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1.
To investigate the applicability of ecological engineering to pollution problems prevalent in present-day Central and Eastern Europe, a SCOPE-UNEP sponsored workshop was held in Estonia in November 1995. The workshop was undertaken specifically to obtain information from and to train planners, managers and scientists in the region. These ‘countries in transition' face, in many respects, unique environmental problems as a result of their recent domination by a centralized planning government system. Twenty workshop findings that resulted from workshop presentations and subsequent discussion are presented. Six papers published as part of this special issue of Ecological Engineering, and summarized here, deal with the general principles of mineland restoration, acidification effects and mitigation in Poland, reestablishment of riparian buffer strips in Estonia, recovery of forests in the Black Triangle of Czechoslovakia and Poland, restoration after 10 years near the Chernobyl nuclear plant accident in the Ukraine, and studies on remediation of contaminated soils in Belarus.  相似文献   

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Recent attention has focused on riparian forest buffer systems for filtering sediment, nutrients, and pesticides entering from upland agricultural fields. This paper summarizes the results of a field monitoring study done in Tokachikawa watershed in Hokkaido, Japan, Cisadane, Cianten and Citamyang sub-watersheds in Indonesia and Cauvery watershed, India to quantify the impact of riparian buffer zones on changes in stream water quality. A watershed approach was used to compare land use indicators – uplands, forests, riparian forest, livestock areas – to a wide range of surface water physical and chemical properties. Stream water physical property values increased from upstream to the confluence point, influenced by the upland and livestock land use activities. The greatest reduction in impairment of water quality was observed in buffer zones located along higher order streams where the gradient is very low, leading to slow groundwater movement. The lower stream water temperature in riparian buffer zones suggests that the shading effect is most pronounced in this area of the watershed. The results demonstrate the positive impact of forest buffer zones in reducing the influence of agricultural nutrients and chemicals on surface stream waters. Design and management considerations for establishing riparian zone land use are discussed.  相似文献   

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The 2nd International Symposium on Wetland Pollutant Dynamics and Control (WETPOL 2007), organised by the Department of Geography of the University of Tartu (Estonia) in co-operation with partners from the Estonian University of Life Sciences (Tartu, Estonia), Ghent University (Belgium), and the UNESCO-IHE (Delft, The Netherlands), was held 16–20 September 2007, in Tartu, Estonia. At this meeting, 140 oral presentations (including 9 keynote speeches) and 70 posters by representatives from 38 countries were presented. About half of the presentations considered purification processes in both semi-natural and constructed wetlands. The editorial paper highlights trends in studying the cycling of nitrogen, phosphorus, carbon, heavy metals, and organic pollutants in wetlands, but also in the modelling of pollutant removal and the functioning of plants in the wetland environment. It also describes the WETPOL 2007 meeting, which served as the source of the selected papers, and briefly explains the main aspects of these papers.  相似文献   

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The International Landscape Ecology Conference on “Landscape Structures, Functions and Management: Response to Global Ecological Change” hosted by the Faculty of Forestry and Wood Technology, Mendel University in Brno and the Faculty of Science, Charles University in Prague (Czech Republic) in association with the Czech regional chapter of the International Association for Landscape Ecology (CZ-IALE), and supported by the Ministry of the Environment of the Czech Republic, was held from September 3–7, 2010 in Brno, Czech Republic. At 9 parallel symposia of this meeting, 107 oral presentations (including 10 keynote speeches) and 64 posters by representatives from 19 countries were presented. The primary goals of the conference were to provide a forum for the dissemination and discussion of recent research findings, to explore future directions for water management at the landscape level and to foster interdisciplinary collaboration between researchers of all ages and from many countries. This editorial briefly describes the conference, which served as the source of the selected papers, and explains the main aspects of these papers. It highlights papers on issues related to water management under changing climate and land use at landscape and watershed levels, presented mostly at the session on functional water management through land use change.  相似文献   

