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Urban ecology

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https://www.readbyqxmd.com/read/28639475/ecological-correlates-of-multiple-sexual-partnerships-among-adolescents-and-young-adults-in-urban-cape-town-a-cumulative-risk-factor-approach
#1
Evans Muchiri, Clifford Odimegwu, Pamela Banda, Lorreta Ntoimo, Sunday Adedini
Studies in South Africa have reported unsafe levels of risky sexual behvaiours among adolescents and young adults, with the country reporting the highest burden of HIV/AIDS globally, as well as a high rate of teenage pregnancy. While determinants of risky sexual behaviours have been investigated for factors occurring at the individual and household levels, not fully explored in the literature is the effect of community level factors. Furthermore, it is unclear whether risk factors occurring within the ecology of adolescents and young adults act cumulatively to influence their sexual practices...
June 22, 2017: African Journal of AIDS Research: AJAR
https://www.readbyqxmd.com/read/28637855/fear-of-the-human-super-predator-reduces-feeding-time-in-large-carnivores
#2
Justine A Smith, Justin P Suraci, Michael Clinchy, Ayana Crawford, Devin Roberts, Liana Y Zanette, Christopher C Wilmers
Large carnivores' fear of the human 'super predator' has the potential to alter their feeding behaviour and result in human-induced trophic cascades. However, it has yet to be experimentally tested if large carnivores perceive humans as predators and react strongly enough to have cascading effects on their prey. We conducted a predator playback experiment exposing pumas to predator (human) and non-predator control (frog) sounds at puma feeding sites to measure immediate fear responses to humans and the subsequent impacts on feeding...
June 28, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28637649/measuring-the-distribution-of-adolescent-births-among-15-19-year-olds-in-chile-an-ecological-study
#3
Marissa Velarde, Fernando Zegers-Hochschild
BACKGROUND: Although within Latin America Chile has one of the lowest birth rates among adolescents, it has a high rate in comparison to other developed nations. AIM: To explore trends in birth rates among adolescents by selected demographics in Chile. METHODS: The national trend in birth rates was examined for women aged 15-19 years between 1992 and 2012. The birth rates for regions and communes were calculated using birth and census data and were analysed to determine its relationship to the regional or communal poverty rate, which were obtained from the Casen Survey...
June 21, 2017: Journal of Family Planning and Reproductive Health Care
https://www.readbyqxmd.com/read/28631859/determining-the-drivers-of-population-structure-in-a-highly-urbanized-landscape-to-inform-conservation-planning
#4
Henri A Thomassen, Ryan J Harrigan, Kathleen Semple Delaney, Seth P D Riley, Laurel E K Serieys, Katherine Pease, Robert K Wayne, Thomas B Smith
Understanding the environmental contributors to population structure is of paramount importance for conservation in urbanized environments. We used spatially-explicit models to determine genetic population structure under current and future environmental conditions across a highly fragmented, human-dominated environment in Southern California to assess the effects of natural ecological variation and urbanization. We focused on seven common species with diverse habitat requirements, home range sizes, and dispersal abilities...
June 20, 2017: Conservation Biology: the Journal of the Society for Conservation Biology
https://www.readbyqxmd.com/read/28631116/environmental-factors-and-zoonotic-pathogen-ecology-in-urban-exploiter-species
#5
REVIEW
Jamie L Rothenburger, Chelsea H Himsworth, Nicole M Nemeth, David L Pearl, Claire M Jardine
Knowledge of pathogen ecology, including the impacts of environmental factors on pathogen and host dynamics, is essential for determining the risk that zoonotic pathogens pose to people. This review synthesizes the scientific literature on environmental factors that influence the ecology and epidemiology of zoonotic microparasites (bacteria, viruses and protozoa) in globally invasive urban exploiter wildlife species (i.e., rock doves [Columba livia domestica], European starlings [Sturnus vulgaris], house sparrows [Passer domesticus], Norway rats [Rattus norvegicus], black rats [R...
