Kaj Sand-Jensen

Research output

Research output per year 1975 1994 1997 2000 2005 2006 2008 2013 2018 2020

• 332 Journal article
• 35 Book chapter
• 20 Book
• 14 Report chapter
• 30 More
  • 9 Review
  • 4 Contribution to newspaper - Feature article
  • 3 Report
  • 3 Contribution to newspaper - Newspaper article
  • 2 Compendium/lecture notes
  • 2 Comment/debate
  • 2 Net publication - Internet publication
  • 1 Article in proceedings
  • 1 Conference abstract for conference
  • 1 Contribution to newspaper - Comment/debate
  • 1 Letter
  • 1 Other contribution

Research output per year

Research output per year

Search results

• 2020

  Carbon dioxide efflux and ecosystem metabolism of small forest lakes

  Martinsen, K. T., Kragh, T. & Sand-Jensen, K., 1 Jan 2020, In: Aquatic Sciences. 82, 17 p., 9.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Soil CO2 Efflux 100%
  • Ecosystem Metabolism 100%
  • Carbon Dioxide Efflux 100%
  • Forest Lake 100%
  • Carbon Dioxide 100%
  5 Citations (Scopus)
• 2019

  Carbon dioxide fluxes of air-exposed sediments and desiccating ponds

  Martinsen, K. T., Kragh, T. & Sand-Jensen, K., 30 Jul 2019, In: Biogeochemistry. 144, 2, p. 165-180

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Ponds 100%
  • Carbon Dioxide Flux 100%
  • Surface Water 100%
  • Carbon Dioxide 100%
  • Carbon Cycle 100%
  9 Citations (Scopus)

• 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, O., 15 Nov 2019, In: Science. 366, 6467, p. 878-881 4 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Diffusivity 100%
  • Embryophyta 100%
  • Species Composition 100%
  • Photosystem 100%
  • Plant Community 100%
  32 Citations (Scopus)

• Floristik versus økologi: da floristikeren Johan Lange satte økologen Eugen Warming grundit på plads

  Sand-Jensen, K. & Schou, J. C., 2019, In: URT. 43, 2, p. 26-27

  Research output: Contribution to journal › Journal article › Communication

• Inorganic carbon promotes photosynthesis, growth, and maximum biomass of phytoplankton in eutrophic water bodies

  Hammer, K. J., Kragh, T. & Sand-Jensen, K., 1 Nov 2019, In: Freshwater Biology. 64, 11, p. 1956-1970 15 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Dissolved Inorganic Carbon 100%
  • Phytoplankton 100%
  • Water Body 100%
  • Inorganic Carbon 100%
  • Photosynthesis 100%
  8 Citations (Scopus)

  8 Downloads (Pure)

• Long-term influence of hay-cutting on plant species richness, biodiversity and soil fertility in a Danish fen

  Sand-Jensen, K., Jørgensen, H. & Larsen, J. R., Sept 2019, In: Ecological Engineering. 134, p. 93-100

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Soil Fertility 100%
  • Poaceae 100%
  • Biodiversity 100%
  • Hay Cutting 100%
  • Tall Grasses 50%
  2 Citations (Scopus)

• More is less: net gain in species richness, but biotic homogenization over 140 years

  Nielsen, T. F., Sand-Jensen, K., Dornelas, M. & Bruun, H. H., 1 Oct 2019, In: Ecology Letters. 22, 10, p. 1650-1657 8 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Species Richness 100%
  • Net Gain 100%
  • Homogenizing 100%
  • Biodiversity 100%
  • Rare Specie 100%
  31 Citations (Scopus)

• Sexual conflict and intrasexual polymorphism promote assortative mating and halt population differentiation

  Iversen, L. L., Svensson, E. I., Christensen, S. T., Bergsten, J. & Sand-Jensen, K., 27 Mar 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

  • Evolution 100%
  • Assortative Mating 100%
  • Morphology 100%
  • Population Differentiation 100%
  • Species Differentiation 66%

