SIO 286January 11, 2011

• Answers to email questions - collect

• Field trip waivers

• Turtle trip feedback

• Next week refreshments following class; volunteers needed to retrieve things from Penny on Monday or Tuesday morning.

• Final project: choose partners/ topics (Sarah)

Recap of last week • What do leatherback turtles eat?

– Jellies

• Can you name any foraging areas for the western Pacific population?– Philippines, Malaysia, Oregon, Washington

• Where do Pacific leatherback turtles nest?– Western Pacific: Indonesia, PNG, Solomon

Islands; Eastern Pacific: Central America and Mexico

Recap of last week

• Name some threats to leatherback turtles– Fisheries: pelagic longlines and gillnets

directed and by-catch– Harvest of eggs– Habitat encroachment on nesting beaches– Nest predation– Climate change?

Recap of last week

• What mandates/organizations/laws offer protection of sea turtles in the US?– US Endangered Species Act (Endangered)

• Habitat, Take– The Marine Turtle Conservation Act

• Internationally?– RFMO’s: Inter-American Tropical Tuna Commission

(IATTC)– The Inter-American Convention for the Conservation

and Protection of Sea Turtles: prohibits the intentional capture or killing.

Recap of last week

• Name some conservation strategies.– beach conservation (nesting females, eggs,

critical breeding habitat) – reduced artisanal coastal fisheries mortality– economic: mitigation projects, taxes,

subsidies, eco-labeling, direct and indirect payments, trade regulations

– enhanced at-sea survival; bonus: how? • performance and technology standards

Recap of last week

• Tell me something that you found interesting about last weeks lecture or about the readings.

The Trilogy

Dutton

Photo: Scott R. Benson,

NMFS Southwest Fisheries Science Center

Noaa.govNoaa.gov

HMS & Dr. Suzy Kohin•Biology•Surveys and abundance•Management

Traditional Approach to Fisheries Stock Assessment Model

Balance reproduction and growth with mortality to sustain population biomass

Towards Ecosystem Management

• Managing fishery within an ecosystem context, taking into account ecological interactions, sensitive species and habitats, environmental forcing and effects, social and economic structures and impacts.

• Lab & Exercise today: What do HMS eat? How does that change over time and space? How might that affect management?

Schedule

• Dr. Kohin’s lecture

• Break

• Lab

• Brief back-in-class time to go over optional take-home exercise for extra credit.