June 19, 2017: EcoHealth
https://www.readbyqxmd.com/read/28626951/considering-the-unintentional-consequences-of-pollinator-gardens-for-urban-native-plants-is-the-road-to-extinction-paved-with-good-intentions
#6
Anna L Johnson, Andrea M Fetters, Tia-Lynn Ashman
Urban centers are important foci for plant biodiversity and yet widespread planting of wildflower gardens in cities to sustain pollinator biodiversity is on the rise, without full consideration of potential ecological consequences. The impact of intentional wildflower plantings on remnant native plant diversity in urban and peri-urban settings has not received attention, although shared pollinators are likely to mediate several types of biotic interactions between human-introduced plants and remnant native ones...
June 19, 2017: New Phytologist
https://www.readbyqxmd.com/read/28617348/urban-ecological-security-simulation-and-prediction-using-an-improved-cellular-automata-ca-approach-a-case-study-for-the-city-of-wuhan-in-china
#7
Yuan Gao, Chuanrong Zhang, Qingsong He, Yaolin Liu
Ecological security is an important research topic, especially urban ecological security. As highly populated eco-systems, cities always have more fragile ecological environments. However, most of the research on urban ecological security in literature has focused on evaluating current or past status of the ecological environment. Very little literature has carried out simulation or prediction of future ecological security. In addition, there is even less literature exploring the urban ecological environment at a fine scale...
June 15, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28617106/an-examination-of-ecological-predictors-of-health-literacy-in-black-college-students
#8
Carrie Rosario, Naomi Modeste, Hildemar Dos Santos, Daniel Handysides, Thelma Gamboa-Maldonado, Kendal Boyd
OBJECTIVE: Health literacy is a determinant of health, but disparities in health literacy persist. This study examined the influence of ecological factors on college students' health literacy. PARTICIPANTS: During January 2016 a non-random sample of Black undergraduate students (n = 298) age 18-24 were recruited from enrollment lists at two urban universities in the South-eastern US. METHODS: Information on health literacy as well as numerous intrapersonal, social, and cultural-environment factors was obtained using an electronic questionnaire and then statistically modelled...
June 15, 2017: Journal of American College Health: J of ACH
https://www.readbyqxmd.com/read/28614592/the-heat-is-on-genetic-adaptation-to-urbanization-mediated-by-thermal-tolerance-and-body-size
#9
Kristien I Brans, Mieke Jansen, Joost Vanoverbeke, Nedim Tüzün, Robby Stoks, Luc De Meester
Worldwide, urbanization leads to tremendous anthropogenic environmental alterations, causing strong selection pressures on populations of animals and plants. Although a key feature of urban areas is their higher temperature ("urban heat islands"), adaptive thermal evolution in organisms inhabiting urban areas has rarely been studied. We tested for evolution of a higher heat tolerance (CTMAX ) in urban populations of the water flea Daphnia magna, a keystone grazer in freshwater ecosystems, by carrying out a common garden experiment at two temperatures (20 °C and 24 °C) with genotypes of 13 natural populations ordered along a well-defined urbanization gradient...
June 14, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28614523/intra-urban-differences-in-rates-of-admissions-for-ambulatory-care-sensitive-conditions-in-brazil-s-center-west-region
#10
Alessandro Leonardo Alvares Magalhães, Otaliba Libânio de Morais
Admissions for ambulatory care sensitive conditions (ACSCs) represent a useful indicator of assess to and the effectiveness of primary health care. This article examined rates of admissions for ACSCs and the main causes of admissions in intra-urban areas of the municipality of Goiânia, capital of the State of Goiás. An ecological study was conducted to determine rates of admissions in Goiânia's seven health districts between 2008 and 2013 using data from Hospital Admission Authorization forms obtained from the municipality's Hospital Information System...
