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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.
621

En kvalitativ studie om naturområden och människans mående under covid-19 restriktioner / A qualitative study of natural areas and people’s wellbeing during covid-19 restrictions

Wimer Bergman, Clara, Nilsson, Sofie January 2021 (has links)
Den 11 mars 2020 klassificerade Världshälsoorganisationen (WHO) covid-19 viruset som en pandemi. I Sverige infördes restriktioner för att begränsa smittspridningen av viruset genom att minska människans fysiska kontakt. Under pandemin började allt fler människor besöka naturområden och besöksantalet ökade kraftigt. Syftet med studien var att undersöka förhållandet mellan människa och natur i relation till stödjande- och kulturella ekosystemtjänster som människan tillgår när hon vistas i naturen. Studiens metod utgjordes av en kvalitativ intervjustudie som bestod av två delar för att inkludera flera perspektiv. Den första intervjumetoden begränsades till fyra naturområden belägna i Skåne och en naturvårdsförvaltare från vardera område samt en vaktmästare från ett av områdena intervjuades. Den andra intervjumetoden inkluderade fem individer som vistats i skånska naturområden under pandemin. Studiens resultat visade att besöksantalet ökat markant i tre av fyra naturområden och störningen från mänsklig aktivitet har varit kraftig i vissa områden. Effekten på hur stödjande ekosystemtjänster påverkats till följd av störningar gick inte att fastställa då det inte gått tillräckligt lång tid sedan besökstrycket ökade till följd av pandemin. Människan har kunnat nyttja naturområden för avslappning, återhämtning och sociala aktiviteter och därmed har kulturella ekosystemtjänster haft en större betydelse för människan under pandemin. Studiens slutsats är att vidare forskning behövs för att undersöka vilka långtgående konsekvenser som covid-19 pandemin haft på människans och naturens mående eftersom kunskap inom området saknas. / The World Health Organization (WHO) declared the covid-19 virus a pandemic on the 11th of March 2020. Sweden introduced restrictions to limit the spread of the virus and to restrict people's physical contact with each other. During the pandemic people started to visit natural areas and the number of visitors in these places increased. The purpose of the study was to examine the relation between human and nature and the affiliation with the supportive- and cultural ecosystem services that people utilize when they spend time in nature. A qualitative interview method was chosen to fulfill the purpose of the study. We interviewed four nature conservation managers in four different natural areas in Skåne county, a caretaker in one of the areas, and five individuals who had visited natural areas during the pandemic. The result of the study displayed that the number of visitors had significantly increased in three out of four natural areas and the disturbance from human activity was potent in some of the areas. It was not possible to determine how human disturbance affected the supportive ecosystem services since not enough time had elapsed since the increase of visitors. People have used the natural areas to relax, be restored, and to engage in social activities. The cultural ecosystem services have thus been of greater importance for people during the pandemic. The study also concluded that more research is needed to examine the long-term effects of the pandemic on human’s and nature's wellbeing.
622

Hodnocení dopadů změny klimatu na vybrané ekosystémové služby v ČR: s využitím projekcí land use scénářů / Assessment of climate change impacts on selected ecosystem services in the Czech Republic: application of land use scenarios

Lorencová, Eliška January 2013 (has links)
Doctoral thesis abstract Assessment of climate change impacts on selected ecosystem services in the Czech Republic: Application of land use scenarios MSc Eliška Lorencová Climate and land use change are recognized as the greatest global environmental problems. Both considerably impact delivery of crucial ecosystem services, such as carbon sequestration, water flow regulation, erosion control, and food and fibre production. By combining future projections of ALARM scenarios (for years 2020, 2050 and 2080) with modelling of ecosystem services, the study aims to evaluate climate change impact on selected ecosystem services (carbon storage and sequestration, erosion control and sediment retention) in the Czech Republic. This study provides quantitative as well as spatially explicit analysis of the impacts on selected ecosystem services in the Czech Republic. Performed ecosystem service assessment indicates that spatial distribution of provision of ecosystem services, such as carbon storage and sequestration, sediment retention reflects the projected future land use changes. In case of carbon sequestration, SEDG scenario shows the lowest carbon sequestration rates accounting for 37,029.6 Gg C within the period 2000-2080. Stable vegetation cover is one of the factors that play important role in amount of sediment...
623

Vielfältige Landschaften: Biodiversität, Ökosystemdienstleistungen und Lebensqualität: Tagungsband mit Kurzfassungen der Beiträge zur Jahrestagung der IALE-Region Deutschland: Dresden, 10.-12. Oktober 2013

