Characterization of fish assemblages in eleven multi-use reservoirs from North Carolina, USA
نویسندگان
چکیده
Managing impounded river systems is a recurring challenge for aquatic resource professionals because reservoirs serve multiple functions with different ecological and socioeconomic outcomes. However, research on fishes in has disproportionally focused recreationally economically important species, less attention directed toward fish assemblages despite the potential management at assemblage level. As such, evaluation of relationships between reservoir biotic abiotic factors testing whether structure affected by changing environmental conditions may deepen understanding provide insights fisheries management. Our overall objective was to assess these 11 from North Carolina, USA. We sampled reservoirs, which spanned five basins representing range habitat conditions, using experimental gillnets pulsed DC nighttime electrofishing. Multivariate statistical analyses indicated that taxonomic differences composition among followed gradient productivity. The top contributing species dissimilarity were bluegill (Lepomis macrochirus), gizzard shad (Dorosoma cepedianum), black crappie (Pomoxis nigromaculatus), white perch (Morone americana). These four positively associated reflect increasing eutrophic could, therefore, as indicators productivity, anthropogenic influence, structure, addition their key role Whereas fisheries historically assessing populations, our results illustrate derived simultaneously collecting assemblage- population-level data. Research relation help advance ecology alike.
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ژورنال
عنوان ژورنال: Journal of Freshwater Ecology
سال: 2023
ISSN: ['2156-6941', '0270-5060']
DOI: https://doi.org/10.1080/02705060.2023.2241494