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Ammonia - PowerPoint PPT Presentation


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Respiration & Excretion. Ammonia. Nitrification #1. Higher Trophic Levels. Nitrite. Phyto. Zoo. Nitrification #2. Nitrate. PON Mineraliz. Denitrification. Predation. Molecular nitrogen. DON Mineraliz. PON. Mortality & Excretion. Zoo - Copepod. Non-assimil ated. Decomposition.

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Presentation Transcript
slide1

Respiration

& Excretion

Ammonia

Nitrification #1

Higher Trophic Levels

Nitrite

Phyto

Zoo

Nitrification #2

Nitrate

PON

Mineraliz.

Denitrification

Predation

Molecular nitrogen

DON Mineraliz.

PON

Mortality & Excretion

Zoo - Copepod

Non-assimilated

Decomposition.

DON-R

Respiration

& Excretion

DON-NR

slide2

Respiration

& Excretion

N

Ammonia

Nitrification #1

Higher Trophic Levels

C

C

Nitrite

N

Phyto

Zoo

Nitrification #2

N

Nitrate

PON

Mineraliz.

Denitrification

Predation

Molecular nitrogen

N

DON Mineraliz.

N

PON

Mortality & Excretion

Zoo - Copepod

Protozoa - Ciliate

Non-assimilated

Decomposition.

N

DON-R

Respiration

& Excretion

N

DON-NR

Uptake

Release

C

C

Bacteria

Protozoa

Predation

slide3

N

Ammonia

C

Phyto

N

PON

  • Razão C:N:P fixa - 106:16:1 (RedField)
  • Modelação do carbono implícita
slide4

Organismo “standard”

CO2

NH4 ; PO4

respiração

excreção

de nutrientes

X

Alimento

uptake

Predadores

C:N:P

predação

“slopy feeding”,etc.

mortalidade

DOM

POM

slide5

NH4

CO2

SiO4

NO3

PO4

[O2]

[O2]

DOC

DON

DOP

slide7

O2

Phytoplankton

O

C

N

P

NH4

CO2

N

O

C

O

Microzooplankton

R

PO4

P

C

N

P

O

C

R

U

G

BACTERIA

POM

C

N

P

R

C

N

P

M

DOM

U

C

N

P

L

H

H

DOM

(semi-

labile)

C

N

P

Multi-element model

Grazing

Hydrolysis

Lysis

Mortality

Respiration

Uptake

slide8

Vantagens desta abordagem:

  • Desacoplar o uptake de cada nutriente
  • Razões C:N:P variáveis
  • Considerar o armazenamento de nutrientes
slide9

Nutrientes (P)

Descargas

Fitoplâncton

Descargas

Matéria orgânica

O2

CO2

Bactérias