Table A2

Citizen scientists collected data on anthropogenic and natural disturbances for lakes observed in the five sub-regions of Southcentral Alaska; Anchorage, Joint Base Elmendorf-Richardson (JBER), Kenai Peninsula (Kenai), Matanuska-Susitna Valley (Mat-Su) and Outlying, 1985-2015. Anthropogenic disturbances include: swimming, fishing, non-motor craft, motor boats, jet skis, float planes and dogs. Natural disturbances include: eagles, mammals and flooding. Disturbance is summarized by frequency of occurrence; daily, weekly, monthly, occasionally or never occurred. A metadata (data dictionary) file is included in this data file.

1985年至2015年间，公民科学家收集了阿拉斯加中南部五个子区域——安克雷奇、埃尔门多夫-理查德森联合基地（JBER）、基奈半岛、马塔努斯卡-苏西特纳谷（Mat-Su）以及外围区域——内所观测湖泊的人为与自然干扰数据。人为干扰类型包括：游泳、垂钓、非机动船只活动、摩托艇、水上摩托、水上飞机起降以及犬只活动。自然干扰类型包括：鹰类活动、哺乳动物活动与洪水。干扰情况按发生频次进行汇总分类，分为每日发生、每周发生、每月发生、偶发或未发生。本数据集附带元数据（metadata，数据字典）文件。