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41.
Attila Kántor Maciej Kluz Czeslaw Puchalski Margarita Terentjeva 《Journal of environmental science and health. Part. B》2016,51(1):52-56
Different lactic acid bacteria strains have been shown to cause wine spoilage, including the generation of substances undesirable for the health of wine consumers. The aim of this study was to investigate the occurrence of selected species of heterofermentative lactobacilli, specifically Lactobacillus brevis, Lactobacillus hilgardii, and Lactobacillus plantarum in six different Slovak red wines following the fermentation process. In order to identify the dominant Lactobacillus strain using quantitative (real time) polymerized chain reaction (qPCR) method, pure lyophilized bacterial cultures from the Czech Collection of Microorganisms were used. Six different red wine samples following malolactic fermentation were obtained from selected wineries. After collection, the samples were subjected to a classic plate dilution method for enumeration of lactobacilli cells. Real-time PCR was performed after DNA extraction from pure bacterial strains and wine samples. We used SYBR® Green master mix reagents for measuring the fluorescence in qPCR. The number of lactobacilli ranged from 3.60 to 5.02 log CFU mL?1. Specific lactobacilli strains were confirmed by qPCR in all wine samples. The number of lactobacilli ranged from 103 to 106 CFU mL?1. A melting curve with different melting temperatures (Tm) of DNA amplicons was obtained after PCR for the comparison of Tm of control and experimental portions, revealing that the most common species in wine samples was Lactobacillus plantarum with a Tm of 84.64°C. 相似文献
42.
Assessment of Water Supply as an Ecosystem Service in a Rural-Urban Watershed in Southwestern Mexico City 总被引:1,自引:0,他引:1
Jujnovsky J González-Martínez TM Cantoral-Uriza EA Almeida-Leñero L 《Environmental management》2012,49(3):690-702
Studies from the ecosystem services perspective can provide a useful framework because they allow us to fully examine the
benefits that humans obtain from socio-ecological systems. Mexico City, the second largest city in the world, has faced severe
problems related to water shortages, which have worsened due to increasing population. Demand for space has forced changes
in land cover, including covering areas that are essential for groundwater recharge. The city has 880 km2 of forest areas that are crucial for the water supply. The Magdalena River Watershed was chosen as a model because it is
a well-preserved zone within Mexico City and it provides water for the population. The general aim of this study was to assess
the ecosystem service of the water supply in the Magdalena River Watershed by determining its water balance (SWAT model) and
the number of beneficiaries of the ecosystem services. The results showed that the watershed provides 18.4 hm3 of water per year. Baseflow was dominant, with a contribution of 85%, while surface runoff only accounted for 15%. The zone
provides drinking water to 78,476 inhabitants and could supply 153,203 potential beneficiaries. This work provides an example
for understanding how ecosystem processes determine the provision of ecosystem services and benefits to the population in
a rural–urban watershed in Mexico City. 相似文献
43.
Margarita Flores 《生态毒理学报》2000,22(2):65-67
墨西哥已经发展了一个旨在阻止并扭转环境恶化的环境保护政策框架,其中有一些环境恶化是过去不良农业实践造成的.主要政策目标传统上是最大限度提高收入,较少强调环境关注,但联邦政府目前力求把可持续发展原则运用到农业政策上.农业食品行业中要解决的主要问题,包括土地退化和水资源稀缺性的影响,以及经济考虑和与贸易有关的考虑. 相似文献
44.
Margarita Flores 《生态毒理学报》2000,22(3)
墨西哥已经发展了一个旨在阻止并扭转环境恶化的环境保护政策框架,其中有一些环境恶化是过去不良农业实践造成的.主要政策目标传统上是最大限度提高收入,较少强调环境关注,但联邦政府目前力求把可持续发展原则运用到农业政策上.农业食品行业中要解决的主要问题,包括土地退化和水资源稀缺性的影响,以及经济考虑和与贸易有关的考虑. 相似文献
45.
Anatoly V. Skalny Margarita G. Skalnaya Alexey A. Tinkov Eugeny P. Serebryansky Vasily A. Demidov Yulia N. Lobanova Andrei R. Grabeklis Elena S. Berezkina Irina V. Gryazeva Andrey A. Skalny Oksana A. Skalnaya Nikolay G. Zhivaev Alexandr A. Nikonorov 《Environmental monitoring and assessment》2015,187(11):1-8
46.
