, USA), managers have specifically identified livestock grazing as an activity that may negatively affect Yosemite toads due to the potential overlap of grazing with toad habitat. Grazing exclusion from Yos...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2015
Thure E Cerling Samuel A Andanje Scott A Blumenthal Francis H Brown Kendra L Chritz John M Harris John A Hart Francis M Kirera Prince Kaleme Louise N Leakey Meave G Leakey Naomi E Levin Fredrick Kyalo Manthi Benjamin H Passey Kevin T Uno

A large stable isotope dataset from East and Central Africa from ca. 30 regional collection sites that range from forest to grassland shows that most extant East and Central African large herbivore taxa have diets dominated by C4 grazing or C3 browsing. Comparison with the fossil record shows that faunal assemblages from ca. 4.1-2.35 Ma in the Turkana Basin had a greater diversity of C3-C4 mixe...

2011
Tim Horstkotte Jon Moen Tomas Lämås Timo Helle

In northern Sweden, the availability of arboreal lichens (Bryoria fuscescens, Alectoria sarmentosa) as winter grazing resources is an important element in reindeer husbandry. With the industrialization of forestry, forests rich in arboreal lichens have diminished considerably. Here, we analyze how forestry has impacted lichen availability from the 1920's to the present day and model its future ...

Journal: :international journal of advanced biological and biomedical research 2013
maziar haidari vahid etemad esmaeil khosropour

regeneration and forest durability guarantee is one of the most important aspects of forest sustainability and it should be placed in forest plans priority. to compare regeneration in the two grazed and non-grazed forest, baghe-shady forest located in khatam city (it has the preservative regions that they are 20 years old), yazd province, central of iran was selected. for this purpose, 60 sampl...

2013
Leslie M. Roche Lea Kromschroeder Edward R. Atwill Randy A. Dahlgren Kenneth W. Tate

There is substantial concern that microbial and nutrient pollution by cattle on public lands degrades water quality, threatening human and ecological health. Given the importance of clean water on multiple-use landscapes, additional research is required to document and examine potential water quality issues across common resource use activities. During the 2011 grazing-recreation season, we con...

Journal: :Forests 2022

In the pine forests of Mexico, disturbances are primarily due to cattle, horses, goat, and sheep grazing, particularly in communal grazing lands. The most evident low tree recruitment, invasive shrubs establishment, species composition changes, invasion weeds dispersed mainly by livestock. Sierra de Zapalinamé is a mountain range natural protected area northeast Mexico. We conducted current stu...

2004
G. M. ROGERS

Relationships between composition of secondary vegetation and environment were studied in central North Island, New Zealand. A classification procedure was used to identify broad compositional groups which included forest, broadleaved scrub, shrub-fernland, sclerophyllous scrub and shrubland, and tussock-shrubland. Generalised additive models (GAMs) were used to examine relationships between sp...

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