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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
61

Přírodovědný a historický pohled na oblast Dolního Poohří mezi Libochovicemi a Budyní nad Ohří / Natural and Historical View of the Area Dolní Poohří between Libochovice and Budyně nad Ohří

Burdová, Michaela January 2015 (has links)
Title: Natural and Historical view of the area Dolní Poohří between Libochovice and Budyně nad Ohří. Abstract: This presented thesis deals with detailed characteristics of Dolní Poohří in the area between Libochovice and Budyně nad Ohří. The theoretical part presents a general research of the area from the natural scientific and historical points of view. It outlines geological and pedological situation of the area which influences plant composition. Majority of the thesis is dedicated to the ecosystem of bottomland woods and to their historical evolution in the area of Dolní Poohří. It focuses on the flora and dendroflora of the observed locality and links them to mutual connection. It also summarizes individual local species of vegetation. This thesis also describes the history of the area and points out especially castle area Libochovice and Budyně nad Ohří from the historical point of view. It offers a brief historical overview of modifications of castle garden and park, as well as their current situation and plant composition. In the practical part, an educational tourist trail from Libochovice to Budyně nad Ohří has been designed. Route description, graphics and contents of the information panels, as well as work-lists for elementary and high school students are parts of the project design. An...
62

Des clichés protectionnistes aux approches intégratives : l'exemple des réserves naturelles de France / From rigid protection towards integrative conservation management in social-ecological systems : a study of French Nature Reserves

Therville, Clara 21 March 2013 (has links)
Les politiques de conservation de la nature ont largement évolué ces quarante dernières années. Si les premières aires protégées ont été créées selon un modèle ségrégatif, elles s’inscrivent aujourd’hui dans des modèles intégratifs. De fait, les aires protégées et leurs gestionnaires ne jouent plus les mêmes rôles au sein des socioécosystèmes. Leurs objectifs, leurs pratiques de conservation, les modes de régulation et de prise de décision, l’articulation avec les territoires environnants ont évolué. Nous nous concentrons ici sur les réserves naturelles françaises (RN), l’un des principaux outils réglementaires de protection de la nature en France. Nous caractérisons les interactions entre RN et territoires et les enjeux qui y sont liés, dans la perspective de cette transition ségrégatif – intégratif. Cette étude porte sur deux échelles distinctes : l’échelle nationale et l’ensemble des 277 RN, et l’échelle locale avec 10 études de cas. À l’échelle nationale, l’analyse de l’émergence des thématiques liées au développement durable des territoires dans le réseau des RN met en évidence les enjeux institutionnels, organisationnels, culturels et stratégiques de ce réseau, et permet de discuter la thèse d’une institutionnalisation inachevée. Nous montrons ensuite qu’il existe différents types de RN selon les pratiques mises en œuvre par les gestionnaires. Nous analysons ces investissements variés sur la base de trois types de facteurs : (i) les caractéristiques géographiques des RN ; (ii) le gestionnaire : son système de valeur et son profil socioculturel et (iii) les caractéristiques du territoire environnant. Avec nos 10 cas d’étude, nous caractérisons les socioécosystèmes constitués par les RN et les territoires environnants. Nous analysons dans le détail l’articulation identifiée à l’échelle nationale entre perceptions des acteurs, pratiques, caractéristiques des sites, des territoires et des gestionnaires, à l’intérieur des RN, mais également au-delà de leurs limites spatiales et fonctionnelles. À l’aide des cadres d’analyse des socioécosystèmes complexes, de la solidarité écologique, de la political ecology et de l’analyse institutionnelle, nous identifions les interactions entre RN et territoire, et mettons en lumière les limites des arrangements institutionnels mis en œuvre. Nous concluons sur la notion de trajectoire des sites, et dans une perspective de recherche appliquée, sur les implications de nos résultats pour le réseau des RN. / During the last four decades, nature conservation in protected areas (PAs) has been characterized by major changes. Early PAs have often been perceived as human-exclusion areas, whereas modern PAs have been designated more as integrated conservation and development projects. This evolution has involved major changes in objectives, management practices, governance systems, and relationship of PA’s to their surrounding environments. Nowadays, PA managers take into account processes that go beyond PA boundaries, investigate economic and social issues of development, and pay a special attention to local involvement. Here, we focus on French Nature Reserves (NRs), one of the main regulatory tools of the French nature protection policy. We characterize the interactions between NRs and the socioecosystems in which they interact. This study focus on two scales: the national scale and all of the 277 nature reserves, and the local scale with 10 case studies. At the national scale, we show how the emergence of sustainable development discourses in the nature reserve network have led us to analyze institutional, organizational, cultural and political issues. We describe the distribution of NR practices along a gradient going from a traditional model to an integrative model. We explain the observed practices as a combination of three types of variables : (i) general geographical characteristics of the NRs; (ii) value systems and perceptions of managers and (iii) characteristics of surrounding environments. On the basis of 10 case studies, we characterize the socioecosystems constituted by NRs and their surroundings territories. We analyze the articulation identified at the national scale between conservation practices, characteristics of NRs, territories and managers, both inside the reserves and beyond their spatial and functional boundaries. On the basis of frameworks for analyzing sustainability of complex socioecosystems, ecological solidarity, political ecology and institutional approaches, we identify the key variables in the implementation of collective action and adaptive management of both NRs and socioecosystems. Our analysis illustrates the limits of the implemented institutional arrangements. We conclude on the idea of NR trajectories, and on the practical implications of this work for the French NR system.
63

