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https://www.readbyqxmd.com/read/28932955/the-sustainable-arable-land-use-pattern-under-the-tradeoff-of-agricultural-production-economic-development-and-ecological-protection-an-analysis-of-dongting-lake-basin-china
#1
Guanyi Yin, Liming Liu, Xilong Jiang
To find a solution regarding sustainable arable land use pattern in the important grain-producing area during the rapid urbanization process, this study combined agricultural production, locational condition, and ecological protection to determine optimal arable land use. Dongting Lake basin, one of the major grain producing areas in China, was chosen as the study area. The analysis of land use transition, the calculation of arable land barycenter, the landscape indices of arable land patches, and the comprehensive evaluation of arable land quality(productivity, economic location, and ecological condition) were adopted in this study...
September 20, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28931887/multiple-stressor-effects-on-marine-infauna-responses-of-estuarine-taxa-and-functional-traits-to-sedimentation-nutrient-and-metal-loading
#2
J I Ellis, D Clark, J Atalah, W Jiang, C Taiapa, M Patterson, J Sinner, J Hewitt
Sedimentation, nutrients and metal loading to coastal environments are increasing, associated with urbanization and global warming, hence there is a growing need to predict ecological responses to such change. Using a regression technique we predicted how maximum abundance of 20 macrobenthic taxa and 22 functional traits separately and interactively responded to these key stressors. The abundance of most taxa declined in response to sedimentation and metal loading while a unimodal response was often associated with nutrient loading...
September 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28918006/factors-influencing-organochlorine-pesticides-distribution-in-the-brisbane-river-estuarine-sediment-australia
#3
Godfred Odame Duodu, Ashantha Goonetilleke, Godwin A Ayoko
Sediment samples collected from Brisbane River were analysed for organochlorine pesticide residues (OCPs). The factors influencing OCPs distribution in the sediment were investigated using multivariate analytical tools. Thirteen OCPs were detected in the sediment with concentrations ranging between below detection to 83.9ng/g, and detection frequency >90%. With the exception of dieldrin, the OCP inputs appear to be historical and may cause adverse ecological impacts. Multi-criteria ranking of the factors influencing the OCPs (except dieldrin) distribution in the sediment revealed that TOC>silt>intensive urban land use>population>seasons...
September 13, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28915988/learning-to-be-gendered-gender-socialization-in-early-adolescence-among-urban-poor-in-delhi-india-and-shanghai-china
#4
Sharmistha Basu, Xiayun Zuo, Chaohua Lou, Rajib Acharya, Rebecka Lundgren
PURPOSE: The purpose of the study is to understand the gender socialization process in early adolescence. METHODS: The study was located in two disadvantaged urban communities in Delhi, India and Shanghai, China and was part of the multicountry (15) Global Early Adolescent Study. Qualitative methodologies were used with boys and girls aged 11-13 years, including 16 group-based timeline exercises and 65 narrative interviews. In addition, 58 parents of participating adolescents were interviewed...
October 2017: Journal of Adolescent Health: Official Publication of the Society for Adolescent Medicine
https://www.readbyqxmd.com/read/28913836/female-reproductive-system-morphology-of-crab-eating-fox-cerdocyon-thous-and-cryopreservation-of-genetic-material-for-animal-germplasm-bank-enrichment
#5
L C Machado, K C S Roballo, F S Cury, C E Ambrósio
The sprawl of the urbanization and road network process without building ecological corridors contributes to the high mortality rates and a threat to the population decline of wild species such as the crab-eating fox. A strategy for the ex situ conservation is the study of the reproductive biology of the species and cryopreservation of their genetic heritage through the formation of an animal germplasm bank. This research is in accordance with the principles adopted by Brazilian College of Animal Experimentation...
