@article{Goncalves2024,
Title = {Elevated Fungicide and Nutrient Concentrations Change Structure but not Function of Aquatic Microbial Communities.},
Author = {Goncalves, Sara and Feckler, Alexander and Pollitt, Annika and Baschien, Christiane and Michael, Julian and Schreiner, Verena C. and Zubrod, Jochen P. and Bundschuh, Mirco},
Editor = {},
Journal = {Environmental toxicology and chemistry},
Year = {2024},
Pages = {1300-1311},
Volume = {43},
Doi = {10.1002/etc.5863},
Abstract = {Leaf decomposition is a key process in stream ecosystems within forested catchments; it is driven by microbial
communities, particularly fungi and bacteria. These microorganisms make nutrients and energy bound in leaves available for
wider parts of the food web. Leaf‐associated microorganisms are subjected to anthropogenic pressures, such as the in-
creased exposure to nutrients and fungicides associated with land‐use change. We assessed the sensitivity of leaf‐associated
microbial communities with differing exposure histories, namely, from pristine (P) streams, and streams impacted by
wastewater (W) and agricultural run‐off (vineyards; V). In the laboratory, microbial communities were exposed to elevated
nutrient (NO3‐N: 0.2–18.0 mg/L, PO 4‐P: 0.02–1.8 mg/L) and fungicide concentrations (sum concentration 0–300 μg/L) in a fully
crossed 3 × 4 × 4‐factorial design over 21 days. Leaf decomposition and exoenzyme activity were measured as functional
endpoints, and fungal community composition and microbial abundance served as structural variables. Overall, leaf de-
composition did not differ between fungicide treatments or exposure histories. Nonetheless, substantial changes in the
fungal community composition were observed after exposure to environmentally relevant fungicide concentrations. Elevated
nutrient concentrations assisted leaf decomposition, and the effect size depended on the exposure history. The observed
changes in the fungal community composition support the principle of functional redundancy, with highly efficient de-
composers maintaining leaf decomposition.},
}
TY - JOUR
AU - Goncalves, Sara
AU - Feckler, Alexander
AU - Pollitt, Annika
AU - Baschien, Christiane
AU - Michael, Julian
AU - Schreiner, Verena C.
AU - Zubrod, Jochen P.
AU - Bundschuh, Mirco
TI - Elevated Fungicide and Nutrient Concentrations Change Structure but not Function of Aquatic Microbial Communities.
T2 - Environmental toxicology and chemistry
PY - 2024
SP - 1300-1311
VL - 43
DO - 10.1002/etc.5863
AB - Leaf decomposition is a key process in stream ecosystems within forested catchments; it is driven by microbial
communities, particularly fungi and bacteria. These microorganisms make nutrients and energy bound in leaves available for
wider parts of the food web. Leaf‐associated microorganisms are subjected to anthropogenic pressures, such as the in-
creased exposure to nutrients and fungicides associated with land‐use change. We assessed the sensitivity of leaf‐associated
microbial communities with differing exposure histories, namely, from pristine (P) streams, and streams impacted by
wastewater (W) and agricultural run‐off (vineyards; V). In the laboratory, microbial communities were exposed to elevated
nutrient (NO3‐N: 0.2–18.0 mg/L, PO 4‐P: 0.02–1.8 mg/L) and fungicide concentrations (sum concentration 0–300 μg/L) in a fully
crossed 3 × 4 × 4‐factorial design over 21 days. Leaf decomposition and exoenzyme activity were measured as functional
endpoints, and fungal community composition and microbial abundance served as structural variables. Overall, leaf de-
composition did not differ between fungicide treatments or exposure histories. Nonetheless, substantial changes in the
fungal community composition were observed after exposure to environmentally relevant fungicide concentrations. Elevated
nutrient concentrations assisted leaf decomposition, and the effect size depended on the exposure history. The observed
changes in the fungal community composition support the principle of functional redundancy, with highly efficient de-
composers maintaining leaf decomposition.
ER -