Walz, Ulrich, Syrbe, Ralf-Uwe January 2013 (has links)
Die Jahrestagung 2013 der deutschen Sektion der International Assiciation for Landscape Ecology (IALE) fand vom 10.-12.Oktober 2013 in Dresden statt. Motto der Tagung mit circa 70 Teilnehmern war "Vielfältige Landschaften: Biodiversität, Ökosystemdienstleistungen und Lebensqualität". Der Tagungsband entält die Kurzfassung der ca. 30 Tagungsbeiträge und 20 Poster.:FACHBEITRÄGE ANGELA LAUSCH, STEFFEN ZACHARIAS, ULRIKE WERBAN: Eignung der Fernerkundung zur Ableitung von räumlichen Vegetationsmustern als Funktion von Bodencharakteristik und Bodenfeuchte .................................................................. 7 JÜRGEN BREUSTE, AISA HENSEKE: Potenziale und Probleme der Anpassung an den Klimawandel durch Ökosystemdienstleistungen der Stadtvegetation – Das Beispiel Linz, Österreich ............................................................. 9 JULIANE MATHEY, STEFANIE RÖßLER: Ökosystemdienstleistungen von grünen Brachflächen in Städten – methodische Ansätze und planerische Umsetzung ............................................................................................................................... 11 PETER WERNER: Neue Herausforderungen für Biodiversitätsstrategien in Städten ......................................................... 12 DAGMAR HAASE: Urbane Ökosystemdienstleistungen in europäischen Städten – wo stehen wir? .................................. 13 GEORG SCHILLER, MICHAEL HOLFELD: Flächenbezogene Bewertung des potenziellen Bedarfs oberflächennaher Rohstoffe ......................................................................................................................................................................... 14 NEELE LARONDELLE, DAGMAR HAASE: Generische Landbedeckungs- und -nutzungsklassifikation zur Reduktion der Unsicherheit bei der Ableitung von Ökosystemfunktionen und -dienstleistungen: der Vergleich Berlin und New York City (NYC) ............................................................................................................................................................................... 15 NADJA KABISCH, DAGMAR HAASE: Gerecht verteilt? Urbane Grünflächen in Berlin. .......................................................... 16 LINDA HEUCHELE, GERD LUPP, CHRISTINA RENNER, WERNER KONOLD, DOMINIK SIEGRIST: Tourismusregionen als Modellregionen zur Entwicklung von Anpassungsstrategien im Kontext Biologische Vielfalt, Tourismus und Klimawandel – Das Beispiel Südschwarzwald ......................................................................................................................................... 17 ULRICH WALZ, ELISA MICHEL, RALF-UWE SYRBE: Biodiversität und Landschaftsstruktur – Arten und Landschaftsvielfalt ........................................................................................................................................................................................ 18 MICHAEL GLEMITZ, R. PLATEN, R. KRECHEL, J. KONRAD, F.WAGENER: Welche Beiträge können streifenförmige Energiegehölze zur biotischen Aufwertung von Arglandschaften liefern? – Ergebnisse aus dem Beispielsvorhaben Scheyern ........................................................................................................................................................................ 20 CHRISTIAN ALBERT, CHRISTOPH GÖRG: Herausforderungen und Möglichkeiten für ein Nationales Ökosystem Assessment in Deutschland – Zwischenergebnisse einer Sondierungsstudie ................................................................................... 21 FRANZISKA NYCH, ECKEHARD-GUNTER WILHELM, SUSANNE WINTER: Vegetationsökologische Untersuchung von Waldrändern in Ostsachsen .......................................................................................................................................... 22 ECKEHARD-GUNTER WILHELM, FRANZISKA NYCH, SUSANNE WINTER: Zur Phytodiversität in Kurzumtriebsplantagen ... 24 SUSANNE FRANK, CHRISTINE FÜRST, KATRIN PIETZSCH: Bewertung forstlicher und landwirtschaftlicher Managementstrategien mit Fokus auf holzartige Biomasse .......................................................................................... 26 VIKTORIA MADER, DANIELA FIEDLER, KLAUS BIRKHOFER, VOLKMAR WOLTERS, EVA DIEHL: Einfluss von lokaler Bewirtschaftung und Landschaftskontext auf netzbauende Spinnen und deren Potenzial zur biologischen Schädlingskontrolle ...................................................................................................................................................... 27 PAUL SCHULZE, CLAUDIA SCHRÖDER, VERA LUTHARDT, JUTTA ZEITZ: Ein Entscheidungs-unterstützungssystem zur torferhaltenden Bewirtschaftung organischer Böden ................................................................................................... 28 SIMONE BEICHLER, SONJA DEPPISCH: Was leistet ihre Stadt heute, und morgen? – Partizipative Erhebung von kulturellen Ökosystemdienstleistungen in Rostock ...................................................................................................... 29 JÖRG PRIES: Die ÖDL-App – neue Smartphoneanwendung zur Erfassung von Ökosystemdienstleistungen ............... 31 KAROLINE BRANDT, MICHAEL GLEMNITZ, STEPHANIE KRÄMER: Der Einfluss der Umgebungsstruktur und des landwirtschaftlichen Managements auf das Vorkommen von Blütenbesuchern in der Agrarlandschaft? ...................... 32 FRANK ROSER: Modellierung einer landesweiten Planungsgrundlage für das Schutzgut Landschaftsbild in Baden-Württemberg ............................................................................................................................................................... 33 TILL HERMANNS, KATHARINA HELMING: Nachhaltigkeitsbewertung zukünftiger Land- und Wassermanagementstrategien ……................................................................................................................................................................................ 35 OLAF BASTIAN, RALF-UWE SYRBE: Mehrwert Natur Osterzgebirge - Werte und Leistungen ausgewählter Ökosysteme .. 37 RALF-UWE SYRBE, OLAF BASTIAN, KARSTEN GRUNEWALD: Ökosystemdienstleistungen und Energiewende – Leistungen von AgrarÖkosystemen im Landkreis Görlitz …............................................................................................................. 38 KARSTEN GRUNEWALD, OLAF BASTIAN, A. KOROSHEV: Bedeutung des Geosystem- und Landschafts-konzepts für die Erfassung und Bewertung von Ökosystemdienstleistungen. Review und Anwendungsperspektiven in Deutschland und Russland ..................................................................................................................................................................... 