1 / 16

Environmental and Socioeconomic Risks of Shrimp Aquaculture

Environmental and Socioeconomic Risks of Shrimp Aquaculture. Erin Farrell, Chris Lang, Sarah Von Lehman Team A04-B. Summary. Environmental and Socio-economic Aspects of shrimp aquaculture Physical environment Water Quality Negative and Positive Socio-economic

lola
Download Presentation

Environmental and Socioeconomic Risks of Shrimp Aquaculture

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Environmental and Socioeconomic Risks ofShrimp Aquaculture Erin Farrell, Chris Lang, Sarah Von Lehman Team A04-B

  2. Summary • Environmental and Socio-economic Aspects of shrimp aquaculture • Physical environment • Water Quality • Negative and Positive Socio-economic • What are the environmental risks associated with shrimp aquaculture?

  3. Problem Statement • Resource intensive • High demand for product • Escalation of risks

  4. Physical Environment: Shift to Intensive Aquaculture • Becoming lucrative in early 1980s • Traditional practices • One crop per year • 100-500 kg shrimp / hectare • Semi-intensive and intensive practices • 2-3 crops per year • 1,000-10,000 kg shrimp / hectare

  5. Mangrove Functions & Resources • Trap sediments • Process nutrients & organic matter • Provide food and habitat • Protect shorelines • Provide plant products

  6. Mangrove Destruction • Feed, seed, energy, and fresh water • Lifespan of 5-10 years • 1993-1994 > increase of 200,000 ha of shrimp ponds in Asia

  7. Water Quality • Feed and Gut Passage Times • How fast food is digested • How completely it’s digested • Depends on species and Food Content • Uneaten Food, Feces • Eutrophication / Anoxia

  8. Taura Syndrome Virus Healthy Shrimp Shrimp Infected with TSV Recent studies show possible transferance to mammalian species (including human and monkey)

  9. Other Water Quality Issues • Salt water intrusion • Nutrient Enrichment (Effluent) • Particulate organic matter (decayed / live plankton) • Fertilizers / Insecticides (N and P) • Antibiotics

  10. Water Quality • Turbidity and Sedimentation • Increasing acreage = soil erosion • Canals, roads, & other infrastructure • Plants intolerant of salinity Pond area in production in southern Honduras from 1985 to 2000

  11. Positive Shrimp Culture • Economic • $56.47 Industry 2000 • Many communities rely on shrimp culture

  12. Sustainable methods • Use less intense shrimp practices • Lower stocking densities resulting in higher survival rates • Less diseases • Less inputs into system

  13. Land delegation • Rotate between shrimp and rice • Delegate productive rice fields • Education is essential

  14. Education • Types of shrimp • Other possibilities for crops • Using currents • Dry season feed • Less intensive

  15. Negative Aspects • Local farmers can not compete • Cut off from mangroves • Government backing

  16. Conclusions • Industry expansion • Water quality and environmental impacts • Educate • Move toward sustainability

More Related