SOP 12: Abundance Estimation (KM_K Creation) version 1.0, SEAN/GLBA Kittlitz's murrelet monitoring program
Hoekman S, Johnson W, Moynahan B, Sergeant C. 2010. SOP 12: Abundance Estimation (KM_K Creation) version 1.0, SEAN/GLBA Kittlitz's murrelet monitoring program. NPS SEAN. Juneau, Alaska
The certified versions of the “KM_E: Cumulative observation database” and “KM_J: Detection function” deliverable for the current survey year are used to estimate species-specific, on-water density and abundance within the survey area. Using software code for the R statistical package provided in Appendix D, the user specifies data inputs and then executes code to produce estimates of encounter rates, density, and abundance for use in reports and analyses of population status and trend. Output from the R code is appended to “KM_K: Abundance estimates” deliverable. Please refer to the synthesis and program review report for monitoring of Kittlitz's murrelets in Glacier Bay National Park and Preserve which contains important findings that may affect the interpretation of abundance estimates (Hoekman, S. T. 2019. Kittlitz’s murrelet monitoring in Glacier Bay National Park and Preserve 2010–2018: Synthesis and program review. Natural Resource Report NPS/SEAN/NRR—2019/1957. National Park Service, Fort Collins, Colorado, https://irma.nps.gov/DataStore/Reference/Profile/2265288). The report summarizes the results of murrelet monitoring from 2010-2018, assesses monitoring performance and capacity to meet protocol objectives, and provides recommendations for potential enhancements to the monitoring protocol. Hoekman (2019) identifies misidentification and partial identification of murrelets which can bias abundance estimation and spatially-explicit density estimates, particularly for rare species, such as Kittlitz’s murrelets.
- Type
- Standard Operating Procedure
- Authors
- Hoekman, Steven; Johnson, William; Moynahan, Brendan; Sergeant, Christopher
- Date of Issue
- 2010
- Publisher
- NPS SEAN
- Units
- GLBA , SEAN
- Keywords
- Glacier Bay, Kittlitz's murrelet, marbled murrelet, murrelet, sop, standard operating procedure
- Subjects
- Ecological Framework: Biological Integrity | Focal Species or Communities | Birds