A5042899973- Mercury impact and mitigation studies
- Heavy metals in environment
- Toxic Organic Pollutants Impact
- Heavy Metal Exposure and Toxicity
- Freshwater macroinvertebrate diversity and ecology
- Peatlands and Wetlands Ecology
- Soil and Water Nutrient Dynamics
Universidade de Vigo
2019-2024
Departamento de Educación
2023
Institute of Environmental Assessment and Water Research
2023
Soils constitute the major reservoir of mercury (Hg) in terrestrial ecosystems, whose stability may be threatened by wildfires. This research attempts to look at effect prescribed fire on presence Hg a shrubland ecosystem from NE Portugal, delving into its relationship with soil aggregate size and molecular composition organic matter (SOM). During fire, average 347 mg ha-1 were lost burnt aboveground biomass shrubs 263 combustion horizon. Overall, concentration pools mineral did not show...
Forest areas are a primary sink of atmospheric mercury (Hg) within terrestrial ecosystems, whereas forest vegetation plays key role in Hg transfer to soil horizons. This study assessed variations total contents (HgT) and accumulation (HgRes) the organic horizons area NE Portugal, where post-wildfire afforestation led substitution native deciduous species (Quercus pyrenaica) by fast-growing coniferous (Pseudotsuga menziesii Pinus nigra). The also evaluated, for each species, links between...
Atmospheric mercury (Hg) is largely assimilated by vegetation and subsequently transferred to the soil litterfall, which highlights role of forests as one largest global Hg sinks within terrestrial ecosystems. We assessed pool in aboveground biomass (leaves, wood, bark, branches twigs), deposition flux through litterfall over two years (by sorting fallen leaves, twigs, reproductive structures miscellaneous) its accumulation profile a deciduous forest dominated Betula alba from SW Europe. The...
Soils are the main Hg reservoir in terrestrial ecosystems where it is deposited via wet or dry deposition and litterfall. Once on soil surface, different biogeochemical routes will determine fate of role as a source sink. The specific chemical physical characteristics Podzols podzolic soils contribute to accumulation their illuvial horizons, avoiding its leaching groundwater. geographical location, state pedogenesis, age, abundance carrier phases properties can affect presence distribution...
Climatic conditions have been shown as a major driver of the fate Hg in forest ecosystems at global scale, but less is known about climatic effects shorter scales. This study assesses whether concentration and pools soils collected from seventeen Pinus pinaster stands describing coastal-inland transect SW Europe vary along regional gradient. In each stand, samples organic subhorizons (OL, OF + OH) mineral soil (up to 40 cm) were some general physico-chemical properties total (THg) analyzed....
Atmospheric mercury (Hg) usually tends to accumulate in the upper horizons of soils. However, physico-chemical characteristics some soils, as well pedogenetic processes, past climate changes, or soil degradation can lead a redistribution through profile. In this work, presence and accumulation was studied three deep polycyclic soils from mountainous area NW Iberia Peninsula. The highest total Hg values (Hg T ) were found organic matter-rich O A FL MF profiles (169 139 μg kg −1 ,...