Dr Stephanie Evers

School of Biological and Environmental Sciences

-Reader 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.

Degrees

2007, University of Glasgow, United Kingdom, PhD

Academic appointments

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

Highlighted publications

Cooper HV, Evers S, Aplin P, Crout N, Bin Dahalan MP, Sjogersten S. 2020. Author Correction: Greenhouse gas emissions resulting from conversion of peat swamp forest to oil palm plantation (Nature Communications, (2020), 11, 1, (407), 10.1038/s41467-020-14298-w) Nature Communications, 11 DOI Author Url

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 Author Url Public Url

Journal article

Evans CD, Callaghan N, Jaya A, Grinham A, Sjogersten S, Page S, Harrison M, Kusin K, Khoon Kho L, Ledger M, Evers S, Mitchell Z, Williamson J, Radbourne A, Jovani-Sancho AJ. 2021. A novel low-cost, high-resolution camera system for measuring peat subsidence and water table dynamics Frontiers in Environmental Science, DOI Public Url

Dhandapani S, Evers S, Ritz K, Sjögersten S. 2021. Nutrient and trace element concentrations influence greenhouse gas emissions from Malaysian tropical peatlands Soil Use and Management, 37 :138-150 DOI

Dhandapani S, Girkin NT, Evers S. 2021. Spatial variability of surface peat properties and carbon emissions in a tropical peatland oil palm monoculture during a dry season Soil Use and Management, DOI

Cooper HV, Evers S, Aplin P, Crout N, Bin Dahalan MP, Sjogersten S. 2020. Author Correction: Greenhouse gas emissions resulting from conversion of peat swamp forest to oil palm plantation (Nature Communications, (2020), 11, 1, (407), 10.1038/s41467-020-14298-w) Nature Communications, 11 DOI Author Url

Dhandapani S, Ritz K, Evers S, Cooper H, Tonks A, Sjögersten S. 2020. Land-Use Changes Associated with Oil Palm Plantations Impact PLFA Microbial Phenotypic Community Structure throughout the Depth of Tropical Peats Wetlands, 40 :2351-2366 DOI

Dhandapani S, Evers S. 2020. Oil palm 'slash-and-burn' practice increases post-fire greenhouse gas emissions and nutrient concentrations in burnt regions of an agricultural tropical peatland Science of the Total Environment, 742 DOI Author Url Publisher Url Public Url

O'reilly P, Anshari G, Sancho JJ, Jaya A, Antang E, Antang C, Evers S, Evans C, Wilson P, Crout N, Sjorgesten S, Upton C, Page S. 2020. Oil palm governance at the grassroots: How assemblage links oil palm, livelihoods and local administration in an indonesian village. International Review of Modern Sociology, 46 :107-126

Dhandapani S, Girkin NT, Evers S, Ritz K, Sjögersten S. 2020. Is intercropping an environmentally-wise alternative to established oil palm monoculture in tropical peatlands? Frontiers in Forests and Global Change, DOI Publisher Url Public Url

Cooper H, Evers S, Aplin P, Crout N, Puat Bin Dahalan M, Sjogersten S. 2020. Greenhouse gas emissions resulting from conversion of peat swamp forest to oil palm plantation Nature Communications, 11 DOI Author Url Publisher Url Public Url

Tian W, Xiang X, Evers S, Ma L, Wang R, Qiu X, Wang H. 2020. Rare Species Shift the Structure of Bacterial Communities Across Sphagnum Compartments in a Subalpine Peatland Frontiers in Microbiology, 10 :3138-3138 DOI Author Url Publisher Url Public Url

Girkin NT, Dhandapani S, Evers S, Ostle N, Turner BL, Sjögersten S. 2020. Interactions between labile carbon, temperature and land use regulate carbon dioxide and methane production in tropical peat Biogeochemistry: an international journal, 147 :87-97 DOI Publisher Url Public Url

Dhandapani S, Ritz K, Evers S, Sjögersten S. 2019. GHG emission under different cropping systems in some Histosols of Malaysia Geoderma Regional, 18 DOI Author Url Publisher Url Public Url

Waldron S, Vihermaa L, Evers S, Garnett MH, Newton J, Henderson ACG. 2019. C mobilisation in disturbed tropical peat swamps: old DOC can fuel the fluvial efflux of old carbon dioxide, but site recovery can occur Scientific Reports, 9 DOI Author Url Publisher Url Public Url

