Download SIO 296 Concept Lecture II - The Scripps Center for Marine

SIO 286
January 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
HMS & Dr. Suzy Kohin
•Biology
•Surveys and abundance
•Management
Photo: Scott R. Benson,
NMFS Southwest Fisheries Science Center
Noaa.gov
Noaa.gov
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.