A5050456579- Soil and Water Nutrient Dynamics
- Aquatic Ecosystems and Phytoplankton Dynamics
- Marine and coastal ecosystems
- Freshwater macroinvertebrate diversity and ecology
- Fish Ecology and Management Studies
- Peatlands and Wetlands Ecology
- Coastal wetland ecosystem dynamics
- Health and Medical Research Impacts
- Meta-analysis and systematic reviews
- scientometrics and bibliometrics research
- Microbial Community Ecology and Physiology
- Aquatic Invertebrate Ecology and Behavior
- Diatoms and Algae Research
- Cryospheric studies and observations
- Hydrology and Watershed Management Studies
- Climate change and permafrost
Aarhus University
2019-2024
Centre for Research on Ecology and Forestry Applications
2018-2023
Abstract Large variability in dissolved organic carbon (DOC) uptake rates has been reported for headwater streams, but the causes of this are still not well understood. Here we assessed acetate across 11 European streams comprising different ecoregions by using whole‐reach pulse additions. We evaluated main climatic and biogeochemical drivers during two seasonal periods. Our results show a minor influence sampling periods strong effect climate matter (DOM) composition on uptake. In...
Macrophytes provide essential ecosystem services in lowland streams, including nutrient uptake that can reduce downstream transport to vulnerable coastal areas. Despite that, ensure water conveyance and effective run off from agricultural fields, aquatic plant biomass is removed regularly many European streams (i.e. weed cutting practices). However, the impacts of on stream processes are not yet well documented. Here, we studied effect retention metabolism three with contrasting dominant...
Abstract The Arctic is warming and significant changes to the landscape, including increased vegetative cover (“greening”), are expected in near future. These landscape may alter nitrogen (N) availability terrestrial, stream, coastal ecosystems, where production often N limited, but exact nutrient cycling uncertain. Here, we analyzed relationship between vegetation greenness (i.e., NDVI) dissolved inorganic (DIN) organic (DON) concentrations streams draining 14 headwater catchments (mean 3.6...
Macrophytes are important structural and biologically active components in many lowland streams. Although the direct indirect roles of macrophytes on ecosystem structure function have been assessed, their concurrent influence whole-stream metabolism nutrient cycling, particularly during periods growth senescence, is less clear. In our study, we sought to quantify relationships between macrophyte phenology seasonal patterns stream function. We measured variables related biofilm abundance,...
Stream biofilms play an important role in the structure, functioning, and integrity of agricultural streams. In many lowland streams, macrophyte vegetation is abundant functions as substrate for biofilm (epiphyton) addition to gravel stone epilithon on stream bed. We expect that reach-scale habitat conditions streams (e.g., nutrient availability, hydraulic conditions) affect epiphyton biomass composition, this effect will be substrate-specific (macrophytes stones). The objectives our study...
Coordinated distributed experiments (CDEs) enable the study of large-scale ecological patterns in geographically dispersed areas, while simultaneously providing broad academic and personal benefits for participants. However, effective involvement early-career researchers (ECRs) presents major challenges. Here, we analyze challenges first CDE exclusively led conducted by ECRs (i.e. ECR-CDE), which sets a baseline similar CDEs, provide recommendations successful execution. ECR-CDEs achieve...
Abstract Seasonal compositional changes in plankton communities are usually considered as species replacements. Given the enormous number of individuals integrating and our limited capacity to count determine most them, we likely observe only alternative population peaks some coexisting species. The contemporary coexistence theory addresses competing species, considering relative fitness inequalities stabilising niche differences components average long‐term growth rates. Here,...
Abstract Planktonic communities are naturally subjected to episodic nutrient enrichments that may stress or redress the imbalances in limiting nutrients. Human‐enhanced atmospheric nitrogen deposition has caused profound N:P imbalance many remote oligotrophic lakes which phosphorus largely become limiting. These offer an opportunity investigate relationship between changes plankton stoichiometry, productivity, and community structure occurring during fluctuations P‐limited conditions. We...
Abstract Coordinated distributed experiments (CDEs) enable the study of large-scale ecological patterns in geographically dispersed areas, while simultaneously providing broad academic and personal benefits for participants. However, effective involvement early-career researchers (ECRs) presents major challenges. Here, we analyze challenges first CDE exclusively led conducted by ECRs (i.e. ECR-CDE), which sets a baseline similar CDEs, provide recommendations successful execution. ECR-CDEs...
Experimental nutrient additions are a fundamental approach to investigating plankton ecology. Possibilities range from whole-lake fertilization flask assays encompassing trade-off between closeness the "real world" and feasibility replication. Here we describe an enclosure type that minimizes manipulation of planktonic communities during filling. The (typically ~100 L volume) consists narrow translucent cylinder can comprise entire photic zone (or large part it in clear deep lakes, e.g. 20-m...
Macrophytes provide essential ecosystem services in low-land streams, including nutrient uptake that can reduce downstream transport to vulnerable coastal areas. Despite that, ensure water conveyance and effective run off from agricultural fields, aquatic plant biomass is removed regularly many European streams (i.e. weed cutting practice). However, the impacts of on stream processes are not yet well documented. Here, we studied effect retention metabolism three with contrasting dominant...
Photo 1: Ultraoligotrophic Lake Redon (Central Pyrenees Mountains, Spain) with the ENEX experimental enclosures deployed in central part. Limnological research this high-mountain lake (2232 m above sea level) has been ongoing for more than 30 years. credit: Pau Giménez-Grau. This photograph illustrates article “Homeostasis and non-linear shift stoichiometry of P-limited planktonic communities” by Giménez-Grau, Marisol Felip Aitziber Zufiaurre, Sergi Pla-Rabès, Lluís Camarero, Jordi Catalan...