June 2017: Ciência & Saúde Coletiva
https://www.readbyqxmd.com/read/28614397/what-was-the-population-of-great-zimbabwe-ce1000-1800
#11
Shadreck Chirikure, Thomas Moultrie, Foreman Bandama, Collett Dandara, Munyaradzi Manyanga
The World Heritage Site of Great Zimbabwe is one of the most iconic and largest archaeological settlements in Africa. It was the hub of direct and indirect trade which internally connected various areas of southern Africa, and externally linked them with East Africa and the Near and Far East. Archaeologists believe that at its peak, Great Zimbabwe had a fully urban population of 20,000 people concentrated in approximately 2.9 square kilometres (40 percent of 720 ha). This translates to a population density of 6,897, which is comparable with that of some of the most populous regions of the world in the 21st century...
2017: PloS One
https://www.readbyqxmd.com/read/28610587/the-use-of-birds-as-pets-in-mexico
#12
Blanca Roldán-Clarà, Víctor M Toledo, Ileana Espejel
BACKGROUND: The use of birds as pets has been a historical tradition in Mexico since prehispanic times. It has survived through bird traders, called pajareros, which is a local name given to the trade (derived from pájaro, the Spanish word for bird). However, the trade of birds has not been sufficiently described; therefore, the goal of this paper is to analyze the bird trade in Mexico using the components of an ethnoecology scheme known as kosmos-corpus-praxis complex. METHODS: Qualitative research techniques were used, including ethnographic immersion, participative research, and interviews of 79 pajareros in 22 localities in nine Mexican states...
June 13, 2017: Journal of Ethnobiology and Ethnomedicine
https://www.readbyqxmd.com/read/28609466/multi-level-multi-scale-resource-selection-functions-and-resistance-surfaces-for-conservation-planning-pumas-as-a-case-study
#13
Katherine A Zeller, T Winston Vickers, Holly B Ernest, Walter M Boyce
The importance of examining multiple hierarchical levels when modeling resource use for wildlife has been acknowledged for decades. Multi-level resource selection functions have recently been promoted as a method to synthesize resource use across nested organizational levels into a single predictive surface. Analyzing multiple scales of selection within each hierarchical level further strengthens multi-level resource selection functions. We extend this multi-level, multi-scale framework to modeling resistance for wildlife by combining multi-scale resistance surfaces from two data types, genetic and movement...
2017: PloS One
https://www.readbyqxmd.com/read/28605856/nitrogen-transformations-and-removal-efficiency-enhancement-of-a-constructed-wetland-in-subtropical-taiwan
#14
Ehui Tan, Ting-Chang Hsu, Xiaofen Huang, Hsing-Juh Lin, Shuh-Ji Kao
Urbanization condenses reactive nitrogen into cities leaving threats of nitrogen pollution onto nearby environments when sewage is not properly treated. Constructed wetland is an ecological and economical way to remove reactive nitrogen. We investigated the seasonal nitrogen transformations and removal pathways in a surface-flow constructed wetland (93,000m(2) with five treatment cells), which treats domestic wastewater in subtropical Taiwan. By using isotopic pairing technique, we found denitrification exceeds anammox dominated the nitrogen removal pathway throughout seasons...
June 8, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28605549/socio-ecological-mechanisms-supporting-high-densities-of-aedes-albopictus-diptera-culicidae-in-baltimore-md
#15
E Little, D Biehler, P T Leisnham, R Jordan, S Wilson, S L LaDeau
Social, ecological, and climatic factors interact creating a heterogeneous matrix that determines the spatiotemporal distribution of mosquitoes and human risks of exposure to the diseases they transmit. We explore linkages between the social and institutional processes behind residential abandonment, urban ecology, and the interactions of socio-ecological processes with abiotic drivers of mosquito production. Specifically, we test the relative roles of infrastructure degradation and vegetation for explaining the presence of Aedes albopictus Skuse 1894 to better predict spatial heterogeneity in mosquito exposure risk within urban environments...
