Naslov
Functional adaptation of common beech and sessile oak to drought

Autori
Sever, Krunoslav ; Vukmirović, Antonia ; Bogdan, Saša ; Katičić Bogdan, Ida ; Krstonošić, Daniel ; Karažija, Tomislav ; Bačurin, Marko ; Škvorc, Željko

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of abstracts / - , 2022, 40-40

Skup
Eastern Alpine and Dinaric Society for Vegetation Ecology (EADSVE) 39th Meeting

Mjesto i datum
Dubrovnik, Hrvatska, 04.-07.05.2022

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
allometric growth, coarse root, dry mass, drought, Fagus sylvatica L., fine root, Quercus petraea (Matt.) Liebl., stem

Sažetak
This research was conducted on four-year-old saplings of common beech and sessile oak originating from two mature mixed beech-oak stands from the Republic of Croatia (RH), which are characterized by similar orographic and edaphic (chemical composition and mechanical soil structure) conditions. In addition, both stands belong to the same phytosociological association, Epimedio-Carpinetum betuli (Horvat 1938) Borhidi 1963. However, during the development of the studied saplings in the period from 2016 to 2020, stands from north-western part of the RH near Karlovac (KA) were more frequently exposed to drought periods than stands from eastern part of RH near Slavonski Brod (SB). Therefore, the aim of this study was to examine the impact of drought on the functional adaptation of growth and dry mass production of common beech and sessile oak saplings. Differences between stands (KA vs. SB) and species (beech vs. oak) were examined using two-factorial ANOVA with respect to a growth and dry mass production parameters, including their allometric relationships. According to the obtained results, the saplings from the KA stand had a thicker and lower stem, rooted deeper, and had a higher dry mass of coarse and fine roots compared to the saplings from the SB stand. This indicates that the saplings from the KA stand could be functionally more adapted to the drought habitat than the saplings from the SB stand due to more frequent exposure to drought periods. Such a result could be the consequences of different phenotypic modifications (drought reactions) and/or actual genetic differences between the studied stands, which could not be more accurately distinguished on this occasion. Furthermore, sessile oak saplings rooted deeper and had a higher dry mass of coarse roots than the common beech saplings that rooted shallower and had a higher dry mass of fine roots. This result corresponds to the previous knowledge on pattern of functional adaptation of sessile oak and common beech to moisture and/or dryness of the habitat, which differs in that sessile oak is oriented to absorb water from deeper soil layers by taproot, while common beech is oriented to absorb precipitation water from shallower layers of soil by fine roots.

Izvorni jezik
Engleski

Znanstvena područja
Šumarstvo

POVEZANOST RADA