L1 /
16
CH3041
NUTRIENTS IN THE
OCEAN
• In the oceans the
minor elements show
three sorts of behaviour:
three sorts of behaviour:
• Conservative
behaviour: Br-, MoO42-
little interaction with biota, long t
little interaction with biota, long t
• Nutrient-like behaviour: NO3-, DIP, H4SiO4
biomass incorporation depletes [surface]
biomass incorporation depletes [surface]
Organic
matter descends, decomposition increases
[nutrient] with depth. long t
• Scavenged: Al, Fe -
metals,
short t, surface input scavenged onto particle surface then constant with depth.
short t, surface input scavenged onto particle surface then constant with depth.
North
Pacific
North
Pacific
