نتایج جستجو برای: fragmentation road resources

تعداد نتایج: 369605  

2016
Rajesh Dayal Prem Prakash Srivastava Sudhir Raizada Akhilesh Kumar Yadav Anita Bhatnagar Shipra Chowdhary

1 ICARNational Bureau of Fish Genetic Resources, Canal Ring Road, Teli Bagh, Lucknow – 226 002, Uttar Pradesh, India . 2 (Present address): ICAR Central Institute of Fisheries Education, Panch Marg, Off Yari Road, Mumbai-400 061, Maharashtra, India. 3 Aquaculture Research Training Unit, ICAR National Bureau of Fish Genetic Resources, Chinhat, Faizabad Road, Lucknow-227105, Uttar Pradesh, India....

2003
Wendel J. Hann Michael J. Wisdom Mary M. Rowland Thomas M. Quigley

Hann, Wendel J.; Wisdom, Michael J.; Rowland, Mary M. 2003. Disturbance departure and fragmentation of natural systems in the interior Columbia basin. Res. Pap. PNW-RP-545. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 19 p. We integrated landscape data from science assessments of the interior Columbia basin (basin) into one variable that func...

Journal: :محیط شناسی 0
اطهره نژادی مجید مخدوم سید مسعود منوری علی بالی حمید فراهانی راد

human activities often adversely affect natural landscapes and ecosystems. natural landscapes consist of habitats, and habitat loss and fragmentation are major threats to biodiversity. environmental impact assessment (eia)as a systematic and well documented procedure to identify, describe and assess the direct and indirect effects of a developmental project in different environments does not co...

Journal: :journal of research in health sciences 0
mahdi reyahi khoram mino nafea hossein mahjub marzieh hashemy maesumeh parchian

background: the aim of this study was to assess the effects of road deicing salt on the quality of the ground water resources in hamadan province during winter season. methods: water samples were taken monthly from thirty wells located around the hamadan-asadabad highway. the quality of well water was examined by measuring amount of sodium, chloride, total hardness, total dissolved solid, elect...

Journal: :Diversity 2021

Roads have impacts on the fauna arising from habitat fragmentation, roadkill and barrier effect. Furthermore, roads lead species to change their activity with repercussions predator–prey interactions trigger indirect effects that are currently unknown. This study analyzes effect of a motorway trophic behavior terrestrial carnivore community its surroundings. Monthly scat sampling was conducted ...

2012
Sheng-Lan Zeng

Urbanization and related anthropogenic modifications cause extent of habitat fragmentation and directly lead to decline of local biodiversity. Conservation biologists advocate corridor creation as one approach to rescue biodiversity. Here we examine the utility of roads as corridors in preserving plant diversity by investigating roadside vegetation in Yellow River Delta (YRD), China. We examine...

Journal: :Computers, Environment and Urban Systems 2013
Demetris Demetriou John Stillwell Linda M. See

(2013) A new methodology for measuring land fragmentation. Abstract The presence of land fragmentation implies that the existing land tenure structure is defective. It is a major problem in many regions because it restricts agricultural development and reduces the opportunities for sustainable rural development. Whilst policies to counter land fragmentation require reliable measurement indices,...

2011
Ricardo M. Holdo John M. Fryxell Anthony R. E. Sinclair Andrew Dobson Robert D. Holt

The Serengeti wildebeest migration is a rare and spectacular example of a once-common biological phenomenon. A proposed road project threatens to bisect the Serengeti ecosystem and its integrity. The precautionary principle dictates that we consider the possible consequences of a road completely disrupting the migration. We used an existing spatially-explicit simulation model of wildebeest move...

2013
Nathan M. Bacheler Valerio Bartolino Marcel J. M. Reichert

1 Beaufort Laboratory Southeast Fisheries Science Center National Marine Fisheries Service, NOAA 101 Pivers Island Road Beaufort, North Carolina 28516 2 Swedish University of Agricultural Sciences Department of Aquatic Resources Lysekil, 45330, Sweden 3 Department of Earth Sciences University of Gothenburg Gothenburg, 40530, Sweden 4 Marine Resources Research Institute South Carolina Department...

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