Dr Maarten van Hardenbroek van Ammerstol
Lecturer in Physical Geography
- Email: email@example.com
- Telephone: +44 (0)191 208 3567
- Fax: +44 (0)191 208 5421
- Address: School of Geography, Politics and Sociology,
Newcastle upon Tyne,
NE1 7RU, UK
Room: Daysh 2.18a
I joined Newcastle University in 2017 after five years as postdoctoral researcher working on a number of projects at the University of Bern and the University of Southampton.
2017 - Lecturer in Physical Geography, Newcastle University, UK
2013 - 2016 Postdoctoral researcher, Palaeoenvironmental Laboratory, University of Southampton, UK
2011 - 2013 Postdoctoral researcher, Aquatic Palaeoecology, University of Bern, Switzerland
2007 - 2011 PhD Palaeoecology, Utrecht University, The Netherlands
2005 - 2006 MSc Quaternary Science, Royal Holloway University of London, UK
2002 - 2005 BSc Environmental Science, Utrecht University, The Netherlands
In my research I aim to understand the processes that cause environmental change – both natural or anthropogenic – and their impacts on aquatic ecosystems. I do this by studying lakes and sediment records from lakes as they contain evidence of environmental change happening over long time periods. Some of my work involves monitoring modern systems, other projects study trends and events in the past 15,000 years. You can find an overview of my research interest and projects below. My study sites include arctic lakes in Alaska, Greenland, Norway, and Siberia, boreal lakes in Alaska, Sweden and Finland, and temperate lakes in the UK, Ireland, Germany, the Netherlands and Switzerland.
Greenhouse gas emissions from lakes – past and present
Lakes and wetlands are the largest natural source of methane, a potent greenhouse gas. It is still not very well known which processes control these methane emissions. I pioneered the use of stable carbon isotopes of invertebrate remains as a tracer for past methane availability in lakes. My work also includes monitoring greenhouse gas emissions from modern lakes. Pictures from fieldwork here and here.
Aquatic food web structure under stress
Pollution, eutrophication, and fisheries put severe stresses on lake ecosystems. Aquatic food webs can respond to these stressors gradually, but in many lakes the change is rapid and catastrophic once a threshold is passed. Together with colleagues at the Nanjing Institute for Geography and Limnology I study changes in the structure of aquatic food webs. We combine two innovative approaches analysing sedimentary remains: stable isotopes and network analysis. Pictures from fieldwork here and here.
Environmental impact of prehistoric settlements
I am fascinated by prehistoric lake settlements because of their superb preservation in waterlogged conditions. Using new sedaDNA methodology I investigate how crannogs (lake dwellings in Ireland and Scotland) impacted on their environment. Information from geochemistry and biological remains creates a complete picture of how our ancestors interacted with their environment. Some pictures here.
Arctic lakes as sentinels for climate change
Several positive feedback mechanisms amplify the impact of global warming on biogeochemical cycles and ecosystems in the Arctic. As a result, it is difficult to predict how the Arctic will response to future warming. Lake sediment records contain evidence of the timing and extent of global warming, permafrost thaw, nutrient release, vegetation change, and carbon cycling in the past – crucial for understanding what the future might hold. Fieldwork pictures from Siberia, interior Alaska, Lake Teshekpuk, outreach with schools.
Taxon-specific stable isotope analysis
I'm very interested in developing the use of stable isotopes (H, C, N, O) measured on sedimentary remains of organisms. Stable isotopes can provide detailed information about energy sources, food web structure, and habitat as well as insights into climate and hydrological processes. I use remains of chironomids (non-biting midges), cladocerans (water fleas), Coleoptera (beetles), bryozoans (moss animals), and many other groups as well as fish scales and other remains. Pictures of invertebrates and their remains and their remains and laboratory work.
- Morlock MA, Schilder J, van Hardenbroek M, Szidat S, Wooller MJ, Heiri O. Seasonality of cladoceran and bryozoan resting stage δ13C values and implications for their use as palaeolimnological indicators of lacustrine carbon cycle dynamics. Journal of Paleolimnology 2017, 57(2), 141-156.
- van Hardenbroek M, Leuenberger M, Hartikainen H, Okamura B, Heiri O. Bryozoan stable carbon and hydrogen isotopes: relationships between the isotopic composition of zooids, statoblasts and lake water. Hydrobiologia 2016, 765(1), 209-223.
- Webb M, Barker PA, Wynn PM, Heiri O, van Hardenbroek M, Pick F, Russell JM, Leng MJ. Interpretation and application of carbon isotope ratios in freshwater diatom silica. Journal of Quaternary Science 2016, 31(4), 300-309.
- Rinta P, van Hardenbroek M, Jones RI, Kankaala P, Rey F, Szidat S, Wooller MJ, Heiri O. Land use affects carbon sources to the pelagic food web in a small boreal lake. PLoS One 2016, 11(8), e0159900.
- McGowan S, Anderson N, Edwards M, Langdon P, Jones V, van Hardenbroek M, Whiteford E, Wiik E. Long-term perspectives on terrestrial and aquatic carbon cycling from palaeolimnology. Wiley Interdisciplinary Reviews: Water 2016, 3(2), 211-234.