39 MARKUS LEIBENATH, PETER WIRTH: Widerspiegelung der Energiewende und ihrer Wirkungen auf die Landschaft anhand von Landesentwicklungsplänen in Sachsen ................................................................................................................ 40 JOCHEN A. G. JAEGER, CHRISTIAN SCHWICK, FELIX KIENAST: Ist die Zersiedelung Europas unvermeidbar? Von der Messung zur Vermeidung….......................................................................................................................................... 41 JOCHEN A. G. JAEGER, MEGAN DESLAURIERS,ADRIENNE ASGARY: Messung der Konnektivität städtischer Grünflächen als Indikator im City Biodiversity Index (CBI) …................................................................................................................. 43 MARTINA ARTMANN: Straßenverkehrslärm im Siedlungsbereich – Gemeinden entlang von Autobahnen im Spannungsfeld ökonomischer, ökologischer und sozialer Interessen ….............................................................................................. 45 FELIX MÜLLER, BENJAMIN BURKHARD: Ökosystemleistungen als integratives Konzept für das Landschaftsmanagement............................................................................................................................................ 46 POSTERBEITRÄGE KENNETH ANDERS, LARS FISCHER: Werbung für Ecosystem Services ........................................................................ 49 JANA GEVERS, MICHAEL GLEMNITZ, TOKE T. HǾYE, CHRIS J. TOPPING, BORIS SCHRÖDER: Biotische Effekte eines zunehmenden Maisanbaus in unterschiedlichen Landschaftstypen …........................................................................ 50 ANDREA FRÜH-MÜLLER, FRED JOPP, VOLKMAR WOLTERS: Analyzing soil- and water related ecosystem services in cultural landscapes ................................................................................................................................................................ 52 JAN THIELE, SASCHA BUCHHOLZ, JENS SCHIRMEL: Diversity of carabids, spiders and vascular plants in agricultural landscapes: at local and landscape scales in relation to connectivity of semi-natural habitat networks .................................................................................................................................................................................... 53 JOCHEN A. G. JAEGER, LUIS F. MADRIÑÁN, CHRISTIAN SCHWICK, TOMAS SOUKUP,FELIX KIENAST: Socio-economic drivers of landscape fragmentation in Europe ........................................................................................................................ 54 NAGHMEH NAZARNIA, CHRISTIAN SCHWICK, JOCHEN A. G. JAEGER: Comparison of the increase in urban sprawl in the metropolitan areas of Montréal, Québec, and Zurich: How do they differ, and why? ................................................................................................................................................................................... 56 UNDINÉ-CELESTE THOMPSON, JEAN-FRANÇOIS MARSAN, BASTIEN FOURNIERPEYRESBLANQUES,CHANTAL FORGUES, ANITA OGAA, JOCHEN A. G. JAEGER: Using Compliance Analysis for PPP to bridge the gap between SEA and EIA: Lessons from the Turcot Interchange reconstruction in Montréal ..................................................................................................... 58 ROGER KELLER: Bedeutung und Wahrnehmung kultureller Ökosystemleistungen in der Schweiz – Überprüfung der Anwendbarkeit des Konzepts der Ökosystemleistungen für die Biodiversitäts- und Landschaftspolitik........................................................................................................................................................ 59 RALF SAUERBREI, KLEMENS EKSCHMITT, VOLKMAR WOLTERS, THOMAS K. GOTTSCHALK Increased energy maize production reduces farmland bird diversity .................................................................................................................. 61 CHRISTIAN STEIN, ULRICH WALZ: Indicators of hemeroby for land use monitoring in Germany .................................. 62 ANNA BUGEY, UTA STEINHARDT, HEIDE STEPHANI-PESSEL: Abwasser auf neuen Wegen Zukunftsfähige Schmutzwasserentsorgung im ländlichen Raum am Beispiel einer Gemeinde in der Uckermark (Brandenburg) .......... 64 MILENA MARTINSEN, PATHRICK THUR, SVEN KNOTHE, RALF ULLRICH, CLAUDIA HENZE, UTA STEINHARDT: Klimaadaptierte Regionalplanung – Aber wie? ...................................................................................................................................... 66 JENNIFER NAGEL, UTA STEINHARDT: Nachhaltige Landwirtschaft planerisch steuern? ............................................... 68 UTA STEINHARDT, INKA SCHWAND: Entwicklung von Szenarien – ein Prozess mit Unsicherheiten, Expertenwissen und Zukunftsideen auf dem Weg zu einer nachhaltigen Landnutzung…............................................................................ 70 ANJA MÜLLER, BENJAMIN BURKHARD, FELIX MÜLLER: Anwendung eines Bewertungskonzeptes für Ökosystemleistungen am Beispiel der Darss-Zingster Boddenkette …............................................................................................................ 72 M. KANDZIORA, U. SCHLEUß, F. MÜLLER: Verwendung von Bodendaten zur Ableitung von Regulierungsleistungen im Bereich der Bornhöveder Seenkette ……...................................................................................................................... 73 ANNEGRET HAASE, DAGMAR HAASE, DIETER RINK: Der Einfluss städtischer Schrumpfung auf urbane Ökosystemdienstleitungen – Synergien und Konflikte ................................................................................................ 74 PEER VON DÖHREN, DAGMAR HAASE: Urban Ecosystem Disservices ........................................................................... 75 OLAF BASTIAN, RALF-UWE SYRBE, BIRGIT KOCHAN, SYLKE STUTZRIEMER: Mehrwert Natur Osterzgebirge: Ökosystemdienstleistungen erkennen, bewerten und kommunizieren ...................................................................... 76 ANDREAS TRÄNKNER: Positive Effekte eines unwirtlichen Lebensraumes – die Heideart Lycophotia porphyrea (Lepidoptera: Noctuidae) in der Wanderdünenlandschaft auf Sylt...............................................................................77 MIKE HÖLZEL, MELANIE FORKER, CLAUDIA WALCZAK, MARITA ZIEVERINK: Erprobungs- und Entwicklungsvorhaben Grünlandverbund Oelsen (Osterzgebirge), Phase II ....................................................................................................78
624

