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Model Equations

INIT ChangedRabbits_ = InitialChanged_Rabbit

INFLOWS:

ChangedRabbits_Growth_ = IF(ChangedRabbits_+Original_Rabbits)=0
THEN(0) ELSE(((ChgR@ChgR__BirthRate*ChangedRabbits_+OrgR@ChgR__ChgRBirthRate*
((Original_Rabbits*ChangedRabbits_)/(4*(Original_Rabbits+ChangedRabbits_))))
*Available__Grass_)*GrassLost_to_Rabbits)

OUTFLOWS:

Changed_Rabbit__Deaths = IF(ChangedRabbits_+Wolves_)=0
THEN(0) ELSE((ChangedRabbits_*Rabbit_Natural_Death_Rate+(ChangedRabbits_Lost_to_Wolves*(Wolves_)))
+ChangedRabbits_
*(1-GrassLost_to_Rabbits))

INIT Grass = Initial_Grass
INFLOWS

Grass_Growth = Grass_BirthRate*(1-Grass/Grass_Limit)*Grass

OUTFLOWS:

Grass_loss_ = Grass*Grass_Natural_DeathRate+GrassLost_to_Rabbits*(Original_Rabbits+ChangedRabbits_)

INIT Original_Rabbits = InitialOriginal_Rabbit
INFLOWS:
OriginalRabbits_Growth = IF(ChangedRabbits_+Original_Rabbits)=0 THEN(0) ELSE(((OrgR@OrgR__BirthRate*
Original_Rabbits+ChgR@OrgR__OrgRBirthRate*((Original_Rabbits*ChangedRabbits_)/(4*
(Original_Rabbits+ChangedRabbits_))))
*Available__Grass_)*GrassLost_to_Rabbits)
OUTFLOWS:
Original_Rabbit_Deaths = IF(Original_Rabbits+Wolves_)=0 THEN(0)
ELSE((Original_Rabbits*Rabbit_Natural_Death_Rate+
(OriginalRabbits_Lost_to_Wolves*(Wolves_)))+Original_Rabbits*(1-GrassLost_to_Rabbits))

INIT Wolves_ = Initial_Wolves
INFLOWS:
Wolf_Growth = IF(Original_Rabbits+ChangedRabbits_)=0 THEN(0) ELSE(Wolf_BirthRate*(((Original_Rabbits+ChangedRabbits_)
*Wolves_)/((ChangedRabbits_+Original_Rabbits+Wolves_)))
*(Original_Rabbits/(Original_Rabbits+ChangedRabbits_))*
(ChangedRabbits_Lost_to_Wolves+OriginalRabbits_Lost_to_Wolves))
OUTFLOWS:
Wolf_Deaths = Wolf_Natural_DeathRate*Wolves_+Wolves_*(1-(ChangedRabbits_Lost_to_Wolves+OriginalRabbits_Lost_to_Wolves))