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... The regional hydroclimatological effect of global climate change has been estimated and compared using a semi-empirical downscaling method with two versions (T21 and T42) of the general circulation model (GCM) developed at the Max Planck Institute for Meteorology, Germany. The comparisons were performed with daily mean temperature and daily precipitation amounts for the continental climate of the ...
Galanthus nivalis; General Circulation Models; air temperature; bioclimatology; carbon dioxide; climate change; flowering; meteorological data; statistical models; Germany
Abstract:
... We have examined the relationship between phenological data and concurrent large-scale meteorological data. As phenological data we have chosen the beginning of the flowering of Galanthus nivalis L. (flowering date) in Northern Germany, and as large-scale meteorological data we use monthly mean near-surface air temperatures for January, February and March. By means of canonical correlation analysi ...
Merops; birds; climate change; climatic factors; indicator species; invasive species; spring; temperature; winter; Alps region; Central European region; Germany; Switzerland
Abstract:
... The discovery of a document from 1644 in the Museum Heineanum at Halberstadt (Germany) encouraged to collect, so far as possible, all complete records (date, place) of the Bee-eater (Merops apiaster) north of the Alps in the period between 1500 and 1800. Comparison with long term climate curbs proved, that the Bee-Eater is a sensitive indicator for mild winters and above-average spring temperature ...
... Our objective was to assess the effect of changes in rainfall amount and distribution on CO₂ emissions and dissolved organic C (DOC) leaching. We manipulated soil moisture, using a roof constructed below the canopy of a 65-yr-old Norway spruce plantation [Picea abies (L.) Karst.] at Solling, Germany. We simulated two scenarios: a prolonged summer drought of 172 d followed by a rewetting period of ...
... In forest management there is frequently the need to make decisions with long-term consequences. Forests which are planted today may be exposed to a quite different climate within 50 to 100 years. To date, very few investigations have analysed the impacts of the projected climate changes in managed forests. Consequently there is a need for improved decision support for the development of forest ma ...
... Data from a standardized mist-netting programme (the so-called “MRI-Programm”) were used to assess the timing of breeding in Reed Warblers (Acrocephalus scirpaceus) at Lake Constance (South Germany). The number of Reed Warblers fledged early in the season increased significantly between 1976 and 1997 (rₛ=0.614; p<0.01). This is most probably due to a long-term increase in spring temperature as sug ...
climate change; decision making; emissions; federal government; issues and policy; opportunity costs; temperature; uncertainty; Germany
Abstract:
... Windows delineating tolerable or "acceptable" conditions associated with climate change can be defined in terms of a variety of parameters; a preliminary window offered by the Scientific Advisory Council on Global Change of the Federal Government of Germany sets limits on temperature change and the rate of temperature change. Investment in adaptation can alter the size and shape of these windows, ...
... Six different tephra horizons were found in peat and lacustrine sediments on the Faroe Islands in the North Atlantic. Their geochemistry showed that they were of Icelandic origin. Three of these can be correlated with previously described tephra horizons from the Faroe Islands: the Saksunarvatn tephra (c. 9000 BP), the Hekla-4 (c. 3800 BP) and Hekla-Selsund (c. 3600 BP). A previously unrecorded ba ...
climate change; data collection; empirical research; energy conversion; environment; fossil fuels; innovation adoption; markets; pollution; trade liberalization; Germany
Abstract:
... Energy market liberalisation, concerns about environmental pollution and climate change, and the dependence on fossil fuel imports render the adoption and diffusion of distributed generation technologies a field of research increasingly recognised as important. This paper contains a brief overview of both commercially available and close-to-market distributed co-generation (CHP) technologies and f ...
... Models of phenology are needed for the projection of effects of a changing climate on, for example, forest production, species competition, vegetation-atmosphere feedback and public health. A new phenology model for deciduous tree bud burst is developed and parameters are determined for a wide geographical range (Germany) and several forest tree species. The new model is based on considerations of ...
European Union; United Nations; carbon dioxide; climate change; equations; greenhouse gas emissions; greenhouse gases; guidelines; inventories; methane; models; nitrous oxide; organic soils; oxidation; peat; uncertainty; Austria; Denmark; Germany; Greece; Netherlands; Spain; Sweden
Abstract:
... This study develops a detailed methodology compatible to the Guidelines of the Intergovernmental Panel on Climate Change (IPCC) to assess the annual direct biogenic emissions of greenhouse gases (GHG) released from European agriculture. This approach relies on emission factors and regression equations derived from all long-term measurements in Europe available by the end of 2001. Applying the meth ...
Fagus sylvatica; growth rings; chronosequences; tree growth; carbon sequestration; dendrochronology; carbon; chemical constituents of plants; anthropogenic activities; tree age; atmospheric deposition; nitrogen; air temperature; climate change; Germany
Abstract:
... Past carbon (C) storage trends were estimated using dendroecological methods in a beech chronosequence in central Germany. Raw-ring-width chronologies, sensitivity curves, and carbon uptake trends were developed for 70-, 110-, and 150-year-old (S70, S110, and S150), even-aged stands. Ecosystem C stock and net ecosystem productivity (NEP(C)) were computed as the sum of the C stock and fluxes of the ...
... Five species of lichens, the majority members of a soil-crust community (Cladonia convoluta, Diploschistes muscorum, Fulgensia fulgens, Lecanora muralis, Squamarina lentigera) showed seasonal changes of temperature sensitivity of their dark respiration (DR) to such an extent that several substantially met the definition of full acclimation, i.e. near identical DR under different nocturnal temperat ...
... Recent climate changes have had distinct impacts on plant development in many parts of the world. Higher air temperatures, mainly since the end of the 1980s, have led to advanced timing of phenological phases and consequently to an extension of the general growing season. For this reason it is interesting to know how plants will respond to future climate change. In this study simple phenological m ...
... This study investigated the influence of climate on the carbon isotopic composition (δ¹³C) and oxygen isotopic enrichment (Δ¹⁸O) above the source water of different organic matter pools in European beech. In July and September 2002, δ¹³C and Δ¹⁸O were determined in phloem carbohydrates and in bulk foliage of adult beech trees along a transect from central Germany to southern France, where beech re ...
air temperature; climate change; climate models; data analysis; databases; ecosystems; environmental monitoring; epidemiological studies; geostatistics; humidity; pathogens; phenology; risk assessment; space and time; spring; summer; Germany
Abstract:
... The rise of the air temperature is assured to be part of the global climatic change, but there is still a lack of knowledge about its effects at a regional scale. The article tackles the correlation of air temperature with the phenology of selected plants by the example of Baden-Württemberg to provide a spatial valid data base for regional climate change models. To this end, the data on air temper ...
... Temperature fluctuations are a fundamental entity of the soil environment in the temperate zone and show fast (diurnal) and slow (seasonal) dynamics. Responses of soil respiration to temperature fluctuations were investigated in a root-free soil of a mid-European beech-oak forest. First, in laboratory we analysed the efflux of CO2 from soil microcosms exposed to seasonal (±5 °C of the annual mean) ...