Loading...
Projects / Programmes source: ARIS

The agreement and synchrony between woody carbon sequestration and eddy covariance estimates of net ecosystem productivity in a heterogeneous open woodland ecosystem

Research activity

Code Science Field Subfield
4.01.00  Biotechnical sciences  Forestry, wood and paper technology   

Code Science Field
B430  Biomedical sciences  Sylviculture, forestry, forestry technology 

Code Science Field
4.01  Agricultural and Veterinary Sciences  Agriculture, Forestry and Fisheries 
Keywords
Karst, woody carbon sequestration, eddy covariance measurements, intra-annual tree growth, modelling
Evaluation (rules)
source: COBISS
Researchers (34)
no. Code Name and surname Research area Role Period No. of publicationsNo. of publications
1.  29875  Marko Bajc  Forestry, wood and paper technology  Technical associate  2018 - 2022  280 
2.  15493  PhD Matjaž Čater  Forestry, wood and paper technology  Researcher  2018 - 2022  301 
3.  28856  PhD Gabrielle I. Deckmyn  Forestry, wood and paper technology  Researcher  2018 - 2022  48 
4.  24416  PhD Klemen Eler  Biology  Researcher  2018 - 2022  306 
5.  29164  PhD Mitja Ferlan  Forestry, wood and paper technology  Researcher  2020 - 2022  222 
6.  21242  PhD Tine Grebenc  Plant production  Researcher  2020 - 2022  489 
7.  22609  PhD Jožica Gričar  Forestry, wood and paper technology  Head  2018 - 2022  540 
8.  29633  PhD Polona Hafner  Forestry, wood and paper technology  Researcher  2018 - 2022  159 
9.  28855  Melita Hrenko    Technical associate  2018 - 2022 
10.  19106  PhD Miha Humar  Forestry, wood and paper technology  Researcher  2018 - 2022  1,326 
11.  29831  Špela Jagodic    Technical associate  2018 
12.  39600  PhD Jernej Jevšenak  Forestry, wood and paper technology  Researcher  2020 - 2022  105 
13.  39085  PhD Janez Kermavnar  Forestry, wood and paper technology  Junior researcher  2018 - 2022  128 
14.  07127  PhD Hojka Kraigher  Forestry, wood and paper technology  Researcher  2018 - 2022  1,332 
15.  53233  PhD Luka Krajnc  Forestry, wood and paper technology  Researcher  2020 - 2022  94 
16.  17333  Robert Krajnc    Technical associate  2018 - 2022  56 
17.  37425  PhD Davor Kržišnik  Forestry, wood and paper technology  Researcher  2020 - 2022  185 
18.  12673  PhD Bojka Kump  Plant production  Researcher  2019  34 
19.  37418  PhD Martina Lavrič  Forestry, wood and paper technology  Junior researcher  2018  34 
20.  54402  David Lenarčič  Biology  Technical associate  2021 - 2022  14 
21.  28503  PhD Boštjan Lesar  Forestry, wood and paper technology  Researcher  2018 - 2022  485 
22.  17789  Gabrijel Leskovec    Technical associate  2019 
23.  11595  PhD Tomislav Levanič  Forestry, wood and paper technology  Researcher  2018 - 2022  616 
24.  37938  PhD Tijana Martinović  Forestry, wood and paper technology  Researcher  2020 - 2022  36 
25.  24268  PhD Tanja Mrak  Forestry, wood and paper technology  Researcher  2018 - 2022  128 
26.  29428  PhD Peter Prislan  Forestry, wood and paper technology  Researcher  2019 - 2022  352 
27.  53019  Gregor Skoberne    Technical associate  2019 - 2022 
28.  31877  PhD Nataša Šibanc  Forestry, wood and paper technology  Researcher  2019 - 2022  87 
29.  24777  Barbara Štupar    Technical associate  2018 - 2022  29 
30.  33176  PhD Nejc Thaler  Forestry, wood and paper technology  Researcher  2018  129 
31.  10583  PhD Boris Turk  Plant production  Researcher  2019  211 
32.  53096  Andreja Vedenik  Forestry, wood and paper technology  Technical associate  2019 - 2022 
33.  14011  PhD Dominik Vodnik  Biology  Researcher  2018 - 2022  415 
34.  28401  PhD Peter Železnik  Forestry, wood and paper technology  Researcher  2018 - 2022  188 
Organisations (2)
no. Code Research organisation City Registration number No. of publicationsNo. of publications
1.  0404  Slovenian Forestry Institute  Ljubljana  5051673000  12,014 
2.  0481  University of Ljubljana, Biotechnical Faculty  Ljubljana  1626914  66,295 
Abstract