• Star-kvaliteter

  Sand-Jensen, K. & Schou, J. C., 2019, In: URT. 43, 2, p. 8-15

  Research output: Contribution to journal › Journal article › Communication

• The carbon pump supports high primary production in a shallow lake

  Andersen, M. R., Kragh, T., Martinsen, K. T., Kristensen, E. & Sand-Jensen, K., 1 Apr 2019, In: Aquatic Sciences. 81, 2, p. 1-11 24.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Shallow Lakes 100%
  • Primary Production 100%
  • Dissolved Inorganic Carbon 100%
  • Inorganic Carbon 100%
  • Photosynthesis 57%
  12 Citations (Scopus)

• Vandplanternes særlige fotosyntese afgør, hvor de vokser ude i verden

  Translated title of the contribution: The special photosynthesis of aquatic plants determines their global distributionSand-Jensen, K., Iversen, L. L., Båstrup-Spohr, L. & Pedersen, O., 15 Nov 2019

  Research output: Other contribution › Net publication - Internet publication › Research

  • Photosynthesis 100%
  • Aquatic Plants 100%
  • Global Distribution 100%
  • Photosystem 100%

• Virkelighedstjek i forskningen

  Sand-Jensen, K., 2019, In: Aktuel Naturvidenskab. 1, p. 2

  Research output: Contribution to journal › Comment/debate › Research

• Water temperature dynamics and the prevalence of daytime stratification in small temperate shallow lakes

  Martinsen, K. T., Andersen, M. R. & Sand-Jensen, K., 1 Jan 2019, In: Hydrobiologia. 826, 1, p. 247-262

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Shallow Lakes 100%
  • Temperature Dynamics 100%
  • Water Temperature 100%
  • Small Lakes 66%
  • Biogeochemical Cycles 66%
  14 Citations (Scopus)
• 2018

  Adaptation and growth performance of four endangered amphibious freshwater species

  Mørk, O., Kragh, T., Kristensen, E. & Sand-Jensen, K., Nov 2018, In: Aquatic Botany. 150, p. 16-22

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Adaptation 100%
  • Growth Performance 100%
  • Freshwater Species 100%
  • Aquatica 100%
  • Relative Growth Rate 100%
  1 Citation (Scopus)

• A simple and cost-efficient automated floating chamber for continuous measurements of carbon dioxide gas flux on lakes

  Martinsen, K. T., Kragh, T. & Sand-Jensen, K., 19 Sept 2018, In: Biogeosciences. 15, 18, p. 5565-5573

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Carbon Dioxide Gas 100%
  • Floating Chamber 100%
  • Carbon Dioxide 100%
  • Empirical Model 66%
  • Air Pump 33%
  6 Citations (Scopus)

  72 Downloads (Pure)

• Bedre og billigere teknologi til studier af klimagasser

  Sand-Jensen, K., Martinsen, K. T. & Kragh, T., 2018, In: Vand & Jord. 25, 2, p. 70-73

  Research output: Contribution to journal › Journal article › Communication

• Carbon limitation of lake productivity

  Kragh, T. & Sand-Jensen, K., 21 Nov 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

  • Lake Productivity 100%
  • Dissolved Inorganic Carbon 100%
  • Carbon Limitation 100%
  • Phytoplankton Productivity 80%
  • Phytoplankton Biomass 60%
  13 Citations (Scopus)

• Coupled UV-exposure and microbial decomposition improves measures of organic matter degradation and light models in humic lake

  Madsen-Østerbye, M., Kragh, T., Pedersen, O. & Sand-Jensen, K., 2018, In: Ecological Engineering. 118, p. 191-200 10 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Groundwater 100%
  • Organic Matter Degradation 100%
  • Humic Lake 100%
  • UV Exposure 100%
  • Degradation Model 100%
  7 Citations (Scopus)

• Early ecosystem responses to watershed restoration along a headwater stream

  Kallenbach, E. M. F., Sand-Jensen, K., Morsing, J., Martinsen, K. T., Kragh, T., Raulund-Rasmussen, K. & Båstrup-Spohr, L., 2018, In: Ecological Engineering. 116, p. 154-162 9 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Irradiance 100%
  • Headwater 100%
  • Ecosystem Response 100%
  • Watershed Restoration 100%
  • Early Ecosystem 100%
  2 Citations (Scopus)

• Faren ved at være en lille nøjsom plante

  Sand-Jensen, K., Schou, J. C., Moeslund, B., Bruun, H. H. & Båstrup-Spohr, L., 2018, In: Aktuel Naturvidenskab. 4, p. 20-25 6 p.

