Original scientific paper
https://doi.org/10.15177/seefor.16-13
Ecological, Typological Properties and Photosynthetic Activity (FAPAR) of Common Beech (Fagus sylvatica L.) Ecosystems in Croatia
Ivan Pilaš
; Croatian Forest Research Institute, Division of Ecology, Cvjetno naselje 41, HR-10450 Jastrebarsko, Croatia
Ivan Medved
; Croatian Forest Research Institute, Division of Ecology, Cvjetno naselje 41, HR-10450 Jastrebarsko, Croatia
Jasna Medak
; Croatian Forest Research Institute, Division of Ecology, Cvjetno naselje 41, HR-10450 Jastrebarsko, Croatia
Melita Perčec Tadić
; Meteorological and Hydrological Service, Grič 3, HR-10000 Zagreb, Croatia
Damir Medak
; University of Zagreb, Faculty of Geodesy, Kačićeva 26, HR-10000 Zagreb, Croatia
Abstract
Background and purpose: The purpose of this study was to assess the structural and functional properties of common beech forest ecosystems in Croatia across a wide macro-climatic gradient (Mediterranean, Alpine and Continental) and to gain insight into the ways they adapt to progressing short-term climatic extremes and anomalies.
Material and Methods: Research was undertaken by integration of the expert based, country scale typological delineation of 13 beech ecosystem types, climatic and topographic grids and indices of ecosystem performances such as the JRC FAPAR (Fraction of Absorbed Photosynthetically Active Radiation).
Results: This study reveals preferential environmental conditions for beech ecosystem types together with limiting conditions in three margins of the beech distribution area: highest altitudinal zone, south-eastern continental Pannonian zone and the Mediterranean. The results show that the common beech can adapt to a very wide range of environmental conditions: annual mean temperatures from 2.1oC to 13.5oC, annual precipitation from 739 mm to 3444 mm, and altitudinal range from 20.3 m up to 1576 m above sea level. FAPAR reveals some new insight into the adaptive potential and response mechanisms of the common beech to emerging climate change.
Conclusion: The common beech has great potential to adapt to increasing spring warming by a preterm shift of phenology onset and retain relatively stable productivity during the phenology peak in July and August, unrelated to external climatic forcing. These findings indicate that the flexibility of phenological timing, especially during springtime, present one of the important mechanisms of adaptation and resilience of the common beech.
Keywords
Common beech (Fagus sylvatica L.); JRC FAPAR; environmental limits; adaptation; resilience; climate change
Hrčak ID:
170295
URI
Publication date:
9.12.2016.
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