September 15, 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28904764/the-second-southern-african-bird-atlas-project-causes-and-consequences-of-geographical-sampling-bias
#6
Sanet Hugo, Res Altwegg
Using the Southern African Bird Atlas Project (SABAP2) as a case study, we examine the possible determinants of spatial bias in volunteer sampling effort and how well such biased data represent environmental gradients across the area covered by the atlas. For each province in South Africa, we used generalized linear mixed models to determine the combination of variables that explain spatial variation in sampling effort (number of visits per 5' × 5' grid cell, or "pentad"). The explanatory variables were distance to major road and exceptional birding locations or "sampling hubs," percentage cover of protected, urban, and cultivated area, and the climate variables mean annual precipitation, winter temperatures, and summer temperatures...
September 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28902295/sandfly-fauna-diptera-psychodidae-in-an-urban-area-central-west-of-brazil
#7
Wagner de Souza Fernandes, Leandro Machado Borges, Aline Etelvina Casaril, Everton Falcão de Oliveira, Jucelei de Oliveira Moura Infran, Eliane Mattos Piranda, Elisa Teruya Oshiro, Suellem Petilim Gomes, Alessandra Gutierrez de Oliveira
Biological and ecological relations among vectors and their pathogens are important to understand the epidemiology of vector-borne diseases. Camapuã is an endemic area for visceral and tegumentary leishmaniasis. The aim of this study was to characterize the sandfly fauna present in Camapuã , MS, Brazil. Sand flies were collected every fortnight from May 2014 to April 2015 using automatic light traps in the domicile and peridomicile of twelve neighborhoods and forest. The collected specimens were identified based on morphology according to the valid identification keys...
August 24, 2017: Revista do Instituto de Medicina Tropical de São Paulo
https://www.readbyqxmd.com/read/28892868/assessing-the-feasibility-of-integrating-ecosystem-based-with-engineered-water-resource-governance-and-management-for-water-security-in-semi-arid-landscapes-a-case-study-in-the-banas-catchment-rajasthan-india
#8
Mark Everard, Om Prakash Sharma, Vinod Kumar Vishwakarma, Dharmendra Khandal, Yogesh K Sahu, Rahul Bhatnagar, Jitendra K Singh, Ritesh Kumar, Asghar Nawab, Amit Kumar, Vivek Kumar, Anil Kashyap, Deep Narayan Pandey, Adrian C Pinder
Much of the developing world and areas of the developed world suffer water vulnerability. Engineering solutions enable technically efficient extraction and diversion of water towards areas of demand but, without rebalancing resource regeneration, can generate multiple adverse ecological and human consequences. The Banas River, Rajasthan (India), has been extensively developed for water diversion, particularly from the Bisalpur Dam from which water is appropriated by powerful urban constituencies dispossessing local people...
September 7, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28890848/urbanization-alters-communities-of-flying-arthropods-in-parks-and-gardens-of-a-medium-sized-city
#9
Edward Lagucki, Justin D Burdine, Kevin E McCluney
Urbanization transforms undeveloped landscapes into built environments, causing changes in communities and ecological processes. Flying arthropods play important roles in these processes as pollinators, decomposers, and predators, and can be important in structuring food webs. The goal of this study was to identify associations between urbanization and the composition of communities of flying (and floating) arthropods within gardens and parks in a medium-sized mesic city. We predicted that flying arthropod abundance and diversity would respond strongly to percent impervious surface and distance to city center, measurements of urbanization...
2017: PeerJ
https://www.readbyqxmd.com/read/28887895/impact-of-climate-change-on-vector-transmission-of-trypanosoma-cruzi-chagas-1909-in-north-america
#10
O Carmona-Castro, D A Moo-Llanes, J M Ramsey
Climate change can influence the geographical range of the ecological niche of pathogens by altering biotic interactions with vectors and reservoirs. The distributions of 20 epidemiologically important triatomine species in North America were modelled, comparing the genetic algorithm for rule-set prediction (GARP) and maximum entropy (MaxEnt), with or without topographical variables. Potential shifts in transmission niche for Trypanosoma cruzi (Trypanosomatida: Trypanosomatidae) (Chagas, 1909) were analysed for 2050 and 2070 in Representative Concentration Pathway (RCP) 4...
