Personal profile

Research areas

M

My present research fields: 

Utilization of algal biomass

The use of algal biomass as feed as well as for biofuels, high value products and waste water treatment.

Seagrass ecology

Effects of eutrophication on seagrass depth limits and occurrence, interactions between seagrass and sediment characteristics, effects of seagrass on nutrient cycling, seagrasses and multiple stressors, effects of anthropogenic contaminants on seagrasses.

Contaminants and plants and algae

Effects of contaminants – especially heavy metals – on photosynthesis, growth and survival in aquatic plants and algae.

Photosynthesis and photoinhibition in an ecological perspective

Carbon uptake and utilization in terrestrial and aquatic plants as well as algae. Light utilization and defense mechanisms against photoinhibition: Carotenoids, xanthophyll-cyclus, enzymatic quenching of free radicals, the physiological role of anthocyanins and other phenols in vegetative plant parts. The effects of natural and anthropogenic stressors, including heavy metals, on photosynthesis and photoinhibition. The relationship between the size, architecture and complexity of photosynthetic organisms and their photosynthetic and growth potential. The depth limits of aquatic plants modelled as a function of light and sediment characteristics.

Research and education information

Aquatic ecology

Plant biology

Plant ecophysiology

Plant ecology

Keywords

  • Biology, Biotechnology
  • Freshwater biology
  • Photoinhibition
  • Photosynthesis
  • Plant physiology
  • Plant ecology

Network Recent external collaboration on country level. Dive into details by clicking on the dots.

Research Output 1989 2018

Small-scale experiments aimed at optimization of large-scale production of the microalga Rhodomonas salina

Thoisen, C. V., Thuy, M. V. T., Carron-Cabaret, T., Jepsen, P. M., Nielsen, S. L. & Hansen, B. W. 13 Mar 2018 In : Journal of Applied Phycology. 10 p.

Research output: Contribution to journalJournal article

Open Access

A simple and fast method for extraction and quantification of cryptophyte phycoerythrin

Thoisen, C. V., Hansen, B. W. & Nielsen, S. L. 28 Jul 2017 In : MethodsX. 4, C, p. 209-213 5 p.

Research output: Contribution to journalJournal article

Open Access
File

Copper in the sediment: A major stressor for eelgrass, Zostera marina L

Nielsen, S. L., Banta, G. T., Khan, F. & Palmqvist, A. Mar 2017 In : Hydrobiologia. 788, 1, p. 143-155 13 p.

Research output: Contribution to journalJournal article

Mikroalger som mad

Thoisen, C. V. & Nielsen, S. L. Dec 2017 Dansk Tang. 16 p.

Research output: Book/ReportReport

Projects 2005 2018

Mikroalger som mad

Nielsen, S. L. & Thoisen, C. V.

01/11/201731/03/2018

Project: Research

AlgeInnovationsCenter

Madsen, P. H., Nielsen, S. L. & Holm-Nielsen, J. B.

Den europæiske fond for Regionsudvikling

01/08/201031/07/2013

Project: Research

Algal production for biofuel

Hunniche Madsen, P., Nielsen, S. L., Born, J. & Holm-Nielsen, J. B.

Lolland kommune

01/07/200931/12/2009

Project: Research

Activities 1988 2015

Roskilde Universitet (External organisation)

Nielsen, S. L. (Chairman)
3 Jun 2015

Activity: Membership in review committee

4th International Conference on Algal Biomass, Biofuels and Bioproducts

Nielsen, S. L. (Participant)
15 Jun 201418 Jun 2014

Activity: Organisation and participation in conference

Roskilde Universitet (External organisation)

Nielsen, S. L. (Chairman)
24 Oct 2014

Activity: Membership in review committee

ESOF14Euroscience Open Forum 2014

Nielsen, S. L. (Participant)
21 Jun 201426 Jun 2014

Activity: Organisation and participation in conference

17. danske havforskermøde

Nielsen, S. L. (Organizer)
21 Jan 201323 Jan 2013

Activity: Organisation and participation in conference

File

Press / Media

Havets græsplæner fjerner farlige bakterier

Søren Laurentius Nielsen

17/02/2017

1 item of media coverage

Press/Media: Press / Media

Miljøfremmede stoffer truer danske kystfarvande mere end vi tror

Søren Laurentius Nielsen

01/11/2016

1 item of media coverage

Press/Media: Press / Media

KORT NYT: Sukkertang bliver god forretning om 5-10 år

Søren Laurentius Nielsen

08/07/2015

1 item of media coverage

Press/Media: Press / Media