Halophila johnsonii 5-Year Status Review

Halophila johnsonii Eiseman

Threatened Seagrass

Halophila johnsonii is a rare marine angiosperm that has only ever been observed in coastal waters off the southeast coast of Florida in the United States, between Sebastian Inlet and northern Biscayne Bay (around Virginia Key). It is a small and opportunistic seagrass that has the ability to live in areas where other seagrass species cannot survive. Its reproductive capabilities are thought to be quite limited because male flowers and seeds have never been observed. Because of its unique physiology, important ecosystem functions, and limited geographic range, it was the first marine plant to be listed as "Threatened" under the Endangered Species Act of 1973. As such, it has become the focus of much research, and in fact, the Johnsons Seagrass Recovery and Implementation Team was created to evaluate its recovery potential and monitor its progress.

 

Johnson's Seagrass Contact List

Team Meeting Agenda

Team Meeting Notes

Pictures from 2007 Team Meeting and sampling trip

Presentations given at meeting

Recovery Needs and Actions

Important H. johnsonii Documents

Johnson's Seagrass Reference List with Hyperlinked
PDFs of available documents

Seagrass Fact Sheet

H. johnsonii fact sheet

Websites relevant to H. johnsonii

H. johnsonii time line

Dock Criteria Study

Image Gallery

Data Sets