Socijalna Ekologija最新文献_第10页

A panel of microsatellite markers developed for solitary trap-nesting wasp Ancistrocerus trifasciatus (Müller, 1776) by cross-species amplification 通过跨种扩增，建立了一组微卫星标记，用于孤巢黄蜂(Ancistrocerus trifasciatus, m<s:1> ller, 1776)

Socijalna Ekologija Pub Date : 2012-08-01 DOI: 10.6001/EKOLOGIJA.V58I1.2345

Rita Radzevičiūtė, Anna Budrienė, E. Budrys, Svetlana Orlovskytė, J. Turčinavičienė

引用次数: 1

Presence and fate of manganese substances in drinking water supply systems 饮用水供应系统中锰物质的存在与归宿

Socijalna Ekologija Pub Date : 2012-08-01 DOI: 10.6001/EKOLOGIJA.V58I1.2347

M. Valentukeviciene, G. Ignatavicius

{"title":"Presence and fate of manganese substances in drinking water supply systems","authors":"M. Valentukeviciene, G. Ignatavicius","doi":"10.6001/EKOLOGIJA.V58I1.2347","DOIUrl":"https://doi.org/10.6001/EKOLOGIJA.V58I1.2347","url":null,"abstract":"A wide range of material sources may potentially contribute to contaminant loads in the potable water. The ability of water supply systems to act as emission control barriers for tap water micropollutants, thereby providing environmental benefits in addition to potable water savings, have not been fully explored. This paper investigates the sources, presence and potential fate of a selection of manganese micropollutants in laboratory scaled water supply systems. All of the investigated compounds are listed under the European Council Directive 98/83/EC on the quality of water intended for human consumption (1998) and World Health Organization Guidelines for Drinking-water Quality (2004). Significant water quality changes are identified. Hydro-chemical modelling indicates that the removal of manganese substances during water treatment is likely to be predominant due to the EC Directive manganese concentration requirement, with only minor contributions to the water supply network. Manganese compounds are resistant to biodegradation and the majority of conventional groundwater treatment plants periodically supply water with manganese residual to the potable water distribution system. Water treatment is unlikely to act as a comprehensive barrier for emission of manganese compounds. Hence, it is important to ensure that other manganese source control options (e. g. pipeline materials, manganese substance emission, and groundwater source control) for potable water supply continue to be pursued in order that emissions of manganese compounds from these sources are effectively reduced and / or phased out as required under the demands of the European Council Directive 98/83/EC on the quality of water intended for human consumption.","PeriodicalId":35175,"journal":{"name":"Socijalna Ekologija","volume":"69 3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2012-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77149830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Dalė Monika Zapkuvienė (1940 12 15–2012 03 20)

Socijalna Ekologija Pub Date : 2012-08-01 DOI: 10.6001/EKOLOGIJA.V58I1.2350

Algimantas Jakimavičius, Guoda Mackevičienė, Laima Petrauskienė

引用次数: 0

Mechanism of arsenic resistance prevalent in Bacillus species isolated from soil and ground water sources of India 从印度土壤和地下水中分离的芽孢杆菌对砷的抗性机制

Socijalna Ekologija Pub Date : 2011-12-01 DOI: 10.6001/EKOLOGIJA.V57I4.2273

Bhoomika Saluja, Abhishek Gupta, R. Goel

{"title":"Mechanism of arsenic resistance prevalent in Bacillus species isolated from soil and ground water sources of India","authors":"Bhoomika Saluja, Abhishek Gupta, R. Goel","doi":"10.6001/EKOLOGIJA.V57I4.2273","DOIUrl":"https://doi.org/10.6001/EKOLOGIJA.V57I4.2273","url":null,"abstract":"Arsenic is a naturally occurring element and its contamination of soil and groundwater is a major threat to the environment and human health. The ubiquity of arsenic in the environment has led to the evolution of the arsenic defence mechanism in certain microbes. The present study highlights identical mechanisms of arsenic resistance in two bacterial strains, namely AG24 and AGM13, which were taken from two different ecosources and states of India. The phylogenetic analysis of the strains using 16S rDNA sequence revealed both strains to be under the genus ‘Bacillus’. Furthermore, arsC gene was amplified from the strains, cloned and sequenced. The homology of the sequences of the two strains, when compared with available database using BLASTn search, showed that the 300bp amplicons obtained in both strains possess a partial arsC gene sequence which codes for arsenate reductase, an enzyme involved in the reduction of arsenate to arsenite, which is then effluxed out of the cell. Nevertheless, atomic absorption spectroscopy and scanning electron microscopy analysis of both strains also strengthen the presence of the efflux mechanism. Thus, the presence of a similar mechanism of resistance in both strains suggests the possible role of lateral gene transfer from soil to water system and vice versa which is an alarming situation for global concern.","PeriodicalId":35175,"journal":{"name":"Socijalna Ekologija","volume":"57 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74354454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Trophic peculiarities of the Great Cormorant, Grey Heron and Long-tailed Duck on the Baltic Sea Lithuanian coast: a stable isotope approach 波罗的海立陶宛海岸的大鸬鹚、灰鹭和长尾鸭的营养特性:稳定同位素方法

