Abstract:
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: This dataset focuses on data related to 2010 osprey nest status and 2011 osprey productivity collected as part of the cooperative NRDA process. This dataset includes data collected cooperatively with the Trustees. 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: 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. 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. 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.
Suggested Citation:
BP Gulf Science Data. 2016. 2010 osprey nest and 2011 osprey productivity observations from nests in Louisiana, Alabama, Mississippi, and Florida. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N7WQ027P
Data Parameters and Units:
Data Publication Date = Date associated with the current data posting date (MM/DD/YYYY); Data Publication Reference = A general description of data provided in the data posting and a version control number; Study Reference No. = Number assigned by BP to provide a link between the data provided in the data file and the associated work plans and study descriptions; Study Name = Title of the osprey productivity study; Sampling Event Date = Date observation occurred (MM/DD/YYYY); Target Location = Nest identification number; Location Usage = Whether the location was in the area of potential impact or the potential reference area; Vessel Team = Whether the observation was made by ground-based or airplane-based team. Only ground-based observations contain information on number of eggs, number of chicks, number of juveniles, and age of chicks; County = County in which nest is located; State = State in which nest is located (AL, MS, LA, FL, TX); Nest Substrate = Structure type housing the nest; Nest Condition = Status of the nest (Damaged, Intact/complete, Remnant, Null); Nest Lining = Condition of the nest lining (Absent, Good, Null, Poor, ); Evidence of Potential Nest Oiling = Was there evidence of potential nest oiling (None, Null, UV fluorescence, Visable light spectrum); ; Egg Count = Number of eggs observed ,or, if adult was observed in the incubating position, number of eggs was marked as greater than or equal to 1; Chick Count = Number of chicks observed, or, if adult was observed in the brooding position, number of chicks was marked as greather than or equal to 1; Juvenile Count = Number of juveniles present during observation. Juveniles were identified by their distinct plumage appearance; Adult Count = Number of adults present during observation; Bird Oiled = Was there a bird observed as oiled during observation (N=no, Y=yes, Null= no value recorded); Chick Age Weeks = An estimated age, in weeks, for the chicks observed; Adult1 Activity = Adult number 1 behavioral description (None=no adult activity observed, Null=no value recorded); Adult2 Activity = Adult number 2 behavioral description (None=no adult activity observed, Null=no value recorded); Blood Collected = Was a blood sample collected (N=no, Null=no value recorded); Feathers Collected = Was a feather sample collected (N=no, Y=yes, Null= no value recorded); Eggs Collected = Were eggs collected (N=no, Null=no value recorded); Chicks Collected = Were chicks collected (N=no, Null=no value recorded); Nest Lining Collected = Was nest lining collected (N=no, Y=yes, Null= no value recorded); Adults Banded = Were the adults banded during observation; Chicks Banded = Were the chicks banded during observation (N=no, Null=no value recorded); Measurements Made = Were any measurements taken of adults or chicks (N=no, Null=no value recorded, N/A = still being resolved); Comments = Notes and comments recorded by field team; (IP=Incubating Position, BP=Brooding Position, GHOW=Great Horned Owl, OSPR=Osprey, Behavior Code 3=Ospreys within 200 meters, BAEA=Bald Eagle); Field Data Verification Status = Summary of the data verification process status described in Appendix B. Valid entries - Not started, Underway, and Complete;
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