September 9, 2017: Medical and Veterinary Entomology
https://www.readbyqxmd.com/read/28887877/epidemiological-and-ecological-determinants-of-zika-virus-transmission-in-an-urban-setting
#11
José Lourenço, Maricelia Maia de Lima, Nuno Rodrigues Faria, Andrew Walker, Moritz Ug Kraemer, Christian Julian Villabona-Arenas, Ben Lambert, Erenilde Marques de Cerqueira, Oliver G Pybus, Luiz Cj Alcantara, Mario Recker
The Zika virus has emerged as a global public health concern. Its rapid geographic expansion is attributed to the success of Aedes mosquito vectors, but local epidemiological drivers are still poorly understood. Feira de Santana played a pivotal role in the Chikungunya epidemic in Brazil and was one of the first urban centres to report Zika infections. Using a climate-driven transmission model and notified Zika case data, we show that a low observation rate and high vectorial capacity translated into a significant attack rate during the 2015 outbreak, with a subsequent decline in 2016 and fade-out in 2017 due to herd-immunity...
September 9, 2017: ELife
https://www.readbyqxmd.com/read/28886023/geographic-patterns-and-environmental-factors-associated-with-human-yellow-fever-presence-in-the-americas
#12
Patricia Najera Hamrick, Sylvain Aldighieri, Gustavo Machado, Deise Galan Leonel, Luz Maria Vilca, Sonia Uriona, Maria Cristina Schneider
BACKGROUND: In the Americas, yellow fever virus transmission is a latent threat due to the proximity between urban and wild environments. Although yellow fever has nearly vanished from North and Central America, there are still 13 countries in the Americas considered endemic by the World Health Organization. Human cases usually occur as a result of the exposure to sylvatic yellow fever in tropical forested environments; but urban outbreaks reported during the last decade demonstrate that the risk in this environment still exists...
September 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28884302/monitoring-vegetation-cover-in-chongqing-between-2001-and-2010-using-remote-sensing-data
#13
Qiang Xiao, Jianping Tao, Yang Xiao, Feng Qian
In this study, we applied asymmetric Gaussian function fitting to reconstruct a high-quality MODIS normalized difference vegetation index (NDVI) time series dataset. Following this, we retrieved vegetation cover data from the Chongqing area between 2001 and 2010 using this dataset, applying a dimidiate pixel method. We then used several analytical indices to analyze spatial and temporal changes and trends related to these changes. We determined that a reconstruction of the MODIS NDVI dataset using asymmetric Gaussian fitting in conjunction with a data quality weight coefficient improved data quality and created a foundation for accurate estimations of vegetation cover...
September 8, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28880235/risk-assessment-of-metals-in-urban-soils-from-a-typical-industrial-city-suzhou-eastern-china
#14
Gang Wang, Hou-Qi Liu, Yu Gong, Yang Wei, Ai-Jun Miao, Liu-Yan Yang, Huan Zhong
Risk of metals in urban soils is less studied, compared to that in other types of soils, hindering accurate assessment of human exposure to metals. In this study, the concentrations of five metals (As, Cd, Cr, Pb, and Hg) were analyzed in 167 surface soil samples collected from Suzhou city and their potential ecological and human health risks were assessed. The mean concentrations of As, Cd, Pb, and Hg except Cr, were higher than the background values in Jiangsu Province. Metal concentrations varied among districts, where sites of high contamination showed a punctate distribution...
September 7, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28872731/urbanization-reduces-and-homogenizes-trait-diversity-in-stream-macroinvertebrate-communities
#15
Thomas R Barnum, Donald E Weller, Meghan Williams
More than half the world's population lives in urban areas, so quantifying the effects of urbanization on ecological communities is important for understanding whether anthropogenic stressors homogenize communities across environmental and climatic gradients. We examined the relationship of impervious surface coverage (a marker of urbanization) and the structure of stream macroinvertebrate communities across the state of Maryland and within each of Maryland's three ecoregions: Coastal Plain, Piedmont, and Appalachian, which differ in stream geomorphology and community composition...
