Impact of Parasitic Chytrids on Food Webs in Lake Pavin
Author Information
Author(s): Grami Boutheina, Rasconi Serena, Niquil Nathalie, Jobard Marlène, Saint-Béat Blanche, Sime-Ngando Télesphore
Primary Institution: Université de La Rochelle-CNRS, UMR 6250 Littoral Environnement et Sociétés (LIENSs), La Rochelle, France
Hypothesis
How do parasitic chytrids affect the structure and function of planktonic food webs during the spring diatom bloom?
Conclusion
Parasitic chytrids significantly enhance carbon transfer to higher trophic levels in the food web of Lake Pavin, reducing carbon loss through sedimentation.
Supporting Evidence
- Chytrids reduced the sedimentation loss of algal carbon by producing grazer-exploitable zoospores.
- Parasitism contributed to longer carbon path lengths and higher levels of activity in the food web.
- Chytrids increased the total system throughput and average pathway length in the food web model.
Takeaway
Chytrids are tiny fungi that help plankton eat more by turning inedible algae into food, making the whole food web work better.
Methodology
The study used a carbon-based food web model and linear inverse modeling to assess the impact of chytrids on carbon flows in Lake Pavin.
Potential Biases
Potential biases may arise from the modeling assumptions and the specific ecological context of Lake Pavin.
Limitations
The study is limited to a specific time frame and location, which may not represent other ecosystems.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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