A5017137244- Peatlands and Wetlands Ecology
- Constructed Wetlands for Wastewater Treatment
- Coastal wetland ecosystem dynamics
- Soil and Water Nutrient Dynamics
- Hydrology and Watershed Management Studies
- Methane Hydrates and Related Phenomena
- Atmospheric and Environmental Gas Dynamics
University of Tartu
2022-2025
Efficient agricultural production requires favourable weather conditions, healthy soil and an adequate supply of nutrients. In farming, common alternatives to artificial fertilizers include manure digestates. Another potential amendment method is the addition dredged bottom sediments from different water bodies. The use lake for purposes well-documented; however, surface-flow treatment wetlands (TWs) designed mitigate diffuse pollution remains largely unexplored. However, these are rich in...
Draining land from excess water is a common practice in forestry to accelerate tree growth, but it has significant environmental implications, particularly the case of peatland forests. Drainage exposes nutrient-rich peat soils oxygen, triggering decomposition and mineralization, which leads increased CO2 emissions soil leaching solids, organic matter, nutrients water. While accelerated growth may partially offset CO2emissions, unmanaged drainage ditches are possible hotspots for greenhouse...
Treatment wetlands are recognized as multifunctional ecosystems capable of treating agricultural runoffs. Yet, while their nutrient removal efficiency can be high, it also comes with elevated emissions greenhouse gases (GHGs), most importantly methane (CH4). Dense vegetation and availability nutrients make these water treatment systems into landscape-scale CH4 hotspots. Therefore, wetland management practices need to developed sustain reducing GHG emissions. Typha-dominated modulate...
Wetland restoration often aims to re-establish native vegetation and improve ecosystem functions, including greenhouse gas (GHG) regulation biodiversity support. This study compares a newly restored spruce plantation, where managed was recently removed encourage the return of species, with control site over decade earlier, natural functions have achieved greater stability. The objective assess how stages influence GHG fluxes associated soil conditions. Over one year, methane (CH 4 ) carbon...
Winter conditions present unique challenges to greenhouse gas dynamics as ecosystems experience altered processes and environmental parameters. This study investigates the wintertime gaseous carbon exchanges during harvesting of two wetland plants, Typha latifolia Phragmites australis, in three different locations South-eastern Estonia: a constructed with free water surface designed for treating agricultural runoff, natural lake, restored bog. Generally, show an increase both CH4-C CO2-C...
Climate change has brought more extreme and unexpected weather conditions that result in frequent storm events and longer drought periods are making agricultural production much harder. Efficient needs addition to favorable also sufficient amount of nutrients the soil. In ecological agriculture common alternatives artificial fertilizers manure digestates. The main role diffuse pollution control treatment wetlands (TWs) is mitigate contamination coming from fields. Captured organic...
Wetlands are significant contributors to global methane (CH4) emissions, a critical driver of climate change. However, the spatial heterogeneity CH4 fluxes and underlying mechanisms within these wetland ecosystems remains largely unexplored. This study examines emissions from different types wetlands in Estonia California, USA. The studied include free surface water treatment wetlands, recently restored peatlands three California that differ each other salinity level, tidal influence,...
Intact peatlands sequester and store substantial amounts of carbon over the long-term period. However, if these are drained for various purposes, e.g., peat mining, agricultural use, or forestry, they become significant greenhouse gas sources. In Estonia, there still large areas where extraction stopped decades ago, no restoration activities have been implemented. All Restoring such into wetlands may turn CO2 sources sinks mitigate climate change. remains considerable uncertainty as to...
Agricultural activities are the main cause of eutrophication waterbodies downstream farmed lands. Water protection measures such as treatment wetlands (TW) highly effective in reducing diffuse agricultural pollution and therefore reduce risk for eutrophication. This study presents a long-term (7-year period) overview well-established in-stream free water surface (FWS) TW system to agriculture temperate climate zone southern Estonia. The wetland consists two subsequent FWS TWs (W1 W2) with...