Lena Granhag

Associate Professor at Chalmers, Mechanics and Maritime Sciences, Maritime Studies, Maritime Environmental Sciences

Lena's background is in marine ecology working with biofouling on ship hulls. During a Marie Curie Fellowship at Plymouth Marine Laboratory in UK, Lena worked with the impact of bacterial films for development of biofouling, using the technique Fluorescence in situ Hybridization (FISH) to detect and localize different bacteria. Lena also works with marine alien species introduced with ballast water and via ship hulls and is a member of the expert group Ballast Water and Other Ship Vectors in International Marine Research Council (International Council for the Exploration of the Sea ICES).

Source: chalmers.se

Showing 40 publications

2019

Shipborne nutrient dynamics and impact on the eutrophication in the Baltic Sea

Urmas Raudsepp, Ilja Maljutenko, Mariliis Kouts et al
Science of the Total Environment. Vol. 671, p. 189-207
Journal article
2019

Towards an absolute scale for adhesion strength of ship hull microfouling

Dinis Oliveira, Lars Larsson, Lena Granhag
Biofouling. Vol. 35 (2), p. 244-258
Journal article
2019

A multi-aspect study of commercial coatings under the effect of surface roughness and fouling

Irma Yeginbayeva, Lena Granhag, Valery Chernoray
Progress in Organic Coatings. Vol. 135, p. 352-367
Journal article
2018

Phosphorus flows on ships: Case study from the Baltic Sea

Magda Wilewska-Bien, Lena Granhag, Jukka-Pekka Jalkanen et al
Proceedings of the Institution of Mechanical Engineers Part M: Journal of Engineering for the Maritime Environment
Journal article
2018

Experimental Quantification of Drag Change of Commercial Coatings Under the Effect of Surface Roughness and Soft Fouling

Irma Yeginbayeva, Valery Chernoray, Lena Granhag
3rd HullPIC ’ 18
Paper in proceedings
2018

Review and Historical Overview of Experimental Facilities Used in Hull Coating Hydrodynamic Tests

Irma Yeginbayeva, Lena Granhag, Valery Chernoray
Proceedings of the Institution of Mechanical Engineers Part M: Journal of Engineering for the Maritime Environment
Journal article
2018

Performance Values vs. Speed – A Declaration of Independence?

Dinis Oliveira, Lena Granhag, Lars Larsson
Paper in proceedings
2018

Pathways to reduction and efficient handling of food waste on passenger ships: from Baltic Sea perspective

Magda Wilewska-Bien, Karin Andersson, Lena Granhag
Environment, Development and Sustainability
Journal article
2018

Effect of ship hull form on the resistance penalty from biofouling

Dinis Oliveira, Ann I. Larsson, Lena Granhag
Biofouling. Vol. 34 (3), p. 262-272
Journal article
2017

Biofouling control solutions that can improve energy consumption in vessels

Irma Yeginbayeva, Lena Granhag, Valery Chernoray
Conference poster
2017

Biofouling Control Solutions for Reduced Energy Consumption in Vessels

Irma Yeginbayeva, Lena Granhag, Valery Chernoray et al
Conference poster
2016

The nutrient load from food waste generated onboard ships in the Baltic Sea

Magda Wilewska-Bien, Lena Granhag, Karin Andersson
Marine Pollution Bulletin. Vol. 105 (1), p. 359-366
Journal article
2016

Future Work on Drag and Boundary Layer Properties of Biofouling Collected From Commercial Vessels

Dinis Oliveira, Lena Granhag
1st Hull Performance & Insight Conference (HullPIC), p. 82-95
Conference contribution
2016

Shipping and the environment

Karin Andersson, Francesco Baldi, Selma Brynolf et al
Shipping and the Environment: Improving Environmental Performance in Marine Transportation, p. 3-27
Book chapter
2016

The natural environment and human impacts

Fredrik Lindgren, Kent Salo, Selma Brynolf et al
Shipping and the Environment: Improving Environmental Performance in Marine Transportation, p. 29-74
Book chapter
2016

