Extremely narrow and wide tree rings in the Norway spruce (Picea abies (L.) Karst.) of the Białowieża National Park

In the years 1987–1993 research aimed at the qualitative and quantitative composition of insects inhabiting the cones of Norway spruce (Picea abies [L.] Karst.) was carried out in the area of the Tatra National Park (Poland) for the first time. Approximately 72 thousand specimens of insects were obtained, representing 50 species from 8 orders. Kaltenbachiola strobi (Winn.), Plemeliella abietina Seitn. and Cydia strobilella L. were among the most frequently occurring species. The entomofauna of ripening, ripe and old, already lignified cones was determined, and among the insects found trophic groups were distinguished and, consequently, characterized by means of the following ecological indexes: constancy, dominance and species diversity. The qualitative and quantitative composition of spruce (P. abies) cone entomofauna was changing along with the development of the cones, due to the periods of occupancy and leaving the cones by species of varied bioecology. The entomofauna of ripe cones was characterized by higher species diversity (42 species) than that of ripening cones (25 species) and old cones (26 species).

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The mobility of nitrogen across tree-rings of Norway spruce (Picea abies L.) and the effect of extraction method on tree-ring δ15 N and δ13 C values

Rapid Communications in Mass Spectrometry ◽

10.1002/rcm.6897 ◽

2014 ◽

Vol 28 (11) ◽

pp. 1258-1264 ◽

Cited By ~ 8

Author(s):

G. Tomlinson ◽

R. T. W. Siegwolf ◽

N. Buchmann ◽

P. Schleppi ◽

P. Waldner ◽

...

Keyword(s):

Picea Abies ◽

Norway Spruce ◽

Tree Ring ◽

Tree Rings ◽

Extraction Method

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Decline of Norway spruce in the Krkonoše Mts.

Journal of Forest Science ◽

10.17221/95/2009-jfs ◽

2010 ◽

Vol 56 (No. 8) ◽

pp. 361-372 ◽

Cited By ~ 1

Author(s):

O. Mauer ◽

E. Palátová

Keyword(s):

Picea Abies ◽

Norway Spruce ◽

Natural Regeneration ◽

Fine Roots ◽

National Park ◽

Chemical Properties ◽

Weather Conditions ◽

Root Systems ◽

Lower Number ◽

Humus Horizons

The paper summarizes results from the analyses of Norway spruce (Picea abies [L.] Karst.) stands managed by the Forest Administration in Horní Mar&scaron;ov, Krkono&scaron;e National Park (KRNAP), which are affected by decline and by yellowing of the assimilatory apparatus. Forest stands included in the analyses were aged 10–80 years and originated from both artificial and natural regeneration. Analyses of root systems were combined with analyses of soil chemical properties and assimilatory organs, weather conditions and emissions. The analyses showed that affected trees had small and malformed anchoring root systems with a lower number of horizontal roots and a lower number of fine roots of lower vitality (high proportion of dead fine roots), which penetrated only through the uppermost humus horizons. Root systems of affected trees are infested by the honey fungus (Armillaria sp.), which colonizes anchor roots. Neither root nor bole rots were detected so far.

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