Illustration of high nitrogen and phosphorus concentration
Illustration of high phosphorus concentration
Illustration of intermittent nitrogen and phosphorus concentration
Illustration of intermittent phosphorus concentration
Unicode: E206
Illustration of P. Shumwayae (Dinoflagellate)
Illustration of a high bioassay response to nitrogen and phosphorus
Illustration of a high P response in a bioassay
Illustration of a low N + P bioassay response
Illustration of a low P bioassay response