PhD Sonja Lojen

PhD Sonja Lojen
no.: 10807 source: ARIS

researcher – active in research organisation
  • English
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  • Writing: Fluent
  • Speaking: Fluent
  • German
  • Reading: Fluent
  • Writing: Fluent
  • Speaking: Fluent
  • Serbo-Croatian (Roman)
  • Reading: Fluent
  • Writing: Functional
  • Speaking: Fluent
  • French
  • Reading: Basic
  • Writing: Basic
  • Speaking: Basic
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Research activity

Code Science Field Subfield
1.06.04  Natural sciences and mathematics  Geology  Geochemistry 
Keywords
Stable isotopes, environment, pollution, biogeochemical cycles, Karst system
Bibliography Representative bibliographic units | Personal | COBISS+
source: COBISS
source: SICRIS
Evaluation (metodology)
Evaluation of bibliographic research performance indicators according to ARIS methodology
source: COBISS
source: ARIS
Points
346.7
A''
32.17
A'
255.52
A1/2
303.19
CI10
1,357
CImax
224
h10
20
A1
1.31
A3
0.06
Data for the last 5 years (citations for the last 10 years) on October 15, 2025; Data for score A3 calculation refer to period 2020-2024 (2019, 2020, 2021, 2022, 2023)
Data for ARIS tenders ( 23.05.2022 – Target research programmes, archive )
Citations Citations for bibliographic records in COBIB.SI that are linked to records in citation databases
source: WoS source: Scopus source: COBISS
Database Linked records Citations Pure citations Average pure citations
WoS 82  1,871  1,674  20.41 
Scopus 92  2,231  1,990  21.63 
Mentoring junior researchers
source: ARIS
no. Name and surname Type Period Code
1 PhD Saša Zavadlav   Uniform doctoral studies  10/1/2008 - 6/20/2013  30892 
2 PhD Martina Burnik Šturm   Uniform doctoral studies  11/1/2006 - 5/31/2011  28487 
3 PhD Tjaša Kanduč   Doctoral degree  11/1/2000 - 4/30/2006  21543 
Education
source: ARIS
Level of education Professional title Study subject Faculty Year
    Geology  SI 1988 
Master's degree  M. Sc.     SI 1992 
Doctoral degree  Ph. D.   Geology  SI University of Ljubljana, Faculty of Natural Sciences and Engineering 1996 
Doctoral dissertations and other final papers Show
Obtaining results now
source: COBISS
Employments
source: ARIS
Type of employment Research org. Research group Date of employment Position Role Title
Full time employment (100%, RD:100%)  Jožef Stefan Institute  Department of Environmental Sciences  1/1/1993  Research counsellor  Researcher   
Research projects Legend
source: ARIS
no. Code Title Period Head
1. J1-60008  DISCOVER - Drava Isotopes: Comprehensive Overview of Various Environmental Contaminants and Risks using Advanced Analytical Techniques   5/1/2025 - 4/30/2028  PhD Tea Zuliani   3,371 
2. N1-0359  Ocean Alkalinity Enhancement as a Strategic Lever for Ocean Change Mitigation Strategies   1/1/2024 - 12/31/2026  PhD Nina Bednaršek   3,592 
3. N1-0309  Validation of catchment-scale contaminant transport models using stable isotopes and multi-element measurements   1/1/2023 - 12/31/2026  PhD Radmila Milačič Ščančar   2,812 
4. J6-50213  Denuded caves of the Nullarbor Plain   10/1/2023 - 9/30/2026  PhD Matej Lipar   3,537 
5. L7-50097  Hydro-ecologically based operation of run-of-river reservoirs for effective sediment management and energy production   10/1/2023 - 9/30/2026  PhD Mateja Klun   8,887 
6. J6-50214  Supporting Holocene Climate Reconstruction with High-Resolution Cryospheric Proxies from the Karst Ice Caves of Slovenia   10/1/2023 - 9/30/2026  PhD Jure Tičar   4,998 
