Nitrogen Level and Decomposition in Scots Pine Needle Litter

Oikos ◽  
1982 ◽  
Vol 38 (3) ◽  
pp. 291 ◽  
Author(s):  
Björn Berg ◽  
Bengt Wessén ◽  
Gunnar Ekbohm ◽  
Bjorn Berg ◽  
Bengt Wessen
Keyword(s):  
Scots Pine ◽  
Nitrogen Level ◽  
Pine Needle ◽  
Needle Litter

Accumulation and release of plant nutrients in decomposing Scots pine needle litter. Long-term decomposition in a Scots pine forest II

1982 ◽  
Vol 60 (8) ◽  
pp. 1561-1568 ◽  
Author(s):  
Håkan Staaf ◽  
Björn Berg
Keyword(s):  
Weight Loss ◽  
Scots Pine ◽  
Nutrient Dynamics ◽  
Pine Forest ◽  
Plant Nutrient ◽  
Pine Needle ◽  
Needle Litter ◽  
Scots Pine Forest ◽  
Net Release

Plant nutrient dynamics in decomposing needle litter were measured during a 5-year period in a Scots pine forest in central Sweden. As seen over the whole 5-year period, the nutrients were retained (to a litter weight loss of about 75%) in the order Mn < Ca < K < Mg < S < N < P. During the first 1.5 years there was a net increase of N and P whereafter a net release took place. A similar but less pronounced development could be seen for S, whereas Ca, K, Mn, and Mg were released from the start of the incubation. It is suggested that P was the most limiting element for microbial activity during this first phase. There appeared to be only little initial leaching from the litter and the different behaviours of the elements could largely be explained by their concentration in litter in relation to the needs of microorganisms and to their solubility. K and Mg were the elements that were released at rates most similar to organic matter weight loss.

Reduction of decomposition rates of scots pine needle litter due to heavy-metal pollution

1991 ◽  
Vol 59 (1-2) ◽  
Author(s):  
Bj�rn Berg ◽  
Gunnar Ekbohm ◽  
Bengt S�derstr�m ◽  
H�kan Staaf
Keyword(s):  
Heavy Metal ◽  
Scots Pine ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Pine Needle ◽  
Decomposition Rates ◽  
Needle Litter

scholarly journals Nitrogen dynamics of decomposing Scots pine needle litter depends on colonizing fungal species

2019 ◽  
Vol 95 (6) ◽  
Author(s):  
Preetisri Baskaran ◽  
Alf Ekblad ◽  
Laure N Soucémarianadin ◽  
Riitta Hyvönen ◽  
Jürgen Schleucher ◽  
...  
Keyword(s):  
Nitrogen Cycling ◽  
Scots Pine ◽  
Nitrogen Retention ◽  
Fungal Species ◽  
Nitrogen Dynamics ◽  
Plant Production ◽  
15N Tracer ◽  
Pine Needle ◽  
Fungal Community Composition ◽  
Needle Litter

ABSTRACT In boreal ecosystems plant production is often limited by low availability of nitrogen. Nitrogen retention in below-ground organic pools plays an important role in restricting recirculation to plants and thereby hampers forest production. Saprotrophic fungi are commonly assigned to different decomposer strategies, but how these relate to nitrogen cycling remains to be understood. Decomposition of Scots pine needle litter was studied in axenic microcosms with the ligninolytic litter decomposing basidiomycete Gymnopus androsaceus or the stress tolerant ascomycete Chalara longipes. Changes in chemical composition were followed by 13C CP/MAS NMR spectroscopy and nitrogen dynamics was assessed by the addition of a 15N tracer. Decomposition by C. longipes resulted in nitrogen retention in non-hydrolysable organic matter, enriched in aromatic and alkylic compounds, whereas the ligninolytic G. androsaceus was able to access this pool, counteracting nitrogen retention. Our observations suggest that differences in decomposing strategies between fungal species play an important role in regulating nitrogen retention and release during litter decomposition, implying that fungal community composition may impact nitrogen cycling at the ecosystem level.