Opylování rostliny Clusia blattophila: kvalitativní a kvantitativní parametry vztahu mezi rostlinou a opylovači / Pollination of Clusia blattophila: Quality and quantity components of the plant-pollinator system

Pinc, Jan January 2015 (has links)
This work discusses the pollination system of Clusia blattophila on the Nouragues inselberg in the central part of French Guiana. The pollination system is unique, because one of the pollinators is probably a cockroach species, Amazonina platystylata. It is the third, and the last known case of cockroach pollination. Flowers are also visited by crickets (Gryllidae), flies (Diptera) belonging to the families Hybotidae, Cecidomyiidae, Dolichopodidae, and some other arthropods. This work deals with the effectiveness of the pollination system and its two components. The quantitative component of the pollination effectiveness is characterized by the number of visits and visit duration. A qualitative characteristic of pollination is characterized by the number of pollen transferred by individual pollinator. To determine quantitative characteristics, ca. 450 hours of recordings were taken. From the recordings, it is apparent that cockroaches and dipterans occur on flowers more frequently, and also that cockroaches and crickets spends on flowers more time. To determine the quantitative characteristics, pollen load on stigma and insect was determined and an exclusion experiment was performed when only some floral visitors were allowed to touch the flowers. All experiments confirm that cockroach Amazonina...
64

Val av område och områdesskydd för Natura 2000 med skogshabitat : En jämförande studie av fyra län i Sverige

