Bbloglcal

physical and

IZCtors

• Env~ronmenl CImle


• Hydrology limnolwy and


• Geomorpho~y


• 
  
  
  
  • Soils Vegelalion
  
  
  
  


• Zoobgical

Fish - Ichlhyolcgy bmbgy

• Species wallabiliiy

• Nulhion Dielaw levels


• Ford preferences
  
  
  • Nalioral (Resourn devebpmeni allocmn goals and &ate@@ priorities
  
  
  • Dewlopnent and sMus of awacullure
  
  
  • am3 Technical linmiai am3 assislance manmr developmew
  
  
  • National infrastructure
  
  
  • PmtecIwe lmisla<mn
  
  
  
  

-1

• Mationships wlh olher emnomic sncton

1 I I Actual aquamlure ~esource svslem Le! I 11

Poliulards

and

enuironmefial olh~r

deltimenls Babglcal inplts. and

physical

• 
  
  
  
  • Fish Pond reeds len~l~rers
  
  
  
  


• Fryilingerlings

Absorb

mlpdls

01

flsh S,'sl*m Culture

• Fenile mud


• Nulriznt-rich
  waler

Demographic conkxt

• Popu!al~on


• nmrlclre


• Populallon
  dynamlcs

Nulrilion

• 
  
  
  
  • Dlerary Food preierencee lsvels
  
  
  
  

Context factors

0 System elements

Fig. 1. A resource systems model of aquaculture in human ecological context.