Socijalna Ekologija Pub Date : 2011-12-01 DOI: 10.6001/EKOLOGIJA.V57I4.2275

R. Morkūnė

{"title":"Trophic peculiarities of the Great Cormorant, Grey Heron and Long-tailed Duck on the Baltic Sea Lithuanian coast: a stable isotope approach","authors":"R. Morkūnė","doi":"10.6001/EKOLOGIJA.V57I4.2275","DOIUrl":"https://doi.org/10.6001/EKOLOGIJA.V57I4.2275","url":null,"abstract":"The stable isotopes of nitrogen (δ15N) and carbon (δ13C) were analysed in the feathers of the Great Cormorant (Phalacrocorax carbo), Grey Heron (Ardea cinerea) and Long-tailed Duck (Clangula hyemalis) staying in the different seasons at the Lithuanian Baltic Sea coast. Stable isotope ratios in bird feathers represented dietary variations and foraging habitats during the feather growth period. Adult Great Cormorants fed juveniles by smaller fish at the beginning of fledging, switching later to larger prey. The stable isotope analysis indicated that the Grey Heron diet did not change significantly during the fledging period of their juveniles. The calculated trophic levels of Great Cormorants and Grey Herons were similar (3.55 ± 0.12 and 3.57 ± 0.41, respectively). The isotopic values in Grey Herons and Great Cormorants were 14.6–16.0‰ for δ15N and –27.3–(–24.9)‰ for δ13C. These values are typical of piscivorous bird species mostly feeding in freshwater bodies, i. e. in the Curonian Lagoon. The δ15N values found in the feathers of Long-tailed Ducks ranged from 7.7 to 13.9‰ and the δ13C values ranged from –33.6 to –24.9‰ showing high variation of feeding habitats during the moulting period: from freshwater to marine environment.","PeriodicalId":35175,"journal":{"name":"Socijalna Ekologija","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86925255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

A review of and some comments on the attempts to construct an overarching theory of ecosystems plasticity 对构建生态系统可塑性总体理论的尝试进行了回顾和评述

Socijalna Ekologija Pub Date : 2011-12-01 DOI: 10.6001/EKOLOGIJA.V57I4.2272

Edmundas Lekevičius

{"title":"A review of and some comments on the attempts to construct an overarching theory of ecosystems plasticity","authors":"Edmundas Lekevičius","doi":"10.6001/EKOLOGIJA.V57I4.2272","DOIUrl":"https://doi.org/10.6001/EKOLOGIJA.V57I4.2272","url":null,"abstract":"It is generally accepted that life uses two distinct mechanisms during adaptation to the environment: evolutionary and individual. The latter is known as phenotypic plasticity. However, several decades ago, a conviction emerged and later strengthened that populations and ecological communities also tend to stabilize the essential variables (total biomass, productivity, adaptability, etc.) to a certain degree, regardless of uncertainty of environmental conditions. A response to this uncertainty is a change in the frequency of preadapted genotypes and compensatory fluctuations in population sizes. Adaptation can be regarded as a never-ending multilevel hierarchical process of individual-, population- and community-level adjustments to a changing environment. According to these concepts, adaptation is like a process during which individuals, populations and entire communities can adjust their optima to the ever-changing environmental conditions. Individual and populational rearrangements are means for a more subtle adjustment of the community optimum and the lines of defence, one following the other, on the road of stressful impacts towards the essential variables of an ecosystem. The authors of this conception, e. g. M. Conrad, V. N. Novoseltsev, H.-R. Gregorius, E. Lekevicius, also believe that these mechanisms should interact in a quite determined manner; this brings us hope that a unified theory on the plasticity of ecosystems will be developed.\u0000In this review an attempt is made to describe these concepts which are still in development and to reveal their strong, well-founded aspects as well as weak points. It is concluded that the multifarious attempts to falsify the conception are needed.","PeriodicalId":35175,"journal":{"name":"Socijalna Ekologija","volume":"172 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76459350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Distribution and habitats of Polypodium vulgare L. in Lithuania 立陶宛蓼属植物的分布和生境

Socijalna Ekologija Pub Date : 2011-12-01 DOI: 10.6001/EKOLOGIJA.V57I4.2276

Ingrida Rudnickaitė, J. Naujalis, S. Juzenas

引用次数: 1

Recent doctoral theses (ecology and environmental sciences) in Lithuania 最近在立陶宛的博士论文(生态和环境科学)

Socijalna Ekologija Pub Date : 2011-12-01 DOI: 10.6001/EKOLOGIJA.V57I4.2278

V. Kalcienė

引用次数: 0

Comparative analysis of monoterpene composition in four pine species with regard to suitability for needle consumer Diprion pini L 四种松树单萜类成分对针虫松毛虫适宜性的比较分析

Socijalna Ekologija Pub Date : 2011-12-01 DOI: 10.6001/EKOLOGIJA.V57I4.2274

Tomas Kazlauskas, V. Apšegaitė, V. Bu̅da