Full Results — SC Shellfish Aquaculture Governance Network

Kate Chatman · MPA/EVSS Dual-Degree Thesis · College of Charleston / S.C. Sea Grant Consortium · 2026 · ← back to overview

Full Governance Network Administrative Burden Layer ACF Coalition Structure

Network summary

104 actors and 275 documented relationships (423 directed edges after bidirectional expansion), coded from statutory documents, public records, organisational materials, and a January 2024 working group survey. Every tie carries an evidence tier and source note.

Structural brokers — betweenness centrality

nameactor_typebetweennessdegree_indegree_out
SC Sea Grant Consortium (SCSGC)science-extension0.36733131
South Carolina Shellfish Growers Association (SCSGA)advocacy0.35812927
SCDNR Shellfish Management Sectionregulatory0.28051948
SCDNR MRRI / Shellfish Researchregulatory0.08351314
SCDES Shellfish Sanitation Sectionregulatory0.0747 637
Matt Gorsteinscience-extension0.06341010
College of Charleston (institutional)science-extension0.0525 6 6
South Carolina Aquariumadvocacy0.0377 4 4
Trey McMillanindustry0.0376 8 1
Caitlyn Mayerindustry0.0233 8 4

Brokerage roles

Gould & Fernandez (1989) distinguishes five forms of mediation by the sector membership of the broker relative to the actors being connected. Betweenness identifies who brokers; this identifies what kind of brokerage they perform, which carries different policy implications.

Gatekeepers — control access into their own sector

nameactor_typeGatekeeper
SC Sea Grant Consortium (SCSGC)science-extension231
South Carolina Shellfish Growers Association (SCSGA)advocacy165
SCDNR Shellfish Management Sectionregulatory 70
SCDNR MRRI / Shellfish Researchregulatory 19
Matt Gorsteinscience-extension 19
Peter Kingsley-Smithregulatory 13
Susan Lovelacescience-extension 7
College of Charleston (institutional)science-extension 5
Andrew Richardregulatory 5
SCDES Shellfish Sanitation Sectionregulatory 4

Liaisons — bridge otherwise disconnected sectors

nameactor_typeLiaison
SCDNR Shellfish Management Sectionregulatory219
South Carolina Shellfish Growers Association (SCSGA)advocacy163
SC Sea Grant Consortium (SCSGC)science-extension 44
SCDES Bureau of Coastal Managementregulatory 24
SCDES Shellfish Sanitation Sectionregulatory 18
Caitlyn Mayerindustry 14
Matt Gorsteinscience-extension 12
Susan Lovelacescience-extension 6
Jeff Masseyindustry 5
Thomas (Tom) Bierceindustry 4

Coordinators — broker within their own sector

nameactor_typeCoordinator
SC Sea Grant Consortium (SCSGC)science-extension258
SCDNR Shellfish Management Sectionregulatory113
SCDNR MRRI / Shellfish Researchregulatory 95
South Carolina Shellfish Growers Association (SCSGA)advocacy 56
College of Charleston (institutional)science-extension 18
Matt Gorsteinscience-extension 16
SCDES Shellfish Sanitation Sectionregulatory 15
Clemson University (institutional)science-extension 14
Lauren Faulkregulatory 12
South Carolina Aquariumadvocacy 12
Corrected 29 July 2026. Earlier versions of this dashboard transposed the Gatekeeper and Itinerant brokerage roles, an artefact of assigning sna::brokerage() output columns by position rather than by name. Coordinator, Representative and Liaison values were unaffected. Edge width now reflects mandated interaction frequency rather than documentation confidence.