Challenges affecting the management of Thulamela wetlands: managers engagement with local communities use of wetlands

Mukhuwana, Onica 10 1900 (has links)
MENVSC / Department of Ecology and Resource Management / Wetlands are amongst the world’s most important ecosystems providing many direct and indirect benefits to local communities. The majority of South Africans residing in rural areas depends mostly on natural resources for their livelihood. However, wetlands in South Africa continue to be the most threatened ecosystems primarily due to unsustainable use and poor resource management. Additionally, the history of South Africa has been characterised by exclusion of local communities in the process of decision-making and general management of natural resources. The aim of the study was to investigate possible challenges affecting the management of Thulamela wetlands by assessing the level of interaction and conflicting interest amongst participating stakeholders, including role of wetlands on local communities for possibly improved management scenarios. The study used questionnaires, interviews and observations to capture data on the local communities and management stakeholders. Seven wetlands within Thulamela were selected as study areas and the study population was selected based on their specialised expertise, involvement, and closeness to wetlands. Data was analysed using SPSS, Microsoft Excel and also using thematic analysis in NVIVO. The results show that selected wetlands are highly beneficial in supporting the local communities. Based on the socio-economic and demographic characteristics (family size, age, gender, and employment status) measured, the study deduced that unemployment rate or low income of the respondents is the main contributor to an increase dependency on wetland utilization. Additionally, the results revealed that unregulated use and excessive agricultural practices such as cultivation and livestock grazing are common in all study areas, hence further degradation of these wetlands. One of the findings from the study was the destruction of wetlands through expansion of human settlement. The population increase in the areas was found to be major drivers of socio-economic challenges causing people to spread through and exploit wetlands. Consequently, human settlement along the wetland area has resulted in the extensive clearance of natural wetland vegetation. Furthermore, the results show that there is poor wetland information transfer to the local communities most likely due to none/or insufficient outreach programmes. The current management arrangements and structures for selected wetlands are not being practiced through the unequal representation amongst management stakeholders and poor inclusion of local communities in management processes. Additionally, there are currently no openly known active platforms provided upon which stakeholders are able to air their views on wetlands management issues. The findings further show differences in perceptions amongst wetlands users, non-users and management stakeholders. The management stakeholders have a relatively strong focus on livelihood and environmental problems, they regard rules and regulations on wetland use’ as a relatively central variable. On the other hand, the local communities are currently more concerned about the benefits they receive from the wetlands than the conservation of those systems. The study also revealed unequal representation amongst participating management stakeholders. The findings show poor interaction between the management stakeholders and the local communities; differences in perceptions amongst resource users, non-users and managers; exploitation of wetlands resources; poor wetlands information transfer. The results suggest that centralised top-down rules and regulations on wetland use are not sufficient for maintaining the wetland ecosystem and this poses a challenge to sustainable wetland management. Therefore, there is a need to develop shared understanding through bottom-up approaches to wetland management that are nested within national regulatory frameworks, ideally combined with awareness building and knowledge sharing on the ecological benefits and management of wetland. / NRF
625