June 12, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28601010/heavy-metal-fractions-and-ecological-risk-assessment-in-sediments-from-urban-rural-and-reclamation-affected-rivers-of-the-pearl-river-estuary-china
#16
Guangliang Zhang, Junhong Bai, Rong Xiao, Qingqing Zhao, Jia Jia, Baoshan Cui, Xinhui Liu
Rapid urbanization and reclamation processes in coastal areas have resulted in serious pollution to the aquatic environment. Less is known on the geochemical fractions and ecological risks in river sediment under various human activities pressures, which is essential for addressing the connections between heavy metal pollution and anthropogenic influences. River sediments were collected from different landscapes (i.e., urban, rural and reclamation areas) to investigate the impacts of urbanization and reclamation on the metallic pollution levels and ecological risks in the Pear River Estuary of China...
May 29, 2017: Chemosphere
https://www.readbyqxmd.com/read/28599671/is-there-a-difference-in-prevalence-of-helminths-between-households-using-ecological-sanitation-and-those-using-traditional-pit-latrines-a-latrine-based-cross-sectional-comparative-study-in-malawi
#17
Save Kumwenda, Chisomo Msefula, Wilfred Kadewa, Yohane Diness, Charles Kato, Tracy Morse, Bagrey Ngwira
BACKGROUND: Studies have shown that households using sludge from human excreta for agriculture are at an increased risk of soil transmitted helminths. However, while use of ecological sanitation (EcoSan) latrines is increasing in most African countries including Malawi, few studies have been done to check whether use of such sludge could potentially increase the prevalence of helminthic infections among household members as a results of exposure to faecal sludge/compared to use of traditional latrines...
June 9, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28598094/-ecological-trendofthe-incidence-of-tuberculosis-in-mianyang-city-during-2004-2013
#18
Wen-Hao Zhang, Chuan Xiao, Tao Ren, Li-Ping Wang, Lan Wang, Ping Yuan
OBJECTIVES: To determine the trend of the incidence of tuberculosis (TB) in Mianyang City during 2004-2013 and its ecological determinants. METHODS: Linear correlations between TB incidence and ecological factors were analyzed using the data collected in Mianyang City from 2004 to 2013. A multivariate linear regression model was established to determine the ecological predictors of TB incidence. RESULTS: The incidence of TB in Mianyang City decreased over the period of 2004-2013...
September 2016: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/28595043/the-association-between-the-incidence-of-postmenopausal-breast-cancer-and-concentrations-at-street-level-of-nitrogen-dioxide-and-ultrafine-particles
#19
Mark S Goldberg, France Labrèche, Scott Weichenthal, Eric Lavigne, Marie-France Valois, Marianne Hatzopoulou, Keith Van Ryswyk, Maryam Shekarrizfard, Paul J Villeneuve, Daniel Crouse, Marie-Élise Parent
BACKGROUND: There is scant information as to whether traffic-related air pollution is associated with the incidence of breast cancer. Nitrogen dioxide (NO2) and ultrafine particles (UFPs, <0.1µm), are two pollutants that capture intra-urban variations in traffic-related air pollution and may also be associated with incidence. METHODS: We conducted a population-based, case-control study of street-level concentrations of NO2 and UFPs and incident postmenopausal breast cancer in Montreal, Canada...
June 5, 2017: Environmental Research
https://www.readbyqxmd.com/read/28594574/a-geospatial-epidemiologic-analysis-of-nontuberculous-mycobacterial-infection-an-ecological-study-in-colorado
#20
Ettie M Lipner, David Knox, Joshua French, Jordan Rudman, Michael Strong, James L Crooks
RATIONALE: Nontuberculous mycobacteria (NTM) are ubiquitous environmental microorganisms. Infection is thought to result primarily from exposure to soil and/or water sources. NTM disease prevalence varies greatly by geographic region, but the geospatial factors influencing this variation remain unclear. OBJECTIVES: To identify socio-demographic and environmental ecologic risk factors associated with NTM infection and disease in Colorado. METHODS: We conducted an ecological study combining data from patients with a diagnosis of NTM disease from National Jewish Health's Electronic Medical Record database and zip code-level socio-demographic and environmental exposure data obtained from the U...
June 8, 2017: Annals of the American Thoracic Society
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