Margot SeppICRA Catalan Institute for Water Research | ICRA · Resources and Ecosystems Research Group
Margot Sepp
Doctor of Philosophy
About
19
Publications
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Introduction
I am a postdoctoral researcher in aquatic ecology at the Catalan Institute for Water Research (ICRA). I am currently investigating how global climate change is altering carbon cycling related ecosystem functions (primary production, ecosystem respiration, organic matter decomposition, and greenhouse gas emissions) and ecosystem services provision in river networks. I have a PhD in Applied Biology and my previous research has focused on organic matter and nitrogen and phosphorus cycling in lakes.
Additional affiliations
January 2020 - present
Education
September 2014 - May 2019
Publications
Publications (19)
More than half of the world’s rivers experience occasional, seasonal, or permanent drying, and this may increase because of climate change. Drying, i.e. severe reduction in water flow even leading to streambed desiccation, can have a profound impact on the available aquatic habitat, biodiversity, and functions of rivers. Yet, to date, it is unclear...
As a result of natural and anthropogenic eutrophication, shallow lakes ultimately become wetlands. Several aquatic ecosystem values diminish, but some biotic communities may benefit. Lake Lahepera is a very shallow lake filled with sediments and overgrown with macrophytes. It is a former bay and an important spawning ground for fishes of Lake Peips...
Dissolved organic matter (DOM) plays an important role in biogeochemistry of lake ecosystems. Studies measuring DOM at short intervals in lakes are still rare, thus its short-term dynamics are largely unknown. We investigated DOM temporal variation in large and shallow eutrophic Lake Võrtsjärv (Estonia) during one growing season (May–September 2016...
Extreme environments are inhospitable to the majority of species, but some organisms are able to survive in such hostile conditions due to evolutionary adaptations. For example, modern bony fishes have colonized various aquatic environments, including perpetually dark, hypoxic, hypersaline and toxic habitats. Eurasian perch (Perca fluviatilis) is a...
Allochthonous supply of dissolved organic matter (DOM) and nutrients from the catchment have a substantial
impact on the physical and chemical properties of lake water. Transport of DOM and nutrients is affected
by different catchment characteristics, e.g., catchment area, soil and land cover, and population density. The aim of
this study was to re...
Extreme environments are inhospitable to the majority of species, but some organisms are able to survive in such hostile conditions due to evolutionary adaptations. For example, modern bony fishes have colonized various aquatic environments, including perpetually dark, hypoxic, hypersaline and toxic habitats. Eurasian perch (Perca fluviatilis) is a...
Pelagic calcification shapes the carbon budget of lakes and the sensitivity of dissolved inorganic carbon (DIC) responses to lake metabolism. This process, being tightly linked to primary production, needs to be understood within the context of summer eutrophication which is increasing due to human stressors and global change. Most lake carbon budg...
Background:
Next generation sequencing (NGS) technologies are extensively used to dissect the molecular mechanisms of host-parasite interactions in human pathogens. However, ecological studies have yet to fully exploit the power of NGS as a rich source for formulating and testing new hypotheses.
Methods:
We studied Eurasian perch (Perca fluviati...
Background
Next generation sequencing (NGS) technologies are extensively used to dissect the molecular mechanisms of host-parasite interactions in human pathogens. However, ecological studies have yet to fully exploit the power of NGS as a rich source for formulating and testing new hypotheses.
Methods
We studied Eurasian perch (Perca fluviatilis)...
Background Next generation sequencing (NGS) technologies are extensively used to dissect the molecular mechanisms of host-parasite interactions in human pathogens. However, ecological studies have yet to fully exploit the power of NGS as a rich source for formulating and testing new hypotheses.
Methods We studied Eurasian perch (Perca fluviatilis)...
Background: Next generation sequencing (NGS) technologies are extensively used to dissect the molecular mechanisms of host-parasite interactions in human pathogens. However, ecological studies have yet to fully exploit the power of NGS as a rich source for formulating and testing new hypotheses.
Methods: We studied Eurasian perch (Perca fluviatilis...
We calculated the allochthonous organic carbon (OC) mass balance for thirteen natural lakes using lake water budget, catchment features and water column chemistry variables as input of a process-based model. Parameter distribution and uncertainty of model outputs were assessed within a Bayesian framework.
We assessed the allochthonous organic carbon (OC) budgets for thirteen hemiboreal lakes using a simple equilibrium model coupled with a Bayesian framework for estimating parameter distribution and uncertainty. Model inputs consisted of hydrological, bathymetric and chemical data that are easily measurable at the lake and basin scale. Among the mode...
Dissolved organic matter (DOM) is a critical component in freshwater ecosystem functioning. The main sources of DOM in lakes are allochthonous inputs from the catchment and autochthonous in-lake production. This study focused on the role of catchment characteristics on the qualitative and quantitative properties of DOM in small temperate lakes alon...
Theoretical pelagic primary production of phytoplankton and benthic primary production of periphyton were modelled for two small lakes in Estonia (Northeast Europe). Although located only 500 m apart, the water colour and light attenuation of these two lakes differed markedly. The Secchi depth (SD) in the clear‐water lake was 4.5 m and only 0.47 m...
Organic matter (OM) has numerous geochemical and ecological functions in inland waters and can affect water quality. Different parameters of aquatic OM are measured with various methods as no single analytical tool can provide definitive structural or functional information about it. In the present paper we review different OM metrics used in the E...
Pelagic primary production of phytoplankton and benthic primary production of periphyton were modelled in two small lakes of Estonia (north-east Europe). Although located only 500 m apart from each other, the water color and light attenuation of these two lakes differed markedly. Secchi depth in the clear-water lake was 4.5 and only 0.5 m in the da...
The importance of lakes and reservoirs leads to the high need for monitoring lake water
quality both at local and global scales. The aim of the study was to test suitability of Sentinel-2 Multispectral Imager’s (MSI) data for mapping different lake water quality parameters. In situ data of chlorophyll a (Chl a), water color, colored dissolved organ...