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Title: |
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Analysis of Climate Change Affecting German Forests by Combination of Meteorological and Phenological Data within a GIS Environment |
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Authors: |
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Schröder, Winfried ; Pesch, Roland ; Schmidt, Gunther ; Englert, Cordula |
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Journal: |
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TheScientificWorldJOURNAL |
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Year: |
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2007 |
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Volume: |
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7 |
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Supplement no.: |
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S1 |
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Page Range: |
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84-89 |
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Article Type: |
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Short Communication |
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Handling Editor: |
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Andrzej Bytnerowicz |
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Domains: |
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Environmental Chemistry
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Atmospheric Systems
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Ecosystems and Communities
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Terrestrial Environmental Toxicology
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DOI: |
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10.1100/tsw.2007.15 |
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Synopsis: |
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Data on air temperature and plant phenology measured within the framework of two spatially incongruent monitoring systems in Germany were integrated into a WebGIS and were found to be spatially correlated. The biological effects of climate warming could be validated on a regional level. |
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Keywords: |
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air temperature, biomonitoring, climate change, data compilation, geostatistics, plant phenology |
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Abstract |
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The regional assessment of global change effects on plant phenology usually relies on local observations that need to be up-scaled. Therefore, methodological difficulties mostly related to data spatial resolution and congruency arise while performing broader-scale evaluations. Geostatiscs could be a useful tool to solve this type of problem, provided that a database with adequate spatial and temporal resolution is available. An assessment of variations in air temperature and plant phenology was carried out at the country level by using two German datasets regarding spring phenological phases of 15 plant species and air temperature. The data were collected from 1961–2002 at 1,279 and 675 sites, respectively. The annual mean air temperature in Germany was found to rise from 8.3°C in the 1961–1990 period to 9.1°C in the 1991–2002 term. The overall 15-species mean for the start of spring was found to be 6 days earlier in the latter period. The geostatistical analysis of the data revealed the suitability of Syringa vulgaris to be used as an indicator species to detect phenological changes in German forests. Moreover, their spatial patterns were found to be related to altitude and latitude. Therefore, geostatistics proved to be a useful tool to overcome some of the methodological problems related to the regional assessments of global change impacts on terrestrial ecosystems. |
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