Cooper HV, Vane CH, Evers S, Aplin P, Girkin NT, Sjögersten S. 2019. From peat swamp forest to oil palm plantations: The stability of tropical peatland carbon Geoderma, 342 :109-117 DOI Publisher Url Public Url

Padfield R, Hansen S, Davies Z, Ehrensperger A, Slade E, Evers S, Papargyropoulou E, Bessou C, Abdullah N, Page S, Ancrenaz M, Aplin P, Dzulkafli SB, Barclay H, Chellaiah D, Choudhary S, Conway S, Cook S, Copeland A, Campos-Arceiz A, Deere NJ, Drew S, Gilvear D, Gray R, Haller T, Hood ASC, Huat LK, Huynh N, Kangayatkarasu N, Koh LP, Kolandai SK, Lim RAH, Yeong KL, Lucey JM, Luke SH, Mitchell SL, Montefrio MJ, Mullin K, Nainar A, Nekaris KI, Nijman V, Nunes M, Nurhidayu S, O'Reilly P, Puan CL, Ruppert N, Salim H, Schouten G, Tallontire A, Smith TEL, Tao HH, Tham MH, Varkkey H, Wadey J, Yule CM, Azhar B, Sayok AK, Vairappan C, Bicknell JE, Struebig MJ. 2019. Co-producing a Research Agenda for Sustainable Palm Oil Frontiers in Forests and Global Change, 2 DOI Publisher Url Public Url

Dhandapani S, Ritz K, Evers S, Sjögersten S. 2019. Environmental impacts as affected by different oil palm cropping systems in tropical peatlands Agriculture, Ecosystems and Environment, 276 :8-20 DOI Author Url Publisher Url Public Url

Dhandapani S, Ritz K, Evers S, Yule CM, Sjogersten S. 2019. Are secondary forests second-rate? Comparing peatland greenhouse gas emissions, chemical and microbial community properties between primary and secondary forests in Peninsular Malaysia Science of the Total Environment, 655 :220-231 DOI Author Url Publisher Url Public Url

Charters LJ, Aplin P, Marston CG, Padfield R, Rengasamy N, Bin Dahalan MP, Evers S. 2019. Peat swamp forest conservation withstands pervasive land conversion to oil palm plantation in North Selangor, Malaysia International Journal of Remote Sensing, DOI Public Url

Marshall C, Large DJ, Athab A, Evers SL, Sowter A, Marsh S, Sjogersten S. 2018. Monitoring tropical peat related settlement using ISBAS InSAR, Kuala Lumpur International Airport (KLIA) ENGINEERING GEOLOGY, 244 :57-65 DOI Author Url

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 Author Url Publisher Url Public Url

Brown C, Boyd DS, Sjögersten S, Clewley D, Evers SL, Aplin P. 2018. Tropical Peatland Vegetation Structure and Biomass: Optimal Exploitation of Airborne Laser Scanning Remote Sensing, 10 DOI Author Url Publisher Url Public Url

Smith T, Evers SL, Yule C, Gan J. 2018. In situ tropical peatland fire emission factors and their variability, as determined by field measurements in Peninsula Malaysia. Global Biogeochemical Cycles, 32 :18-31 DOI Public Url

Matysek M, Evers SL, Samuel MK, Sjogersten S. 2017. High heterotrophic CO2 emissions from a Malaysian oil palm plantations during dry-season Wetlands Ecology and Management, 26 :415-424 DOI Public Url

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 Author Url Publisher Url Public Url

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 Author Url Public Url

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 Public Url

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 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 DOI Public Url

Adesiji RA, Ahmed Mohammad T, Norsyahariati Nik Dauda, N, Mustapha S, Sayok AK, Padfield R, Evers S. 2015. Investigating the Influence of Rainfall on Soil Carbon Quantity in a Tropical Peatland Procedia Environmental Sciences, DOI

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 DOI Public Url

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 Public Url

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 DOI Public Url

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 Author Url

Chapters

Adeolu AR, Mohammad TA, Nik Daud NN, Sayok A, Padfield R, Evers S. Chapter 6 - Soil Carbon and Nitrogen Dynamics in a Tropical Peatland Soil Management and Climate Change Effects on Organic Carbon, Nitrogen Dynamics, and Greenhouse Gas Emissions DOI

Top