Comparative case study analysis of adaptive groundwater governance and management regimes: Exploring ecosystem services in South Africa, Spain and Germany

Knüppe, Kathrin 22 October 2012 (has links)
Our daily lives depend on the provision of services by different ecosystems in which an important contribution is made by groundwater. To balance competing demands placed on groundwater for socioeconomic and ecological benefits constitute major challenges for water managers. At the policy-science interface the ecosystem service concept represents an appropriate approach to communicate management challenges in which researchers and politicians must take into account human and biophysical characteristics as intertwined systems. This study investigated the complexity of groundwater governance, and linkages between management and corresponding effects on ecosystem services. Empirical insights were derived from case studies in South Africa, Spain and Germany. The analytical focus includes (a) the degree of vertical (multi-level) and horizontal (cross-sectoral) integration which frame crucial characteristics of an adaptive governance regime and (b) the role of formal and informal institutions governing groundwater. In doing so, an conceptual and analytical approach was applied, especially developed to support a systematic and consistent investigation of policy and management processes. Evidence highlights that higher degrees of integration: (i) opens up the political arena for environmental perspectives, (ii) increases the quality of management plans, (iii) accelerates the implementation of measurements, (iv) mitigates conflicts between different groundwater users, and (v) increases the awareness of various ecosystem services. Further the results indicate that having well-crafted institutions in place does not automatically indicate successful groundwater management in the sense of bringing about positive results for socioeconomic or ecological sustainability. This work made a significant contribution to interdisciplinary research in the field of groundwater governance and ecosystem service management that builds the foundations for improving the policy-science interface.
626

Dynamiques des prairies de montagne : intégration de la plasticité phénotypique dans un nouveau modèle à base d'agents / Mountain grasslands dynamics : integrating phenotypic plasticity in a new agent-based model

Viguier, Clément 27 November 2018 (has links)
Les prairies de montagne offrent de nombreux services ecosystémiques qui sont menacés par le changement global. Les traits fonctionnels constituent un outil prometteur pour caractériser les réponses des communautés à des changements de conditions environnementales et leurs répercussions sur les services associés. Cependant, des résulats de plus en plus nombreuses soulignent l’importance de la variabilité intra-spécifique des traits a également été mise en évidence. Pour étudier ces effets, je propose un nouveau modèle à base d’agents, MountGrass, qui combine la modélisation de communautés végétales riches en espèces avec des processus de plasticité phénotypique. Ces deux éléments au coeur du modèle sont associés grâce à des compromis d’allocation basés sur des patrons empiriques établis de stratégies d’utilisation des resources.Avec MountGrass, j’ai exploré l’impact de la plasticité phénotypique sur la croissance individuelle et les propriétés principales des communautés prairiales. À l’échelle individuelle, le modèle paramétré a révélé un fort impact positif de la plasticité phénotypique sur la croissance mais aussi sur la niche fondamentaledes espèces. Des phénomènes de convergence et de réduction de la sensibilité aux variations de conditionsexpliquent ces effets. À l’échelle des communautés, les simulations ont confirmé de forts effets de la plasticité sur la structure des communautés et leur diversité spécifique. Ces effets sont expliqués par l’effet combiné de la réduction du filtre abiotique et de la réduction des différences de compétitivité. Cependant, aucun effet majeur sur la stratégie dominante ou la productivité n’a pu être mis en évidence.Des implémentations alternatives ou des extensions du modèle devraient permettre de tester la robustesse des résultats obtenus et d’analyser d’autres schémas de dynamiques des communautés. En conclusion, ce travail ouvre la voie à une meilleure considération et une meilleure compréhension du rôle des variabilités intra-spécifiques dans les dynamiques des communautés végétales. / Mountain grasslands provide numerous ecosystem services that are likely to be impacted by global change. Plant functional traits hold great promise to succinctly characterise plant community response to changing environmental conditions and its effect on associated services; with growing evidence of the importance of intra-specific trait variability. I propose here a novel agent-based model, MountGrass, that combines the modelling of species rich grassland communities with phenotypic plasticity. These two key components are integrated via allocation trade-offs based on established empirical patterns of strategic differentiation in resource-use.With MountGrass, I explored the impact of phenotypic plasticity on individual plant growth and on main properties of grassland communities. At the individual level, the parametrised model revealed a strong impact of plasticity on growth and species’ fundamental niches, with potentially large impacts on community properties. These effects are explained by the convergence of species’ strategies and the reduction of the sensitivity to variable conditions. At the community level, simulations confirmed the strong effect of plastic allocation on community structure and species richness. These effects are driven by the cumulative effect of a reduction of both abiotic filtering and fitness differences between species. However, no clear effect on the dominant strategy or productivity could be detected.Going further, the robustness of these findings and other patterns of community dynamics should be analysed with alternative or extended implementations of MountGrass. In sum, this work opens a door towards a better integration and understanding of the role of the intra-specific variability in complex plant community dynamics.
627