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This report summarizes the events of the 1st International Functional Metagenomics Workshop. The workshop was held on May 7 and 8, 2012, in St. Jacobs, Ontario, Canada and was focused on building an international functional metagenomics community, exploring strategic research areas, and identifying opportunities for future collaboration and funding. The workshop was initiated by researchers at the University of Waterloo with support from the Ontario Genomics Institute (OGI), Natural Sciences and Engineering Research Council of Canada (NSERC) and the University of Waterloo.  相似文献   

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农业生产是将自然资源不断转化为农产品的过程。简单的说就是将阳光、空气、水和土壤等无机资源转化为可以供人类消费的有机产物。农业生态系统必须对全球气候变化、市场竞争、自然环境的恶化、经济等政策法规和人民的需求等因素做出灵活的应对策略,同时还要保证自然生态系统的稳定性。在发展中国家,有超过20亿的人口每天收入低于2美元,他们收入中绝大部分都用于解决温饱。这些人大部分生活在干旱、半干旱地区,并以农业生产作为生活的主要来源。由于这些地区水资源匮乏、土壤贫瘠,粮食安全问题一直是该地区人类生存的关键。中澳两国都把干旱、半干旱地区的农牧业发展作为研究的重点。两国的专家都致力于恢复和维护干旱半干旱地区脆弱的农业生态系统。气候变化正在使农业生态系统可持续发展面临严峻挑战。因此,迫切需要农学,生态学,环境学,社会经济学等多学科的共同发展和融合解决这一问题。2010年7月20—25日在兰州大学举办了以“气候变化和旱区农业生态系统管理”为主题的“第二届生态系统评估与管理(EAM)国际会议”。国内外众多知名专家参与了此次会议,并共同讨论在全球气候变化背景下如何提高干旱半干旱地区脆弱农业生态系统生产力与可持续性。本次会议的议题是:(1)半干旱地区旱作雨养农业生态系统评估与管理,(2)干旱地区绿洲农业生态系统评估与管理。此次会议由兰州大学和澳大利亚西澳大学联合主办,中国科学院生态环境研究中心协办,由国家教育部和国家外专局联合支持、兰州大学干旱与草地生态教育部重点实验室承担的“旱寒生态学”学科创新引智基地和西澳大学农业研究院、FAO属下的叙利亚国际旱地农业研究中心(ICARDA)联合提供资金支持。会议期间,25位专家就干旱、半干旱地区植物土壤互作关系作了报告。另外还有18位在干旱半干旱地区科研一线工作的青年学者汇报了研究进展,并与专家进行了广泛交流。报告会之后,大会组织专家分别对典型旱区农业进行了考察,分别是兰州大学黄土高原旱地农业生态实验站(榆中)和甘肃武威市民勤绿洲农业生态系统。此次大会遴选出35篇学术论文,以专刊的形式发表于《生态学报》第31卷第9期。会议遴选出的其它英文文章将于2011年在《Plant and Soil》和《Crop and Pasture Science》上发表,敬请期待。我们相信,本专刊的出版将会对气候变化背景下旱区农业生态系统的研究和发展产生重要的推动作用。  相似文献   

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 Two Exobasidium species causing Exobasidium leaf blister on Rhododendron spp. are described. An Exobasidium leaf blister on Rhododendron yedoense var. yedoense f. yedoense has been recognized in Hokkaido Prefecture, Japan, since the first report was issued in 1950. The causal fungus is identified with Exobasidium dubium from the morphology of its hymenial structure and mode of germination of the basidiospores. Another Exobasidium leaf blister on Rhododendron dauricum has been observed in Hokkaido Prefecture, Japan. In comparison with morphology based on hymenial structure and mode of germination of the basidiospores of the 100 validly described taxa, this fungus differs from those known taxa in the size of basidia and basidiospores, the numbers of sterigmata and septa of basidiospores, and the mode of germination of basidiospores. Thus, a new species, Exobasidium miyabei, is established and illustrated. Received: February 13, 2002 / Accepted: September 25, 2002  Present address: National Institute of Agrobiological Sciences, Tsukuba 305-8602, Japan Acknowledgments We profoundly appreciate the cooperation of Dr. V. Melnik in providing Russian papers and Dr. L. Vasilyeva for translating them into English. We thank Prof. H. Takahashi for loaning the materials in the Herbarium of the Hokkaido University Museum and Dr. W. Abe, Graduate School of Science, University of Hokkaido, for his kind help with the sampling of R. dauricum in Teshikaga, Hokkaido Prefecture. This study was supported in part by a Grant-in-Aid for Scientific Research (B) (No. 13460019), Japan Society for the Promotion of Science (JSPS). Contribution No. 171, Laboratory of Plant Parasitic Mycology, Institute of Agriculture and Forestry, University of Tsukuba. Correspondence to:M. Kakishima  相似文献   

