Cryptic Reef Invertebrate Diversity from Hawaiian Autonomous Monitoring Structures

NOAA Coral Reef Ecosystem Program data assesses cryptic reef diversity using standardized Autonomous Reef Monitoring Structures deployed across the Hawaiian Archipelago. The method involves PVC plate stacks mimicking reef complexity to collect colonizing marine invertebrates over consistent surface areas. This monitoring is part of the ongoing National Coral Reef Monitoring Program.

Use Cases

• Analyze morphospecies composition from the sorted 2 mm fraction of recovered ARMS units.
• Compare cryptic biodiversity across reef sites using standardized ARMS deployment and recovery protocols.
• Monitor temporal changes in recruited sessile organisms documented via plate photographs.
• Assess recruitment patterns by correlating data with ARMS unit soak time at each location.
• Study community structure by examining preserved samples from 500 um and 100 um sieved fractions for future DNA analysis.

Strengths

• Standardized sampling over precisely the same surface area ensures methodological consistency.
• Deployment across multiple specific reef sites in the Hawaiian Archipelago provides spatial coverage.
• Processing includes multiple size fractions (2 mm, 500 um, 100 um) and preservation for different analyses.

Limitations

• DNA sequencing data from preserved samples is not included in this collection.
• Soak times for ARMS units vary by location, introducing a temporal variable.
• Sample size and row count are unknown, limiting statistical power assessment.

Provenance

Source

NOAA Coral Reef Ecosystem Program (CREP) / National Coral Reef Monitoring Program (NCRMP).

Collection Method

Deployment and recovery of standardized Autonomous Reef Monitoring Structures (ARMS) by divers, followed by onboard disassembly, photography, sieving, and preservation.

Geography

Specific reef sites across the Hawaiian Archipelago.