Berglund, Anneli January 2008 (has links)
<p>The Natura 2000 Network is one of the European Unions many tools concerning nature conservation, and is without comparison the premier contribution when it comes to halting the loss of biodiversity. This essay is a case study on how the regional work with the Natura 2000-network has been carried out in four different counties. These counties are Södermanland, Västernorrland, Jämtland and Örebro. They have been compared based on the theoretical concept of sustainable development. This essay describes how the officials in the County Administrations view the regional implementation of Natura 2000 when it comes to the selection of Natura 2000-sites with forest habitats and the creation of an additional protective measure. This study takes its basis in a bottom-up approach which focuses on value conflicts that have emerged regionally and how different fundamental attitudes brings forward different aspects of sustainable development. Interviews with County Administration officials show that there are differences in the approach and different key factors that have affected the selection of sites and the work with area protection. One approach starts from an ecological point of view while the other takes the socio-economic aspect more into consideration during the selection process. Two main factors that have emerged are also the importance of the regional landowner-structure and the evident time- and staff shortage that has been experienced in all four counties. The results also show that the nature reserve form is the most common area protection for Natura 2000-sites with forest habitats in the four examined counties.</p> / <p>Natura 2000-nätverket är ett av EU:s många verktyg och i särklass det främsta bidraget till att hejda förlusten av den biologiska mångfalden. Denna uppsats är en fallstudie för att se hur det regionala arbetet med Natura 2000-nätverket sett ut i fyra olika län. Dessa län är Södermanland, Västernorrland, Jämtland och Örebro län. De har jämförts utifrån det teoretiska begreppet hållbar utveckling. Uppsatsen beskriver hur tjänstemän på länsstyrelserna ser på den regionala implementering av Natura 2000-nätverket när det gäller urval av Natura 2000-område med skogshabitat och tillblivelsen av ett ytterliggare områdesskydd.</p><p>Studien utgår från ett underifrånperspektiv som fokuserar på de värdekonflikter som uppstått regionalt och hur olika grundinställningar lyfter fram olika aspekter av hållbar utveckling. Intervjuer med länsstyrelsens aktörer visar att det finns skillnader i tillvägagångssättet och olika nyckelfaktorer som påverkat urvalet av område och arbetet med områdesskyddet. Det ena tillvägagångssättet tar sin grund i ett mer ekologiskt synsätt medan det andra tar större hänsyn till de socioekonomiska aspekterna i urvalsprocessen. Två huvudfaktorer som framkommit är även betydelsen av den regionala markägarstrukturen och den upplevda personal - och tidsbrist som tydligt framgår i alla de fyra undersökta länen. Resultatet visar även att naturreservatsformen är det vanligaste områdesskyddet för Natura 2000-områden med skogshabitat i de fyra studerade länen</p>
65

Val av område och områdesskydd för Natura 2000 med skogshabitat : En jämförande studie av fyra län i Sverige

Berglund, Anneli January 2008 (has links)
The Natura 2000 Network is one of the European Unions many tools concerning nature conservation, and is without comparison the premier contribution when it comes to halting the loss of biodiversity. This essay is a case study on how the regional work with the Natura 2000-network has been carried out in four different counties. These counties are Södermanland, Västernorrland, Jämtland and Örebro. They have been compared based on the theoretical concept of sustainable development. This essay describes how the officials in the County Administrations view the regional implementation of Natura 2000 when it comes to the selection of Natura 2000-sites with forest habitats and the creation of an additional protective measure. This study takes its basis in a bottom-up approach which focuses on value conflicts that have emerged regionally and how different fundamental attitudes brings forward different aspects of sustainable development. Interviews with County Administration officials show that there are differences in the approach and different key factors that have affected the selection of sites and the work with area protection. One approach starts from an ecological point of view while the other takes the socio-economic aspect more into consideration during the selection process. Two main factors that have emerged are also the importance of the regional landowner-structure and the evident time- and staff shortage that has been experienced in all four counties. The results also show that the nature reserve form is the most common area protection for Natura 2000-sites with forest habitats in the four examined counties. / Natura 2000-nätverket är ett av EU:s många verktyg och i särklass det främsta bidraget till att hejda förlusten av den biologiska mångfalden. Denna uppsats är en fallstudie för att se hur det regionala arbetet med Natura 2000-nätverket sett ut i fyra olika län. Dessa län är Södermanland, Västernorrland, Jämtland och Örebro län. De har jämförts utifrån det teoretiska begreppet hållbar utveckling. Uppsatsen beskriver hur tjänstemän på länsstyrelserna ser på den regionala implementering av Natura 2000-nätverket när det gäller urval av Natura 2000-område med skogshabitat och tillblivelsen av ett ytterliggare områdesskydd. Studien utgår från ett underifrånperspektiv som fokuserar på de värdekonflikter som uppstått regionalt och hur olika grundinställningar lyfter fram olika aspekter av hållbar utveckling. Intervjuer med länsstyrelsens aktörer visar att det finns skillnader i tillvägagångssättet och olika nyckelfaktorer som påverkat urvalet av område och arbetet med områdesskyddet. Det ena tillvägagångssättet tar sin grund i ett mer ekologiskt synsätt medan det andra tar större hänsyn till de socioekonomiska aspekterna i urvalsprocessen. Två huvudfaktorer som framkommit är även betydelsen av den regionala markägarstrukturen och den upplevda personal - och tidsbrist som tydligt framgår i alla de fyra undersökta länen. Resultatet visar även att naturreservatsformen är det vanligaste områdesskyddet för Natura 2000-områden med skogshabitat i de fyra studerade länen
66

Economic valuation of protected areas : the Umgeni Valley Nature Reserve case study.

