Morgan Botrel

Morgan Botrel
Université de Montréal | UdeM · Department of Biological Sciences

MSc

About

18
Publications
3,837
Reads
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83
Citations
Citations since 2017
16 Research Items
75 Citations
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Introduction
Morgan Botrel currently works at the Department of Biological Sciences, Université de Montréal. Morgan does research in Limnology and Ecology. Her most recent publication is 'Assimilation and nitrification in pelagic waters: insights using dual nitrate stable isotopes (δ15N, δ18O) in a shallow lake'.

Publications

Publications (18)
Article
Full-text available
Large rivers can retain a substantial amount of nitrogen (N), particularly in submerged aquatic vegetation (SAV) meadows that may act as disproportionate control points for N retention. However, the temporal variation of N retention in large rivers remains unknown since past measurements were snapshots in time. Using high‐frequency plants and NO3⁻...
Article
Increasing the overall use efficiency of nitrogen (N) and phosphorus (P) resources in food production while minimizing losses to the environment are required to meet the dual challenge of food security and sustainability. Yet studies quantifying the overall performance of different agro-system types and how these have changed over time remain rare,...
Preprint
Full-text available
Measuring freshwater submerged aquatic (SAV) biomass at large spatial scales is challenging and no single technique can cost effectively accomplish this while maintaining accuracy. We propose to combine and intercalibrate accurate quadrat-scuba diver technique, fast rake sampling and large scale echosounding. We found that the relationship between...
Article
Streams are important sites of elemental transformations due to the relatively high contact rates between flowing water and biogeochemically reactive sediments. Increased urbanization typically results in higher nutrient and carbon (C) inputs to streams from their watersheds and increased flow rates due to modification in channel form, reducing wit...
Article
Full-text available
Aquatic plants (macrophytes) are known to affect flow dynamics, contributing to flow resistance. Most studies on flow‐vegetation interactions are performed in laboratory flumes and focus on the flow field around plants, with little research at the level of vegetation patches in large aquatic ecosystems. In most hydrodynamic models, increased drag d...
Article
Full-text available
We investigated the variability in ammonia oxidation (AO) rates and the presence of ammonia-oxidizing archaea and bacteria (AOB and AOA) over an annual cycle in the water column of a small, seasonnally ice covered, temperate shield lake. AO, the first step of nitrification, was measured in situ using ¹⁵N-labelled ammonium (NH4⁺) at 1% and 10% of ph...
Data
Depth interpolated monthly variation in water temperature and dissolved oxygen. (DOCX)
Data
Boxplot of seasonal delta N2O variation for the nitrification project. (DOCX)
Data
Supplementary methods. Additional informations on DNA extraction, PCR amplification, sequencing and phylogenetic analysis. (DOCX)
Data
Variation in NH4+, NO3-, N2O and chl a concentrations from lake sentinel bottom waters. (DOCX)
Data
Informations on ammonia oxidation rates assays. (DOCX)
Data
Simple linear regressions between ammonia oxidation rates and environmental variables. (DOCX)
Data
Dataset for the lake sentinel project. (CSV)
Article
Full-text available
Nitrate dual stable isotopes (δ¹⁵N and δ¹⁸O of NO3⁻) have proven to be a powerful technique to elucidate nitrogen (N) cycling pathways in aquatic systems. We applied this technique for the first time in the pelagic zone of a small temperate meso-eutrophic lake to identify the dominant N cycling pathways, and their spatial and temporal variability....
Article
Full-text available
Pronounced climate warming during the past century has been well documented in high-latitude regions. Nonetheless, considerable heterogeneity exists in northern climate trends. We examined the roles of cryospheric landscape and lake depth in modulating the rate and magnitude of local climate responses through a paleolimnological study of lakes from...
Article
Full-text available
The nitrogen stable isotopic signature (d 15 N) of sediment is a powerful tool to understand eutrophication history, but its interpretation remains a challenge. In a large-scale comparative approach, we identified the most important drivers influencing surface sediments d 15 N of 65 lakes from two regions of Canada using proxies that reflect waters...

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