89 resultados para Grafschaft Lippe


Relevância:

10.00% 10.00%

Publicador:

Resumo:

D. Lippe

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Visual traces of iron reduction and oxidation are linked to the redox status of soils and have been used to characterise the quality of agricultural soils.We tested whether this feature could also be used to explain the spatial pattern of the natural vegetation of tidal habitats. If so, an easy assessment of the effect of rising sea level on tidal ecosystems would be possible. Our study was conducted at the salt marshes of the northern lagoon of Venice, which are strongly threatened by erosion and rising sea level and are part of the world heritage 'Venice and its lagoon'. We analysed the abundance of plant species at 255 sampling points along a land-sea gradient. In addition, we surveyed the redox morphology (presence/absence of red iron oxide mottles in the greyish topsoil horizons) of the soils and the presence of disturbances. We used indicator species analysis, correlation trees and multivariate regression trees to analyse relations between soil properties and plant species distribution. Plant species with known sensitivity to anaerobic conditions (e.g. Halimione portulacoides) were identified as indicators for oxic soils (showing iron oxide mottles within a greyish soil matrix). Plant species that tolerate a low redox potential (e.g. Spartina maritima) were identified as indicators for anoxic soils (greyish matrix without oxide mottles). Correlation trees and multivariate regression trees indicate the dominant role of the redox morphology of the soils in plant species distribution. In addition, the distance from the mainland and the presence of disturbances were identified as tree-splitting variables. The small-scale variation of oxygen availability plays a key role for the biodiversity of salt marsh ecosystems. Our results suggest that the redox morphology of salt marsh soils indicates the plant availability of oxygen. Thus, the consideration of this indicator may enable an understanding of the heterogeneity of biological processes in oxygen-limited systems and may be a sensitive and easy-to-use tool to assess human impacts on salt marsh ecosystems.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

The giant panda, Ailuropoda melanoleuca is an endangered species that is protected under the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) and the Endangered Species Act (ESA). Numerous factors have led to a decline in giant panda populations in China including habitat loss from human activity, poaching, panda inbreeding and a low reproductive rate. This capstone analyzes the effects of CITES and ESA as policies for the protection of panda populations and their habitat. CITES and ESA provide some protection for panda populations in the United States. However, these policies do not address panda habitat protection in China.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Mode of access: Internet.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Mode of access: Internet.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

1. bd. Allgemeine übersicht, Baden, Bayern, Braunschweig, Colmar. 1889.--2. bd. Hannover, Hessen-Cassel, Hessen-Darmstadt, Hessen-Hanau, Mecklenburg-Schwerin, Münster, Nassau, Oldenburg. 1891.--3. bd. Österreich. 1893.--4. bd. Preussen. 1896.--5. bd. Sachsen, Schaumburg-Lippe, Schleswig-Holstein, Schweiz, Königreich Westfalen, Württemberg. 1897.--[6. bd. ] Namen-und sachregister. 1900.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Mode of access: Internet.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Mode of access: Internet.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Mode of access: Internet.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Sub-title varies.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

I. Die grafschaft Ruppin.--II. Das Oderland; Barnim-Lebus.--III. Havelland; die Landschaft um Spandau, Potsdam, Brandenburg.--IV. Spreeland, Beeskow-Storkow und Barnim-Teltow.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Initials, head and tail pieces.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Publication suspended 1913-1955.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Editors: 1914- Gerhard Gran, Francis Bull.