7. V1-2319  The presence of mercury in drinking water in the area of ​​the Municipality of Idrija   10/1/2023 - 9/30/2025  PhD Jože Kotnik   4,359 
8. J6-3141  Subglacial carbonate deposits - a new source for studying the presence of glaciers in a glaciokarstic environment   10/1/2021 - 9/30/2025  PhD Matija Zorn   6,925 
9. J1-2478  Novel proxies of the Holocene climate variability in stalagmites in Slovenia   9/1/2020 - 8/31/2024  PhD Sonja Lojen   5,464 
10. N1-0164  Molybdenum geobiochemical cycle in rocks and sediments   10/1/2020 - 9/30/2023  PhD Nastja Rogan Šmuc   2,701 
11. J1-1712  Record of environmental change and human impact in Holocene sediments, Gulf of Trieste   7/1/2019 - 6/30/2023  PhD Matej Dolenec   5,783 
12. J1-9179  Non-traditional isotopes as identifiers of authigenic carbonates   7/1/2018 - 6/30/2021  PhD Sonja Lojen   4,923 
13. J4-8216  Mortaliteta v nižinskih hrastovih sestojih Panonske nižine - posledica zniževanja podtalnice ali klimatskih sprememb? (Slovene)   5/1/2017 - 4/30/2020  PhD Tomislav Levanič   4,219 
14. N1-0054  Spatial distribution of water isotopes in precipitation in Europe with special focus on the transect from the Adriatic Coast to the Pannonian Plain   6/1/2016 - 5/31/2019  PhD Polona Vreča   2,102 
15. J4-7640  Electrostatic immobilisation of bacterial cells and effects on their physiology   3/1/2016 - 2/28/2019  PhD Aleš Lapanje   7,494 
16. J2-7322  Modellinghydrologicresponseofnonhomogeneouscatchments   1/1/2016 - 12/31/2018  PhD Mitja Brilly   6,203 
17. J7-6857  Vegetation and hydrology of Ljubljansko barje in the past, present and future - a consequence of succession, human impact or climatic fluctuations?   1/1/2014 - 6/30/2017  PhD Maja Andrič   5,298 
18. L1-5451  Ocena možnosti geološkega zajemanja CO2 v nizko zrelih premogih: Velenjski bazen, Slovenija kot naravni analog (Slovene)   8/1/2013 - 7/31/2016  PhD Tjaša Kanduč   4,721 
19. V4-1108  The use of speciific methods for determination and prevention of adulteration of milk and dairy products   10/1/2011 - 9/30/2014  PhD Nives Ogrinc   3,740 
20. L1-4280  Datacija podzemnih vod v globokih vodonosnikih Slovenije (Slovene)   7/1/2011 - 6/30/2014  PhD Janko Urbanc   6,132 
21. L2-4066  Petrologija rjavih premogov, ki jih pridobivamo in/ali uporabljamo v Sloveniji, plini v njih in njihove plinsko-sorpcijske lastnosti (Slovene)   7/1/2011 - 6/30/2014  PhD Miloš Markič   3,911 
22. J4-4224  TRAJNOSTNA RABA TAL V POVEZAVI S KAKOVOSTJO PRIDELKOV (Slovene)   7/1/2011 - 6/30/2014  PhD Franc Batič   11,739 
23. V4-1058  Možnosti kmetovanja na vodovarstvenih območjih (Slovene)   10/1/2010 - 9/30/2013  PhD Janko Urbanc   5,590 
24. L2-2211  Optimiranje remediacije odlagališča materiala onesnaženega s polikloriranimi bifenili (PCB) (Slovene)   5/1/2009 - 4/30/2012  PhD Andrej Stergaršek   3,816 
25. V4-0490  Usoda in speciacija onesnažil pri predelavi onesnažene biomase v sintetično gorivo in čisti vodik (Slovene)   9/1/2008 - 8/31/2011  PhD Andrej Stergaršek   5,572 
26. L1-0437  Natural hydrochemical background and dynamics of groundwater in Slovenia   2/1/2008 - 1/30/2011  PhD Janko Urbanc   5,190 
27. J1-9498  Fiksacija CO2 v rečnih karbonatih: masna bilanca, hidrološki, geokemijski in biokemijski vplivi (Slovene)   7/1/2007 - 6/30/2010  PhD Sonja Lojen   4,682 
28. V4-0316  Določanje geografskega in botaničnega porekla medu (Slovene)   10/1/2006 - 9/30/2008  PhD Marijan Nečemer   2,505 
29. L1-7097  Nitrate migration in a plant-soil-groundwater system   9/1/2005 - 8/31/2008  PhD Janko Urbanc   7,191 
