WADFW PSAMP S1993

Original provider: Washington Department of Fish & Wildlife Abstract: The metadata edits are in progress. Please contact the contact person for detail. Aerial surveys of marine birds have been conducted annually since 1992 by the Puget Sound Ambient Monitoring Program (PSAMP) staff during both a summer (July) and a winter (December to early February) survey window, sampling some part of every portion of the marine shoreline of the inner marine waters of Washington state by two strata: nearshore (< 20 meters in depth) and offshore (> 20 meters in depth). The datasets are split by season (summer or winter) and year. Purpose: The purpose of this program is to monitor population trends of either summer or winter resident species rather than migrations around Puget Sound. Supplemental information: [2020-09-30] The following invalid species names were corrected according to the Integrated Taxonomic Information System (ITIS). Bonaparte's Gull: Larus philadelphia (176839) => Chroicocephalus philadelphia (824040) Caspian Tern: Sterna caspia (176924) => Hydroprogne caspia (176935) Anas oustaleti (202228) => Anas platyrhynchos (175063) Wandering Tattler: Heteroscelus incanus (176635) => Tringa incana (176630) Data correction Mar 17, 2006: Wrong ITIS number for Unidentified Sea Lion 180623 -> 180615 Data correction Mar 14, 2006: Wrong ITIS number for Unidentified [Large|Small] Gulls 180297 -> 176802 The nearshore strata were sampled in two fashions: 1)in nearshore habitat that was relatively narrow, the plane flew parallel to the shoreline generally 100 meters from the high tide line; 2)in nearshore habitat with broad extensive shallow areas such as river estuaries, the plane flew in an S-pattern to sample a larger proportion of the habitat available in that locality. The offshore strata were sampled in a crisscross pattern that zigzagged back and forth across depth contours, with an attempt made to cut across most all banks and similar major underwater bathymetric features. There was no attempt made to survey during the same tidal stage in these areas. The survey always began in the southernmost study areas and proceeded to the northern portions; therefore the same areas were usually sampled during the same time of month each year, give or take a week. The last two summer surveys (1997-98) did not include the southern and central portions of Puget Sound, due to budget cuts. These areas were chosen to be continued on a less frequent basis because low and consistent numbers of birds were seen there during the July survey window in the previous five summer surveys. Effort data is provided in separate files.原始提供方：华盛顿州鱼类与野生动物局（Washington Department of Fish & Wildlife） 摘要：元数据编辑工作正在进行中，详情请联系联络人。自1992年起，普吉特湾环境监测项目（Puget Sound Ambient Monitoring Program, PSAMP）工作人员每年开展两次海洋鸟类航空调查，分别于夏季（7月）与冬季（12月至次年2月初）的调查窗口期开展作业，通过两个分层对华盛顿州内海水域的全部海洋岸线区域进行采样：近岸分层（水深<20米）与远岸分层（水深>20米）。数据集按季节（夏季或冬季）与年份进行划分。 研究目的：本项目旨在监测夏季或冬季居留鸟类的种群数量变化趋势，而非普吉特湾周边的迁徙鸟类种群。 补充说明：[2020-09-30] 依据综合分类学信息系统（Integrated Taxonomic Information System, ITIS）对以下无效物种学名进行了修正： - 博纳氏鸥（Bonaparte's Gull）：原学名Larus philadelphia（ITIS编号176839）→ 修正为Chroicocephalus philadelphia（ITIS编号824040） - 红嘴巨鸥（Caspian Tern）：原学名Sterna caspia（ITIS编号176924）→ 修正为Hydroprogne caspia（ITIS编号176935） - 原学名Anas oustaleti（ITIS编号202228）→ 修正为绿头鸭（Anas platyrhynchos，ITIS编号175063） - 漂泊鹬（Wandering Tattler）：原学名Heteroscelus incanus（ITIS编号176635）→ 修正为Tringa incana（ITIS编号176630） 2006年3月17日数据修正：将未知海狮的错误ITIS编号180623修正为180615 2006年3月14日数据修正：将未知[大型|小型]鸥的错误ITIS编号180297修正为176802 近岸分层采用两种采样模式：① 对于相对狭窄的近岸生境，飞机沿平行于岸线的航线飞行，通常距离高潮线100米；② 对于拥有宽阔浅水区的近岸生境（如河流河口），飞机采用S型航线飞行，以覆盖该区域内更大比例的可用生境。 远岸分层采用纵横交错的锯齿状航线，沿等深线往返飞行，尽可能覆盖绝大多数浅滩及其他主要水下地形特征。本次调查未要求在相同潮汐阶段开展作业。 调查始终从最南端的研究区域启动，逐步向北推进；因此每年的相同区域通常在每月的同一时段开展采样，时间误差约为一周。 受预算削减影响，最近两次夏季调查（1997-1998年）未覆盖普吉特湾的南部与中部区域。由于在过往五次夏季调查的7月窗口期内，该区域观测到的鸟类数量始终较低且稳定，后续将以更低频率对这些区域进行采样。 调查工作量数据将在单独的文件中提供。