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Projects / Programmes source: ARIS

Afforestation of karstic grasslands and the changes of their carbon sink capacity

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Research activity

Code Science Field Subfield
4.03.00  Biotechnical sciences  Plant production   

Code Science Field
B310  Biomedical sciences  Physiology of vascular plants 
Keywords
kroženje ogljika, ekosistemi, travišča, zaraščanje, ponori za ogljik, CO2
Evaluation (rules)
source: COBISS
Evaluation of bibliographic research performance indicators according to ARIS methodology
Citations Citations for bibliographic records in COBIB.SI that are linked to records in citation databases
source: WoS source: Scopus source: COBISS
Researchers (14)
no. Code Name and surname Research area Role Period No. of publications
1.  02085  PhD Franc Batič  Plant production  Researcher  2008 - 2009  0 
2.  15493  PhD Matjaž Čater  Forestry, wood and paper technology  Researcher  2008 - 2011  0 
3.  24416  PhD Klemen Eler  Biology  Researcher  2008 - 2011  0 
4.  29164  PhD Mitja Ferlan  Forestry, wood and paper technology  Junior researcher  2008 - 2011  0 
5.  21242  PhD Tine Grebenc  Plant production  Researcher  2008 - 2011  0 
6.  21543  PhD Tjaša Kanduč  Geology  Researcher  2008 - 2011  0 
7.  17789  Gabrijel Leskovec    Technical associate  2008 - 2011  0 
8.  11595  PhD Tomislav Levanič  Forestry, wood and paper technology  Researcher  2008 - 2011  0 
9.  21581  PhD Irena Maček  Biology  Researcher  2008 - 2009  0 
10.  11279  PhD Nives Ogrinc  Control and care of the environment  Researcher  2008 - 2011  0 
11.  10264  PhD Primož Simončič  Forestry, wood and paper technology  Researcher  2008 - 2011  0 
12.  22592  PhD Urša Vilhar  Forestry, wood and paper technology  Researcher  2008 - 2011  0 
13.  14011  PhD Dominik Vodnik  Biology  Head  2008 - 2011  0 
14.  21137  Daniel Žlindra  Forestry, wood and paper technology  Technical associate  2008 - 2011  0 
Organisations (3)
no. Code Research organisation City Registration number No. of publications
1.  0106  Jožef Stefan Institute  Ljubljana  5051606000  18 
2.  0404  Slovenian Forestry Institute  Ljubljana  5051673000  0 
3.  0481  University of Ljubljana, Biotechnical Faculty  Ljubljana  1626914  11 
Abstract
The invasion of woody vegetation into grasslands is generally thought to lead to an increase in the amount of carbon stored in those ecosystems, which is primarily due to increase in above ground biomass. However, it is still quite unknown how much does the invasion of woody species influence the storage of carbon to the soil organic matter and how recalcitrant that pool of organic C is. In the frame of the project the net ecosystem carbon exchange and the most crucial components of the carbon cycling of the abandoned grassland in Slovenian karst region will be assessed. In this region the process of transition of grasslands to forests has been very intensive since the beginning of the 20th century. The main objectives of the research is to assess the carbon balance for different stages of grassland-forest succession (chronosequence; pasture, abandonded pasture, pasture with invasion of woody species, forest) and to evaluate the potential of the abandoned grasslands to mitigate the CO2 concentration in the atmosphere.
Significance for science
The effects of woody plants encoachemnt into grasslands or the effects of afforestation have been addressed in several studies but the altered rates of C net-ecosystem exchange (NEE), have only rarely been investigated by direct paired eddy flux measurements. In our project we used this approach to study the effects of natural succession on carbon balance of karstic pastures. Karstic ecosystems are characterized by some properties which could limit the use of micrometeorological methods (relief with depressions and sinkholes, wind conditions). We reported on the difficulties related to the use of Eddy covariance techniqe in Ferlan et al. (2011), commenting the results of quality- and uncertanty analyses, portions of discarded data and also the necessity to use Burba correction in data processing. With this respect our project not only brings a primarily information on C fluxes for the studied ecosystems but also contributes to methodology of NEE measurements. Since karstic ecosystems are underinvestigated in terms of carbon balance the results of the project represent an important new information for scientific community. Globaly, a large portion of arid ecosystems is characterized by carbonate rocks, the mother material in Karst systems. Carbonate rocks outcrop on ca. 12% of the water-free Earth surface and therefore karstic ecosystems may play an important direct role in the global carbon cycle. However, a thorough, integrative research of carbon cycling in this systems has intensified only recently (Kowalski et al. 2008; Inglima et al., 2009; Serrano-Ortiz et al., 2009; Serrano-Ortiz et al., 2010). The results of our project, i. e. unexpectedly high CO2 emissions and disagreement of ecosystem respiration with soil respiration, support the presumption that Rs of karstic ecosystem is contributed not only by CO2 biogenessis, but also by other sources (soil CO2 of inorganic origin and CO2 from caves). Ferlan et al. 2011. Agriculture, Ecosystems and Environment, 140: 199-207. Inglima et al. 2009. Global Change Biology, 15: 1289–1301. Kowalski et al. 2008. Agricultural and Forest Meteorology 148: 1045-1054. Serrano-Ortiz et al. 2009. Journal of Geophysical Research, 114, G04015. Serrano-Ortiz et al. 2010. Agricultural and Forest Meteorology, 150: 321–329.
Significance for the country
The project on cyrbon cycling in karstic ecosystems represents the only direct measurements of NEE and other parameters of the ecosystem's C balance by micrometeorological methods (Eddy covariance) in Slovenia. The information on carbon balance in abandoned karst grasslands will contribute to the general knowledge on possible responses of ecosystems to global climate change. On the basis of this research it will be possible to prepare a strategy of future management of these ecosystems taking into account also the potential of forested grasslands in mitigating effects of climate change. The results will be important nationally (support for environmental policymakers).
Most important scientific results Annual report 2008, final report, complete report on dLib.si
Most important socioeconomically and culturally relevant results Annual report 2008, 2009, final report, complete report on dLib.si
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