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001-es BibID:	BIBFORM069621
Első szerző:	Misik Tamás (biológus, ökológus)
Cím:	Understory development in an oak forest in Northern-Hungary: the subcanopy layer / Tamás Misik, Imre Kárász, Béla Tóthmérész
Dátum:	2014
ISSN:	1787-064X
Megjegyzések:	Structural changes in the shrub layer were analysed in a Hungarian oak forest after the oak decline pandemics. This paper focuses on the following questions: (1) which of the woody species tolerated better the forest conditions after oak decline? (2) What are the ecological factors that explain the successful response of woody species to changes in light and thermal conditions? In the monitoring plot, the structural condition of specimens only above 8.0 m was observed. After the appearance of oak decline some Acer campestre, Cornus mas and Acer tataricum specimens appeared that reached between 8.0-13.0 m in height. Significant differences were revealed between top canopy density and foliage cover of the subcanopy and between top canopy density and mean cover of field maple. The findings of the study indicate that the forest responded to oak decline with significant structural rearrangement in the shrub layer and that three woody species compensated for the remarkable foliage loss in the top canopy. These species formed a second crown layer directly below the canopy formed by oaks.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény hazai lapban shrub community woody species Acer campestre L. cover dead oaks
Megjelenés:	Acta Silvatica et Lignaria Hungarica 10 : 1 (2014), p. 9-21. -
További szerzők:	Kárász Imre (1949-) (biológia-kémia szakos tanár) Tóthmérész Béla (1960-) (ökológus)
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001-es BibID:	BIBFORM056999
Első szerző:	Veres Zsuzsa (környezetkutató)
Cím:	Dehydrogenase Activity in a Litter Manipulation Experiment in Temperate Forest Soil / Zsuzsa Veres, Zsolt Kotroczó, Kornél Magyaros, János Attila Tóth, Béla Tóthmérész
Dátum:	2013
ISSN:	1786-691X 1787-064X
Megjegyzések:	Soil enzyme activities are "sensors" of soil organic matter (SOM) decomposition sincethey integrate information about microbial status and physico-chemical condition of soils. Wemeasured dehydrogenase enzyme activity in a deciduous temperate oak forest in Hungary under littermanipulation treatments. The Síkfőkút Detritus Input and Removal Treatments (DIRT) Projectincludes treatments with doubling of leaf litter and woody debris inputs as well as removal of leaflitter and trenching to prevent root inputs. We hypothesized that increased detrital inputs increaselabile carbon substrates to soils and would increase enzyme activities particularly that ofdehydrogenase, which has been used as an indicator of soil microbial activity. We also hypothesizedthat enzyme activities would decrease with detritus removal plots and decrease labile carbon inputs tosoil. After ten years of treatments, litter removal had a stronger effect on soil dehydrogenase activitythan did litter additions. These results showed that in this forest ecosystem the changed litterproduction affected soil microbial activity: reduced litter production decreased the soil dehydrogenaseactivity; increased litter production had no significant effect on the enzyme activity.
Tárgyszavak:	Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény hazai lapban
Megjelenés:	Acta Silvatica et Lignaria Hungarica. - 9 : 1 (2013), p. 25-33. -
További szerzők:	Kotroczó Zsolt (1975-) (biológus, ökológus) Magyaros Kornél Tóth János Attila (1945-) (ökológus) Tóthmérész Béla (1960-) (ökológus)
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