WADFW PSAMP S1992

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)

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部

摘要：自1992年起，由普吉特湾环境监测计划（PSAMP）的工作人员在夏季（7月）和冬季（12月至2月初）的调查窗口内，每年进行海洋鸟类空中调查。该调查覆盖华盛顿州内海水域海洋岸线的各个部分，通过两个层级进行采样：近岸层（<20米深度）和远岸层（>20米深度）。数据集按照季节（夏季或冬季）和年份进行划分。

目的：本计划旨在监测夏季或冬季栖息地物种的种群趋势，而非普吉特湾地区的迁徙活动。

补充信息：[2020-09-30] 根据综合分类信息系统（ITIS）进行了以下物种名称的更正。

波旁企鹅：Larus philadelphia (176839) → Chroicocephalus philadelphia (824040)

里海燕鸥：Sterna caspia (176924) → Hydroprogne caspia (176935)

Anas oustaleti (202228) → Anas platyrhynchos (175063)

数据更正（2006年3月14日）：未识别[大|小]企鹅的ITIS编号错误：180297 → 176802

在近岸层，采样方式有两种：
1) 在相对较窄的近岸栖息地中，飞机通常沿着高潮线飞行，距离海岸线100米；
2) 在宽阔的浅水区域，如河流三角洲，飞机以S形路线飞行，以采样该地区可利用栖息地的大部分。
远岸层则以交错模式进行采样，沿着深度等值线来回穿梭，尝试穿越大部分海岸线和类似的主要水下地形特征。在这些区域，并未试图在同一潮汐阶段进行调查。
调查始终从最南端的调查区域开始，向北推进；因此，每年同一时间通常会对相同的区域进行采样，误差在一周以内。最后两次夏季调查（1997-98年）未包括普吉特湾的南部和中部地区，这是由于预算削减所致。这些地区被选择以较低频率继续进行，因为在之前的五个夏季调查中，7月调查窗口期间在这些地区观察到的鸟类数量低且稳定。
努力数据提供在单独的文件中。