Funkcionalna prilagodba prirodnog pomlatka hrasta kitnjaka i obične bukve na različite stanišne prilike

Scientific paper - Original scientific paper

• Title (english): Functional adaptation of natural sessile oak and common beech saplings on different habitat conditions
• Author: Krunoslav Sever
• Author: Antonia Vukmirović https://orcid.org/0000-0002-4877-1096
• Author: Luka Hodak
• Author: Saša Bogdan https://orcid.org/0000-0002-1672-2038
• Author: Ida Katičić Bogdan
• Author: Daniel Krstonošić https://orcid.org/0000-0002-6148-9247
• Author: Tomislav Karažija
• Author: Jozo Franjić
• Author: Željko Škvorc https://orcid.org/0000-0002-2848-1454
• Author's institution: University of Zagreb; Faculty of Agriculture
• Author's institution: University of Zagreb; Faculty of Forestry and Wood Technology
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Forestry

Abstract (croatian)

Cilj ovoga rada bio je usporediti dvije mješovite sastojine (provenijencije) obične bukve i hrasta kitnjaka, iz istočne (provenijencija Slavonski Brod - SB) i sjeverozapadne (provenijencija Karlovac - KA) Hrvatske, s obzirom na klimatske i edafske prilike te raspraviti njihov utjecaj na rast i produkciju suhe tvari prirodnog pomlatka hrasta kitnjaka i obične bukve u kontekstu njegove funkcionalne prilagodbe na prethodno spomenute stanišne prilike. Glavna razlika između provenijencija s obzirom na klimatske prilike ogleda se u prosječno većoj količini oborina na području provenijencije KA. Unatoč tomu, zbog nepovoljnog rasporeda oborina za vrijeme rasta i razvoja istraživanog pomlatka u razdoblju 2016. – 2020. godine područje provenijencije KA odlikovalo se učestalijom pojavom sušnih perioda nego područje provenijencije SB. S obzirom na edafske prilike (fizikalne i kemijske značajke tla) provenijencije se nisu značajnije razlikovale. Međutim, tlo provenijencije KA odlikovalo se nešto lakšom strukturom (manje gline i više skeleta) u odnosu na tlo provenijencije SB. Razlike između provenijencija i vrsta s obzirom na cijeli niz mjerenih parametara koji opisuju rast i produkciju suhe tvari istraživanog pomlatka uključujući i njihove alometrijske odnose ispitan je pomoću dvofaktorske ANOVA-e. Dobiveni rezultati ukazuju da je pomladak iz provenijencije KA ulagao više suhe tvari u rast i razvoj korijenja s posebnim naglaskom na sitno korijenje i pri tom se dublje zakorjenjivao te razvijao deblju i nižu stabljiku nego pomladak iz provenijencije SB. To ukazuje da je pomladak iz provenjencije KA funkcionalno prilagođeniji sušem staništu. Takav rezultat mogao bi biti posljedica različito ispoljene fenotipske modifikacije (reakcije na sušu) i/ili stvarnih genetskih razlika između provenijencija, što ovom prilikom nije bilo moguće točnije razlučiti. Dobivene razlike u rastu i produkciji suhe tvari između kitnjakova i bukova pomlatka odgovaraju već otprije poznatom načinu njihove funkcionalne prilagodbe na vlažnost, odnosno suhoću staništa. To znači da se kitnjakov pomladak dublje zakorjenjivao i pri tom je više suhe tvari ulagao u rast krupnog korijenja u odnosu na bukov pomladak koji se pliće zakorjenjivao i pri tom više suhe tvari ulagao u rast sitnog korijenja.

Abstract (english)

The aim of this study was to examine the influence of climatic and edaphic conditions in two mixed stands (provenances) of common beech and sessile oak from eastern (Slavonski Brod - SB provenence) and northwestern (Karlovac - KA provenence) Croatia on the functional adaptation of growth and dry matter production of their natural saplings. The main differences between the provenances with regard to climatic conditions is reflected in the amount of precipitation. The amount of precipitation in the area of ​​KA provenance is much higher than in the area of ​​SB provenance (Table 1 and 2). In spite of, due to the unfavorable distribution of precipitation during the growth of the investigated saplings in the period 2016 – 2020, dry periods were more frequent in the KA provenance than in the SB provenance (Figure 1). Edaphic conditions (physical and chemical soil traits), did not significantly differ between the provenances. However, the soil of KA provenance was characterized by a slightly lighter structure (less clay and more skeletons) compared to the soil of SB provenance (Table 3 – 5 and Figure 2). Differences in growth and dry matter production, as well as in allometric growth relations between provenances and species were examined using two-way ANOVA. The obtained results indicate that the saplings from the KA provenance compared to the saplings from the SB provenance invested more dry matter in root growth (especially fine roots) and took root deeper. In addition, the saplings from the KA provenance developed a thicker and lower stem compared to the saplings from the SB provenance (Table 6 – 8). This indicates that the saplings from the KA provenance are functionally more adapted to the drought habitat. It could be the result of differently manifested phenotypic modification (drought response) and/or real genetic differences between provenances, which our research could not distinguish more accurately. The obtained differences in the growth and dry matter production between the sessile oak and the common beech saplings correspond to the already known patterns of their functional adaptation to the habitat humidity. It means that sessile oak saplings took deeper roots and invested more dry matter in the coarse roots compared to common beech saplings that took root more shallowly and invested more dry matter in the fine roots (Table 9).

• Keywords (croatian): Quercus petraeaL.; Fagus sylvaticaL.; suša; alometrijski odnosi rasta; suha tvar; sitno korijenje; krupno korijenje; stabljika
• Keywords (english): Quercus petraeaL.; Fagus sylvaticaL.; drought; alometric growth relations; dry matter; fine roots; coarse roots; stem
• Language: croatian
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Šumarski list
• Numbering: vol. 146, no. 7-8, pp. 293-307
• p-ISSN: 0373-1332
• e-ISSN: 1846-9140
• DOI: https://doi.org/10.31298/sl.146.7-8.2
• URN:NBN: urn:nbn:hr:204:357637
• Publication: 2022
• Document URL: https://hrcak.srce.hr/281739
• Type of resource: Text
• Access conditions: Open access
• Created on: 2024-02-07 12:08:54