- Schilder J, Bastviken D, van Hardenbroek M, Heiri O. Spatiotemporal patterns in methane flux and gas transfer velocity at low wind speeds: Implications for upscaling studies on small lakes. Journal of Geophysical Research: Biogeosciences 2016, 121(6), 1456–1467.
- Rinta P, Bastviken D, van Hardenbroek M, Kankaala P, Leuenberger M, Schilder J, Stötter T, Heiri O. An inter-regional assessment of concentrations and δ13C values of methane and dissolved inorganic carbon in small European lakes. Aquatic Sciences 2015, 77(4), 667–680.
- Nazarova L, Self AE, Brooks SJ, van Hardenbroek M, Herzschuh U, Diekmann B. Northern Russian chironomid-based modern summer temperature data set and inference models. Global and Planetary Change 2015, 134, 10-25.
- Schilder J, Bastviken D, van Hardenbroek M, Leuenberger M, Rinta P, Stötter T, Heiri O. The stable carbon isotopic composition of Daphnia ephippia in small, temperate lakes reflects in-lake methane availability. Limnology and Oceanography 2015, 60(3), 1064–1075.
- Schilder J, Tellenbach C, Most M, Spaak P, van Hardenbroek M, Wooller MJ, Heiri O. The stable isotopic composition of Daphnia ephippia reflects changes in δ13C and δ18O values of food and water. Biogeosciences 2015, 12, 3819–3830.
- van Hardenbroek M, Lotter AF, Bastviken D, Andersen TJ, Heiri O. Taxon-specific δ13C analysis of chitinous invertebrate remains in sediments from Strandsjön, Sweden. Journal of Paleolimnology 2014, 52(1), 95-105.
- van Hardenbroek M, Heiri O, Parmentier FJW, Bastviken D, Ilyashuk BP, Wiklund JA, Hall RI, Lotter AF. Evidence for past variations in methane availability in a Siberian thermokarst lake based on δ13C of chitinous invertebrate remains. Quaternary Science Reviews 2013, 66, 74-84.
- Nováková K, van Hardenbroek M, van der Knaap WO. Response of subfossil Cladocera in Gerzensee (Swiss Plateau) to early Late Glacial environmental changes. Palaeogeography, Palaeoclimatology, Palaeoecology 2013, 391B, 84-89.
- Ammann B, van Raden U, Schwander J, Eicher U, Gilli A, Bernasconi SM, van Leeuwen JFN, Lischke H, Brooks SJ, Heiri O, Nováková K, van Hardenbroek M, von Grafenstein U, Belmecheri S, van der Knaap WO, Magny M, Eugster W, Colombaroli D, Nielsen E, Tinner W, Wright HE. Responses to rapid warming at Termination 1a at Gerzensee (Central Europe): Primary succession, albedo, soils, lake development, and ecological interactions. Palaeogeography, Palaeoclimatology, Palaeoecology 2013, 391B, 111-131.
- Schilder J, Bastviken D, van Hardenbroek M, Kankaala P, Rinta P, Stötter T, Heiri O. Spatial heterogeneity and lake morphology affect diffusive greenhouse gas emission estimates of lakes. Geophysical Research Letters 2013, 40, 5752–5756.
- van Hardenbroek M, Gröcke DR, Sauer P, Elias SA. North American transect of stable hydrogen and oxygen isotopes in water beetles from a museum collection. Journal of Paleolimnology 2012, 48, 461–470.
- van Hardenbroek M, Lotter AF, Bastviken D, Duc NT, Heiri O. Relationship between δ13C of chironomid remains and methane flux in Swedish lakes. Freshwater Biology 2012, 57, 166–177.
- Heiri O, Schilder J, van Hardenbroek M. Stable isotopic analysis of fossil chironomids as an approach to environmental reconstruction: state of development and future challenges. Fauna Norvegica 2012, 31, 7-18.
- van Hardenbroek M, Heiri O, Wilhelm MF, Lotter AF. How representative are subfossil assemblages of Chironomidae and common benthic invertebrates for the living fauna of Lake De Waay, the Netherlands?. Aquatic Sciences 2011, 73(2), 247–259.
- Gröcke DR, van Hardenbroek M, Sauer P, Elias SA. Hydrogen Isotopes in Beetle Chitin. In: Gupta SN, ed. Chitin: formation and diagenesis. Springer, 2011, pp.105-116.
- Kirilova E, van Hardenbroek M, Heiri O, Cremer H, Lotter AF. 500 years of trophic-state history of a hypertrophic Dutch dike-breach lake. Journal of Paleolimnology 2010, 43(4), 829–842.
- van Hardenbroek M, Heiri O, Lotter AF. Efficiency of different mesh sizes for isolating fossil chironomids for stable isotope and radiocarbon analyses. Journal of Paleolimnology 2010, 44(2), 721–729.
- van Hardenbroek M, Heiri O, Grey J, Bodelier PLE, Verbruggen F, Lotter AF. Fossil chironomid δ13C as a proxy for past methanogenic contribution to benthic food-webs in lakes?. Journal of Paleolimnology 2010, 43(2), 235–245.
- Heiri O, Wooller MJ, van Hardenbroek M, Wang Y. Stable isotopes in chitinous fossils of aquatic invertebrates. PAGES Newsletter 2009, 17(3), 100-102.