Discharges to the sea

Fredrik Lindgren, Magda Wilewska-Bien, Lena Granhag et al
Shipping and the Environment: Improving Environmental Performance in Marine Transportation, p. 125-168
Book chapter
2016

Instantaneous Flow Structures and Opportunities for Larval Settlement: Barnacle Larvae Swim to Settle

Ann I. Larsson, Lena Granhag, Per R. Jonsson
PLoS ONE. Vol. 11 (7), p. e0158957-
Journal article
2016

Improving environmental performance in shipping

Selma Brynolf, Fredrik Lindgren, Karin Andersson et al
Shipping and the Environment: Improving Environmental Performance in Marine Transportation, p. 399-418
Book chapter
2016

Measures to reduce discharges and emissions

Magda Wilewska-Bien, Fredrik Lindgren, M. Magnusson et al
Shipping and the Environment: Improving Environmental Performance in Marine Transportation, p. 341-396
Book chapter
2016

Matching Forces Applied in Underwater Hull Cleaning with Adhesion Strength of Marine Organisms

Dinis Oliveira, Lena Granhag
Journal of Marine Science and Engineering. Vol. 4 (4), p. 66-
Journal article
2015

Autumnal bottom-up and top-down impacts of Cyanea capillata: a mesocosm study

Aino Hosia, Christina B. Augustin, Julie Dinasquet et al
Journal of Plankton Research. Vol. 37 (5), p. 1042-1055
Journal article
2015

Baseline survey of non-indigenous species in the Baltic Sea ports -Testing and evaluating the HELCOM-OSPAR Port Survey Protocol

Riikka Puntila, Henn Ojaveer, Lena Granhag et al
ICES Annual Science Conference
Paper in proceedings
2014

Comparison between introduced and native ctenophores in Nordic waters -feeding rates and survival in low food conditions

Lena Granhag, Aino Hosia
ICES International Council for Exploration of the Sea Annual Science conference
Paper in proceedings
2014

The importance of bacterial film composition for germination of zoospores of the green alga Ulva

Lena Granhag, Ian Joint
International Congress on Marine Corrosion and Fouling, Singapore 6-10 July 2014
Conference poster
2012

Experimental feeding rates of gelatinous predators Aurelia aurita and Mnemiopsis leidyi at low northern Baltic Sea salinity

A. Hosia, Lena Granhag, T. Katajisto et al
Boreal Environment Research. Vol. 17 (6), p. 473-483
Journal article
2012

Cascading effects of the ctenophore Mnemiopsis leidyi on the planktonic food web in a nutrient-limited estuarine system

Julie Dinasquet, Josefin Titelman, Lene Friis Møller et al
Marine Ecology - Progress Series. Vol. 460, p. 49-61
Journal article
2012

First recordings of the ctenophore Euplokamis sp. (Ctenophora, Cydippida) in Swedish coastal waters and molecular identification of this genus

Lena Granhag, Sanna Majaneva, Lene Friis Møller
Aquatic Invasions. Vol. 7 (4), p. 455-463
Journal article
2012

Stimulated bacterioplankton growth and selection for certain bacterial taxa in the vicinity of the ctenophore Mnemiopsis leidyi

Julie Dinasquet, Lena Granhag, Lasse Riemann
Frontiers in Microbiology. Vol. 3 (AUG), p. Art. no. 302-
Journal article
2012

Fouling-release of barnacles and algae from a ship hull

Lena Granhag
International Congress on Marine Corrosion and Fouling (ICMCF), 24-28 June 2012, Seattle, WA, US
Paper in proceedings
2011

Size-specific clearance rates of the ctenophore Mnemiopsis leidyi based on in situ gut content analyses

Lena Granhag, Lene Friis Møller, Lars Johan Hansson
Journal of Plankton Research. Vol. 33 (7), p. 1043-1052
Journal article
2010

Fouling-release of barnacles from a boat hull with comparison to laboratory data of attachment strength

