PhD, Deakin University, Burwood campus, AUS, 2016-current
Junior Researcher at Estonian Marine Institute, University of Tartu, EST, 2014-2016
BSc (hons) Marine Biology, University of Aberdeen, Scotland, UK, 2010-2014
Holger’s interests broadly include ecosystem functioning and how the resilience and services of coastal ecosystems can be affected by the current climate change coupled with various other anthropogenic stressors. So far Holger has been involved with various different projects targeting benthic as well as pelagic ecology, invasive species and ecosystem functioning.
The overall aim of Holger’s PhD project is to map how ecosystem structure is linked to functioning and how this translates into ecosystem services (e.g. harvestable goods). He is interested in using novel techniques such as functional trait analysis (FTA) to relate community traits to ecological functioning instead of using traditional assessments that rely on taxonomic classification, abundance and diversity estimates. Knowledge about how functional traits translate to ecosystem functioning enable him to determine what happens if we should lose important species or habitat area responsible for targeted ecosystem services. Then he can examine whether it is possible to maintain current ecosystem services under changing environmental conditions and whether novel species and interactions could provide similar functions the lost ones.
Awarded The Nature Conservancy Australia and Deakin University PhD scholarship, 2016-2019, to investigate coastal ecosystem services and the functional performance of ecosystems as part of the Global Mapping Ocean Wealth project.
Functional traits predict macroalgal primary production. Jänes H., Kotta J., Pärnoja M.,
Crowe T.P., Rindi F., Orav-Kotta H. Journal of Functional Ecology. (under revision)
Essence of the patterns of cover and richness of intertidal hard bottom communities: A pan-European study. Kotta J., Orav-Kotta H., Jänes H., et al. Journal of the Marine Biological Association of the United Kingdom. (Accepted)
Which environmental scales and factors matter for mesozooplankton communities in shallow brackish water ecosystems? 2016. Lennuk L., Kotta J., Lauringson V., Taits K., Jänes H. 2016. Journal of Plankton Research. doi:10.1093/plankt/fbv111
High fecundity and predation pressure of the invasive Gammarus tigrinus cause decline of indigenous gammarids. 2015. Jänes H., Kotta J., Herkül K. Estuarine, Coastal and Shelf Science. doi:10.1016/j.ecss.2015.05.014
Mean weight and total biomass of zooplankton as a core indicator of biodiversity of the Marine Strategy Framework Directive: an example of the Gulf of Riga. 2014. Simm M., Kotta J., Jänes H. Estonian Journal of Ecology. doi: 10.3176/eco.2014.4.03