Laimdota Truus

• MS
• Researcher at Tallinn University

This handbook presents the summary of the results of GHG assessment of the project LIFE Peat Restore ("Reduction of CO2 emissions by restoring degraded peatlands in Northern European Lowland") and provides an overview of possible ways how evaluate GHG emissions from peatlands. Additionally the handbook includes an Updated GEST catalogue (Annex 3) a...

The book was prepared and printed with the financial support of the European Commission’s LIFE programme within the project “Reduction of CO2 emissions by restoring degraded peatlands in Northern European Lowland” (LIFE15 CCM/DE/000138, LIFE Peat Restore). It reflects the experiences of the implementing organizations about the peatland restoration...

Milled peatlands in the Northern Hemisphere are frequently restored in order to mitigate negative effects of climate change and to benefit biodiversity. The aims of this study are to analyse the development of vegetation on milled peatlands in Estonia after restoration using the moss layer transfer technique (MLTT), relate the plant functional type...

The number and the area of former milled peatlands under restoration have increased rapidly in the Northern Hemisphere in recent decades with the primary aim of promoting peat accumulation. However, the application of similar restoration techniques across different sites does not always lead to desired results, and some site‐specific modifications...

This chapter presents the delineation approach and results of status assessment of Estonian wetlands for implementation of the objectives of the Water Framework Directive (WFD). Determination of WFD important wetlands based on selection and visualisation of wetlands soils from Estonian electronic soil map (data of Estonian Land Board), and correspo...

We are presenting first data on application of GEST approach in Baltics (Lithuania, Latvia, Estonia): vegetation mapping results with identified and described GEST vegetation types in three different pilot peatlands. All peatlands show different disturbance rates (from slightly drained fen and raised bog to totally drained, cutaway and left for spo...

Climate The formation of the heaths on the islands of N Estonia has been favoured by harsher climatic conditions compared to the mainland. The annual mean temperature in the region varies from 5.4 0 (in the west) to 4.6 0 C (in the east). Springs are cooler (3.0 0 C in April) but autumns are warmer (2.5 0 C in November) than on the mainland. The am...

The aeolian landscape comprising sandy beach and dunes is a highly dynamic and fragile system in the coastal area. Land uplift at Estonian coasts has created a series of different landforms. Most of the coastal area of Estonia emerged from the regressive sea in different phases of the Limnea Sea. These coasts had a deficiency of sediment drift and...

We examined the relationship between the composition and structure of vegetation and hydrology and microtopography within the Paraspõllu calcareous-rich fen (North Estonia). Species composition, depth to groundwater level (+ 6 to – 40 cm), pH (6.1–7.1), and electrical conductivity (220–840 µS cm –1) were recorded in 23 relevés of 1 m 2 along transe...

We studied vegetation diversity and standing biomass in relation to site moisture (moist, wet) and different management regimes (regularly mown (A), recently abandoned (B), un-mown for at least 15 years but with mowing re-introduced recently (C), and abandoned for at least 15 years without re-introduction of mowing (D)) on floodplain grasslands in...

This paper presents an integrated analysis of organic carbon (C) pools in soils and vegetation, within-ecosystem fluxes and net ecosystem exchange (NEE) in three 40-year old Norway spruce stands along a north-south climatic gradient in Sweden, measured 2001–2004. A process-orientated ecosystem model (CoupModel), previously parameterised on a region...

In the study reported here we examined the short-term effects (1–3 years) of slash retention (SR) and the long-term effects (13–15 years) of wood-ash application (A) on fine roots and mycorrhizae in a 40-year-old Norway spruce forest in southwest Sweden. Soil cores were used to obtain estimates of the biomass (g m−2) of roots in three diameter clas...

Biomass allocation and growth of Scots pine, Pinus sylvestris L., of various sizes (height 0.03–20 m) and ages (1–151 years) were investigated in two infertile sites (raised bog and sand dunes) to determine relative nitrogen and phosphorus limitations on productivity and their interactions and size-dependent controls. Dry mass weighted average nitr...

Adjustment of shoot architectural characteristics—needle angle with respect to shoot axis (α), needle mass per unit shoot silhouette area (MS), needle number per unit shoot axis length (KL), silhouette to total needle area ratio (SS)—to seasonal average daily integrated quantum flux density (Qint) was investigated in conifer Pinus sylvestris L. in...

Young trees 0.03-1.7 m high of three coexisting Betula species were investigated in four sites of varying soil fertility, but all in full daylight, to separate nutrient and plant size controls on leaf dry mass per unit area (MA), light-saturated foliar photosynthetic electron transport rate (J) and the fraction of plant biomass in foliage (F(L)). B...

Proc. Of the Estonian Acad. Of Sci. Biol./Ecol., nr. 47, 58-71

European wet graddlands. Biodiversity, management and restoration. Joyce, C.B., Wade, P.M. (eds.), 49-60

76th Yearbook of the Estonian Naturalists Society, K.Peterson (ed.), 137-163 There are about 100 islands in the territorial waters of Estonia in the Gulf of Finland. The majority of them belongs to the landscape region of the North - Estonian coastal lowland (Varep, 1964) and to the correspondent geobotanical tegion of the northen maritime Estonia...

Pakri saared - loodus ja inimtegevus Toim. Miidel A.. Eesti Teaduste Akadeemia Kirjastus, 34-38 The human impact on the vegetation of Pakri islands started already in 13. Century by felling the forest for fields and grasslands for hay making. Geobotanical overwiew of moss and vascular plant species for different habitats are given. Publishing place...