Pål Brettum

1.9k total citations · 1 hit paper
27 papers, 1.5k citations indexed

About

Pål Brettum is a scholar working on Environmental Chemistry, Oceanography and Ecology. According to data from OpenAlex, Pål Brettum has authored 27 papers receiving a total of 1.5k indexed citations (citations by other indexed papers that have themselves been cited), including 21 papers in Environmental Chemistry, 14 papers in Oceanography and 14 papers in Ecology. Recurrent topics in Pål Brettum's work include Aquatic Ecosystems and Phytoplankton Dynamics (21 papers), Marine and coastal ecosystems (14 papers) and Fish Ecology and Management Studies (8 papers). Pål Brettum is often cited by papers focused on Aquatic Ecosystems and Phytoplankton Dynamics (21 papers), Marine and coastal ecosystems (14 papers) and Fish Ecology and Management Studies (8 papers). Pål Brettum collaborates with scholars based in Norway, Sweden and Finland. Pål Brettum's co-authors include Tom Andersen, Robert Ptáčník, Eva Willén, Angelo G. Solimini, Liisa Lepistö, B. Faafeng, Seppo Rekolainen, Dag O. Hessen, Timo Tamminen and Erik Jeppesen and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Ecology and Limnology and Oceanography.

In The Last Decade

Pål Brettum

27 papers receiving 1.4k citations

Hit Papers

align trajectories sort by overperformance

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.

Diversity predicts stability and resource use efficiency in natural phytoplankton communities

2008 431 citations Robert Ptáčník, Angelo G. Solimini et al. Proceedings of the National Academy of Sciences profile →

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author						Papers	Cites
Pål Brettum	931	811	676	402	143	27	1.5k
Eva Willén	745 0.8×	641 0.8×	606 0.9×	226 0.6×	139 1.0×	30	1.2k
Norbert Walz	888 1.0×	838 1.0×	493 0.7×	527 1.3×	133 0.9×	53	1.4k
Inés O’Farrell	1.1k 1.2×	776 1.0×	581 0.9×	359 0.9×	244 1.7×	58	1.5k
S. S. Kilham	811 0.9×	591 0.7×	715 1.1×	367 0.9×	114 0.8×	8	1.5k
Paula de Tezanos Pinto	833 0.9×	626 0.8×	719 1.1×	194 0.5×	127 0.9×	29	1.3k
David L. Findlay	806 0.9×	734 0.9×	541 0.8×	470 1.2×	111 0.8×	31	1.4k
Kristiina Vuorio	531 0.6×	681 0.8×	607 0.9×	260 0.6×	91 0.6×	47	1.2k
Judit Padisák	949 1.0×	548 0.7×	677 1.0×	168 0.4×	163 1.1×	48	1.2k
Rossella Barone	876 0.9×	592 0.7×	682 1.0×	168 0.4×	178 1.2×	35	1.2k
Marcel S. van den Berg	867 0.9×	851 1.0×	346 0.5×	293 0.7×	131 0.9×	24	1.4k

Countries citing papers authored by Pål Brettum

Since Specialization

Citations

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

Fields of papers citing papers by Pål Brettum

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Pål Brettum

This figure shows the co-authorship network connecting the top 25 collaborators of Pål Brettum. A scholar is included among the top collaborators of Pål Brettum 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 Pål Brettum. Pål Brettum 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

Haande, Sigrid, Ronald Semyalo, Pål Brettum, et al.. (2015). How water exchange and seasonality affect the eutrophication of Murchison Bay, Lake Victoria. Limnologica. 53. 60–73. 15 indexed citations

Kremer, Colin T., et al.. (2014). A compendium of cell and natural unit biovolumes for >1200 freshwater phytoplankton species. Ecology. 95(10). 2984–2984. 29 indexed citations

Lombardo, Paola, Marit Mjelde, Torsten Källqvist, & Pål Brettum. (2013). Seasonal and scale-dependent variability in nutrient- and allelopathy-mediated macrophyte–phytoplankton interactions. Knowledge and Management of Aquatic Ecosystems. 10–10. 21 indexed citations

Ptáčník, Robert, Tom Andersen, Pål Brettum, Liisa Lepistö, & Eva Willén. (2010). Regional species pools control community saturation in lake phytoplankton. Proceedings of the Royal Society B Biological Sciences. 277(1701). 3755–3764. 70 indexed citations