Green Mind Gray Yard: Micro Scale Assessment of Ecosystem Services

Kirkpatrick, Erin Jolene 21 March 2013 (has links)
There is a spatial mismatch between the size of the area where people are living and the extent of land needed to ecologically support developed areas. More people are living in urban areas than any time in history, and the resources need to support cities have had to expand to try and meet the demands of increasing urban populations. However, areas of opportunity exist for urban areas to begin to positively contribute towards the available resources in a region. Because a large portion of urban areas is within private control, gaining a baseline understanding of how residents interact with ecosystem services served as basis of this study. Using a survey of residents in the Portland, OR area, correlations between demographic groups and questions regarding their beliefs, attitudes, and behaviors as they relate to vegetation proved that the knowledge of environmental relationships is an important first step in creating pro-environmental behavior. Those reporting a high level of knowledge for ecological system and processes were more likely to value the benefits of vegetation for other associated reasons, such as for recreational activities, aesthetic purposes, and air or water quality. Additionally, survey responses were mapped to spatial data to gain an understanding of the spatial characteristics of neighborhoods in the survey area and how they have changed over time. Overall, the results in the study display trends that can help outreach organizations and municipalities to determine plans to strategically engage the public in a way that could create a net gain in urban ecosystem services.
628

Die Betrachtung der Ökosystemleistungen „Phosphorretention“ und „Erholungs- und Freizeitnutzung“ und ihr Zusammenhang mit der Wasserqualität von Fließ- und Standgewässern in Norddeutschland

