Jan Hjort

7.2k total citations · 3 hit papers
105 papers, 4.5k citations indexed

About

Jan Hjort is a scholar working on Atmospheric Science, Ecology and Geology. According to data from OpenAlex, Jan Hjort has authored 105 papers receiving a total of 4.5k indexed citations (citations by other indexed papers that have themselves been cited), including 45 papers in Atmospheric Science, 29 papers in Ecology and 26 papers in Geology. Recurrent topics in Jan Hjort's work include Cryospheric studies and observations (32 papers), Climate change and permafrost (31 papers) and Geotourism and Geoheritage Conservation (25 papers). Jan Hjort is often cited by papers focused on Cryospheric studies and observations (32 papers), Climate change and permafrost (31 papers) and Geotourism and Geoheritage Conservation (25 papers). Jan Hjort collaborates with scholars based in Finland, Norway and United States. Jan Hjort's co-authors include Miska Luoto, Olli Karjalainen, Juha Aalto, Janne Alahuhta, Bernd Etzelmüller, Jani Heino, Helena Tukiainen, Sebastian Westermann, Terhi Ala‐Hulkko and Frederick E. Nelson and has published in prestigious journals such as Nature Communications, SHILAP Revista de lepidopterología and PLoS ONE.

In The Last Decade

Jan Hjort

101 papers receiving 4.4k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Degrading permafrost puts Arctic infrastructure at risk by mid-century

2018 394 citations Jan Hjort, Olli Karjalainen et al. profile →
Impacts of permafrost degradation on infrastructure

2022 328 citations Jan Hjort, Miska Luoto et al. profile →
New high-resolution estimates of the permafrost thermal state and hydrothermal conditions over the Northern Hemisphere

2022 135 citations Youhua Ran, Xin Li et al. profile →

Peers

Countries citing papers authored by Jan Hjort

Since Specialization

Citations

This map shows the geographic impact of Jan Hjort's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Jan Hjort with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Jan Hjort more than expected).

Fields of papers citing papers by Jan Hjort

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Jan Hjort. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Jan Hjort. The network helps show where Jan Hjort may publish in the future.