30. J4-7315  The response of soil organic matter and natural ecosystems (primarily forests) to climate change   9/1/2005 - 8/31/2008  PhD Nataša Jaecks Vidic   3,573 
31. M1-0157  Določitev vpliva vojaškega poligona Krivolak na okolje z namenom njegove ekološke sanacije (Slovene)   6/1/2006 - 11/30/2007  PhD Boštjan Pokorny   17,697 
32. L2-6458  Development of tools for management and analysis of the loads and influences on waters in the Sava and Soča catchments   2/1/2004 - 1/30/2007  PhD Matjaž Mikoš   11,231 
33. V4-0114  Določevanje izvora sladkorjev vin s kombinacijo SNIF-NMR, IRMS in kemometričnimi metodami - nadaljevanje projekta iz leta 2001 'Konkurenčnost Slovenije 2001-2006' (Slovene)   9/1/2004 - 11/30/2006  PhD Mitja Kocjančič   4,035 
34. V4-0479  Določevanje izvora sladkorjev vin s kombinacijo SNIF-NMR, IRMS in kemometričnimi metodami (Slovene)   11/1/2001 - 10/31/2003  PhD Mitja Kocjančič   5,700 
35. V4-0299  Določevanje izvora sladkorjev v vinih s kombinacijo SNIF-NMR,IRMS in kemometričnimi metodami (Slovene)   11/1/1999 - 10/31/2001  PhD Mitja Kocjančič   5,062 
36. J2-1433  Mehanizmi nastajanja, prenosa in kopičenja plinov v premogovnih slojih (Slovene)   1/1/1999 - 6/30/2001  PhD Jožef Pezdič   7,000 
37. J1-1300  Organski polutanti v bioloških virih slovenskega morja (Slovene)   1/1/1999 - 6/30/2001  PhD Hermina Leskovšek Šefman   5,871 
38. L3-1294  The effects of the continuous method on endurance performance   1/1/1999 - 6/30/2001  PhD Anton Ušaj   1,169 
39. J1-0695  Geokemija supergenih procesov v Sloveniji (Slovene)   7/1/1998 - 6/30/2001  PhD Simon Pirc   6,560 
40. T1-0695  Geokemija supergenih procesov v Sloveniji (Slovene)   7/1/1998 - 6/30/2001  PhD Simon Pirc   5,313 
41. J1-0865  Lichens as integrating air pollution monitors   7/1/1998 - 6/30/2001  PhD Zvonka Jeran   2,714 
42. J1-7414  Slovenska alpska jezera: paleoekologija in ekologija (slo-al: pe) - procesi eutrofizacije v visokogorskih jezerih (Slovene)   1/1/1996 - 6/30/2001  PhD Anton Brancelj   7,849 
43. L1-9102  Health aspects of soca river pollution in the solkan he power plant reservoir   1/1/1997 - 12/31/1999  PhD Mladen Franko   2,103 
44. V4-9119  Primerjava metod pri določanju izotopske sestave vin - ugotavljanje izvora sladkorjev v vinih z uporabo SNIF-NMR in stabilnih izotopov (Slovene)   10/1/1997 - 9/30/1999  PhD Mitja Kocjančič   3,335 
45. V2-8575  Razvoj sistema za obvladovanje ogroženosti podtalnice zaradi točkovnih in razpršilnih industrijskih in urbanih ter kmetijskih izvorov o (Slovene)   1/1/1996 - 8/31/1998  PhD Miran Veselič   3,913 
46. J1-7263  Geokemija supergene cone v Sloveniji (Slovene)   1/1/1995 - 6/30/1998  PhD Jožef Pezdič   3,823 
ARIS research and infrastructure programmes Legend
source: ARIS
no. Code Title Period Head
1. P1-0143  Cycling of substances in the environment, mass balances, modelling of environmental processes and risk assessment   1/1/2020 - 12/31/2027 PhD Milena Horvat   11,349 
2. P1-0143  Cycling of substances in the environment, mass balances, modelling of environmental processes and risk assessment   1/1/2015 - 12/31/2019 PhD Milena Horvat   10,819 
3. P1-0143  Cycling of substances in the environment, mass balances, modelling of environmental processes and risk assessment   1/1/2009 - 12/31/2014 PhD Milena Horvat   10,986 
4. P1-0143  Cycling of substances in the environment, mass balances, modelling of environmental processes and risk assessment   1/1/2004 - 12/31/2008 PhD Milena Horvat   10,979 
5. P0-0531-0106  Biological and geochemical cycles   1/1/1999 - 12/31/2003 PhD Milena Horvat   4,977 
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