#8205. Characteristics of the natural flow regime paradigm explain occurrence of imperiled Great Plains fishes

October 2026publication date
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4 total number of authors per manuscript0 $

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Journal’s subject area:
Ecology, Evolution, Behavior and Systematics;
Ecology;
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Abstract:
The natural flow regime (NFR) paradigm posits that naturally occurring temporal fluctuations in streamflow are necessary for maintaining natural ecological communities. Conservation actions guided by the paradigm have contributed to stream organism conservation on a global scale, yet NFR applications in highly altered Great Plains streams are lacking. We analyzed historical (1980–20XX) fish occurrence and flow data from sixteen gage locations across three Great Plains river basins with the goal of relating flow indices calculated for one year prior to each fish collection with the occurrence of fishes belonging to the highly imperiled pelagic-broadcast spawning (PBS) reproductive guild. We fit random forest models using flow indices, gage identification, and watershed area as predictor variables and PBS fish occurrence as the response variable for all suspected or confirmed PBS fishes in each basin.
Keywords:
aquatic biodiversity; conservation biology; environmental flows; flow alteration; freshwater ecology

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