  Research output: Contribution to journal › Journal article › Communication

• Five decades of dramatic changes in submerged vegetation in Lake Constance

  Murphy, F., Schmieder, K., Båstrup-Spohr, L., Pedersen, O. & Sand‐Jensen, K., Jan 2018, In: Aquatic Botany. 144, p. 31-37 7 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Re-oligotrophication 100%
  • Secchi 100%
  • Domestic Sewage 49%
  • Functional nutrients 49%
  • Agricultural Runoff 49%
  14 Citations (Scopus)

  12 Downloads (Pure)

• High temperatures cause reduced growth, plant death and metabolic changes in eelgrass Zostera marina

  Hammer, K. J., Borum, J., Hasler-Sheetal, H., Shields, E. C., Sand-Jensen, K. & Moore, K. A., 4 Oct 2018, In: Marine Ecology Progress Series. 604, p. 121-132

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Reduced Growth 100%
  • High Temperature 100%
  • Meristematic 100%
  • Growing Plant 100%
  • Metabolic Changes 100%
  14 Citations (Scopus)

• Historiske forandringer af Danmarks landskab og flora

  Sand-Jensen, K., Schou, J. C., Nielsen, T. F., Moeslund, B., Holm, P., Bruun, H. H. & Båstrup-Spohr, L., 2018, In: URT. 42, 3, p. 8-13 6 p.

  Research output: Contribution to journal › Journal article › Communication

• Hyppigere iltsvind i søer i et varmere klima – Et forvarsel i Filsø?

  Kragh, T. & Sand-Jensen, K., 2018, In: Vand & Jord. 25, 3, p. 114-118

  Research output: Contribution to journal › Journal article › Communication

• Kalkudfældning, fotosyntese og fosforbinding hos kransnålalger i småsøer

  Sand-Jensen, K., Andersen, M., Kragh, T., Kristensen, E. & Martinsen, K. T., 2018, In: Vand & Jord. 25, 3, p. 101-104

  Research output: Contribution to journal › Journal article › Communication

• Karaktertræk hos planter i nye danske søer. Kort review

  Sand-Jensen, K., Rasmussen, N. M., Sø, J. S. & Båstrup-Spohr, L., 2018, In: Flora og Fauna. 124, p. 44-50 6 p.

  Research output: Contribution to journal › Journal article › Communication

• Kransnålalger: fascinerer og udfordrer

  Sand-Jensen, K., Schou, J. C., Moeslund, B. & Båstrup-Spohr, L., 2018, In: URT. 42, 4, p. 24-29 6 p.

  Research output: Contribution to journal › Journal article › Communication

• Photosynthesis and calcification of charophytes

  Sand-Jensen, K., Jensen, R. S., Gomes, M., Kristensen, E., Martinsen, K. T., Kragh, T., Baastrup-Spohr, L. & Borum, J., Oct 2018, In: Aquatic Botany. 149, p. 46-51

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Photosystem 100%
  • Charophyta 100%
  • Chara 100%
  • Inorganic Carbon 50%
  • Alkalinity 33%
  7 Citations (Scopus)

• The Dangers of Being a Small, Oligotrophic and Light Demanding Freshwater Plant across a Spatial and Historical Eutrophication Gradient in Southern Scandinavia

  Sand-Jensen, K., Bruun, H. H., Nielsen, T. F., Christiansen, D. M., Hartvig, P., Schou, J. C. & Båstrup-Spohr, L., 2 Feb 2018, In: Frontiers in Plant Science. 9, 14 p., 66.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Freshwater Plants 100%
  • Eutrophication 100%
  • Southern Scandinavia 100%
  • Freshwater Plant 100%
  • Scandinavia 100%
  7 Citations (Scopus)

