Trophic state indicators are a better predictor of Florida bass condition compared to temperature in Florida’s freshwater bodies

作者: Ross Boucek , Christian Barrientos , Michael R Bush , David A Gandy , Kyle L Wilson

DOI: 10.1007/S10641-017-0635-9

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摘要: Forecasted increases in global temperatures will likely have profound effects on freshwater fishes. Overlaid increasing temperatures, human populations are expected to grow, which increase anthropogenic nutrient enrichment ecosystems. Florida (US) represents the equatorial range limit for many fishes, thus these species potentially at risk climate warming. Likewise, Florida’s population is aggressively expand, enrichment. In this study, we examined whether maximum water or trophic state indicators (a proxy enrichment) better explains variation Bass (Micropterus salmoides floridanus) condition across 23 different bodies distributed throughout state. lengths and weights, temperature, chlorophyll-α, total phosphorous (TP), nitrogen (TN) measures were collected late summer fall from 2010 2012. We described relationships between bass relative environmental measurements (temperature, indicators) lake-year combinations using linear non-linear regressions. found no significant relationship temperature (r2 = 0.01). However, that did predict 0.39–0.50). Though research needed more rigorously assess of rising condition, our results may suggest lake productivity currently an influential driver Bass. As such, management efforts should continue closely monitor manage quality potential waters, as appears be tied productivity.

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