Marstonia agarhecta F.G. Thompson, 1969
Ocmulgee Marstonia

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Federal Protection: No US federal protection

State Protection: No Georgia state protection

Global Rank: G1

State Rank: S1

Element Locations Tracked in Biotics: Yes

SWAP 2015 Species of Greatest Conservation Need (SGCN): Yes

SWAP 2025 Species of Greatest Conservation Need (SGCN): Yes

2025 SGCN Priority Tier: Highest Conservation Concern

Element Occurrences (EOs) in Georgia: 2

Habitat Summary for element in Georgia: Submerged logs in clear water with slight current; occasionally individuals found in silt that contains large amount of diatoms

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SWAP 2025 Threat Matrix

	Threat 1	Threat 2	Threat 3
General Threat	Agriculture & aquaculture	Residential & commercial development	Invasive & other problematic species, genes & diseases
Specific Threat	None	None	None

SWAP 2025 Conservation Actions:

• Action 1: Assess SGCN gastropod and gastropod communities in the Altamaha River system
• Action 2: Research genetics and taxonomy
• Action 3: Carry out surveys to track distribution abundance and impact of invasive gastropod species in the system

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