Liverpool Skylilne

Natural Sciences and Psychology

Dr Stephanie Evers

Dr Stephanie Evers

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Biography

-Senior Lecturer in Aquatic Ecology and Biogeochemistry, School of Natural Sciences and Psychology, Liverpool John Moores University,
-Honorary Associate Professor in Environmental Science, School of Geographical and Environmental Sciences, University of Nottingham Malaysia Campus,

Overview:

My research focuses on wetlands ecology and biogeochemistry. Primarily I am interested in the impact of conversion of tropical peat swamp forests to agriculture and the impact to Greenhouse Gas (GHG) emissions, alteration to soil physicochemistry and ecological functioning of these unique tropical ecosystems with conversion as well as in relation to rehabilitation activities.

I am founder and Principal Investigator (PI) of an international multi-disciplinary research consortium called TROCARI (Tropical Catchment Research Initiative) whose focus is on research related to tropical peat ecosystem function, degradation impacts to ecology, GHG emissions and climate change, ecosystem services and socio-political implications. The consortium is bound by a MoU but more recently has been extended into a larger international network of academic, government, NGO and industry partners. Though this, I have 5 current PhD students and one completed.

Background to tropical peatlands:

Tropical peatlands in Southeast Asia are a globally important ecosystem for carbon storage, biodiversity provision and hydrological regulation. The region comprises approximately 24.8 MHa and stores 68.5Gt of carbon (C). However, tropical peat swamp forests (PSFs) are under increasing threat from agricultural conversion, deforestation, drainage and fires. Alteration of the soil environment via drainage and the resulting peat oxidation alters the microbial community composition, abundance, and activity levels. This increases rates of organic matter decomposition and greenhouse gas (GHG) emissions. Consequently, drained peats revert from C stores to sources, with soil CO2 emissions and fluvial emissions (from drainage ditches) of carbon being many millions of tonnes per year. On top of that fire emissions driven by drained and dried peatlands, are equivalent to 2.3–8.2% of global CO2 emissions from fossil fuel burning. With the increasing recognition of the fundamental unsustainability of drainage-based agricultural conversion on peatlands, research undertaken by the research group TROCARI, considers the extent to these losses, implications to ecosystem services and effective methods for rehabilitation/wiser use of peatlands into the future.

Academic appointments

Senior Lecturer in Aquatic Ecology and Biogeochemistry, School of Natural Sciences and Psychology, Liverpool Jogn Moores University, 2016 - present
Honorary Associate Professor in Environemtal Science, School of Geogrphical and Environmental Sciences, University of Nottingham Malaysia Campus, 2016 - present

Publications

Highlighted publications

Evers S, Yule CM, Padfield R, O'Reilly P, Varkkey H. 2017. Keep wetlands wet: the myth of sustainable development of tropical peatlands – implications for policies and management Global Change Biology, 23 :534-549 >DOI

Journal article

Marshall C, Large DJ, Athab A, Evers SL, Sowter A, Marsh S, Sjögersten S. 2018. Monitoring tropical peat related settlement using ISBAS InSAR, Kuala Lumpur International Airport (KLIA) Engineering Geology, 244 :57-65 >DOI

Roulston C, Paton-Walsh C, Smith TEL, Guérette É-A, Evers SL, Yule CM, Rein G, van der Werf GR. 2018. Fine particle emissions from tropical peat fires decrease rapidly with time since ignition Journal of Geophysical Research: Atmospheres, 123 :5607-5617 >DOI

Tonks AJ, Aplin P, Beriro DJ, Cooper H, Evers S, Vane CH, Sjogersten S. 2017. Impacts of conversion of tropical peat swamp forest to oil palm plantation on peat organic chemistry, physical properties and carbon stocks GEODERMA, 289 :36-45 >DOI >Link

Evers S, Yule CM, Padfield R, O'Reilly P, Varkkey H. 2017. Keep wetlands wet: the myth of sustainable development of tropical peatlands – implications for policies and management Global Change Biology, 23 :534-549 >DOI

Padfield P, Drew S, Syayuti K, Page S, Evers SL, Campos-Arceiz A, Kangayatkarasu N, Sayok A, Hansen S, Schouten G, Maulidia M, Papargyropoulou E, Mun Hou T. 2016. Landscapes in transition: an analysis of sustainable policy initiatives and emerging corporate commitments in the palm oil industry Landscape Research, 41 :744-756 >DOI

Sjögersten S, Black CR, Evers SL, Hoyos-Santillan J, Wright EL, Turner BL. 2015. Tropical wetlands: A missing link in the global carbon cycle? GLOBAL BIOGEOCHEMICAL CYCLES, 28 :1371-1371

Belle Hansen S, Padfield R, Syayuti K, Evers SL, Zakariah Z, Mastura S. 2015. Trends in global palm oil sustainability research JOURNAL OF CLEANER PRODUCTION, 100 :140-149 >DOI

Padfield R, Waldron S, Drew S, Papargyropoulou E, Kumaran S, Page S, Gilvear D, Armstrong A, Evers SL, Williams P, Zakaria Z, Chin SY, Balle Hansen S, Campos Arceiz A, Latif MT, Sayok A, Tham MH. 2015. Research agendas for the sustainable management of tropical peatland in Malaysia ENVIRONMENTAL CONSERVATION, 42 :73-83

Caffrey J, Millane M, Evers SL, Moran H. 2011. Management of Lagarosiphon major (ridley) moss in lough corrib-a review Biology and Environment: proceedings of the Royal Irish Academy, 111B :205-212

Caffrey J, Evers SL, Millane M, Moran H. 2011. Current status of Ireland's newest invasive species -the Asian clam Corbicula fluminea (Müller, 1774) Aquatic Invasions, 6 :291-299 >DOI

Caffrey J, Millane M, Evers SL, Moran H, Butler M. 2010. A novel approach to aquatic weed control and habitat restoration using biodegradable jute matting Aquatic Invasions, 5 :123-129

Brown C, Boyd DS, Sjögersten S, Clewley D, Evers SL, Aplin P. Tropical Peatland Vegetation Structure and Biomass: Optimal Exploitation of Airborne Laser Scanning Remote Sensing, >DOI

Smith T, Evers SL, Yule C, Gan J. In situ tropical peatland fire emission factors and their variability, as determined by field measurements in Peninsula Malaysia. Global Biogeochemical Cycles, >DOI

Matysek M, Evers SL, Samuel MK, Sjogersten S. High heterotrophic CO2 emissions from a Malaysian oil palm plantations during dry-season Wetlands Ecology and Management,

Editorial/letter to the editor

Wijedasa LS, Jauhiainen J, Könönen M, Lampela M, Vasander H, LeBlanc M, Evers SL, et al., . 2016. Denial of long-term issues with agriculture on tropical peatlands will have devastating consequences GLOBAL CHANGE BIOLOGY, >DOI