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The study identified seasonal habitat use by endangered adult Sakhalin taimen Hucho perryi and the environmental characteristics of their habitat (water depth, amount of riparian forest and sinuosity). Fifteen adult H. perryi with acoustic tags were tracked by towing an acoustic receiver with a canoe in the Bekanbeushi River system in eastern Hokkaido Island, Japan, during each month from late April to late November 2008. Individuals mainly used midstream (shallower than downstream) habitats in all seasons. These locations were generally characterized by relatively dense riparian forests and high sinuosity, indicating the presence of pools. In spring, individuals used habitats with less riparian forest cover compared to mean value of the river channel. From spring to autumn, adult H. perryi selected limnologically complex habitats with meandering channels. From summer to autumn, individuals selected habitats with more riparian forest cover. The inverse relationship between H. perryi detection and riparian forest area in spring was a result of seasonal defoliation in deciduous riparian forests.  相似文献   

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Anthropologists have described, but seldom explained, the existence and persistence of common pool resource systems among hunting and gathering populations. Land tenure practices in the Fort Irwin area of the Mojave desert, California are explored. Ecological, ethnographic, archeological, and ethnohistoric information suggests that this area was jointly owned and intermittently used by several distinct ethnic groups. Although the region was important as a buffer against resource shortfall during certain seasons, sporadic use and meager and variable resource yield may have made exclusive ownership difficult and costly. A jointly managed region with common pool resources better served surrounding groups, while simultaneously creating a spatial buffer to diffuse social tensions. Following presentation of the Fort Irwin case, the paper considers the formation of such land tenure practices among hunting and gathering populations.  相似文献   

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Removal of riparian vegetation and straightening of stream channels (channelization) are the most prevalent forms of habitat degradation in streams and their riparian zones. Both have direct effects on organisms in the habitats where they occur, but also have potential to cause indirect effects by interrupting the flux of invertebrate prey between the two adjacent ecosystems. We measured abundance of web-building riparian spiders along four types of streams in Hokkaido, Japan: relatively undisturbed streams, streams where riparian vegetation had been removed, previously channelized streams where the banks had revegetated, and streams that had been both channelized and had the vegetation removed. Spider abundance was reduced by 70% or more by either habitat disturbance alone, or both combined, and the number of spider families was also reduced. Spiders of the family Tetragnathidae, which specialize in capturing adult insects emerging from streams, were strongly reduced by either form of habitat degradation alone, or in combination. In contrast, abundance of spiders in other families that capture prey from both terrestrial and aquatic sources was reduced more strongly by vegetation loss than channelization. These results indicate that riparian vegetation loss has strong direct effects on spiders by reducing habitat for web sites. They also suggest that channelization can have strong indirect effects on riparian-specialist tetragnathid spiders, probably by reducing the flux of adult aquatic insects from the stream to the riparian zone.  相似文献   

