Web Feature Service (WFS) zum Thema Referenzwerte naturnaher Wasserhaushalt in Hamburg. Zur genaueren Beschreibung der Daten und Datenverantwortung nutzen Sie bitte den Verweis zur Datensatzbeschreibung.
Sechs Bodenfunktionen auf Grundlage der Blockkarte 1 : 50.000 (ISU50, Raumbezug Umweltatlas 1990), Bearbeitungsstand Dezember 2000.
Die Karte „Referenzwerte Naturnaher Wasserhaushalt“ ist eine wasserwirtschaftliche Planungskarte aus der die Anteile der Grundwasserneubildung, der Verdunstung und des Abflusses am Regenwasser für den naturnahen Zustand abgelesen werden können. Die Planungskarte dient der gebietsspezifischen Bestimmung von Ziel- und Orientierungsgrößen bei städteplanerischen und wasserwirtschaftlichen Fragestellungen für die Hamburger Verwaltungs- und Planungsebene. Weitere Erläuterungen siehe unter www.hamburg.de/go/1041528 (oder Link auf der MetaVer-Seite ganz unten)
Web Map Service (WMS) zum Thema Referenzwerte naturnaher Wasserhaushalt in Hamburg. Zur genaueren Beschreibung der Daten und Datenverantwortung nutzen Sie bitte den Verweis zur Datensatzbeschreibung.
Das Projekt "Natural Forest Management in Caracarai, Roraima, Brazil" wird/wurde ausgeführt durch: Universität Hamburg, Arbeitsbereich für Weltforstwirtschaft und Institut für Weltforstwirtschaft des Friedrich-Löffler-Institut, Bundesforschungsinstitut für Tiergesundheit.Objectives: Sustainable management of tropical moist forests through private forest owners will become increasingly important. Media report that in Brazil, particularly in Amazonia, approx. 80 percent of the timber harvested is from illegal sources. Private management of forests according to internationally acknowledged standards offers an opportunity to significantly lower the portion of illegally cut timber. Moreover, it contributes significantly to the conservation of the Amazon forest. Private forest owners show a clear long-term commitment towards the implementation of management standards according that is ecologically compatible, socially acceptable and economically viable. The project area, a pristine forest in legal Amazonia in the transition zone between moist tropical forests and savannas (cerrado), is extremely diverse in floristic and faunistic terms. The institute cooperates with the private forest owner. Main tasks are to document the faunistic and floristic diversity, to calculate the Annual Allowable Cut and to elaborate concepts for site-specific silviculture. Results: To date (Oct. 2006) the following activities were started: - a comprehensive inventory system for planning at the FMU-level has been successfully introduced; - the inventory system for the annual coupe area has been designed and data for the first coupe are being processed; - the annual allowable cut is currently calculated based on the results of the above described inventories; - two fauna surveys are completed; one focusing on large mammals and one on the avi-fauna. A long-term monitoring concept to assess the influence of forest management on the faunistic diversity is currently under development; - forest zoning is completed applying terrestrial surveys and interpreting high-resolution satellite images; - a study on the use of Bethollethia excelsa-fruits (Brazil nuts) is currently implemented; - a study on timber properties of lesser known species is currently implemented.
Naturwaldreservate sind besonders naturnahe Waldflächen, die auf Antrag des Waldbesitzers ausgewiesen werden. Nach Ausweisung werden die Naturwaldreservate einer natürlichen Entwicklung überlassen. Die Naturwaldreservate repräsentieren die natürlichen Waldgesellschaften landesweit und dienen der Erhaltung und Erforschung solcher Wälder sowie der Sicherung der biologischen Vielfalt. Abgesehen von notwendigen Maßnahmen des Waldschutzes und der Verkehrssicherung finden auf diesen Flächen keine Bewirtschaftungsmaßnahmen und keine Holzernte statt.
Das Projekt "Homogenisation of ECosystem functioning between Temperate and Neotropical streams due to AgRicultural land usE (HECTARE)" wird/wurde gefördert durch: Deutsche Forschungsgemeinschaft. Es wird/wurde ausgeführt durch: Helmholtz-Zentrum für Umweltforschung GmbH - UFZ, Department Seenforschung.The expansion and intensification of agricultural areas and the associated deforestation, eutrophication and modification of habitat heterogeneity remain the most important stressors to stream ecosystem functioning worldwide. The alteration of key environmental characteristics may cause the loss of functional attributes specific for streams in different climate zones and may ultimately lead to a homogenisation of stream ecosystem functioning. Previous studies were mostly restricted to a single function in a particular biome and a thorough understanding on the potential for an agriculturally driven functional homogenisation of stream ecosystems among climate zones is lacking. The project HECTARE analyses ecosystem functioning of pristine and agricultural streams situated in the German Harz and in the Brazilian Cerrado and Atlantic forest. By the novel combination of quantification of food webs and measurements of ecosystem productivity and respiration, HECTARE delivers a mechanistic understanding on energy- and matter fluxes in temperate and Neotropical streams including their trophic coupling to the catchments. Building on that, key pathways of whole-ecosystem matter and energy fluxes that are impacted by agricultural land use will be identified. The inter-biome approach proposed with HECTARE will allow for a synthesis of impact patterns associated with agricultural land use and an analysis of the degree of functional homogenisation of stream ecosystems.
