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Pilaš, N. Potočić: ODNOS UNUTARSEZONSK1H VARIJACIJA PRIRASTA DEBLA, ELEKTRIČNOG ... Šumarski list br. 5-6, CXXVIII (2004), 255-267 port, College of Forest Resources, Univ. Of Maine No. 28. P e r a m a k i , M., E. N i k i n m a a , S. S e v a n t o , H. I l v e s n i e m i , E . S i i v o l a , P. H a r i , T . Ves a l a , 2001: Tree stem diameter variations and transpiration in Scots pine: an analysis using a dynamic sap flow model. Tree Physiology 21: 889-897. P i e n e , H . , R. G. T h o m p s o n , J. E. M c l s a a c , i D. S. F e n s o m, 1984: Electrical resistance measurements on young balsam fir trees in relation to specific volume increment, foliar biomass, and ion content of bark and wood. Can. J. For. Res. 14:177-180. P i l a š I., B. Vrbek, Đ. K a u z l a r i ć , 2000: The Graundwater Regime - A Decisive Factor of Pedunculate Oak Stability. IUFRO OAK 2000, Poster abstracts. P i l a š , I., B. V r b e k , D. M e d a k , 2003: Application of groundwater monitoring in management of pedunculate oak forests in Croatia. 2nd Conference of Sustainable Managment of Energy, Water and Enviroment Systems, CD Proceedings, Dubrovnik. P r p i ć , B. 1996: Propadanje šuma hrasta lužnjaka, Hrast lužnjak u Hrvatskoj, 273-298, Vinkovci - Zagreb. P r p i ć , B., I. A n i ć , 2000: The influence of climate and hydro-technical developments in the stability of the peduncled oak (Quercus robur L.) stands in Croatia. Glas. šum. pokuse 37: 29-240, Zagreb. P r p i ć , B., A. V r a n k o v i ć , Đ . R a u š , S . M a t i ć , A . P r a n j i ć , i Š . M e š t r o v i ć , 1994: Utjecaj ekoloških i gospodarskih činilaca na sušenje hrasta lužnjaka u gospodarskoj jedinici Kalje Šumskog gospodarstva Sisak. Glasnik za šumske pokuse 30:361-419. S e v a n t o , S., T V e s a l a , M. P e r a m a k i , E. N i k i n m a a , 2002: Time lags for xylem and stem diameter variations in a Scots pine tree. Plant, Cell and Environment 25: 1071-1077. S e v a n t o , S., T. V e s a l a , M. P e r a m a k i , E. Nik i n m a a , 2003: Sugar transport together with environmental conditions controls time lags between xylem and stem diameter changes. Plant, Cell and Environment (u tisku). S e v a n t o , S.,T. V e s a l a , M. P e r a m a k i , J. Pump a n e n , H. I l v e s n i e m i , E. N i k i n m a a , 2001: Xylem diameter changes as an indicator of stand-level evapo-transpiration. Boreal Enviroment Research 6: 45-52. S h o r t l e , W. S., A. L. S h i g o , P. B e r r y i J. Abus a m r a , 1977: Electrical resistance in tree cambium zone: relationship to rates bof growth and wound closure. Forest Science, 23:7, str. 326-329. T a t t a r , T, A. S h i g o , i T. C h a s e , 1972: Relationship between the degree of Resistance to a pulsed electric current and wood in progressive stages of discoloration and decay in living trees. Can. J. For. Res. Vol 2: 236-243. T h o m a s , F., 1998: State of knowledge in causeeffect research on damage to oak and beech in Europe, in: Augustin, S. & H. Andreae (Ur.): Cause-effect-interrelations in forest condition, UN/ECE and EC, Geneva and Brussels, 52 pp. T o r e l l i , N. i B. K r i ž a j , 1991: Bioelektrična določitev kondicije navadne jelke {Abies alba Mill.) in prognoziranje preživetja v območjih z zračno polucijo. Biol. Vestn. 39/4, str. 49-62. T o r e l l i , N., D. R o b i č , M. Z u p a n č i č , P. O v e n , F. F e r l i n i B. K r i ž a j , 1990: Električna upornost kot kazalec zdravstvenega stanja in možnosti jelk za preživetje na območjih z zračno polucijo. Zbornik gozdarstva in lesarstva, 36, str. 17-26. V e s a l a , T, S. S e v a n t o , P. P a a t e r o , E. Nik i n m a a , M. P e r a m a k i , T. A l a - N i s s i l a , J. SUMMARY: This paper presents research regarding the mutual relationship between intra-seasonal variations of tree stem diameter changes, changes of electrical resistance of cambial zone (ERCZ) and groundwater oscillations. Two groups consisting of ten common oak fQuercus robur L.) trees were selected, one group with crown damage status above (healthy trees) and the other below 40 % (damaged trees). Research was undertaken in the Pokupsko Basin area. The site was selected in forest type of pedunculate oak and common hornbeam, the soil was gleic luvisol. The groundwater regime on the site is characteristic for the wider area of the Posavina region with high groundwater levels during the winter and spring seasons and low levels in summer and autumn with minimal groundwater levels below 5 m. 266 |