Razafindralambo, Ramy. January 1998 (has links)
Umgeni Valley Nature Reserve as a natural area preserved from the more disruptive forms of economic activity, provides a multitude of benefits classified as either on-site use values or non-use values . This research addressed the problem of estimating the recreation use value of Umgeni Valley Nature Reserve. Two methodologies for valuing non-market benefits, the travel cost and contingent valuation methods are applied to evaluate the economic value of the reserve . The study reviews recent literature and highlights particular methodological issues characteristic of these techniques. The data from an on-site survey in the area permitted a description of visitors' socioeconomic characteristics and their trip patterns. Visitor attitudes, both to the recreational activities in Umgeni Valley Nature Reserve and to the proposals for the improvements of recreation provision were identified. Travel cost method results showed significant statistical relationships between number of trips, travel costs and socioeconomic variables. The consumer surplus value was estimated to be R95 800 in 1998. The contingent valuation method produced a true annual willingness-to-pay of R66 336 for entrance fees expressed by day visitors. The analysis of data from overnight visitors in the cottages revealed that 63 % of visitors were willing to pay up to R75 per person per night. Finally, the research emphasized the importance and the potential use of economic value in assisting the development of economically sustainable policies for the provision of recreation. Whilst Umgeni Valley Nature Reserve is under no immediate threat, having an indication of the economic value of recreational opportunities within the reserve will aid future planning and decision-making. / Thesis (M.Sc.)-University of Natal, Pietermaritzburg, 1998.
67

Study of Marine Protected Areas in Australia and in China

Liang, Qun, Physical, Environmental & Mathematical Sciences, Australian Defence Force Academy, UNSW January 2009 (has links)
Marine protected areas are recognized as an important approach to conserve marine ecosystems and biodiversity as well as to manage costal and marine resource. This thesis addresses the development and management of marine protected areas in Australia and in China. Australia and China are major maritime countries with diverse marine creatures and ecosystems. Both countries have adopted marine protected areas as a management tool to protect the marine environment. This thesis introduces their marine environment and threats, and then makes a close study of the development, legislation and management of marine protected areas in both Australia and China. Two case studies, Jervis Bay Marine Park in Australia, and Shankou Mangrove Marine Nature Reserve in China provide examples of the management strategies and lessons learnt. In order to improve the management of marine protected areas in China, the thesis analyzes the conflicts in the development of marine protected areas in China and prescribes community participation and the marine special reserve as solutions to promote the development of marine protected areas. This study also examines how the Australian Defence Force, an important stakeholder, manages its activities in the marine protected areas.
68

Ptáci Českých Budějovic (didaktické téma) / Birds of České Budějovice (educational theme)

BŘEZINOVÁ, Hana January 2013 (has links)
Diploma thesis is focused on birds in our surroundings. The main aim was to project excursions for pupils of primary schools at the Vrbenské rybníky Nature Reserve and urban parts of České Budějovice. Excursions included worksheets and motivational activities. The conceptual and structural analysis of the subject birds in selected text ? books on natural history for primary schools, own ornithological survey on sites of interest and compare the results with scientific literature. Both excursions, selected worksheet tasks and motivational activities were practically tested. Diploma thesis was solved in the project GA JU 065/2010/S.
69

Determination of international customer satisfaction levels in terms of service quality at Cape Point National Park

Siebritz, Marjorie Dawn January 2012 (has links)
Tourism has been an important economic activity in the Western Cape as it creates employment for local citizens and generates income for the province. In order for tourism to be a constant income generator, services that are offered at various accommodation establishments, attractions, restaurants and visitor information bureaus should be outstanding, as service excellence and effective word-of-mouth advertising will generate repeat business.
70

Replenishing biodiversity at Mellville Koppies Nature Reserve a biomimetic architectural response

Sherratt, Marc William 18 March 2014 (has links)
M.Tech. (Architectural Technology) / Please refer to full text to view abstract

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