Co-authorship network of co-authors of Jan Hjort

This figure shows the co-authorship network connecting the top 25 collaborators of Jan Hjort. A scholar is included among the top collaborators of Jan Hjort based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Jan Hjort. Jan Hjort is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Negative effects of climate warming on red-listed boreal peatland plant species can be mitigated through restoration 2025 ·Biological Conservation ·(unknown), (unknown), Merja Elo, (unknown), Hannu Marttila, Juha Aalto, Jan Hjort, Anne Tolvanen, Parvez Rana, Aleksi Räsänen	0
2	The morpho-ecological state of palsa mires in sub-arctic Fennoscandia: insights from high-resolution spatial modelling 2025 ·CATENA ·(unknown), Olli Karjalainen, Juha Aalto, (unknown), Miska Luoto, Jan Hjort	0
3	The effects of land use on fine-scale geodiversity: Ski resorts as an example 2025 ·The Science of The Total Environment ·(unknown), (unknown), Helena Tukiainen, Alix Varnajot, Janne Alahuhta, (unknown), Jan Hjort, Tuija Maliniemi	0
4	Residential greenness during pregnancy and early life and development of asthma up to 27 years of age: The Espoo Cohort Study 2024 ·Environmental Research ·Aino K. Rantala, Inês Paciência, Harri Antikainen, Jan Hjort, Timo T. Hugg, Maritta S. Jaakkola, Jouni J. K. Jaakkola	7
5	Too much diversity—Multiple definitions of geodiversity hinder its potential in biodiversity research 2024 ·Diversity and Distributions ·Tuija Maliniemi, Helena Tukiainen, Jan Hjort, Maija Toivanen, (unknown), Joseph J. Bailey, (unknown), (unknown), José Brilha, Richard Field, Nathan Fox, Murray Gray, John‐Arvid Grytnes, (unknown), Julia Kemppinen, Paulo Pereira, (unknown), Franziska Schrodt, (unknown), Janne Alahuhta	8
6	Spatial water table level modelling with multi-sensor unmanned aerial vehicle data in boreal aapa mires 2023 ·Remote Sensing Applications Society and Environment ·(unknown), (unknown), Hannu Marttila, Jan Hjort, Timo Kumpula, (unknown), Aleksi Räsänen	8
7	Boundary of ecosystem services: A response to 2023 ·Journal of Environmental Management ·Murray Gray, Nathan Fox, John E. Gordon, José Brilha, (unknown), Maria da Glória Motta Garcia, Jan Hjort, Lucie Kubalíková, A.C. Seijmonsbergen, Ján Urban	14
8	Active Layer Thickness and Permafrost Area Projections for the 21st Century 2023 ·Earth s Future ·Xiaoqing Peng, Tingjun Zhang, Oliver W. Frauenfeld, Cuicui Mu, Kang Wang, Xiaodong Wu, Donglin Guo, Jing Luo, Jan Hjort, Juha Aalto, Olli Karjalainen, Miska Luoto	28
9	Assessing the relation between geodiversity and species richness in mountain heaths and tundra landscapes 2023 ·Landscape Ecology ·(unknown), Helena Tukiainen, Janne Alahuhta, Jan Hjort, (unknown), John‐Arvid Grytnes, (unknown), Jutta Kapfer, Risto Virtanen, Tuija Maliniemi	16
10	Geomorphological processes shape plant community traits in the Arctic 2022 ·Global Ecology and Biogeography ·Julia Kemppinen, Pekka Niittynen, Konsta Happonen, Peter C. le Roux, Juha Aalto, Jan Hjort, Tuija Maliniemi, Olli Karjalainen, (unknown), Miska Luoto	9
11	Environmental Controls of InSAR‐Based Periglacial Ground Dynamics in a Sub‐Arctic Landscape 2021 ·Journal of Geophysical Research Earth Surface ·Line Rouyet, Olli Karjalainen, Pekka Niittynen, Juha Aalto, Miska Luoto, Tom Rune Lauknes, Yngvar Larsen, Jan Hjort	17
12	New high-resolution estimates of the permafrost thermal state andhydrothermal conditions over the Northern Hemisphere 2021 ·University of Oulu Repository (University of Oulu) ·Youhua Ran, Xin Li, Guodong Cheng, (unknown), Juha Aalto, Olli Karjalainen, Jan Hjort, Miska Luoto, Huijun Jin, Jaroslav Obu, Masahiro Hori, Qihao Yu, Xiaoli Chang	11
13	Changes in the functional features of macrophyte communities and driving factors across a 70-year period 2020 ·Hydrobiologia ·Marja Lindholm, Janne Alahuhta, Jani Heino, Jan Hjort, Heikki Toivonen	24
14	Different species trait groups of stream diatoms show divergent responses to spatial and environmental factors in a subarctic drainage basin 2018 ·Hydrobiologia ·Marja Lindholm, Mira Grönroos, Jan Hjort, Satu Maaria Karjalainen, (unknown), Jani Heino	25
15	Local environment and space drive multiple facets of stream macroinvertebrate beta diversity 2018 ·Journal of Biogeography ·Mariana Perez Rocha, Luis Maurício Bini, Sami Domisch, Kimmo Tolonen, Jenny Jyrkänkallio‐Mikkola, Janne Soininen, Jan Hjort, Jani Heino	92
16	Modelling native and alien vascular plant species richness: At which scales is geodiversity most relevant? 2017 ·Global Ecology and Biogeography ·Joseph J. Bailey, Doreen S. Boyd, Jan Hjort, (unknown), Richard Field	85
17	Contribution of geodiversity, climate and spatial variables for biodiversity across a gradient of human influence 2016 ·EGUGA ·Helena Tukiainen, Janne Alahuhta, Terhi Ala‐Hulkko, Richard Field, Raino Lampinen, Jan Hjort	2
18	Land use impacts on trace metal concentrations of suburban stream sediments in the Helsinki region, Finland 2013 ·The Science of The Total Environment ·(unknown), Jan Hjort	42
19	Recent vegetation changes at the high‐latitude tree line ecotone are controlled by geomorphological disturbance, productivity and diversity 2010 ·Global Ecology and Biogeography ·Risto Virtanen, Miska Luoto, Teppo Rämä, Kari Mikkola, Jan Hjort, John‐Arvid Grytnes, H. J. B. Birks	137
20	Modelling patterned ground distribution in finnish lapland: an integration of topographical, ground and remote sensing information 2006 ·Geografiska Annaler Series A Physical Geography ·Jan Hjort, Miska Luoto	37

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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