WADFW PSAMP W1999

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) Anas oustaleti (202228) => Anas platyrhynchos (175063) 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）两个调查周期内实施。本次调查采用近岸层（水深＜20米）与远海层（水深＞20米）两个分层采样方案，覆盖华盛顿州内海水域的全部海岸带区域。数据集按季节（夏季/冬季）与年份进行划分。
调查目的：本项目旨在监测夏季或冬季居留鸟类的种群动态趋势，而非普吉特湾周边的迁徙鸟类。
补充信息：
[2020-09-30] 依据综合分类学信息系统（Integrated Taxonomic Information System, ITIS）修正了以下无效物种学名：
1. 博纳氏鸥（Bonaparte's Gull）：Larus philadelphia (176839) → Chroicocephalus philadelphia (824040)
2. Anas oustaleti (202228) → Anas platyrhynchos (175063)
2006年3月17日数据修正：未识别海狮的ITIS编号由180623更正为180615
2006年3月14日数据修正：未识别[大型|小型]鸥类的ITIS编号由180297更正为176802
近岸分层采用两种采样模式：1）对于狭窄近岸生境，飞机沿平行于海岸线的航线飞行，通常距离高潮线100米；2）对于拥有广阔浅水区的近岸生境（如河流河口），飞机采用S型航线飞行，以更大比例覆盖该区域内的可用生境。远海分层采用交叉锯齿状航线，沿等深线往返飞行，尽可能覆盖绝大多数岸堤及其他主要水下地形特征。本次调查未要求统一潮汐阶段。调查始终从最南端的研究区域启动，向北逐步推进；因此每年相同区域的采样时间通常处于每月的同一时段，误差不超过一周。受预算削减影响，1997年与1998年的最后两次夏季调查未覆盖普吉特湾南部与中部区域。鉴于此前五次夏季调查（7月周期）中该区域的鸟类数量始终偏低且稳定，后续改为低频度采样。采样工作量数据将在单独文件中提供。