Wildner, Marcus 26 April 2022 (has links)
Phosphorretention und Freizeitnutzung an norddeutschen Tieflandseen wurden als Beispiele für den Zusammenhang von regulativen und kulturellen Ökosystemleistungen mit der Wasserqualität in norddeutschen, durchflossenen Tieflandseen untersucht. Zur Auswertung der Phosphorkonzentration in den 28 untersuchten Seen der LAWA-Typen 10 (geschichtete Seen), 11 (durchmischte Seen mit langer Wasserverweilzeit) und 12 (Flussseen mit kurzer Wasserverweilzeit) wurden die Zustrom- und Abstromkonzentrationen abflussgewichtet bilanziert. Anschließend wurde über lineare und multilineare Regressionsmodelle die Abhängigkeit verschiedener Umweltvariablen von den Phosphorbilanzen geprüft, um räumliche und zeitliche Muster der Rücklösung bzw. Retention von Phosphor in Seen zu identifizieren. Die Freizeitnutzung wurde über Umfragen sowie Tweets erfasst, um die Gewässereigenschaften sowie zeitliche und räumliche Nutzungsverteilung zu identifizieren. Norddeutsche Tieflandseen wiesen eine maximale Phosphorretention von 0,07 mg l-1 pro Jahr bzw. 0,94 mg l-1 pro Monat (Maximum im Juni) und eine maximale Phosphorfreisetzung von 0,17 mg l-1 pro Jahr bzw. 0,43 mg l-1 pro Monat (Maximum im August) zwischen 1996 und 2015 auf. Statistisch wurde insbesondere der Einfluss von Sulfat auf die Phosphorrücklösung und von Silikat auf die Phosphorretention in Flussseen und im Sommer deutlich. Das durchschnittliche Besucheraufkommen an den untersuchten Seen zwischen 2011 und 2015 betrug näherungsweise 336 Besuchern pro km² pro Tag im Uferbereich bis 50 m Entfernung um die Seen. Aus den Umfragen 2016 / 2017 ging hervor, dass vor allem Ruhe, Naturbelassenheit und schöne Landschaften erwünscht sind. Die Wasserqualität war vor allem für Schwimmende / Badende von Bedeutung und zeigte in Form des ökologischen Zustands auch einen Einfluss auf die Twitternutzer im Allgemeinen. Insbesondere Flussseen bilden gleichzeitig bedeutende, sommerliche Zentren für Algenwachstum wie auch für Freizeitaktivitäten. / Phosphorus retention and recreational use in northern German lowland lakes were investigated as examples of the connection between regulatory and cultural ecosystem services and water quality in northern German, flowed through lowland lakes. For the evaluation of phosphorus concentrations in the 28 investigated lakes of LAWA types 10 (stratified lakes), 11 (intermixed lakes with long water residence times) and 12 (river lakes with short water residence times), the inflow and outflow concentrations were balanced on a discharge-weighted basis. Subsequently, linear and multilinear regression models were used to test the dependence of various environmental variables on phosphorus balances in order to identify spatial and temporal patterns of phosphorus re-dissolution or retention in lakes. Recreational use was assessed via surveys as well as tweets to identify water body characteristics and temporal and spatial distribution of use. North German lowland lakes showed a maximum phosphorus retention of 0.07 mg l-1 per year or 0.94 mg l-1 per month (maximum in June) and a maximum phosphorus release of 0.17 mg l 1 per year or 0.43 mg l-1 per month (maximum in August) between 1996 and 2015. Statistically, the influence of sulphate on phosphorus re-dissolution and of silicate on phosphorus retention in river lakes and in summer was shown. The average number of visitors at the lakes studied between 2011 and 2015 was approximately 336 visitors per km² per day in the shore area up to 50 m distance around the lakes. From the 2016 / 2017 surveys, it emerged that tranquillity, naturalness and aesthetic landscapes were desired above all. Water quality was particularly important for swimmers / bathers and also showed an influence on Twitter users in general in the form of ecological condition. River lakes in particular form significant summer centres for algae growth as well as for recreational activities.
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Lokalt hållbart jordbruk - en nationell säkerhetsfråga? : En studie om hinder och möjligheter för utvecklingen av lokal matförsörjning som drivkraft i en hållbar samhällsutveckling

Olofsdotter, Emma January 2022 (has links)
Denna studie har gjorts i syfte att få en överblick av var det svenska livsmedelssystemet befinner sig i förhållande till de fem strategier som tagits fram och föreslås av The EAT-Lancet Commission för en global och nationell omställning av våra livsmedelssystem, och uppfyllelse av nationella och globala hållbarhetsmål. Studiens utgångspunkt startar i det lokala med anledning av jordbrukets enorma miljöpåverkan, kommunernas planmonopol över markanvändningen, och av det faktum att det är i det lokala vi lever och verkar. Resultatet visar att de utmaningar som i nuläget hindrar utvecklingen av en lokal livsmedelsproduktion framför allt är ett kunskaps-/medvetandeglapp, centraliserade strukturer och system, jordbruksmarkens nedläggning och igenväxning, kommunala prioriteringar av infrastruktur och bostäder samt slutligen bristande samverkan mellan flertalet samhällssektorer och även inom kommunerna, möjligheter och stödsystem för nyetablering och omställning till hållbara cirkulära metoder. Ett återkommande tema under webinarier och intervjuer har varit sårbarheten i importberoendet och behovet av en högre beredskap för oväntade och plötsliga händelser. Dessutom har ett människo-decentrerat perspektiv uttryckts i vikten och värdet av att återskapa en ömsesidig relation till ekosystemen. Resultatet visar att kunskap (vetenskaplig och erfarenhetsbaserad) och kulturella värden som gemenskap och livskvalitet ger ökade förutsättningar för utveckling av lokalt jordbruk, och därmed en ökad livsmedelsförsörjning. Lokalt hållbart jordbruk är rättskaligt, giftfritt och diverst. Utvecklat, har det möjligheten att skapa beredskap inför oväntade händelser och plötsliga kriser, samt gynna hållbarhet genom samtliga dimensioner. Lokal livsmedelsproduktion är ett potent verktyg för en ökad grad av nationell självförsörjning samt som betydelsefull drivkraft i en hållbar samhällsbyggnad. / This paper was made with the purpose of reaching a broad perspective of where the Swedish food system is in relation to the five strategies that were brought threw and proposed by The EAT-Lancet Commission for a global transformation of our food systems, and to reach the national and global sustainable development goals. The base for the paper takes off in the local because of the enormous environmental impact caused by agriculture, the monopoly of land use within municipalities, and by the fact that we live and act from the local context. The result shows the challenges that today are blocking the development of a local food production is first and foremost a gap of knowledge and awareness, centralized structures and systems, shutdowns and overgrowth of agricultural land, municipalities prioritizing infrastructure and habitations, and lacking co-operation within and between civil sectors, possibilities and support systems for new establishments and transformation to sustainable circular agricultural methods. A reoccurring theme during webinars and interviews have shown the vulnerability in the import dependency and the need to raise preparedness for unexpected and sudden changes. In addition, the need for a human-de-centred perspective expressing the importance and value of re-connecting a mutual relationship to the ecosystems. The result shows that knowledge (scientific and experience-based) and cultural values of community and quality of life increase the conditions of developing local agriculture, and thereby increased self-sufficiency. Local sustainable agriculture is right-scaled, toxin-free and diverse. Developed, it has the capability to create preparedness for unexpected sudden changes, and promote sustainability threw all dimensions of sustainability. Local food production is a potent tool to increase national self-sufficiency and a significant driver towards building sustainable societies.
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Ekotätning : Malmös gröna infrastruktur i förhållande till urban förtätning / Ecodense : Malmös green infrastructure in relation to urban densification