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The German Society of Parasitology (Deutsche Gesellschaft für Parasitologie) was founded in 1960 and its 21st biannual meeting took place in Würzburg, Germany, from March 17 to 20, 2004. Whereas interim meetings that are being held every other year focus on specific topics of parasitology, such as the symposia on "Life in Vacuoles" in 2003 and on "Immunomodulation by Parasites" in 2001, the general biannual meetings cover a wide range of topics. This year's meeting at the University of Würzburg was organised by Klaus Brehm and Matthias Frosch (both at the Institute of Hygiene) and Heidrun Moll (Institute for Molecular Biology of Infectious Diseases). It was attended by more than 500 scientists from 16 countries who presented 181 research projects dealing with the topics defence mechanisms and immunology, genomics and proteomics, epidemiology, cell biology and biochemistry, chemotherapy and vaccines, parasite classification and morphology, vectors, intermediate hosts, and veterinary parasitology. In addition, six plenary lectures highlighted the subjects of comparative nematode genomics, cell biology, immunology, and parasite eradication programmes.  相似文献   

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McIntyre SF 《Proteomics》2005,5(15):3828-3830
This report describes the highlights of the second scientific meeting of the British Society for Proteome Research (BSPR), jointly organised with the European Bioinformatics Institute (EBI), and held at The Genome Centre, Cambridge UK in July 2005. The theme of the meeting was "From Proteins to Systems" covering many diverse aspects of proteomics, bioinformatics and systems biology.  相似文献   

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Taniguchi N  Paulson JC 《Proteomics》2007,7(9):1360-1363
This is a short summary of a meeting entitled "The Frontiers in Glycomics; Bioinformatics and Biomarkers in Disease" which was jointly organized by the NIH Consortium for Functional Glycomics (CFG), Human Disease Glycomics/Proteome Initiative (HGPI), National Cancer Institute, National Institute of General Medical Sciences, Japan Society for the Promotion of Science and National Center for Research Resources held at the NIH Campus, Bethesda, MD, Natcher Conference Center in September 11-13, 2006.  相似文献   

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Three series of structurally related compounds, bicyclo [2.2.1]heptane, 1,7,7-trimethylbicyclo [2.2.1] heptane and cyclohexanederivatives along with five reference compounds were scaledin a perceived-odour space using a Euclidean representationvia INDSCAL and POLYCON multidimensional scaling programs. Eachof the series cluster with some secondary ordering related tothe functionality of the molecules. 1 The experimental work reported in this paper was done in fulfilmentof Ph.D. requirements jointly in the departments of Psychologyand Chemistry in the University of Canterbury by R.G.Paddick. 2 Offprint requests to R.A.M.Gregson, Department of Psychology,University of Canterbury, Christchurch, New Zealand.  相似文献   

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<正> 全国首次植物病原真菌毒素研讨会于1991年4月13—17日在南京农业大学召开,参加的单位有复旦大学、北京农业大学、江苏省农科院、沈阳农业大学、河北农业大学和南京农业大学等农业大专院校、农业科研单位和综合性大学21个单位的45位正式代表。我国著名植病学家方中达教授和植病生理学家复旦大学薛应龙教授自始至终到会指导。会议期间特邀请了国际毒素研究中心日本名古屋大学  相似文献   

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This report summarizes the lectures and posters presented at the International Society for Invertebrate Neurobiology’s 13th symposium held 26–30 August 2015, at the Balaton Limnological Institute, MTA Centre for Ecological Research, Tihany, Hungary. The symposium provided an opportunity for scientists working on a range of topics in invertebrate neurobiology to meet and present their research and discuss ways to advance the discipline.  相似文献   

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This note summarizes the results of a consultation of scientific and regulatory experts in July 2005 on the potential of transgenic crops in Bangladesh. We find that Bangladeshi experts are optimistic on the potential of agricultural biotechnology to respond to biotic and abiotic stresses in their country in the future. Public research is constrained by human capacities, infrastructure and capital investment, and transgenic crop development will require the active involvement of outside partners, such as international organizations or collaboration with private companies. We also find that social acceptance of genetic engineering is not considered a major issue, but could become one, and prompted experts to call for a wider awareness campaign on the technology.This research project was conducted as part of the South Asia Biosafety Program (SABP), a project funded by the US Agency for International Development (USAID) and jointly managed by the International Food Policy Research Institute and AGBIOS Canada. The authors would like to thank the Bangladesh Agricultural Research Council and all the participants to the meetings in Dhaka and Mymensingh for their help.  相似文献   

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