Speaker: Kyle Neumann. PhD Candidate at UC Santa Barbara
Topic: The influence of terrestrial runoff on the health of reefs around Mo’orea, French Polynesia, and how doing things the hard way inspired the development of new research tools.
Nearshore reefs around the island of Mo'orea, French Polynesia are showing many of the negative telltale signs associated with increased terrestrial runoff of nutrients and sediment. In the last decade, some of Mo’orea’s reefs have experienced a precipitous decline in coral cover and a corresponding increase in the cover of macroalgae. At the same time, Mo’orea has seen rapid growth in its human population, as well as an increase in agriculture and development. Due to the island's steep geomorphology, watershed boundaries are very sharply delineated. As a result, land-use, human population, and agricultural regimes are often very different watershed to watershed. This provides a unique opportunity to study the impact of a wide range of land-use intensity, and subsequent watershed nutrient and sedimentation regimes, on the community composition of individual fringing reefs. From 2017 to 2019 we collected data on nutrient concentrations, total suspended solids, microbial community composition, and nearshore reef health from 18 watersheds around the island during both the rainy and dry seasons. In this talk, I will discuss the preliminary results of this study and the development of new, low-cost, open source, research tools that were developed in response to collecting thousands of water samples by hand.
Link: Join Zoom Meeting https://oregonstate.zoom.us/j/94555731151
Thursday, June 11 at 3:30pm to 4:30pm
Hatfield Marine Science Center, Guin Library Seminar Room
2030 SE Marine Science Dr, Newport, OR 97365