Forest carbon production is critical to assess in relation to water limitation, especially in drought-sensitive areas where increased frequency and intensity of prolonged drought periods, fires and heat waves are expected in the upcoming years due to global carbon change. There are still several gaps in our understanding of carbon-sink behaviour of forests, with respect to extreme weather conditions. Particularly, transitional ecosystems, such as open woodlands or successional ecosystems, are poorly covered by ecosystem research. Comparison of biometric tree-growth characteristics and eddy-covariance (EC) quantifications of carbon allocation to different storage pools in forests gave conflicting results in the previous studies. Thus, the aim of the project is to evaluate the agreement and synchrony between woody carbon sequestration and EC estimates of net ecosystem productivity for the period 2008–2020 (i.e. 13 years) for and open woodland ecosystem located in the Submediterranean region in Slovenia. Three dominant tree species in the area will be selected for analyses of intra-annual growth and biomass (above- and belowground) assessments: Quercus pubescens, Pinus nigra and Fraxinus ornus. Specifically, the following objectives will be addressed: (i) inter-species variability of leaf-phenology, tree growth and anatomy in different tree parts, (ii) temporal dynamics of coarse and fine root production, and (iii) the relationships between woody biomass increment, inter- and intra-annual variability in tree-ring proxies (width, δ13C, density), EC data and climate for this period. The research will be performed on the Podgorski kras plateau (45°32’N, 13°55’E, 400–430 m a.s.l.), SW of Slovenia, in the Submediterranean region. In 2008, two EC flux-towers have been set up to study the flows of energy, carbon and water at the ecosystem level. The towers are 1 km apart, one installed on the grassland and the other one on the open woodland site with small trees and shrubs covering 40 % of the area. The project work plan is presented with an approximate timeline. In order to facilitate the work, the project shall be organized in six working groups (WG): WG1: Project management and dissemination; WG2: Intra-annual tree growth; WG3: Woody biomass and allometry; WG4: Ecophysiological measurements; WG5: Eddy covariance data; WG6: Data analysis and integration. WG1 is supporting WG connected with the management and dissemination of the project, whereas WGs 3–6 are related to the content of the project. High professional skills of collaborating researchers together with well-equipped laboratories ensure complete feasibility of the proposed project. The proposed research subject is interdisciplinary as it combines different research groups that study forest ecosystems at different spatio-temporal scales, combining both novel and well-established methodologies. Although studies comparing tree biomass / tree-growth characteristics with EC data exist, our idea is unique because, ratio between above-and belowground woody biomass and intra-annual comparison of growth of different tree species, has been less investigated, especially including bark tissues and different tree parts. We intend to use data and results obtained in the previous studies and by that maximally exploit and justify the data and funds of the previous ARRS national projects, also in the framework of Young Researcher’s programme. The results will contribute to a more comprehensive understanding of carbon sequestered in woody biomass in heterogenous woodland ecosystems. The results will be beneficial not only for fundamental understanding the important role of drought-prone environments in the global carbon cycles and predicting future carbon–climate interactions, but also for developing policies or management practices to protect similar ecosystems that would likely be more sensitive to climate change.
Significance for science
In drought-prone environments, such as (sub)Mediterranean, water shortages are expected to become a major factor limiting ecosystem productivity. As plants make up over 90 % of the living biomass stock, the carbon stored in the ligni?ed cells of trees is a crucial component in the global carbon cycle. Thus, understanding on the spatio-temporal characteristics of carbon exchange and its responses to environmental controls is beneficial, not only for fundamental understanding the important role of drought-prone environments in the global carbon cycles and predicting future carbon–climate interactions, but also for developing policies or management practices (e.g. of resources, water, biodiversity) to protect similar ecosystems that would likely be more sensitive to climate change. While research progress is reducing uncertainty in forecasting the rate of climate change and its impacts on forest systems, there are still knowledge gaps that need to be tackled.   