Kaj Sand-Jensen

Professor

Freshwater Biology
Universitetsparken 4
2100 København Ø
- ksandjensen@bio.ku.dk
- https://www1.bio.ku.dk/english/research/fbs/
- http://www.bio.ku.dk
Phone: +4535330124

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2020
Published
Vandplanternes artsrigdom og udbredelse i nye søer
Båstrup-Spohr, Lars, Sø, Jonas Stage, Martinsen, Kenneth Thorø, Zak, N. B., Kristensen, E., Kragh, T., Søndergaard, M., Borum, Jens & Sand-Jensen, Kaj, 2020, In: Vand & Jord. 27, 4, p. 151-155 5 p.
Research output: Contribution to journal › Journal article › Communication
Published
Vidunderlig natur omkring Hobro for 150 år siden
Schou, J. C. & Sand-Jensen, Kaj, 2020, In: URT. 44, 3, p. 8-15
Research output: Contribution to journal › Journal article › Communication
Published
Våde lavbundsjorde rummer masser af muligheder
Sand-Jensen, Kaj, 2020, In: Aktuel Naturvidenskab. 2, p. 23-25 3 p.
Research output: Contribution to journal › Journal article › Communication
2019
Published
Da heden forsvandt
Sand-Jensen, Kaj & Schou, J. C., 4 Dec 2019, In: Herning Folkeblad.
Research output: Contribution to journal › Contribution to newspaper - Newspaper article › Communication
Published
Gamle postkort fra Bramslev Bakker gjorde dybt indtryk: Forfatterduo har sammenlignet nyere og meget gamle postkort og skrevet bog om blandt andet store forandringer i Bramslev Bakker
Sand-Jensen, Kaj & Schou, J. C., 26 Nov 2019, In: Hobro Avis. p. 8
Research output: Contribution to journal › Contribution to newspaper - Comment/debate › Communication
Published
Vildmoserne, der næsten forsvandt
Sand-Jensen, Kaj & Schou, J. C., 25 Nov 2019, In: Nordjyske Stiftstidende. p. 4-5
Research output: Contribution to journal › Contribution to newspaper - Newspaper article › Communication
Published
Så forandret - Danmarks natur gennem 200 år
Sand-Jensen, Kaj & Schou, J. C., 18 Nov 2019, In: Frederiksborg Amts Avis. p. 9
Research output: Contribution to journal › Contribution to newspaper - Newspaper article › Communication
Published
Vandplanternes særlige fotosyntese afgør, hvor de vokser ude i verden
Sand-Jensen, Kaj, Iversen, Lars Lønsmann, Båstrup-Spohr, Lars & Pedersen, Ole, 15 Nov 2019, Videnskab.dk, ForskerZonen.
Research output: Other contribution › Net publication - Internet publication › Communication
Published
Carbon dioxide fluxes of air-exposed sediments and desiccating ponds
Martinsen, Kenneth Thorø, Kragh, T. & Sand-Jensen, Kaj, 2019, In: Biogeochemistry. 144, 2, p. 165-180
Research output: Contribution to journal › Journal article › Research › peer-review
Published
Catchment properties and the photosynthetic trait composition of freshwater plant communities
Iversen, L. L., Winkel, A., Baastrup-Spohr, L., Hinke, A. B., Alahuhta, J., Baattrup-Pedersen, A., Birk, S., Brodersen, P., Chambers, P. A., Ecke, F., Feldmann, T., Gebler, D., Heino, J., Jespersen, T. S., Moe, S. J., Riis, T., Sass, L., Vestergaard, O., Maberly, S. C., Sand-jensen, K. & 1 others, Pedersen, Ole, 2019, In: Science. 366, 6467, p. 878-881 4 p.
Research output: Contribution to journal › Journal article › Research › peer-review
Published
Floristik versus økologi: da floristikeren Johan Lange satte økologen Eugen Warming grundit på plads
Sand-Jensen, Kaj & Schou, J. C., 2019, In: URT. 43, 2, p. 26-27
Research output: Contribution to journal › Journal article › Communication
Published
Inorganic carbon promotes photosynthesis, growth, and maximum biomass of phytoplankton in eutrophic water bodies
Hammer, K. J., Kragh, T. & Sand-Jensen, Kaj, 2019, In: Freshwater Biology. 64, 11, p. 1956-1970 15 p.