  90 Downloads (Pure)

• Varm sommer med uventede konsekvenser for vandmiljøet

  Sand-Jensen, K., Martinsen, K. T. & Kragh, T., 2018, In: Aktuel Naturvidenskab. 6, p. 22-26

  Research output: Contribution to journal › Journal article › Communication
• 2017

  Danmarks vandplanter

  Schou, J. C., Moeslund, B., Båstrup-Spohr, L. & Sand-Jensen, K., 2017, BFN's Forlag. 560 p.

  Research output: Book/Report › Book › Communication

• Decade-long time delays in nutrient and plant species dynamics during eutrophication and re-oligotrophication of Lake Fure 1900–2015

  Sand-Jensen, K., Bruun, H. H. & Båstrup-Spohr, L., May 2017, In: Journal of Ecology. 105, 3, p. 690-700 11 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • P Concentration 100%
  • Plant Species 100%
  • Eutrophication 100%
  • Species Dynamics 100%
  • Macrophyte 100%
  30 Citations (Scopus)

• Extreme diel dissolved oxygen and carbon cycles in shallow vegetated lakes

  Andersen, M. R., Kragh, T. & Sand-Jensen, K., 13 Sept 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

  • Carbon Cycle 100%
  • Oxygen Cycle 100%
  • Diel Dissolved Oxygen 100%
  • Surface Water 100%
  • Bottom Water 100%
  26 Citations (Scopus)

• Fast phosphorus loss by sediment resuspension in a re-established shallow lake on former agricultural fields

  Kragh, T., Sand-Jensen, K., 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

  • Sediment Resuspension 100%
  • Resuspension 100%
  • Lake Restoration 75%
  • Sediment P 66%
  • Stream Input 66%
  9 Citations (Scopus)

• High rates and close diel coupling of primary production and ecosystem respiration in small, oligotrophic lakes

  Martinsen, K. T., Andersen, M. R., Kragh, T. & Sand-Jensen, K., 1 Oct 2017, In: Aquatic Sciences. 79, 4, p. 995-1007 13 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Humic Lake 100%
  • Well-dominated 75%
  • Mixing Patterns 75%
  12 Citations (Scopus)

• Mit liv med bondelandets natur: beretninger fra det tabte og genvundne land

  Sand-Jensen, K., 2017, Gyldendal. 291 p.

  Research output: Book/Report › Book › Communication

• Nye danske søer - design af optimal miljøtilstand og biodiversitet

  Sand-Jensen, K., Kragh, T., Borum, J., Båstrup-Spohr, L., 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

• Profound afternoon depression of ecosystem production and nighttime decline of respiration in a macrophyte-rich, shallow lake

  Kragh, T., Andersen, M. R. & Sand-Jensen, K., 2017, In: Oecologia. 185, 1, p. 157-170 14 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Shallow Lakes 100%
  • Respiration 100%
  • Net Ecosystem Production 100%
  • Ecosystem Production 100%
  • Macrophytes 100%
  12 Citations (Scopus)

• Profound daily vertical stratification and mixing in a small, shallow, wind-exposed lake with submerged macrophytes

  Andersen, M. R., Sand-Jensen, K., Woolway, R. I. & Jones, I. D., 1 Apr 2017, In: Aquatic Sciences. 79, 2, p. 395-406 12 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Small Lakes 100%
  • Submerged Macrophytes 100%
  • Vertical Mixing 100%
  • Vertical Stratification 100%
  • Charophyta 100%
  29 Citations (Scopus)

• Recovery of lake vegetation following reduced eutrophication and acidification

  Båstrup-Spohr, L., Sand-Jensen, K., Olesen, S. C. H. & Bruun, H. H., Nov 2017, In: Freshwater Biology. 62, 11, p. 1847-1857 11 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Species Richness 100%
  • Eutrophication 100%
  • Acidification 100%
  • Vegetation 100%
  • Alkaline Lake 75%
  16 Citations (Scopus)