Enrico Mendes Saggioro Anabela Sousa Oliveira Thelma Pavesi Margarita Jiménez Tototzintle Manuel Ignacio Maldonado Fábio Verissimo Correia Josino Costa Moreira 《Environmental science and pollution research international》2014,21(21):12112-12121
Photocatalytic degradation of bisphenol A (BPA) in waters and wastewaters in the presence of titanium dioxide (TiO2) was performed under different conditions. Suspensions of the TiO2 were used to compare the degradation efficiency of BPA (20 mg L?1) in batch and compound parabolic collector (CPC) reactors. A TiO2 catalyst supported on glass spheres was prepared (sol–gel method) and used in a CPC solar pilot plant for the photodegradation of BPA (100 μg L?1). The influence of OH·, O2 ·?, and h + on the BPA degradation were evaluated. The radicals OH· and O2 ·? were proved to be the main species involved on BPA photodegradation. Total organic carbon (TOC) and carboxylic acids were determined to evaluate the BPA mineralization during the photodegradation process. Some toxicological effects of BPA and its photoproducts on Eisenia andrei earthworms were evaluated. The results show that the optimal concentration of suspended TiO2 to degrade BPA in batch or CPC reactors was 0.1 g L?1. According to biological tests, the BPA LC50 in 24 h for E. andrei was of 1.7?×?10?2 mg cm?2. The photocatalytic degradation of BPA mediated by TiO2 supported on glass spheres suffered strong influence of the water matrix. On real municipal wastewater treatment plant (MWWTP) secondary effluent, 30 % of BPA remains in solution; nevertheless, the method has the enormous advantage since it eliminates the need of catalyst removal step, reducing the cost of treatment. 相似文献
47.
Odalys Quevedo Alvarez Margarita Edelia Villanueva Tagle Jorge L. Gómez Pascual Ma. Teresa Larrea Marín Ana Catalina Nuñez Clemente Miriam Odette Cora Medina Raiza Rey Palau Mario Simeón Pomares Alfonso 《Environmental monitoring and assessment》2014,186(10):6867-6878
Spatial and temporal variations of sediment quality in Matanzas Bay (Cuba) were studied by determining a total of 12 variables (Zn, Cu, Pb, As, Ni, Co, Al, Fe, Mn, V, CO3 2?, and total hydrocarbons (THC). Surface sediments were collected, annually, at eight stations during 2005–2008. Multivariate statistical techniques, such as principal component (PCA), cluster (CA), and lineal discriminant (LDA) analyses were applied for identification of the most significant variables influencing the environmental quality of sediments. Heavy metals (Zn, Cu, Pb, V, and As) and THC were the most significant species contributing to sediment quality variations during the sampling period. Concentrations of V and As were determined in sediments of this ecosystem for the first time. The variation of sediment environmental quality with the sampling period and the differentiation of samples in three groups along the bay were obtained. The usefulness of the multivariate statistical techniques employed for the environmental interpretation of a limited dataset was confirmed. 相似文献
48.
49.
Victoria Reyes-García lvaro Fernndez-Llamazares Yildiz Aumeeruddy-Thomas Petra Benyei Rainer W. Bussmann Sara K. Diamond David García-del-Amo Sara Guadilla-Sez Natalia Hanazaki Nicolas Kosoy Margarita Lavides Ana C. Luz Pamela McElwee Vicky J. Meretsky Teresa Newberry Zsolt Molnr Isabel Ruiz-Malln Matthieu Salpeteur Felice S. Wyndham Francisco Zorondo-Rodriguez Eduardo S. Brondizio 《Ambio》2022,51(1):84
The Convention on Biological Diversity is defining the goals that will frame future global biodiversity policy in a context of rapid biodiversity decline and under pressure to make transformative change. Drawing on the work of Indigenous and non-Indigenous scholars, we argue that transformative change requires the foregrounding of Indigenous peoples’ and local communities’ rights and agency in biodiversity policy. We support this argument with four key points. First, Indigenous peoples and local communities hold knowledge essential for setting realistic and effective biodiversity targets that simultaneously improve local livelihoods. Second, Indigenous peoples’ conceptualizations of nature sustain and manifest CBD’s 2050 vision of “Living in harmony with nature.” Third, Indigenous peoples’ and local communities’ participation in biodiversity policy contributes to the recognition of human and Indigenous peoples’ rights. And fourth, engagement in biodiversity policy is essential for Indigenous peoples and local communities to be able to exercise their recognized rights to territories and resources. 相似文献
50.
Landscape--wildfire interactions in southern Europe: implications for landscape management 总被引:5,自引:0,他引:5
Moreira F Viedma O Arianoutsou M Curt T Koutsias N Rigolot E Barbati A Corona P Vaz P Xanthopoulos G Mouillot F Bilgili E 《Journal of environmental management》2011,92(10):2389-2402
Every year approximately half a million hectares of land are burned by wildfires in southern Europe, causing large ecological and socio-economic impacts. Climate and land use changes in the last decades have increased fire risk and danger. In this paper we review the available scientific knowledge on the relationships between landscape and wildfires in the Mediterranean region, with a focus on its application for defining landscape management guidelines and policies that could be adopted in order to promote landscapes with lower fire hazard. The main findings are that (1) socio-economic drivers have favoured land cover changes contributing to increasing fire hazard in the last decades, (2) large wildfires are becoming more frequent, (3) increased fire frequency is promoting homogeneous landscapes covered by fire-prone shrublands; (4) landscape planning to reduce fuel loads may be successful only if fire weather conditions are not extreme. The challenges to address these problems and the policy and landscape management responses that should be adopted are discussed, along with major knowledge gaps. 相似文献