نتایج جستجو برای: patches and corridors

تعداد نتایج: 16829384  

Journal: :Ecology letters 2015
Joscha Beninde Michael Veith Axel Hochkirch

Understanding varying levels of biodiversity within cities is pivotal to protect it in the face of global urbanisation. In the early stages of urban ecology studies on intra-urban biodiversity focused on the urban-rural gradient, representing a broad generalisation of features of the urban landscape. Increasingly, studies classify the urban landscape in more detail, quantifying separately the e...

Journal: :Nature 2015

2005
Justin C. Williams Stephanie A. Snyder

Landscape fragmentation and habitat loss are significant threats to the conservation of biological diversity. Creating and restoring corridors between isolated habitat patches can help mitigate or reverse the impacts of fragmentation. It is important that restoration and protection efforts be undertaken in the most efficient and effective way possible because conservation budgets are often seve...

Journal: :محیط زیست طبیعی 0
آرش کرمی کارشناس ارشد رشتۀ جنگلداری و اقتصادجنگل دانشکدۀ منابع طبیعی، دانشگاه تهرا جهانگیر فقهی دانشیار گروه جنگلداری و اقتصاد جنگل دانشکدۀ منابع طبیعی، دانشگاه تهران محمدرضا مروی مهاجر استادگروه جنگلداری و اقتصاد جنگل دانشکدۀ منابع طبیعی، دانشگاه تهران

without doubt is one important aspects of sustainable forest management the continuing forest regeneration. identify and determine is effective dispersal and distribution pattern of regeneration patches in various types of forest and its evolution, in maintaining biodiversity in natural ecosystems. purpose was chosen of gorazbon district kheyrod forest for study, all patches regeneration were l...

Journal: :research in pharmaceutical sciences 0

the purpose of this work was to study the effect of various permeation enhancers on the permeation of salbutamol sulphate (ss) buccal patches through buccal mucosa in order to improve the bioavailability by avoiding the first pass metabolism in the liver and possibly in the gut wall and also achieve a better therapeutic effect. the influence of various permeation enhancers, such as dimethyl sul...

Journal: :Journal Of Geophysical Research: Biogeosciences 2021

The heterogeneity of carbon dioxide (CO2) and methane (CH4) sources within across watersheds presents a challenge to understanding the contributions different ecosystem patch types stream corridor watershed cycling. Changing hydrologic connections between patches (e.g., streams, vernal pools, hillslopes) can influence greenhouse gas emissions, but spatiotemporal dynamics emissions among are not...

ثریامحابد, آمنه, سلیمانی, سپیده, علیزاده, احمد, یزدانی چراتی, جمشید,

Materials and methods: In a descriptive cross-sectional study, 50 schools were selected by random sampling and the illuminance was measured using network method. In each place 2 to 10 measurements (between 8:00 AM and 14:00) were done using Lux meter (TES; A1336). Data was analyzed by GEE in SPSS V. 20. Results: The lighting intensity was measured in 306 places including 194 classrooms, 49 o...

Journal: :تحقیقات آب و خاک ایران 0
آرش کرمی کارشناسی ارشد، دانشگاه تهران قوام الدین زاهدی دانشیار، دانشگاه تهران جهانگیر فقهی دانشیار، دانشگاه تهران

some soil physical and chemical characteristics were analyzed in order to reveal the relationship between forest soils and regeneration patches. gorazbon district of kheyrud was selected as a case study for the research area. all regeneration patches were recorded using gps device. to assess the spatial structure and to quantify the metrics of regeneration patches, analyzing of landscape metric...

A Chandra Sekhar Chitta Suresh Kumar CM Anuradha Hindustan Abdul Ahad, Kishore Kumar Reddy

      The present study was performed to explore the matrix property of Ficus glomerata fruit mucilage for making transdermal patches. The mucilage was evaluated for its physicochemical properties. Various transdermal patches of indomethacin were prepared by solvent evaporation technique using different proportions of F. glomerata fruit mucilage. The compatib...

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