Brian Lapointe, Ph.D.


Marine Life

Brian E. Lapointe’s research interests include algal physiology and biochemistry, seagrass and coral reef ecology, eutrophication, marine bioinvasions and marine conservation.

He has extensive experience in water quality research in South Florida and the Caribbean region. As Chief Scientist on numerous Caribbean and western North Atlantic Ocean research expeditions, he has amassed valuable field experience in assessing relations between water quality and the health of tropical seagrasses and coral reefs. Professor Lapointe’s long-term water quality monitoring at Looe Key reef in the Florida Keys represents the longest low-level nutrient record for a coral reef anywhere in the world. His work in the Keys led to a strong phosphate ban and new state regulations for Monroe County requiring greater nutrient removal from sewage effluents.

Professor Lapointe’s work in Florida Bay and the Florida Keys National Marine Sanctuary in the 1990s, which utilized stable nitrogen isotopes to “fingerprint” nitrogen sources, was the first to demonstrate the importance of agricultural nitrogen from mainland sources to development of algal blooms in the Keys. He developed the first “ridge-to-reef” water quality monitoring program for the European Union in Negril, Jamaica, a model that has been adopted by Marine Protected Areas around the Caribbean region. Professor Lapointe has advised the U.S. Environmental Protection Agency, National Oceanic and Atmospheric Administration, State of Florida and the governments of Monroe County (Florida Keys), Palm Beach County, Lee County, Bahamas, Tobago, Turks & Caicos, Jamaica, Bonaire, Curacao, Martinique and St. Lucia on development of water quality monitoring programs for assessing the impacts of land-based pollution.

Professor Lapointe’s Sargassum research has yielded novel insights into the ecology of this macroalgae, the Sargasso Sea and associated communities, including symbiosis with juvenile fish marked by exchange of habitat and nutrients.

Harbor Branch Series: Secrets of the Sargasso Sea

For over five centuries, the Sargasso Sea has been a subject of lively debate among explorers and scientists alike. Named for its characteristic brown seaweed Sargassum, the boundary of the Sargasso Sea is now defined by the currents that surround this unique “sea without a shore” — also known as the North Atlantic Central Gyre.

Professor Lapointe will share a number of “secrets” about this mysterious oceanic realm, some of which date back to the historic voyage of Christopher Columbus. He will describe the discovery of Sargassum by early explorers, the phenomenon of the “Bermuda Triangle” and the amazing community of invertebrates and fishes supported by Sargassum “weedlines.” Professor Lapointe will show outtakes of a documentary of the Sargassum community that he and NHK Broadcasting (Tokyo, Japan) collaborated on in 1997. He will close by describing his recent studies of the impacts of the Deepwater Horizon oil spill on the “essential fish habitat” provided by pelagic Sargassum.

Buy any four Harbor Branch Series lectures for $75 (Osher LLI members only).M/strong>
Register Early! There is a $5 charge for registering on the day of a one-time lecture or event.

Course # S1M6 — One Time Event
Place:Auditorium, Lifelong Learning Complex, Jupiter Campus
Dates:Monday, April 16 2018
Time:2:15 - 3:45 PM
Fee:$25 / member; $35 / non-member

Register Now