Research output: Contribution to journal › Journal article › Research › peer-review
Published
Long-term influence of hay-cutting on plant species richness, biodiversity and soil fertility in a Danish fen
Sand-Jensen, Kaj, Jørgensen, H. & Larsen, J. R., 2019, In: Ecological Engineering. 134, p. 93-100
Research output: Contribution to journal › Journal article › Research › peer-review
Published
More is less: net gain in species richness, but biotic homogenization over 140 years
Nielsen, T. F., Sand-Jensen, Kaj, Dornelas, M. & Bruun, Hans Henrik, 2019, In: Ecology Letters. 22, 10, p. 1650-1657 8 p.
Research output: Contribution to journal › Journal article › Research › peer-review
Published
Sexual conflict and intrasexual polymorphism promote assortative mating and halt population differentiation
Iversen, Lars Lønsmann, Svensson, E. I., Christensen, S. T., Bergsten, J. & Sand-Jensen, Kaj, 2019, In: Proceedings of the Royal Society B: Biological Sciences. 286, 1899, 8 p., 2019.0251.
Research output: Contribution to journal › Journal article › Research › peer-review
Published
Shallow plant-dominated lakes - extreme environmental variability, carbon cycling and ecological species challenges
Sand-Jensen, Kaj, Andersen, M. R., Martinsen, Kenneth Thorø, Borum, Jens, Kristensen, E. & Kragh, T., 2019, In: Annals of Botany. 124, 3, p. 355-366
Research output: Contribution to journal › Review › Research › peer-review
Published
Star-kvaliteter
Sand-Jensen, Kaj & Schou, J. C., 2019, In: URT. 43, 2, p. 8-15
Research output: Contribution to journal › Journal article › Communication
Published
Så forandret: Danmarks natur gennem 200 år
Sand-Jensen, Kaj & Schou, J. C., 2019, BFN's Forlag. 276 p.
Research output: Book/Report › Book › Communication
Published
The carbon pump supports high primary production in a shallow lake
Andersen, M. R., Kragh, T., Martinsen, Kenneth Thorø, Kristensen, E. & Sand-Jensen, Kaj, 2019, In: Aquatic Sciences. 81, 2, p. 1-11 24.
Research output: Contribution to journal › Journal article › Research › peer-review
Published
Virkelighedstjek i forskningen
Sand-Jensen, Kaj, 2019, In: Aktuel Naturvidenskab. 1, p. 2
Research output: Contribution to journal › Comment/debate › Research
Published
Water temperature dynamics and the prevalence of daytime stratification in small temperate shallow lakes
Martinsen, Kenneth Thorø, Andersen, M. R. & Sand-Jensen, Kaj, 2019, In: Hydrobiologia. 826, 1, p. 247-262
Research output: Contribution to journal › Journal article › Research › peer-review
2018
Published
The Dangers of Being a Small, Oligotrophic and Light Demanding Freshwater Plant across a Spatial and Historical Eutrophication Gradient in Southern Scandinavia
Sand-Jensen, Kaj, Bruun, Hans Henrik, Nielsen, T. F., Christiansen, D. M., Hartvig, P., Schou, J. C. & Båstrup-Spohr, Lars, 2 Feb 2018, In: Frontiers in Plant Science. 9, 14 p., 66.
Research output: Contribution to journal › Journal article › Research › peer-review
Published
A simple and cost-efficient automated floating chamber for continuous measurements of carbon dioxide gas flux on lakes
Martinsen, Kenneth Thorø, Kragh, T. & Sand-Jensen, Kaj, 2018, In: Biogeosciences. 15, 18, p. 5565-5573
Research output: Contribution to journal › Journal article › Research › peer-review
Published
Adaptation and growth performance of four endangered amphibious freshwater species
Mørk, O., Kragh, T., Kristensen, E. & Sand-Jensen, Kaj, 2018, In: Aquatic Botany. 150, p. 16-22
Research output: Contribution to journal › Journal article › Research › peer-review
Published
Bedre og billigere teknologi til studier af klimagasser
Sand-Jensen, Kaj, Martinsen, Kenneth Thorø & Kragh, T., 2018, In: Vand & Jord. 25, 2, p. 70-73
Research output: Contribution to journal › Journal article › Communication
Published
Carbon limitation of lake productivity
Kragh, T. & Sand-Jensen, Kaj, 2018, In: Proceedings of the Royal Society B: Biological Sciences. 285, 1891, p. 1-9 1415.
