Claes Hellqvist

1.1k total citations
35 papers, 889 citations indexed

About

Claes Hellqvist is a scholar working on Ecology, Insect Science and Nature and Landscape Conservation. According to data from OpenAlex, Claes Hellqvist has authored 35 papers receiving a total of 889 indexed citations (citations by other indexed papers that have themselves been cited), including 27 papers in Ecology, 23 papers in Insect Science and 12 papers in Nature and Landscape Conservation. Recurrent topics in Claes Hellqvist's work include Forest Insect Ecology and Management (26 papers), Forest Ecology and Biodiversity Studies (13 papers) and Insect-Plant Interactions and Control (10 papers). Claes Hellqvist is often cited by papers focused on Forest Insect Ecology and Management (26 papers), Forest Ecology and Biodiversity Studies (13 papers) and Insect-Plant Interactions and Control (10 papers). Claes Hellqvist collaborates with scholars based in Sweden, Spain and India. Claes Hellqvist's co-authors include Bo Långström, Göran Nordlander, Henrik Nordenhem, Halvor Solheim, Anders Lindström, Anders Ericsson, Rolf Gref, Eva Stattin, Olle Tenow and Rafael Zas and has published in prestigious journals such as Journal of Agricultural and Food Chemistry, Forest Ecology and Management and Ecography.

In The Last Decade

Claes Hellqvist

33 papers receiving 765 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Claes Hellqvist Sweden 17 621 552 262 184 171 35 889
R. G. Mitchell United States 14 388 0.6× 276 0.5× 210 0.8× 143 0.8× 141 0.8× 42 679
T. Evan Nebeker United States 18 1.1k 1.7× 874 1.6× 265 1.0× 202 1.1× 233 1.4× 58 1.4k
C. P. Ohmart Australia 15 403 0.6× 337 0.6× 305 1.2× 167 0.9× 427 2.5× 32 798
Gregory M. Filip United States 15 464 0.7× 383 0.7× 241 0.9× 417 2.3× 144 0.8× 69 1.0k
Beat Forster Switzerland 11 366 0.6× 399 0.7× 129 0.5× 73 0.4× 269 1.6× 40 653
Roman Modlinger Czechia 13 403 0.6× 332 0.6× 131 0.5× 78 0.4× 113 0.7× 47 645
Jonathan A. Cale Canada 17 500 0.8× 405 0.7× 160 0.6× 217 1.2× 138 0.8× 38 755
Erkki Annila Finland 14 404 0.7× 325 0.6× 111 0.4× 97 0.5× 134 0.8× 39 550
Jennifer G. Klutsch Canada 16 653 1.1× 433 0.8× 171 0.7× 164 0.9× 150 0.9× 43 835
Fred M. Stephen United States 11 342 0.6× 259 0.5× 122 0.5× 105 0.6× 110 0.6× 39 503

Countries citing papers authored by Claes Hellqvist

Since Specialization
Citations

This map shows the geographic impact of Claes Hellqvist'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 Claes Hellqvist with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Claes Hellqvist more than expected).

Fields of papers citing papers by Claes Hellqvist

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Claes Hellqvist. 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 Claes Hellqvist. The network helps show where Claes Hellqvist may publish in the future.