Grundsatz (s. Glossar) im Regionalplan, mit dem darauf hingewirkt wird, dass verrohrte Fließgewässer und -abschnitte, deren Nutzung diesen Ausbauzustand nicht erfordern, geöffnet und naturnah gestaltet werden. Datenherkunft: - Regionaler Planungsverband Oberlausitz-Niederschlesien mit rechtlicher Grundlage Regionalplan, 1. Gesamtfortschreibung (Stand 04.02.2010) -Regionaler Planungsverband Oberes Elbtal/Osterzgebirge mit rechtlicher Grundlage Regionalplan, 1. Gesamtfortschreibung (Stand 19.11.2009) -Planungsverband Region Chemnitz mit rechtlicher Grundlage Regionalplan Chemnitz-Erzgebirge, Fortschreibung (Stand 31.07.2008) und Regionalplan Südwestsachsen, 1. Gesamtfortschreibung (Stand 06.10.2011)
"Grundsatz (s. Glossar) im Regionalplan, mit dem darauf hingewirkt wird, dass naturfern ausgebaute Fließgewässer und -abschnitte durch Gewässerausbaumaßnahmen naturnah und landschaftsgerecht gestaltet werden. Datenherkunft: - Regionaler Planungsverband Oberlausitz-Niederschlesien mit rechtlicher Grundlage Regionalplan, 1. Gesamtfortschreibung (Stand 04.02.2010) -Regionaler Planungsverband Oberes Elbtal/Osterzgebirge mit rechtlicher Grundlage Regionalplan, 1. Gesamtfortschreibung (Stand 19.11.2009) -Planungsverband Region Chemnitz mit rechtlicher Grundlage Regionalplan Chemnitz-Erzgebirge, Fortschreibung (Stand 31.07.2008) und Regionalplan Südwestsachsen, 1. Gesamtfortschreibung (Stand 06.10.2011)
Das Projekt "The influence of climate change and extreme weather events on plant invasions" wird/wurde gefördert durch: Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung. Es wird/wurde ausgeführt durch: Eidgenössische Technische Hochschule Zürich, Institut für Agrarwissenschaften, Departement Biologie.Background Global environmental change is threatening ecosystems and biodiversity worldwide. Important components of global change are, among others, land-use changes, climate change and biological invasions. While the effects of each aspect alone have been studied intensively, the interactions between two or more aspects are much more difficult to assess. However, it is obvious that there are and will be interactions, which will very likely have synergistic effects. An obvious interaction is between climate change and biotic exchange. The chance that this interaction will speed up invasion processes and will threaten biodiversity and ecosystem functioning even more is very high. Climate in Central Europe is projected to become on average warmer, but also more extreme, i.e. there will be a higher occurrence of floods and droughts. Effects of these changes on plants have been documented already. Especially high-altitude ecosystems, which are highly specialized and adapted to the current conditions, seem highly vulnerable to these changes in climate. Whether these changes will favour alien species more than native species, however, has only been discussed in the literature, but experimental tests are lacking so far. Specific Aims The proposed study aims to assess whether alien species can profit more from the projected climate change than native species, and whether this will enable them to successfully invade native plant communities, especially pristine alpine meadows. In addition the project investigates the effects of extreme weather events on the individual plant species and on the invasion process in general. Methods and Experimental Design We will use two approaches to test our hypotheses. We will compare the reaction of native and alien species in a controlled garden experiment under ambient and changed climatic conditions (increased mean temperature and extreme weather events, i.e. drought and flooding). We will assess the invasiveness under these conditions as well as the invasibility of native meadow communities. In a transplant experiment in the field along altitudinal gradients we will test the reaction of in-situ native communities and alien species to increased temperature and drought and quantify the invasion success under these changed conditions. Expected Value of the Proposed Project We expect the proposed project to provide first insights into the proposed synergistic effects of climate change and plant invasions and especially on the effects of extreme weather events on the invasibility of native meadow communities, in particular alpine communities. The results will help to assess the potential combined threats of climate change and biotic invasions to native plant communities and provide a basis for the development of policies to control plant invasions, especially to protect fragile mountain ecosystems.