Research output: Contribution to journal › Journal article › Research › peer-review
Published
Coupled UV-exposure and microbial decomposition improves measures of organic matter degradation and light models in humic lake
Madsen-Østerbye, M., Kragh, T., Pedersen, Ole & Sand-Jensen, Kaj, 2018, In: Ecological Engineering. 118, p. 191-200 10 p.
Research output: Contribution to journal › Journal article › Research › peer-review
Published
Early ecosystem responses to watershed restoration along a headwater stream
Kallenbach, E. M. F., Sand-Jensen, Kaj, Morsing, J., Martinsen, Kenneth Thorø, Kragh, T., Raulund-Rasmussen, Karsten & Båstrup-Spohr, Lars, 2018, In: Ecological Engineering. 116, p. 154-162 9 p.
Research output: Contribution to journal › Journal article › Research › peer-review
Published
Faren ved at være en lille nøjsom plante
Sand-Jensen, Kaj, Schou, J. C., Moeslund, B., Bruun, Hans Henrik & Båstrup-Spohr, Lars, 2018, In: Aktuel Naturvidenskab. 4, p. 20-25 6 p.
Research output: Contribution to journal › Journal article › Communication
Published
Five decades of dramatic changes in submerged vegetation in Lake Constance
Murphy, F., Schmieder, K., Båstrup-Spohr, Lars, Pedersen, Ole & Sand-Jensen, Kaj, 2018, In: Aquatic Botany. 144, p. 31-37 7 p.
Research output: Contribution to journal › Journal article › Research › peer-review
Published
High temperatures cause reduced growth, plant death and metabolic changes in eelgrass Zostera marina
Hammer, K. J., Borum, Jens, Hasler-Sheetal, H., Shields, E. C., Sand-Jensen, Kaj & Moore, K. A., 2018, In: Marine Ecology Progress Series. 604, p. 121-132
Research output: Contribution to journal › Journal article › Research › peer-review
Published
Historiske forandringer af Danmarks landskab og flora
Sand-Jensen, Kaj, Schou, J. C., Nielsen, T. F., Moeslund, B., Holm, P., Bruun, Hans Henrik & Båstrup-Spohr, Lars, 2018, In: URT. 42, 3, p. 8-13 6 p.
Research output: Contribution to journal › Journal article › Communication
Published
Hyppigere iltsvind i søer i et varmere klima – Et forvarsel i Filsø?
Kragh, T. & Sand-Jensen, Kaj, 2018, In: Vand & Jord. 25, 3, p. 114-118
Research output: Contribution to journal › Journal article › Communication
Published
Kalkudfældning, fotosyntese og fosforbinding hos kransnålalger i småsøer
Sand-Jensen, Kaj, Andersen, M., Kragh, T., Kristensen, E. & Martinsen, Kenneth Thorø, 2018, In: Vand & Jord. 25, 3, p. 101-104
Research output: Contribution to journal › Journal article › Communication
Published
Karaktertræk hos planter i nye danske søer: Kort review
Sand-Jensen, Kaj, Rasmussen, N. M., Sø, Jonas Stage & Båstrup-Spohr, Lars, 2018, In: Flora og Fauna. 124, 1-2, p. 44-50 7 p.
Research output: Contribution to journal › Review › Research › peer-review
Published
Kransnålalger: fascinerer og udfordrer
Sand-Jensen, Kaj, Schou, J. C., Moeslund, B. & Båstrup-Spohr, Lars, 2018, In: URT. 42, 4, p. 24-29 6 p.
Research output: Contribution to journal › Journal article › Communication
Published
Photosynthesis and calcification of charophytes
Sand-Jensen, Kaj, Jensen, R. S., Gomes, M., Kristensen, E., Martinsen, Kenneth Thorø, Kragh, T., Båstrup-Spohr, Lars & Borum, Jens, 2018, In: Aquatic Botany. 149, p. 46-51
Research output: Contribution to journal › Journal article › Research › peer-review
Published
Varm sommer med uventede konsekvenser for vandmiljøet
Sand-Jensen, Kaj, Martinsen, Kenneth Thorø & Kragh, T., 2018, In: Aktuel Naturvidenskab. 6, p. 22-26
Research output: Contribution to journal › Journal article › Communication
2017
Published
Fast phosphorus loss by sediment resuspension in a re-established shallow lake on former agricultural fields
Kragh, T., Sand-Jensen, Kaj, Petersen, K. & Kristensen, E., Nov 2017, In: Ecological Engineering. 108, Part A, p. 2-9 8 p.