Ann I. Larsson, Linnea Mattsson-Thorngren, Lena Granhag et al
Journal of Experimental Marine Biology and Ecology. Vol. 392 (1-2), p. 107-114
Journal article
2007

Algal spore settlement and sporling removal as a function of flow speed

Lena Granhag, Ann I. Larsson, Per R. Jonsson
Mar Ecol Prog Ser. Vol. 344, p. 63-69
Journal article
2006

Interactions between wave action and grazing control the distribution of intertidal macroalgae

Per R. Jonsson, Lena Granhag, P. S. Moschella et al
Ecology. Vol. 87 (5), p. 1169-1178
Journal article
2005

Low-crested coastal defence structures as artificial habitats for marine life: Using ecological criteria in design

P. S. Moschella, M. Abbiati, Per Åberg et al
Coastal Engineering. Vol. 52 (10-11), p. 1053-1071
Journal article
2004

Roughness-dependent removal of settled spores of the green alga Ulva (syn. Enteromorpha) exposed to hydrodynamic forces from a water jet

Lena Granhag, J. A. Finlay, Per R. Jonsson et al
Biofouling. Vol. 20 (2), p. 117-122
Journal article

Save references

If you have installed Zotero or Mendeley on your computer you can use a plugin to extract references from the publications you see.

Download plugins:
Zotero
Mendeley

Showing 11 research projects

2019–2019

Novel antifouling strategies

Lena Granhag Maritime Environmental Sciences
Valery Chernoray Fluid Dynamics
Chalmers

2018–2019

Åtgärder mot minskad miljöbelastning från Sjöfart i Östersjön genom ny kunskap om läckage av gift från antifoulingfärg

Lena Granhag Maritime Environmental Sciences
Maria Lagerström Maritime Environmental Sciences
Erik Ytreberg Maritime Environmental Sciences
BalticSea2020

2017–2020

Completing management options in the Baltic Sea Region to reduce risk of invasive species introduction by shipping COMPLETE

Lena Granhag Maritime Environmental Sciences
Dinis Oliveira Maritime Environmental Sciences
Interreg-BSR

2017–2019

Biofouling solutions that can improve energy consumption of vessels

Irma Yeginbayeva Maritime Environmental Sciences
Lena Granhag Maritime Environmental Sciences
Valery Chernoray Fluid Dynamics
Chalmers

2017–2018

Nutrient input to the Baltic Sea from shipping

Lena Granhag Maritime Environmental Sciences
Magda Wilewska-Bien Maritime Environmental Sciences
Karin Andersson Maritime Environmental Sciences
BalticSea2020

2017–2019

3D-printed biomimetic microstructures for the control of marine biofouling

Lena Granhag Maritime Environmental Sciences
Formas

2015–2018

Sustainable Shipping and Environment of the Baltic Sea region (SHEBA)

Martin Eriksson Maritime Environmental Sciences
Kent Salo Maritime Environmental Sciences
Lena Granhag Maritime Environmental Sciences
Ida-Maja Hassellöv Maritime Environmental Sciences
Rickard Bensow Marine Technology
Magda Wilewska-Bien Maritime Environmental Sciences
Erik Ytreberg Maritime Environmental Sciences
Baltic Organisations' Network for Funding Science EEIG (BONUS)
Swedish Environmental Protection Agency

2015–2017

Increased energy efficiency in ships through reduced hull fouling

Lena Granhag Maritime Environmental Sciences
Rickard Bensow Marine Technology
Dinis Soares Reis de Oliveira Maritime Environmental Sciences
Swedish Energy Agency

2014–2015

Impoving risk assessment of invasive alien species and cost-efficiency analysis of ballast water treatment methods (IRIS)

Lena Granhag Maritime Environmental Sciences
European Commission (EC)

2013–2013

HELCOM ALIENS 3

Lena Granhag Maritime Environmental Sciences
Baltic Marine Environment Protection Commission (Helsonki Commission HELCOM)

There might be more projects where Lena Granhag participates, but you have to be logged in as a Chalmers employee to see them.