2010 osprey nest and 2011 osprey productivity observations from nests in Louisiana, Alabama, Mississippi, and Florida

The focus of this data posting is 2010 osprey nest and 2011 osprey productivity observations conducted by air and by ground-based observers working nest, and provides additional context for the collection, analysis, and organization of the data. Characteristics of this dataset include the following: ï‚§ï€ This dataset focuses on data related to 2010 osprey nest status and 2011 osprey productivity collected as part of the cooperative NRDA process. ï‚§ï€ This dataset includes data collected cooperatively with the Trustees. ï‚§ï€ Before posting, extensive work was done by BP contractors to verify some aspects of the posted data (e.g., positional coordinates and field data). Observations were made from December 2010 through July 2011 under a Work Plan titled Preassessment of Injury to Osprey from the Deepwater Horizon (MC 252) Oil Spill (Bird Study #9). This work was conducted as part of NRDA studies agreed to and executed cooperatively by the U.S. Fish and Wildlife Service (USFWS), other Trustees, and BP. This dataset includes data associated with osprey nest observation data collected by observers in aircraft and osprey productivity observations made by ground-based teams. The following types of data are included in the dataset: ï‚§ï€ Productivity observations made by aircraft-based observers include nest location, nest substrate, nest lining, nest condition, and whether the nest was or was not occupied at the time of observation. Overflights were conducted in both the Area of Potential Impact (API) and the Reference Area (as defined in the work plan) in December 2010 and March 2011. ï‚§ï€ Productivity observations made by ground-based teams include nest location, nest substrate, nest lining, nest condition, occupancy, presence or absence of oil on nest substrate under the visual light spectrum, counts of eggs, chicks, adults, and juveniles, and an estimate of chick age. In the API, productivity observations were made at approximately 100 nests between March and August of 2011. In the Reference Area, productivity observations were made at 13 nests in February 2011. ï‚§ï€ Fluorescence of material inside osprey nests was evaluated independently by Trustees in conjunction with 2011 ground-based productivity observations to attempt to assess the presence of hydrocarbons. In addition to those noted above, sampling variations may exist across observers, methods, locations, and times.本数据集发布的核心内容为2010年鹗（Osprey）巢址观测与2011年鹗繁殖力观测，观测工作由航空观测员与地面巢址观测团队共同完成，同时本数据集补充了该数据的采集、分析与整理相关背景信息。本数据集的特征如下： • 本数据集聚焦于合作性自然资源损害评估（NRDA）流程中采集的2010年鹗巢址状况与2011年鹗繁殖力相关数据。 • 本数据集包含与受托人（Trustees）合作采集的数据。 • 本数据集发布前，英国石油公司（BP）承包商已开展大量工作，对发布数据的部分内容（如位置坐标与野外采集数据）进行核验。本次观测工作于2010年12月至2011年7月期间开展，依据名为《深水地平线（MC 252）溢油对鹗造成损害的预评估（鸟类研究第9号）》的工作计划执行。该工作是由美国鱼类及野生动物管理局（U.S. Fish and Wildlife Service, USFWS）、其他受托人以及英国石油公司（BP）合作商定并实施的NRDA研究项目的一部分。 本数据集包含航空观测员采集的鹗巢址观测数据，以及地面团队开展的鹗繁殖力观测数据。数据集涵盖以下类型的数据： • 航空观测员开展的繁殖力观测内容包括：巢址位置、巢址基底、巢内衬材质、巢体状况，以及观测时巢是否被占用。2010年12月与2011年3月，研究团队分别在潜在影响区域（Area of Potential Impact, API）与参照区域（Reference Area，按工作计划中的定义划定）开展了航空飞越观测。 • 地面团队开展的繁殖力观测内容包括：巢址位置、巢址基底、巢内衬材质、巢体状况、占用情况、可见光波段下巢址基底是否存在油污、卵、雏鸟、成鸟与亚成鸟的数量统计，以及雏鸟年龄估算。2011年3月至8月期间，研究团队在潜在影响区域（API）内对约100个鹗巢开展了繁殖力观测；2011年2月，在参照区域（Reference Area）内对13个鹗巢开展了繁殖力观测。 • 受托人（Trustees）团队结合2011年地面繁殖力观测工作，独立对鹗巢内物质的荧光特性开展检测，以尝试评估碳氢化合物的存在情况。 除上述内容外，不同观测员、观测方法、观测地点与观测时段之间可能存在采样差异。