Thus, the results will supplement our knowledge on: Radial growth patterns (i.e. xylem and phloem formation) in different tree parts of study trees species from (sub)Mediterranean area, also in relation to leaf phenology and local environmental conditions; An exact timing when and how carbon is sequestered into the wood and bark during the growing season in different tree parts of the study tree species; Physiological and morpho-anatomical adaptation of the study tree species to water scarcity in drought-prone environments; Above- and belowground woody biomass (i.e. the amount of carbon per area) in the study tree species, including long-term growth patterns and density; The tree-mycorrhizal fungi interaction in study tree species; Annual and seasonal variability of carbon ?uxes over a period of 10 years for heterogeneous karst ecosystem, also in relation to local environmental conditions; Linkage between eddy covariance(EC) carbon flux measurements and main ecosystem processes (assimilation, respiration) and ecosystem components (woody biomass, herbaceous biomass); Linkage between of biometric data, yearly net ecosystem productivity and estimates of EC in a heterogeneous open woodland ecosystem in the Submediterranean region in Slovenia; Influence of environmental factors on carbon-water fluxes.   The proposed research subject is interdisciplinary as it combines different research groups that study forest ecosystems at different spatio-temporal scales, combining both novel and well-established methodologies. We intend to use data and results obtained in the previous studies and by that maximally exploit and justify the data and funds of the previous ARRS national projects ((J4-1009, J4-7203, Z4-8217 and Young Researcher’s programme (Mitja Ferlan in Martina Lavrič)). Once published, data will be available to the interested public.
Significance for the country
In drought-prone environments, such as (sub)Mediterranean, water shortages are expected to become a major factor limiting ecosystem productivity. As plants make up over 90 % of the living biomass stock, the carbon stored in the ligni?ed cells of trees is a crucial component in the global carbon cycle. Thus, understanding on the spatio-temporal characteristics of carbon exchange and its responses to environmental controls is beneficial, not only for fundamental understanding the important role of drought-prone environments in the global carbon cycles and predicting future carbon–climate interactions, but also for developing policies or management practices (e.g. of resources, water, biodiversity) to protect similar ecosystems that would likely be more sensitive to climate change. While research progress is reducing uncertainty in forecasting the rate of climate change and its impacts on forest systems, there are still knowledge gaps that need to be tackled.   Thus, the results will supplement our knowledge on: Radial growth patterns (i.e. xylem and phloem formation) in different tree parts of study trees species from (sub)Mediterranean area, also in relation to leaf phenology and local environmental conditions; An exact timing when and how carbon is sequestered into the wood and bark during the growing season in different tree parts of the study tree species; Physiological and morpho-anatomical adaptation of the study tree species to water scarcity in drought-prone environments; Above- and belowground woody biomass (i.e. the amount of carbon per area) in the study tree species, including long-term growth patterns and density; The tree-mycorrhizal fungi interaction in study tree species; Annual and seasonal variability of carbon ?uxes over a period of 10 years for heterogeneous karst ecosystem, also in relation to local environmental conditions; Linkage between eddy covariance(EC) carbon flux measurements and main ecosystem processes (assimilation, respiration) and ecosystem components (woody biomass, herbaceous biomass); Linkage between of biometric data, yearly net ecosystem productivity and estimates of EC in a heterogeneous open woodland ecosystem in the Submediterranean region in Slovenia; Influence of environmental factors on carbon-water fluxes.   The proposed research subject is interdisciplinary as it combines different research groups that study forest ecosystems at different spatio-temporal scales, combining both novel and well-established methodologies. We intend to use data and results obtained in the previous studies and by that maximally exploit and justify the data and funds of the previous ARRS national projects ((J4-1009, J4-7203, Z4-8217 and Young Researcher’s programme (Mitja Ferlan in Martina Lavrič)). Once published, data will be available to the interested public.
Most important scientific results Interim report
Most important socioeconomically and culturally relevant results Interim report
Views history
Favourite