際際滷

際際滷Share a Scribd company logo
Aquaculture/Shrimp Farming
Its meaning, Impact on Surrounding Ecosystems,
               Pitfalls and Models


                Ariel Zajdband




                                     MIIS
                                     December 3 2012
aquaculture
Tomb of Thebaine (Egypt)




                           Costa-Pierce 2006
World capture fisheries and aquaculture production




                                                     FAO 2012
Distribution of aquaculture production




                                         World Fish Center 2011
Shrimp aquaculture production
Shrimp imports
Conventional shrimp farm
Global mangrove distribution




                               Siikam辰ki et al. 2012
Global mangrove distribution




                               Kuenzer et al. 2011
Mangrove deforestation in Ayeyarwady Delta, Burma
                                               Giri et al. 2008
Causes of mangrove deforestation by country




                                              Giri et al. 2008
Sundarbans, India and Bangladesh
Pichavaram, India
Pichavaram, India
Bahia de Jiquilisco, El Salvador
Bahia de Jiquilisco, El Salvador
environmental
impacts
Carbon footprint per kg of protein




                                     Nijdam et al. 2012
Fishmeal trap




                  Tacon & Metian 2008
Fishmeal trap




                  Tacon & Metian 2008
Fishmeal trap
Miis
Miis
Ecosystem services




                     Adapted from MEA (2005)
Total economic value of mangrove ecosystem




                                             Barbier (1991)
Long-term C sequestration




                            Mcleod et al 2011
Non-linear effects of mangrove cover




                                       Barbier et al 2008
Protection against coastal disasters




                                       Das and Vincent 2009
Shrimp farm effluents




                        Molnar et al. 2012
Shrimp farm effluents




                        Molnar et al. 2012
Sediment deposition around mangrove trees




                                            Primavera et al 2011
Sediment deposition around mangrove trees




                                            Primavera et al 2011
Bird numbers by season in four types of habitats




                                                   Zou et al 2006
Antibiotic concentrations in aquatic ecosystems




                                                  Thuy et al 2011
social impacts
Coping strategies for shrimp diseases




                                        Mills et al 2011
Net emergy flows and trade between shrimp farmers in
the Sri Lankan coastal zone and the global North




                                               Bergquist 2008
Bergquist 2008
proposed
solutions (?)
Shrimp+red tilapia polyculture




                                 Yuan et al 2010
Shrimp+red tilapia polyculture




                                 Yuan et al 2010
closed recirculating systems




                               Klinger & Naylor 2012
Integrated shrimp-mangrove systems




                                     Gebhardt et al. 2012
Land use cover Ca Mau, Vietnam (2000-2010)




                                             Gebhardt et al. 2012
Land use cover Ca Mau, Vietnam (2010)




Gebhardt et al. 2012
Macrobrachium amazonicum (native species)
Macrobrachium amazonicum (native species)
food sovereignty
        (a new paradigm)
food sovereignty
           (principles)
1. Focuses on Food for People
2. Values Food Providers
3. Localizes Food Systems
4. Puts Control Locally
5. Builds Knowledge and Skills.
6. Works with Nature
Misiones, Argentina
Miis
Miis
Miis
Miis
Miis
Miis
In which kind of farm is aquaculture being
               introduced?
             Cluster 2. Forestry-livestock-based farms
         +
WEALTH




             Cluster 1. Perennial crops-based farms




         -   Cluster 3. Tobacco-based farms
Production by farm cluster (n=45)
                  500
                  450
Production (kg)



                  400
                  350
                  300                                     Cluster 1
                  250
                                                          Cluster 2
                  200
                  150                                     Cluster 3
                  100
                  50
                   0
                        0   500   1000    1500   2000   2500
                                  Area   (m2)
How is aquaculture contributing to income generation and
      fish supply for rural markets/self-consumption?
                Destination of fish production (kg) x cluster

cluster 3


                                                              self-consumption (kg)
cluster 2
                                                              gift (kg)
                                                              sold (kg)
cluster 1


            0   50          100         150           200
                                              Significative differences

                                  self-consumption (kg)          gift (kg)                sold (kg)
                                    mean         sd          mean          sd         mean          sd
                     cluster 1          93,10     17,43        11,19         8,05       67,62        76,35
                     cluster 2          77,00     15,85        22,00        10,85       82,50       104,86
                     cluster 3          72,14     16,84         8,57         7,70       31,61       106,85
How is aquaculture contributing to income generation and
         fish supply for rural markets/self-consumption?
                        Destination of fish production (kg) x # ponds

3

                                                                      self-consumption (kg)
2
                                                                      gift (kg)
                                                                      sold (kg)
1


    0           100         200          300         400      500


                                                                    Significative differences
        n harvested
           ponds      self-consumption (kg)    gift (kg)            sold (kg)                   farms   ponds
                       mean          SD         mean         SD      Mean           SD
            1          84,87        19,12       12,10       8,67     37,24         47,04         38      38
            2            73         19,23          9        7,42      208          24,90         5       10
            3           72,5        17,68         35       14,14     337,5         53,03         2       6
Some questions and challenges
Who is benefiting the most from aquaculture
development?

Aquaculture development programs: segmented
or not?

How can we distribute fish so it can be accessed
by the poor?
QUESTIONS?

  anwers?
Thank you
and


HAPPY FESTIVUS!


  Ariel Zajdband
  ariel.zajdband@gmail.com

More Related Content

Miis

Editor's Notes

  1. Note log scale of the y axis.Error bars indicate maximum rates of accumulation
  2. Shrimp pond dikes play an important role by substituting for natural hightide roosts such as sandbars, which, in many cases, they replaced.