PAHs Sorption and Desorption on Soil Influenced by Pine Needle Litter-Derived Dissolved Organic Matter

Pedosphere ◽  
2014 ◽  
Vol 24 (5) ◽  
pp. 575-584 ◽  
Author(s):  
Xiu-Hong YANG ◽  
P. GARNIER ◽  
Shi-Zhong WANG ◽  
V. BERGHEAUD ◽  
Xiong-Fei HUANG ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Pine Needle ◽  
Needle Litter

Litter fall in some European coniferous forests as dependent on climate: a synthesis

2001 ◽  
Vol 31 (2) ◽  
pp. 292-301 ◽  
Author(s):  
B Berg ◽  
V Meentemeyer
Keyword(s):  
Picea Abies ◽  
Norway Spruce ◽  
Scots Pine ◽  
Coniferous Forests ◽  
Stand Age ◽  
Litter Fall ◽  
Climatic Parameters ◽  
Significant Relationships ◽  
Needle Litter ◽  
Pinus Spp

Litter fall data was available for 64 sites in Europe, most of them in Fennoscandia. Included were 48 sites with pine (Pinus spp.), mainly Scots pine (Pinus sylvestris L.), and 16 sites with spruce (Picea spp.), mainly Norway spruce (Picea abies (L.) Karst.). Regressions were calculated for needle and total litter fall against a set of climatic parameters, and the best simple relationships were obtained with annual actual evapotranspiration (AET) and other parameters including temperature, whereas for example, precipitation gave lower r values. For needle litter fall and AET using all data, the R2adj value was 0.635 (n = 64), and for needle litter for pine and spruce separately, the R2adj were 0.576 (n = 48) and 0.775 (n = 16), respectively. AET plus stand age gave highly significant relationships for both coniferous genera combined (R2adj = 0.683), and for pine and spruce separately the corresponding values were 0.655 and 0.843, respectively. Using all available data we found highly significant relationships between needle litter fall and total litter fall. For Fennoscandia, litter fall for Scots pine and Norway spruce were compared. AET versus needle litter fall gave highly significant relationships for Scots pine (R2adj = 0.448, n = 34) and for Norway spruce (R2adj = 0.678, n = 13); the relationships were significantly different from each other.

Scots pine needle injuries at subarctic industrial sites

Trees ◽  
1997 ◽  
Vol 11 (6) ◽  
pp. 378 ◽  
Author(s):  
E. Kukkola ◽  
Satu Huttunen ◽  
Jaana Bäck ◽  
Pasi Rautio
Keyword(s):  
Scots Pine ◽  
Pine Needle ◽  
Industrial Sites

scholarly journals Environmental quality assessment of the drainage basin of Lake Engure using Scots pine as a bioindicator

2011 ◽  
Vol 65 (5-6) ◽  
pp. 178-185
Author(s):  
Ināra Melece ◽  
Aina Karpa ◽  
Māris Laiviņš ◽  
Viesturs Melecis
Keyword(s):  
Quality Assessment ◽  
Scots Pine ◽  
Environmental Quality ◽  
Drainage Basin ◽  
Pine Bark ◽  
Research Network ◽  
Pine Needle ◽  
Environmental Quality Assessment ◽  
Gravel Roads ◽  
Bark Chemistry

Environmental quality assessment of the drainage basin of Lake Engure using Scots pine as a bioindicator Environmental quality assessment of the Lake Engure drainage area, which is the LT(S)ER region of the Latvian National Long-term Ecological Research network (Latvia LTER), was conducted using three bioindication methods based on Scots pine Pinus sylvestris L.: unspecific bioindication by pine needle tip necrosis, ground level ozone assessment by pine needle chlorotic mottling, and chemical analysis of pine bark. Samples were collected from 40 sites of the region in November 2010. Extent of needle tip necroses did not exceed class 4 (maximum possible value 6). The highest value of index of needle damage by ozone was Idam = 1.62 (maximum possible value 6). Multiple regression analysis of variables describing bark chemistry and needle damage in relation to distance from the sea, nearest roads and villages was performed. Pine bark acidity pH(KCl) and concentration of Mg and Fe decreased significantly (βpH(KCl) = -0.672, P < 0.001; βMg = -0.676, P < 0.001; βFe = -0.514, P < 0.001) with distance of sample site from gravel roads. Electric conductivity (EC) of pine bark and the extent of ozone damage of the first year needles Idam significantly decreased with distance from the sea (βozone = -0.507, P < 0.01; βEC = -0.453, P < 0.01). PCA of the pine bark chemistry data showed dust pollution from gravel roads to be the main factor responsible for the 33% variation of data. No statistically significant correlations were found between different bioindicator characteristics, except between first and second year ozone damage (ρ = 0.589, P = 0.01).

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