Department of Forest and Natural Resources Management, SUNY College of Environmental Science and Forestry , 1 Forestry Drive, Syracuse, New York 13210, United States.
Family Forest Research Center, University of Massachusetts Amherst , 160 Holdsworth Way, Amherst, Massachusetts 01003, United States.
Environ Sci Technol. 2017 Jan 3;51(1):742-750. doi: 10.1021/acs.est.6b05274. Epub 2016 Dec 14.
We estimated the potential economic value of recreational fisheries in lakes altered by acid pollution in the Adirondack Mountains (USA). We found that the expected value of recreational fisheries has been diminished because of acid deposition but may improve as lakes recover from acidification under low emissions scenarios combined with fish stocking. Fishery value increased with lake pH, from a low of $4.41 angler day in lakes with pH < 4.5, to a high of $38.40 angler day in lakes with pH > 6.5 that were stocked with trout species. Stocking increased the expected fishery value by an average of $11.50 angler day across the entire pH range of the lakes studied. Simulating the future long-term trajectory of a subset of lakes, we found that pH and expected fishery value increased over time in all future emissions scenarios. Differences in estimated value among pollution reduction scenarios were small (<$1 angler day) compared to fish stocking scenarios (>$4 angler day). Our work provides a basis for assessing the costs and benefits of emissions reductions and management efforts that can hasten recovery of the economic and cultural benefits of ecosystems degraded by chronic pollution.
我们评估了阿迪朗达克山脉（美国）受酸化污染影响的湖泊中娱乐性渔业的潜在经济价值。我们发现，由于酸沉降，娱乐性渔业的预期价值已经减少，但随着湖泊在低排放情景下从酸化中恢复，以及结合鱼类放养，这种价值可能会增加。渔业价值随湖泊 pH 值的增加而增加，在 pH 值 < 4.5 的湖泊中，钓鱼者每天的预期价值最低为 4.41 美元，在 pH 值 > 6.5 的湖泊中，放养了鳟鱼等鱼类，每天的预期价值最高可达 38.40 美元。放养鱼类平均使整个湖泊研究 pH 值范围内的预期渔业价值增加了 11.50 美元。通过模拟一组湖泊的未来长期轨迹，我们发现，在所有未来的排放情景下，pH 值和预期渔业价值随着时间的推移而增加。与鱼类放养情景（>$4 angler day）相比，减少污染的情景（<$1 angler day）之间的估计价值差异较小。我们的工作为评估减缓慢性污染导致的生态系统退化的经济和文化效益的恢复的排放减少和管理工作的成本和效益提供了基础。
