Ammonia Nitrite Nitrate Molecular nitrogen DON-NR DON-R PON Nitrification #1 Nitrification #2 Denitrification Phyto Decomposition. PON Mineraliz. DON Mineraliz. Zoo Higher Trophic Levels Respiration & Excretion Mortality & Excretion Non-assimilated Respiration & Excretion Predation Zoo - Copepod
Ammonia Nitrite Nitrate Molecular nitrogen DON-NR DON-R PON Nitrification #1 Nitrification #2 Denitrification Phyto Decomposition. PON Mineraliz. DON Mineraliz. Zoo Higher Trophic Levels Respiration & Excretion Mortality & Excretion Non-assimilated Respiration & Excretion BacteriaProtozoa Uptake Predation Release Predation Zoo - Copepod Protozoa - Ciliate N N N N N N N CC CC
Ammonia PON Phyto N N C Razão C:N:P fixa - 106:16:1 (RedField) Modelação do carbono implícita
X Predadores NH4 ; PO4CO2 DOMPOM Alimento C:N:P mortalidade predação excreção de nutrientes respiração “slopy feeding”,etc. uptake Organismo “standard”
PO 4 SiO 4 CO 2 NH 4 NO 3 DOP DOC DON [O 2 ]
BACTERIA CNP DOM CNP (semi- labile) CNP POM CNP M H H U L G razing H ydrolysis L ysis M ortality R espiration U ptake R O2O2 O CO 2 CO U R NH 4 N PO 4 P R Microzooplankton CNP G Phytoplankton CNP O CO Multi-element model
Vantagens desta abordagem: 1.Desacoplar o uptake de cada nutriente 2.Razões C:N:P variáveis 3.Considerar o armazenamento de nutrientes
Nutrientes (P) Fitoplâncton Matéria orgânica Bactérias O2O2 CO 2 Descargas