Annual changes in water quality and sportfish community structure following commercial harvest of common carp and bigmouth buffalo

IF 1.1 4区环境科学与生态学 Q4 LIMNOLOGY Lake and Reservoir Management Pub Date : 2023-04-03 DOI:10.1080/10402381.2023.2209780

Martin A. Simonson, Michael J. Weber, G. Wilkinson, Andrew R. Annear

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Abstract

Abstract Martin A. Simonson, Michael J. Weber, Grace M. Wilkinson and Andrew R. Annear. 2023. Annual changes in water quality and sportfish community structure following commercial harvest of common carp and bigmouth buffalo. Lake Reserv Manage. 39:174–189. Commercial harvest of common carp (Cyprinus carpio; hereafter carp) and bigmouth buffalo (Ictiobus cyprinellus; hereafter buffalo) populations had little detectable effect on shallow lake ecosystems. We tested whether carp and buffalo biomass removal affects limnological variables and fish community metrics across 6 shallow, natural lakes of northwestern Iowa using mixed effects models. Annual commercial harvest of carp ranged from 0 to 71 kg/ha; annual harvest of buffalo ranged from 0 to 356 kg/ha. Biomanipulation (i.e., commercial harvest) of carp was associated with decreases in soluble phosphorus and nitrogen concentrations, but not total phosphorus or nitrogen. Buffalo harvest was unrelated to annual changes in nutrient concentrations but was associated with reductions in chlorophyll a and phycocyanin concentrations. Secchi disk transparency and total suspended solids were unrelated to carp and buffalo harvest. Carp harvest was associated with reduced biomass of large cladocerans but no other zooplankton biomass densities; buffalo harvest was unrelated to zooplankton biomass. Species richness and rake density of aquatic macrophytes were unrelated to carp and buffalo harvest. Carp and buffalo harvest was unrelated to changes in most indices of sportfish abundance, condition, and size distribution. Our results suggest harvest of carp and buffalo <71 kg/ha has little effect on abiotic and biotic ecosystem components on short time scales and highlights the challenges associated with shallow lake restoration.

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鲤鱼和大嘴水牛商业捕捞后水质和运动鱼类群落结构的年变化

[摘要]Martin A. Simonson, Michael J. Weber, Grace M. Wilkinson, Andrew R. Annear。2023。鲤鱼和大嘴水牛商业捕捞后水质和运动鱼类群落结构的年变化。湖泊保护区管理。39:174-189。鲤鱼(Cyprinus carpio;鲤鱼)和大嘴水牛(cyprinellus;此后，野牛的数量对浅湖生态系统的影响微乎其微。我们使用混合效应模型测试了鲤鱼和水牛生物量去除是否会影响爱荷华州西北部6个浅天然湖泊的湖泊变量和鱼类群落指标。鲤鱼年商业捕获量为0 ~ 71公斤/公顷;水牛的年收获量为0至356公斤/公顷。鲤鱼的生物操作(即商业捕捞)与可溶性磷和氮浓度的降低有关，但与总磷和总氮无关。水牛收获与养分浓度的年变化无关，但与叶绿素a和藻蓝蛋白浓度的降低有关。塞奇圆盘透明度和总悬浮固体与鲤鱼和水牛的收获无关。鲤鱼捕捞与大型枝海动物生物量减少有关，但与其他浮游动物生物量密度无关;水牛的收成与浮游动物生物量无关。水生植物的物种丰富度和耙密度与鲤鱼和水牛的收获无关。鲤鱼和水牛的收获量与大多数运动鱼丰度、状况和大小分布指数的变化无关。研究结果表明，在短时间尺度上，鲤鱼和水牛的收获量<71 kg/ha对非生物和生物生态系统的组成影响不大，并突出了浅湖恢复所面临的挑战。

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Lake and Reservoir Management 环境科学-海洋与淡水生物学

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6.70%

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期刊介绍： Lake and Reservoir Management (LRM) publishes original, previously unpublished studies relevant to lake and reservoir management. Papers address the management of lakes and reservoirs, their watersheds and tributaries, along with the limnology and ecology needed for sound management of these systems. Case studies that advance the science of lake management or confirm important management concepts are appropriate as long as there is clearly described management significance. Papers on economic, social, regulatory and policy aspects of lake management are also welcome with appropriate supporting data and management implications. Literature syntheses and papers developing a conceptual foundation of lake and watershed ecology will be considered for publication, but there needs to be clear emphasis on management implications. Modeling papers will be considered where the model is properly verified but it is also highly preferable that management based on the model has been taken and results have been documented. Application of known models to yet another system without a clear advance in resultant management are unlikely to be accepted. Shorter notes that convey important early results of long-term studies or provide data relating to causative agents or management approaches that warrant further study are acceptable even if the story is not yet complete. All submissions are subject to peer review to assure relevance and reliability for management application.