September 5, 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28866423/modelling-heavy-metals-build-up-on-urban-road-surfaces-for-effective-stormwater-reuse-strategy-implementation
#16
Nian Hong, Panfeng Zhu, An Liu
Urban road stormwater is an alternative water resource to mitigate water shortage issues in the worldwide. Heavy metals deposited (build-up) on urban road surface can enter road stormwater runoff, undermining stormwater reuse safety. As heavy metal build-up loads perform high variabilities in terms of spatial distribution and is strongly influenced by surrounding land uses, it is essential to develop an approach to identify hot-spots where stormwater runoff could include high heavy metal concentrations and hence cannot be reused if it is not properly treated...
August 31, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28866391/identifying-socio-ecological-networks-in-rural-urban-gradients-diagnosis-of-a-changing-cultural-landscape
#17
C Arnaiz-Schmitz, M F Schmitz, C Herrero-Jáuregui, J Gutiérrez-Angonese, F D Pineda, C Montes
Socio-ecological systems maintain reciprocal interactions between biophysical and socioeconomic structures. As a result of these interactions key essential services for society emerge. Urban expansion is a direct driver of land change and cause serious shifts in socio-ecological relationships and the associated lifestyles. The framework of rural-urban gradients has proved to be a powerful tool for ecological research about urban influences on ecosystems and on sociological issues related to social welfare. However, to date there has not been an attempt to achieve a classification of municipalities in rural-urban gradients based on socio-ecological interactions...
August 31, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28861238/explosive-radiation-and-spatial-expansion-across-the-cold-environments-of-the-old-world-in-an-avian-family
#18
Baoyan Liu, Per Alström, Urban Olsson, Jon Fjeldså, Qing Quan, Kees C S Roselaar, Takema Saitoh, Cheng-Te Yao, Yan Hao, Wenjuan Wang, Yanhua Qu, Fumin Lei
Our objective was to elucidate the biogeography and speciation patterns in an entire avian family, which shows a complex pattern of overlapping and nonoverlapping geographical distributions, and much variation in plumage, but less in size and structure. We estimated the phylogeny and divergence times for all of the world's species of Prunella based on multiple genetic loci, and analyzed morphometric divergence and biogeographical history. The common ancestor of Prunella was present in the Sino-Himalayan Mountains or these mountains and Central Asia-Mongolia more than 9 million years ago (mya), but a burst of speciations took place during the mid-Pliocene to early Pleistocene...
August 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28855386/human-movement-cooperation-and-the-effectiveness-of-coordinated-vector-control-strategies
#19
Chris M Stone, Samantha R Schwab, Dina M Fonseca, Nina H Fefferman
Vector-borne disease transmission is often typified by highly focal transmission and influenced by movement of hosts and vectors across different scales. The ecological and environmental conditions (including those created by humans through vector control programmes) that result in metapopulation dynamics remain poorly understood. The development of control strategies that would most effectively limit outbreaks given such dynamics is particularly urgent given the recent epidemics of dengue, chikungunya and Zika viruses...
August 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/28855022/simulation-of-rainfall-runoff-response-in-ecological-swale-with-on-line-subsurface-detention-using-infoworks-sd
#20
Hamed Benisi Ghadim, Lai Sai Hin
  The Bio-Ecological Drainage System (BIOECODS) is a sustainable drainage (SUDS) to demonstrate the 'control at source' approaches for urban stormwater management in Malaysia. It is an environmentally friendly drainage system that was designed to increase infiltration, reduce peak flow at outlet, improve water quality, through different BMPs, such as grass swale, retention pond, etc. A special feature of BIOECODS is ecological swale with on-line subsurface detention. This study attempted to create a model of ecological swale with on-line subsurface conveyance system with InfoWorks SD...
September 1, 2017: Water Environment Research: a Research Publication of the Water Environment Federation
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