M. Nahm
University of Freiburg
15Publications
11H-index
365Citations
Publications 15
Newest
Published on Jun 1, 2018in Gcb Bioenergy 5.42
M. Nahm11
Estimated H-index: 11
(University of Freiburg),
Christopher Morhart5
Estimated H-index: 5
(University of Freiburg)
2 Citations Source Cite
Published on Jul 13, 2017in Remote Sensing 3.41
Elena Rosskopf1
Estimated H-index: 1
,
Christopher Morhart5
Estimated H-index: 5
,
M. Nahm11
Estimated H-index: 11
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...
2 Citations Source Cite
Published on Feb 1, 2009in Forest Ecology and Management 3.17
Mariangela Fotelli8
Estimated H-index: 8
(Forest Research Institute),
M. Nahm11
Estimated H-index: 11
(University of Freiburg)
+ 3 AuthorsAndreas Matzarakis2
Estimated H-index: 2
(University of Freiburg)
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...
46 Citations Source Cite
Published on Dec 18, 2006in Trees-structure and Function 1.78
M. Nahm11
Estimated H-index: 11
(University of Freiburg),
Andreas Matzarakis34
Estimated H-index: 34
(University of Freiburg)
+ 1 AuthorsArthur Geßler20
Estimated H-index: 20
(University of Freiburg)
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...
31 Citations Source Cite
Published on Jan 1, 2006in Plant Biology 2.16
M. Nahm11
Estimated H-index: 11
(University of Freiburg),
Kalliopi Radoglou17
Estimated H-index: 17
(Forest Research Institute)
+ 3 AuthorsMariangela Fotelli8
Estimated H-index: 8
(Forest Research Institute)
: To assess the physiological performance of drought-sensitive European beech (Fagus sylvatica L.) under the dry Mediterranean climate prevailing at its southeastern distribution limit in Europe, we analyzed seasonal changes in carbon, nitrogen and water balance of naturally grown adult trees. We determined the foliar C and N contents, δ13C and δ18O signatures, total soluble non-protein nitrogen compounds (TSNN) in xylem, leaves, and phloem, as well as leaf water potential and photosynthetic qua...
28 Citations Source Cite
Published on Mar 1, 2006in European Journal of Forest Research 2.41
M. Nahm11
Estimated H-index: 11
(University of Freiburg),
Thomas Holst16
Estimated H-index: 16
(University of Freiburg)
+ 3 AuthorsArthur Geßler20
Estimated H-index: 20
(University of Freiburg)
We assessed seasonal changes of total soluble nonprotein nitrogen compounds (TSNN) in adult European beech trees (Fagus sylvatica, L.) growing under different local climate during the growing season immediately following a thinning treatment and 3 years later. In both years, samples of leaves, xylem sap and phloem exudates from beech trees growing in thinned and unthinned (control) stands on a dry, warm SW exposed and a cooler, moist NE exposed site were collected in May, July and September. In ...
26 Citations Source Cite
Published on Sep 1, 2005in Flora 1.36
Heitor Monteiro Duarte13
Estimated H-index: 13
(Technische Universität Darmstadt),
Arthur Geßler20
Estimated H-index: 20
+ 7 AuthorsUlrich Lfittge57
Estimated H-index: 57
(Technische Universität Darmstadt)
Abstract The Atlantic rain forest of Brazil is one of the 25 biodiversity hotspots of the world. It is surrounded by distinct marginal plant communities which are floristically related to the rain forest. We performed an in situ ecophysiological study of six shrub and tree species which are abundant in one or more of these marginal ecosystems. They formed three pairs of taxonomically related species, which, however, differed in geographic distribution and/or habitat preference. We aimed to answe...
26 Citations Source Cite
Published on Sep 1, 2005in Trees-structure and Function 1.78
Arthur Geßler20
Estimated H-index: 20
,
Heitor Monteiro Duarte13
Estimated H-index: 13
(Technische Universität Darmstadt)
+ 6 AuthorsHeinz Rennenberg71
Estimated H-index: 71
Three legume tree species (Fabaceae) occurring abundantly in a semi-deciduous tropical dry forest of the Atlantic forest complex in southeastern Brazil were subjected to a comparative ecophysiological study at the end of the dry season/beginning of the wet season. The trees chosen were morphologically very similar: Caesalpinia echinata Lam. and Caesalpinia ferrea Mart. ex. Tul., both 10–20 m of height, of the sub-family Caesalpinioideae, and the somewhat smaller, 2–4 m tall, Machaerium obovatum ...
37 Citations Source Cite
Published on Sep 1, 2005in Trees-structure and Function 1.78
A. Geβler5
Estimated H-index: 5
,
Heitor Monteiro Duarte13
Estimated H-index: 13
(Technische Universität Darmstadt)
+ 6 AuthorsHeinz Rennenberg71
Estimated H-index: 71
Andira legalis Vell. Toledo (Leguminosae, Papilionoideae) is a deciduous tree of the coastal vegetation of Brazil. It was studied in the restinga ecosystems of the Atlantic coast along a moisture gradient of open dry restinga (annual precipitation 800 mm, water table high at 0.9–1.2 m but partially saline), intermediate restinga (annual precipitation 1164 mm, water table low at 2–3 m) and wet restinga (annual precipitation 1000 mm, water table high at 0.5–1 m). In addition, a comparison of the e...
27 Citations Source Cite
Published on Jun 1, 2005in Trees-structure and Function 1.78
Augusto C. Franco43
Estimated H-index: 43
(University of Brasília),
Heitor Monteiro Duarte13
Estimated H-index: 13
(Technische Universität Darmstadt)
+ 6 AuthorsUlrich Lfittge57
Estimated H-index: 57
(Technische Universität Darmstadt)
Araucaria angustifolia (Bertol.) Kuntze is an indigenous conifer restricted to the southern region of South America. In this on-site field study, we provide a detailed description of the nitrogen compounds and sugars allocated to the different plant compartments in tall adult trees, young trees about 2–3 m tall and small seedlings at its northernmost occurrence in the mountains of Itatiaia (20°25′S; 44°50′W; 2,000 m a.s.l.), SE Brazil. We determined C and N contents, soluble sugars, soluble non-...
23 Citations Source Cite
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