• Time-restricted flight ability influences dispersal and colonization rates in a group of freshwater beetles

  Iversen, L. L., Rannap, R., Briggs, L. & Sand-Jensen, K., 1 Feb 2017, In: Ecology and Evolution. 7, 3, p. 824-830 7 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Flight Ability 100%
  • Flight 100%
  • Flight Activity 14%
  • Short-lived Species 14%
  • Flight Pattern 14%
  9 Citations (Scopus)

  78 Downloads (Pure)

• Øle Å-projektet - baggrund og indgrebet

  Morsing, J., Sand-Jensen, K., Båstrup-Spohr, L., Larsen, J. B. & Raulund-Rasmussen, K., 2017, In: Natur på Bornholm. 15, p. 36-41 6 p.

  Research output: Contribution to journal › Journal article › Communication
• 2016

  Acclimation of photosynthesis to supersaturated CO₂ in aquatic plant bicarbonate users

  Hussner, A., Mettler-Altmann, T., Weber, A. P. M. & Sand-Jensen, K., 1 Oct 2016, In: Freshwater Biology. 61, 10, p. 1720-1732 13 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Photosynthesis 100%
  • HCO3 100%
  • Aquatic Plants 100%
  • Inorganic Carbon 100%
  • Photosystem 100%
  37 Citations (Scopus)

• Are latitudinal richness gradients in European freshwater species only structured according to dispersal and time?

  Iversen, L. L., Jacobsen, D. & Sand-Jensen, K., 1 Dec 2016, In: Ecography. 39, 12, p. 1247-1249 3 p.

  Research output: Contribution to journal › Letter › peer-review

  3 Citations (Scopus)

• Forskere: landbrugspakken kommer til at koste mere natur, end vi tror

  Bruun, H. H., Sand-Jensen, K. & Borum, J., 25 Feb 2016, In: Altinget Miljø.

  Research output: Contribution to journal › Contribution to newspaper - Newspaper article

• Landbrugspakken - et risikabelt kvælstofeksperiment?

  Borum, J., Sand-Jensen, K. & Bruun, H. H., 2016, In: Aktuel Naturvidenskab. 2016, 3, p. 26-31 6 p.

  Research output: Contribution to journal › Journal article › Communication

• Leaf gas films, underwater photosynthesis and plant species distributions in a flood gradient

  Winkel, A., Visser, E. J. W., Colmer, T. D., Brodersen, K. P., Voesenek, L. A. C. J., Sand-Jensen, K. & Pedersen, O., 1 Jul 2016, In: Plant, Cell and Environment. 39, 7, p. 1537-1548 12 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Gas Exchange 100%
  • Photosystem 100%
  • Plant Species Distribution 100%
  • Flooding Gradient 100%
  • Submergence 66%
  21 Citations (Scopus)

• Lobeliesøer - trusler og restaurering

  Pedersen, O., Båstrup-Spohr, L., Madsen-Østerbye, M., Kristensen, E., Kragh, T., Andersen, M. R., Andersen, F. Ø. & Sand-Jensen, K., 2016, In: Vand & Jord. 23, 2, p. 63-66 4 p.

  Research output: Contribution to journal › Journal article › Research

• Rekonstruktion af planters udviklingshistorie - benspænd forvandledes til frugtbart forskningsemne

  Sand-Jensen, K., 2016, In: Vand & Jord. 23, 1, p. 4-9 6 p.

  Research output: Contribution to journal › Journal article › Communication

• Remarkable richness of aquatic macrophytes in 3-years old re-established Lake Fil, Denmark

  Båstrup-Spohr, L., Kragh, T., Petersen, K., Moeslund, B., Schou, J. C. & Sand-Jensen, K., 1 Oct 2016, In: Ecological Engineering. 95, p. 375-383 9 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Migratory Waterfowl 100%
  • Elatine 100%
  • Drainage Canal 100%
  • Lythrum 100%
  • Species Recruitment 100%
  12 Citations (Scopus)