Publications by authors named "Nicolas Hette Tronquart"
The continuous increase of anthropogenic activities reinforces their stress on aquatic ecosystems (from continental to marine ecosystems) that are the most altered ecosystems on Earth. To evaluate the risk of ecosystem decline toward human alterations, the concept of "ecological vulnerability" was developed to help managers to prioritize conservation actions. Various definitions of vulnerability and its components were used, but this concept is often centered on the intersection of three components: sensitivity, exposition, and adaptive capacity.
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- Streams are impacted by land use, and this study explores how these effects vary at local and regional scales, focusing on the biological integrity of stream ecosystems.
- The research was conducted in 17 contrasting land use sites along a tributary of the Seine River, employing stable isotope analysis to assess food web dynamics, particularly in relation to fish communities.
- Findings indicate that local land use impacts food webs significantly through resource availability and biological interactions, while regional land use shows minimal influence on stream ecology, emphasizing the importance of riparian zones as protective buffers.
Rationale: Dorsal white muscle is the standard tissue analysed in fish trophic studies using stable isotope analyses. However, sampling white muscle often implies the sacrifice of fish. Thus, we examined whether the non-lethal sampling of fin tissue can substitute muscle sampling in food web studies.
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