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M. Nahm
University of Freiburg
16Publications
11H-index
380Citations
Publications 16
Newest
#1Elena RosskopfH-Index: 1
Last.M. NahmH-Index: 11
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Information about the availability of solar irradiance for crops is of high importance for improving management practices of agricultural ecosystems such as agroforestry systems (AFS). Hence, the development of a high-resolution model that allows for the quantification of tree shading on a diurnal and annual time scale is highly demanded to generate realistic estimations of the shading dynamics in a given AFS. We describe an approach using 3D data derived from a terrestrial laser scanner and the...
#1Christopher Morhart (University of Freiburg)H-Index: 5
#2Gerry C. Douglas (Teagasc)H-Index: 9
Last.Heinrich Spiecker (University of Freiburg)H-Index: 23
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& Context Current production from natural forests will not satisfy future world demand for timber and fuel wood, and new land management options are required. & Aims We explore an innovative production system that combines the production of short rotation coppice in wide alleys with the production of high-value trees on narrow strips of land; it is an alternative form of alley cropping which we propose to call ‘alley coppice’. The aim is to describe this alley coppice system and to illustrate it...
#1Mariangela Fotelli (Forest Research Institute)H-Index: 8
#2M. Nahm (University of Freiburg)H-Index: 11
Last.Andreas Matzarakis (University of Freiburg)H-Index: 3
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Abstract Due to its wide European distribution and its drought-susceptibility, beech ( Fagus sylvatica L.) received intensive attention recently in the light of global warming. Contrary to central European beech ecosystems, little is known about the ecophysiology of beech at its south-eastern European distribution limit. Here we tested whether climatic fluctuations during a three-year period affected the ecophysiology of a beech site in Greece. Attention was paid at comparing our findings to the...
#1M. N. Fotelli (AUA: Agricultural University of Athens)H-Index: 1
#2Kalliopi Radoglou (Forest Research Institute)H-Index: 17
Last.Heinz RennenbergH-Index: 73
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Abstract Owing to its wide European distribution and drought sensitivity, beech (Fagus sylvatica L.) has captured the attention of researchers in the context of climate change. Contrary to central European beech ecosystems, little is known about the nitrogen (N) balance of beech at its south‐eastern European distribution limit. Here we studied the seasonal variation of key N‐related parameters during the period 2003–2004, and tested whether climatic differences between the years affected the N b...
#1M. Nahm (University of Freiburg)H-Index: 11
#2Andreas Matzarakis (University of Freiburg)H-Index: 36
Last.Arthur Geßler (University of Freiburg)H-Index: 20
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During the growing season of the exceptionally dry and warm year 2003, we assessed seasonal changes in nitrogen, carbon and water balance related parameters of mature naturally grown European beech (Fagus sylvatica L.) along a North–South transect in Europe that included a beech forest stand in central Germany, two in southern Germany and one in southern France. Indicators for N balance assessed at all four sites were foliar N contents and total soluble non-protein nitrogen compounds (TSNN) in x...
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