ex c SCI Black Abalone Survey appendix.pdf
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- ISLAND-WIDE BLACK ABALONE SURVEYS AND HABITAT CHARACTERIZATION AT SAN CLEMENTE ISLAND (SCI), CA
- Opportunity number
- N62473-24-2-0009
About this file
This document contains information related to a federal grant opportunity issued by the Department of the Navy Naval Facilities Engineering Command. The grant opportunity, titled "ISLAND-WIDE BLACK ABALONE SURVEYS AND HABITAT CHARACTERIZATION AT SAN CLEMENTE ISLAND (SCI), CA", seeks to fund projects that support compliance with the San Clemente Island Integrated Natural Resource Management Plan and the recovery of the endangered black abalone population on the island. The grant opportunity is part of the Basic and Applied Scientific Research program (CFDA 12.300), which supports research and technology with potential to improve naval operations. The document includes details on the project objectives, such as conducting population assessments, refining knowledge of the black abalone population, and characterizing their habitat. It also provides information on the survey areas, sampling methods, and data collected during previous abalone surveys on the island. Overall, this grant opportunity aims to assist natural resource managers in the conservation and recovery of the black abalone species on San Clemente Island.
ex c SCI Black Abalone Survey appendix
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Site Data Activity
Eel Point 1/22/2016
West Cove 1/23/2016
Lost Point 1/24/2016
Mail Point 1/24/2016
Flasher/Spray 1/25/2016
Eel Point 6/21/2016
West Cove 6/22/2016
Eel Point 10/17/2016
West Cove 10/18/2016
Eel Point 2/7/2017
West Cove 2/7/2017
Eel Point 7/11/2017
West Cove 7/12/2017
Eel Point 11/6/2017
West Cove 11/7/2017
Eel Point 2/1/2019
West Cove 3/15/2019
Mail Point 3/16/2019
Lost Point 3/17/2019
Spray 3/18/2019
Flasher 3/19/2019
Eel Point 1/24/2020
West Cove 1/24/2020
Graduation Point 1/26/2020
North Head 2/10/2020
Monitored crevices, clearings, and ARMs. Removed ARMs Conducted site-wide search for abalone recruits. Conducted survey to locate previoulsy found abalone. Counted, size, and assessed health/condition of all abalone found
Conducted abalone survey to attempt to locate previously found abalone and any new abalone. Counted, sized, and assessed heath/condition of all abalone found.
Characterized the habitat of the survey area
Monitored crevices, clearings, and ARMs. Conducted site-wide search for abalone recruits.
Monitored crevices, clearings, and ARMs. Conducted site-wide search for abalone recruits.
Year 3
Monitored crevices, clearings, and ARMs. Conducted site-wide search for abalone recruits.
Conducted abalone survey to attempt to locate previously found abalone and any new abalone. Counted, sized, and assessed heath/condition of all abalone found.
Characterized the habitat of the survey area
Year 1
Year 2
Monitored crevices, clearings, and ARMs. Conducted site-wide search for abalone recruits.
Selected crevices, established clearings, installed Abalone Recruitment Modules
(ARMs). Conducted abalone survey to attempt to locate previously found abalone and any new abalone
Monitored crevices, clearings, and ARMs. Conducted site-wide search for abalone recruits.
Table 1. Survey dates and activites conducted.
location size_mm location # abs
Eel Point 130 Eel Point 2
Eel Point 90 Flasher** 1
Flasher 120 Lost Point 2
Lost Point 130 Mail Point 0
Lost Point 160 Spray 1
Spray 100 West Cove 5
West Cove 130
West Cove 140 location # abs
West Cove 110 Graduation Point 1
West Cove 110 Eel Point 4
West Cove 90 Flasher** 6
Lost Point 1 location size_mm Mail Point 2
Gradutaion Point 150 Spray 1
Eel Point 130 West Cove 10
Eel Point 140
Eel Point 100
Eel Point 130
Flasher 140
Flasher 100
Flasher 60
Flasher 130 location ab_ID size_mm
Flasher 140 SWAT1 400 90
Flasher 150 West Cove 352 80
Lost Point 130 West Cove 353 160
Mail Point 60 West Cove 351 60
Mail Point 150 Box Canyon 226 130
Spray 120 Cave Canyon 218 170
West Cove 110 Cave Canyon 213 190
West Cove 160 Cave Canyon 328 180
West Cove 120
West Cove 110
West Cove 150
West Cove 150
West Cove 170
West Cove 130
West Cove 140
West Cove 120
Abalone 2019-2020
Abalone 2016 Totals 2016
Totals 2019-20
Abalone with unknown status
Table 2. Sizes for abalone found in 2016 and 2019-2020.
Table 3. Abalone counts by site for 2016 and 2019-2020 surveys.
Table 4. Previoulsy documented abalone that were not surveyed for in either 2016 or 2019-2020 due to access restritions and/or poor conditions.
**Flasher is broad area on west shore between dunes and Spray (Warsaw).
location year segment_id area (m^2) shoreline length (m) abalone Graduation Point 2020 1 1643 82 1 Graduation Point 2020 2 2344 160 0 Swat1 2020 1 2034 88 0 West Cove 2019 1 1518 100 2 West Cove 2019 2 674 55 2 West Cove 2019 3 861 75 1 West Cove 2019 4 1111 54 0 West Cove 2019 5 2215 50 3 West Cove 2019 6 1517 86 0 West Cove 2019 7 1463 77 2 Flasher** 2019 1 2687 113 1 Flasher** 2019 2 3299 119 0 Flasher** 2019 3 10726 285 3 Flasher** 2019 4 2057 72 2 Flasher** 2019 5 3194 101 0 Spray 2019 1 494 50 0 Spray 2019 2 967 58 1 Spray 2019 3 2068 107 0 Eel Point 2019 1 857 36 2 Eel Point 2019 2 949 84 2 Eel Point 2019 3 271 7 0 Mail Point 2019 1 993 79 1 Mail Point 2019 2 192 44 0 Mail Point 2019 3 1723 57 0 Mail Point 2019 4 1980 73 1 Mail Point 2019 5 1330 68 0 Mail Point 2019 6 77 20 0 Mail Point 2019 7 942 50 0 Mail Point 2019 8 915 31 0 Lost Point 2019 1 2821 89 1 Lost Point 2019 2 1301 57 0 Lost Point 2019 3 3496 135 0 Lost Point 2019 4 1309 50 0 Lost Point 2019 5 2584 81 0 Lost Point 2019 6 356 40 0 Lost Point 2019 7 2163 119 0 Total 36 65131 2852 25
**Flasher is a broad area between the sand dunes and Spray (the Warsaw)
Survey Segment Details
Table 5. 2019-2020 abalone survey details
2019-2020 surveys
Graduation Point 2019-2020
Legend Abalone Survey Segment
400 ft N
N
West Cove
Legend Abalone Survey Segment
700 ft N
West Cove
Legend Abalone Survey Segment
600 ft N
Flasher
Legend Abalone Survey Segment
1000 ft N
N Image © 2021 TerraMetrics
Image © 2021 TerraMetrics
Image © 2021 TerraMetrics
Flasher
Legend Abalone Survey Segment
1000 ft N
Spray
Legend Abalone Survey Segment
1000 ft N
Eel Point
Legend Abalone Survey Segment
300 ft N
Mail Point
Legend Abalone Survey Segment
1000 ft N
Lost Point
Legend Abalone Survey Segment
1000 ft N
| abalone_summary_2020.pdf |
| Sheet3 |
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