Ermanbriks, Julia, Pehrsson, Elin January 2022 (has links)
Med en växande stadspopulation världen över har förtätning av urbana områden ökat markant de senaste åren och Malmö är inget undantag. I takt med denna utveckling blir även frågan om den gröna infrastrukturens funktion och plats i den täta staden mer och mer aktuell. Detta examensarbetet syftar till att öka medvetenheten kring grön infrastruktur och ekosystemtjänster i den förtätade staden samt visa på vikten av att inkludera dessa i stadsplaneringen.Uppsatsen grundar sig i litteraturstudier och intervjuer med en en grupp av varierande kompetens inom forskningsområdet. Genom att sammanställa vilka kvaliteter och förutsättningar som finns i staden tar vi fram olika lösningar på hur man kan implementera grönska i en tät miljö. Detta resulterar i olika gestaltningsförslag med lösningar som riktar sig dels till kommunen och erbjuder en möjlighet till uppskalning som då ger en applicerbarhet på både lokal och regional nivå. Förslagen vänder sig även mot Malmös medborgare med exempel om hur man kan bidra till att skapa egna social-ekologiska system och bidra till gröna korridorer genom staden.Resultatet visar problematiken i att kombinera en tät stad med ett grönt nätverk. Det finns en vilja och ett intresse hos aktörer, ett relativt välfungerande samarbete mellan instanser samt ett fåtal handfasta verktyg som finns att tillgå för att mäta effekterna av ekosystemtjänster. I Malmö har kommunen kontroll över en liten del av stadsytan då mycket av den är privatägd, utvecklingen av den gröna infrastrukturen lämnas därför ofta till aktörer som tenderar att ha vinstdrivande intressen. Ytterligare faktorer som försvårar arbetet är att kunskapen om den gröna infrastrukturen är bristfällig, kommunikationen mellan olika parter undermålig och att förvaltningen blir lidande därefter. Det framkommer att konkurrensen om yta blir avgörande i planeringen och att det ställs höga krav på den grönska som finns i staden. Det är därför av yttersta vikt att starka samarbeten upprätthålls och att aktörer på området kontinuerligt utbildas i ämnet om grön infrastruktur och ekosystemtjänster. / The densification of urban areas have increased significantly in the last years due to the growing population in cities worldwide and Malmö is no exception. Along with this development, the question of function and place of the green infrastructure in the city is also becoming more and more relevant.This thesis aims to increase awareness of green infrastructure and ecosystem services in a dense city and show the importance of including these in urban planning.The thesis is based on a literature review and interviews with a group of varying expertise within the research area. By compiling the qualities and conditions of the city, we develop different solutions on how to implement greenery in a dense environment. This results in various design proposals where two of them entail solutions aimed at the municipality that offer an opportunity for upscaling, making them applicable at both a local and a regional level. The proposals are also aimed at the citizens of Malmö providing them with examples on how to create their own social-ecological systems and thereby contribute to green corridors throughout the city.The results display the issues of combining a dense city with a green network. There is a will and an interest among actors, a relatively well-functioning collaboration between agencies and a few tangible tools that are available to measure the effects of ecosystem services. In Malmö, the municipality has control over a small portion of the city space as much is privately owned. The development of the green infrastructure is therefore often left to actors who tend to have interests related to profit. Additional factors that further complicate the work is that there is a lack of knowledge of green infrastructure, communication between different actors is substandard and that maintenance suffers thereafter. It is made clear that the competition for space is one of the deciding factors in planning and that it puts high demands on the quality of greenery that exist in the city. It is therefore of utmost importance that strong collaborations are upheld and that stakeholders within the field are continuously educated on the subject of green infrastructure and ecosystem services.

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