Haande, Sigrid, Thomas Rohrlack, Ronald Semyalo, et al.. (2010). Phytoplankton dynamics and cyanobacterial dominance in Murchison Bay of Lake Victoria (Uganda) in relation to environmental conditions. Limnologica. 41(1). 20–29. 65 indexed citations

Brettum, Pål, Anders G. Finstad, Arne Fjellheim, et al.. (2010). Nettverk for biologisk mangfold i ferskvann – samlerapport 2010. Atna- og Vikedalsvassdragene. BIBSYS Brage (BIBSYS (Norway)). 1 indexed citations

Lydersen, Espen, Stig Uggerhøj Andersen, Tom Andersen, et al.. (2008). Ecosystem effects of thermal manipulation of a whole lake, Lake Breisjøen, southern Norway (THERMOS project). Hydrology and earth system sciences. 12(2). 509–522. 18 indexed citations

Ptáčník, Robert, Angelo G. Solimini, Tom Andersen, et al.. (2008). Diversity predicts stability and resource use efficiency in natural phytoplankton communities. Proceedings of the National Academy of Sciences. 105(13). 5134–5138. 431 indexed citations breakdown →

Willén, Eva, Pål Brettum, Tom Andersen, et al.. (2008). Quantitative responses of lake phytoplankton to eutrophication in Northern Europe. Aquatic Ecology. 42(2). 227–236. 100 indexed citations

10.

Brettum, Pål, et al.. (2005). Pelagic response of a humic lake to three years of phosphorus addition. Canadian Journal of Fisheries and Aquatic Sciences. 62(2). 322–332. 5 indexed citations

11.

Hessen, Dag O., B. Faafeng, & Pål Brettum. (2003). Autotroph:herbivore biomass ratios; carbon deficits judged from plankton data. Hydrobiologia. 491(1-3). 167–175. 16 indexed citations

12.

Hessen, Dag O., Tom Andersen, Pål Brettum, & B. Faafeng. (2003). Phytoplankton contribution to sestonic mass and elemental ratios in lakes: Implications for zooplankton nutrition. Limnology and Oceanography. 48(3). 1289–1296. 73 indexed citations

13.

Jeppesen, Erik, Jens Peder Jensen, Claus Sixtus Jensen, et al.. (2003). The Impact of Nutrient State and Lake Depth on Top-down Control in the Pelagic Zone of Lakes: A Study of 466 Lakes from the Temperate Zone to the Arctic. Ecosystems. 6(4). 313–325. 298 indexed citations

14.

Olrik, Kirsten, Peter Blomqvist, Pål Brettum, Gertrud Cronberg, & Pertti Eloranta. (1998). Methods for quantitative assessment of phytoplankton in freshwaters. P. 1: Sampling, processing, and application in freshwater environmental monitoring programmes. 56 indexed citations

15.

Brettum, Pål. (1996). Changes in the volume and composition of phytoplankton after experimental acidification of a humic lake. Environment International. 22(5). 619–628. 14 indexed citations

16.

Моисеенко, Т. И., Tor Erik Brandrud, Pål Brettum, et al.. (1994). Pasvik River Watercourse, Barents region: Pollution Impacts and Ecological Responses Investigation in 1993. BIBSYS Brage (BIBSYS (Norway)). 3 indexed citations

17.

Brettum, Pål. (1994). Acidification of the humic Lake Skjervatjern; Effects on the volume and species composition of phytoplankton. Environment International. 20(3). 313–319. 6 indexed citations

18.

Rørslett, Bjørn & Pål Brettum. (1989). The genus Isoëtes in Scandinavia: An ecological review and perspectives. Aquatic Botany. 35(3-4). 223–261. 48 indexed citations

19.

Tangen, Karl Inge, et al.. (1978). An annotated check‐list of microalgae from Øvre Heimdalsvatn and its tributaries. Ecography. 1(2-3). 155–161. 4 indexed citations

20.

Tangen, Karl Inge, et al.. (1978). Periphytic and drifting microalgae in a tributary stream of Øvre Heimdalsvatn. Ecography. 1(2-3). 148–154. 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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