Research output: Contribution to journal › Journal article › Research › peer-review
Published
Recovery of lake vegetation following reduced eutrophication and acidification
Båstrup-Spohr, Lars, Sand-Jensen, Kaj, Olesen, S. C. H. & Bruun, Hans Henrik, Nov 2017, In: Freshwater Biology. 62, 11, p. 1847-1857 11 p.
Research output: Contribution to journal › Journal article › Research › peer-review
Published
High rates and close diel coupling of primary production and ecosystem respiration in small, oligotrophic lakes
Martinsen, Kenneth Thorø, Andersen, M. R., Kragh, T. & Sand-Jensen, Kaj, Oct 2017, In: Aquatic Sciences. 79, 4, p. 995-1007 13 p.
Research output: Contribution to journal › Journal article › Research › peer-review
Published
Decade-long time delays in nutrient and plant species dynamics during eutrophication and re-oligotrophication of Lake Fure 1900–2015
Sand-Jensen, Kaj, Bruun, Hans Henrik & Båstrup-Spohr, Lars, May 2017, In: Journal of Ecology. 105, 3, p. 690-700 11 p.
Research output: Contribution to journal › Journal article › Research › peer-review
Published
Profound daily vertical stratification and mixing in a small, shallow, wind-exposed lake with submerged macrophytes
Andersen, M. R., Sand-Jensen, Kaj, Woolway, R. I. & Jones, I. D., Apr 2017, In: Aquatic Sciences. 79, 2, p. 395-406 12 p.
Research output: Contribution to journal › Journal article › Research › peer-review
Published
Time-restricted flight ability influences dispersal and colonization rates in a group of freshwater beetles
Iversen, Lars Lønsmann, Rannap, R., Briggs, L. & Sand-Jensen, Kaj, Feb 2017, In: Ecology and Evolution. 7, 3, p. 824-830 7 p.
Research output: Contribution to journal › Journal article › Research › peer-review
Published
Danmarks vandplanter
Schou, J. C., Moeslund, B., Båstrup-Spohr, Lars & Sand-Jensen, Kaj, 2017, BFN's Forlag. 560 p.
Research output: Book/Report › Book › Communication
Published
Extreme diel dissolved oxygen and carbon cycles in shallow vegetated lakes
Andersen, M. R., Kragh, T. & Sand-Jensen, Kaj, 2017, In: Proceedings of the Royal Society B: Biological Sciences. 284, 1862, 9 p., 20171427.
Research output: Contribution to journal › Journal article › Research › peer-review
Published
Filsø - artsrigdommen stiger fortsat
Sand-Jensen, Kaj, Kragh, T., Båstrup-Spohr, Lars, Holm, P., Kristensen, E., Rye Larsen, J., Schou, J. C., Aaby, B. & Moeslund, B., 2017, In: URT. 4, p. 22-27 6 p.
Research output: Contribution to journal › Journal article › Research
Published
Mit liv med bondelandets natur: beretninger fra det tabte og genvundne land
Sand-Jensen, Kaj, 2017, Gyldendal. 291 p.
Research output: Book/Report › Book › Communication
Published
Naturen i Danmark: Havet
Sand-Jensen, Kaj & Fenchel, Tom (ed.), 2017, 2 ed. Gyldendal. 516 p. (Naturen i Danmark).
Research output: Book/Report › Book › Communication
Published
Nye danske søer - design af optimal miljøtilstand og biodiversitet
Sand-Jensen, Kaj, Kragh, T., Borum, Jens, Båstrup-Spohr, Lars, Egemose, S., Jensen, H. S., Jeppesen, E., Reitzel, K. & Søndergaard, M., 2017, In: Vand & Jord. 24, 2, p. 65-69 5 p.
Research output: Contribution to journal › Journal article › Communication

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ID: 5792

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Danmarks biodiversitets fremtid: de væsentligste udfordringer og højest prioriterede virkemidler
Research output: Chapter in Book/Report/Conference proceeding › Report chapter › Research
Published
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Langtidsbelastning af miljørealistiske koncentrationer af pesticider på bundsamfund i ferskvand: stofomsætning, vækst, dødelighed og samfundsstruktur hos planter og dyr - et mikrokosmosstudium
Research output: Book/Report › Report › Research
Published
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Hvordan påvirker temperaturen den bakterielle omsætning?
Research output: Contribution to journal › Journal article › Research › peer-review
Published