نتایج جستجو برای: oak forest

تعداد نتایج: 113572  

2017
Katherine L. Martin Taehee Hwang James M. Vose John W. Coulston David N. Wear Brian Miles Lawrence E. Band

Oak Ridge Institute for Science and Education (ORISE), Oak Ridge, TN, USA Center for Integrated Forest Science, USDA Forest Service Southern Research Station, Raleigh, NC, USA Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC, USA Department of Geography, Indiana University, Bloomington, IN, USA Forest Inventory and Analysis Program, USDA Forest Se...

2013
Marc D. Abrams

Overstory and understory data were collected over a 15-year period (1996–2011) before and after seed tree logging in 1996 and an accidental wildfire in 2006 in a young developing mixed-oak forest in central Pennsylvania. The mature forest overstory was dominated by chestnut oak (Quercus montana) followed by northern red oak (Quercus rubra), black oak (Quercus velutina), scarlet oak (Quercus coc...

2005
A. Dan Wilson Theodor D. Leininger William J. Otrosina L. David Dwinell Nathan M. Schiff

A variety of forest health issues, concerns, and events have rapidly changed southern forests and plantations in the past two decades. These factors have strongly impacted the ways we manage forest pests in the Southern United States. This trend will no doubt continue to shape forest pest management in the future. The major issues and events of concern include changing forest conditions, urbani...

2011
Kent Kovacs Thomas P. Holmes Jeffrey E. Englin Janice Alexander

Sudden Oak Death” (Phytophthora ramorum) is a non-indigenous forest pathogen which causes substantial mortality of coast live oak (Quercus agrifolia) and several other oak tree species on the Pacific Coast of the United States. We estimated the time path of residential property values subject to oak mortality using a dataset that spans more than two decades—including a decade of transactions be...

2009
António Cipriano Pinheiro Nuno Almeida Peter Surový Alfredo Gonçalves Ferreira

The agro-silvopastoral system ‘montado’ is mostly dominated by Mediterranean evergreen oaks such as, cork oak (Quercus suber L.) and holm oak (Quercus rotundifolia). The ‘montado’ production system management aims the maintenance of a balanced sustainable land use to cope with the Mediterranean climate variability. One important issue in cork oak forests is the control shrub growth in order to ...

Mohammad kazem Parsapour Yousef Askari, Zahra Hosseni

To modeling of Suitability Iranian Oak site to establish coppice regenerations, chahartagh forest reserve, Ardal region, chaharmehal and Bakhtiari Province, southern Zagros forest, and southwest Iranian state was selected. To modeling Suitability Iranian Oak used the physiographic element, soil depth, climatology and distance from village selected. To this study used the raster formats by pixel...

2008
Qinglin Li Daryl L. Moorhead Jared L. DeForest Rachel Henderson Jiquan Chen Randy Jensen

We monitored the decomposition of mixed leaf litter (Quercus spp., Carya spp., and Pinus echinata) in a Missouri Ozark forest eight years after experimental harvest. Leaf littermass losses and changes in carbon chemistry (extractive, acid soluble, and acid insoluble fractions) were measured over 32 months in field incubations to determine the effects of litter composition and standmanipulation ...

2016
Mitsutoshi Kitao Yukio Yasuda Yuji Kominami Katsumi Yamanoi Masabumi Komatsu Takafumi Miyama Yasuko Mizoguchi Satoshi Kitaoka Kenichi Yazaki Hiroyuki Tobita Kenichi Yoshimura Takayoshi Koike Takeshi Izuta

Ground-level ozone (O3) concentrations are expected to increase over the 21(st) century, especially in East Asia. However, the impact of O3 has not been directly assessed at the forest level in this region. We performed O3 flux-based risk assessments of carbon sequestration capacity in an old cool temperate deciduous forest, consisting of O3-sensitive Japanese beech (Fagus crenata), and in a wa...

Examining the effects of climate change on the oak spatial distribution, as the main species of Zagros forests and its ecological and economic values is of significant importance. Here, we used species distribution models for simulating current climatic suitability of oak and its potential changes in 2050 and 2070. For this purpose, five regression-based and machine learning approaches, four cl...

Journal: :Ecological Entomology 2021

1. Fluctuations in abundance of blacklegged ticks space and time are well‐documented, but the extent to which populations fluctuate synchronously across habitat types is poorly understood. In oak forests, tick density depends on small mammal abundance, turn driven by fluctuations acorn production. It currently unknown whether forest, long understood depend largely masting events, shared with ne...

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