نتایج جستجو برای: 30642 km2

تعداد نتایج: 5297  

2017
Tom L Schmidt Nicholas H Barton Gordana Rašić Andrew P Turley Brian L Montgomery Inaki Iturbe-Ormaetxe Peter E Cook Peter A Ryan Scott A Ritchie Ary A Hoffmann Scott L O'Neill Michael Turelli

Dengue-suppressing Wolbachia strains are promising tools for arbovirus control, particularly as they have the potential to self-spread following local introductions. To test this, we followed the frequency of the transinfected Wolbachia strain wMel through Ae. aegypti in Cairns, Australia, following releases at 3 nonisolated locations within the city in early 2013. Spatial spread was analysed g...

2017
Haidong Li Yuanyun Gao Yingkui Li Shouguang Yan Yuyue Xu

Climate change and increasing human activities have induced lake expansion or shrinkage, posing a serious threat to the ecological security on the Inner Mongolian Plateau, China. However, the pattern of lake changes and how it responds to climate change and revegetation have rarely been reported. We investigated the pattern of lake-area changes in the Dalinor National Nature Reserve (DNR) using...

2015
Thomas Jemielita George L. Gerton Matthew Neidell Steven Chillrud Beizhan Yan Martin Stute Marilyn Howarth Pouné Saberi Nicholas Fausti Trevor M. Penning Jason Roy Kathleen J. Propert Reynold A. Panettieri Jaymie Meliker

Over the past ten years, unconventional gas and oil drilling (UGOD) has markedly expanded in the United States. Despite substantial increases in well drilling, the health consequences of UGOD toxicant exposure remain unclear. This study examines an association between wells and healthcare use by zip code from 2007 to 2011 in Pennsylvania. Inpatient discharge databases from the Pennsylvania Heal...

2015
Xianbo Li Rui Zuo Yanguo Teng Jinsheng Wang Bin Wang Andrew C Singer

Increasing pressure on water supply worldwide, especially in arid areas, has resulted in groundwater overexploitation and contamination, and subsequent deterioration of the groundwater quality and threats to public health. Environmental risk assessment of regional groundwater is an important tool for groundwater protection. This study presents a new approach for assessing the environmental risk...

2009
F. Mattia G. Satalino V. R. N. Pauwels

The objective of the study is to investigate the potential of retrieving superficial soil moisture content (mv) from multi-temporal L-band synthetic aperture radar (SAR) data and hydrologic modelling. The study focuses on assessing the performances of an L-band SAR retrieval algorithm intended for agricultural areas and for watershed spatial scales (e.g. from 100 to 10 000 km2). The algorithm t...

2016
Israel Estrada-Contreras Miguel Equihua Javier Laborde Enrique Martínez Meyer Lázaro R Sánchez-Velásquez

Climate change is recognized as an important threat to global biodiversity because it increases the risk of extinction of many species on the planet. Mexico is a megadiverse country and native tree species such as red cedar (Cedrela odorata) can be used to maintain forests while helping mitigate climate change, because it is considered a fast growing pioneer species with great economic potentia...

2014
Margaret J. Couvillon Roger Schürch Francis L. W. Ratnieks

Even as demand for their services increases, honey bees (Apis mellifera) and other pollinating insects continue to decline in Europe and North America. Honey bees face many challenges, including an issue generally affecting wildlife: landscape changes have reduced flower-rich areas. One way to help is therefore to supplement with flowers, but when would this be most beneficial? We use the waggl...

2017
Aurora Miho Yanai Euler Melo Nogueira Paulo Maurício Lima de Alencastro Graça Philip Martin Fearnside

We estimate deforestation and the carbon stock in 2740 (82 %) of the 3325 settlements in Brazil's Legal Amazonia region. Estimates are made both using available satellite data and a carbon map for the "pre-modern" period (prior to 1970). We used data from Brazil's Project for Monitoring Deforestation in Amazonia updated through 2013 and from the Brazilian Biomes Deforestation Monitoring Project...

2017
Yanlong Guo Xin Li Zefang Zhao Haiyan Wei Bei Gao Wei Gu

Effective conservation and utilization strategies for natural biological resources require a clear understanding of the geographic distribution of the target species. Tricholoma matsutake is an ectomycorrhizal (ECM) mushroom with high ecological and economic value. In this study, the potential geographic distribution of T. matsutake under current conditions in China was simulated using MaxEnt s...

2013
Kabir Uddin Deo Raj Gurung Amarnath Giriraj Basanta Shrestha

Floods are one of the most common hazards in the world, affect ing people’s lives and livelihoods. Flood hazard mapping and flood shelters suitability analysis are v ital elements in appropriate land use planning for flood-prone areas. This paper describes application of Remote Sensing (RS) and Geographical Information Systems (GIS) in identifying flood hazard zones and flood shelters and are t...

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