Management options for the unfavorable nutrient balance of recreational fishing in Lake Balaton(Hungary)

作     者：Gergely Boros Attila Mozsár András Specziár 

作者机构：Balaton Limnological Research Institute–ELKHTihanyHungary Research Centre for Aquaculture and FisheriesInstitute of Aquaculture and Environmental SafetyHungarian University of Agriculture and Life ScienceSzarvasHungary 

出 版 物：《Ecosystem Health and Sustainability》 (生态系统健康与可持续性（英文）)

年 卷 期：2022年第8卷第1期

页      面：436-450页

核心收录：

学科分类：09[农学] 0903[农学-农业资源与环境] 

基　　金：This study was supported by the National Research,Development and Innovation Office of Hungary(under grant:RRF-2.3.1-21-2022-00008) by the Eötvös Lóránd Research Network(under grant:SA-29/2021) 

主　　题：Anthropogenic eutrophication boilie catchand-release fishing fish meal sustainable fisheries management 

摘      要：Various types of ground baits are loaded to lakes by anglers,but the ecological role of these materials is often ***,the aims of this study were to conduct a quantitative and qualitative assessment of the baits used by anglers in the largest lake of Central-Europe(Lake Balaton,Hungary),estimate the annual nutrient balance of recreational fishing,and relate the nutrient loading from this source to the total external *** study demonstrated that popular angler baits varied substantially in their nutrient contents and in their molar nitrogen to phosphorus(N:P)*** net nutrient balance of recreational fishing was+19.3 t total N year^(-1)and+5.2 t total P year^(-1),equivalent to 0.7%and 3.2%of the estimated total annual N and P loads,*** rate of nutrient loading may be doubled if the present trends continue:anglers will use 20%more bait with an even higher nutrient content and will also show higher propensity to release the fish after *** turn,sustainable nutrient balance of fisheries management could be achieved by limiting the anglers’bait use to 1.5 kg day^(-1)and restricting baits to those which have relatively low P(0.3%)and N(1.5%)contents.