Co-authorship network of co-authors of Claes Hellqvist

This figure shows the co-authorship network connecting the top 25 collaborators of Claes Hellqvist. A scholar is included among the top collaborators of Claes Hellqvist 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 Claes Hellqvist. Claes Hellqvist is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Nordlander, Göran, et al.. (2023). Trap catch data are poor predictors of damage caused by pine weevil (Hylobius abietis) to conifer seedlings. Forest Ecology and Management. 537. 120968–120968. 2 indexed citations
2.
Zas, Rafael, Niklas Björklund, Luís Sampedro, et al.. (2017). Genetic variation in resistance of Norway spruce seedlings to damage by the pine weevil Hylobius abietis. Tree Genetics & Genomes. 13(5). 20 indexed citations
3.
Nordlander, Göran, et al.. (2011). Regeneration of European boreal forests: Effectiveness of measures against seedling mortality caused by the pine weevil Hylobius abietis. Forest Ecology and Management. 262(12). 2354–2363. 70 indexed citations
4.
Pettersson, Marie, Astrid Kännaste, Anders Lindström, et al.. (2008). Mini-seedlings of Picea abies are less attacked by Hylobius abietis than conventional ones: Is plant chemistry the explanation?. Scandinavian Journal of Forest Research. 23(4). 299–306. 23 indexed citations
5.
Unelius, C. Rikard, et al.. (2006). Structure–Activity Relationships of Benzoic Acid Derivatives as Antifeedants for the Pine Weevil, Hylobius abietis. Journal of Chemical Ecology. 32(10). 2191–2203. 26 indexed citations
6.
Lindström, Anders, Claes Hellqvist, & Eva Stattin. (2005). Mini seedlings - a new forest regeneration system.. 59–61. 15 indexed citations
7.
Långström, Bo, et al.. (2004). Comparison of methods for estimation of needle losses in Scots pine following defoliation by Bupalus piniaria. Silva Fennica. 38(1). 4 indexed citations
8.
Lindström, Anders, et al.. (2003). Resultat från fältförsök med miniplantor 2002 samt återinventering av äldre försök.
9.
Långström, Bo, Halvor Solheim, Claes Hellqvist, & Paal Krokene. (2001). Host resistance in defoliated pine: effects of single and mass inoculations using bark beetle‐associated blue‐stain fungi. Agricultural and Forest Entomology. 3(3). 211–216. 15 indexed citations
10.
Stattin, Eva, Claes Hellqvist, & Anders Lindström. (2000). Storability and root freezing tolerance of Norway spruce (Picea abies) seedlings. Canadian Journal of Forest Research. 30(6). 964–970. 11 indexed citations
11.
Stattin, Eva, Claes Hellqvist, & Anders Lindström. (2000). Storability and root freezing tolerance of Norway spruce (<i>Picea abies</i>) seedlings. Canadian Journal of Forest Research. 30(6). 964–970. 15 indexed citations
12.
Långström, Bo & Claes Hellqvist. (1993). Induced and spontaneous attacks by pine shoot beetles on young Scots pine trees: tree mortality and beetle performance. Journal of Applied Entomology. 115(1-5). 25–36. 42 indexed citations
13.
Långström, Bo & Claes Hellqvist. (1993). Scots pine susceptibility to attack by Tomicus piniperda (L) as related to pruning date and attack density. Annales des Sciences Forestières. 50(2). 101–117. 15 indexed citations
14.
Långström, Bo, Halvor Solheim, Claes Hellqvist, & Rolf Gref. (1993). Effects of pruning young Scots pines on host vigour and susceptibility to Leptographium wingfieldii and Ophiostoma minus, two blue‐stain fungi associated with Tomicus piniperda. European Journal of Forest Pathology. 23(6-7). 400–415. 46 indexed citations
15.
Långström, Bo & Claes Hellqvist. (1992). Height growth recovery and crown development in top‐damaged Pinus sylvestris trees. Scandinavian Journal of Forest Research. 7(1-4). 237–247. 6 indexed citations
16.
Långström, Bo, Claes Hellqvist, Anders Ericsson, & Rolf Gref. (1992). Induced defence reaction in Scots pine following stem attacks by Tomicus piniperda. Ecography. 15(3). 318–327. 35 indexed citations
17.
Långström, Bo, Olle Tenow, Anders Ericsson, Claes Hellqvist, & Stig Larsson. (1990). Effects of shoot pruning on stem growth, needle biomass, and dynamics of carbohydrates and nitrogen in Scots pine as related to season and tree age. Canadian Journal of Forest Research. 20(5). 514–523. 65 indexed citations
18.
Lindström, Anders, et al.. (1986). Field Performance of a Protective Collar against Damage by Hylobius abietis. Scandinavian Journal of Forest Research. 1(1-4). 3–15. 25 indexed citations
19.
Långström, Bo & Claes Hellqvist. (1985). Pinus contorta as a potential host for Tomicus piniperda L. and T. minor (Hart.) (Col., Scolytidae) in Sweden1. Zeitschrift für Angewandte Entomologie. 99(1-5). 174–181. 27 indexed citations
20.
Långström, Bo, Claes Hellqvist, & B. Ehnström. (1984). Distribution and production of Tomicus piniperda in pine wood stacks.. 82(1). 23–35. 3 indexed citations

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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