Biology & ecology
Phosphorus loading
Phosphorus loading is the rate at which dissolved and particulate phosphorus enters a water body — measured in pounds per acre per year for management purposes. Phosphorus is the limiting nutrient for most freshwater algae blooms; cut phosphorus, and bloom intensity drops even if other conditions remain favorable. Major sources on residential ponds: lawn fertilizer runoff, septic seepage, decaying vegetation, waterfowl waste. Shoreline buffer plantings intercept dissolved phosphorus before it reaches the water column.
Related terms
- EutrophicationThe over-enrichment of a water body with nutrients, leading to chronic algae blooms and oxygen crashes.
- Filamentous algaeBright green stringy mats of single-celled algae that bloom on nutrient-loaded ponds in warm weather.
- Shoreline boomA floating barrier deployed along a shoreline to catch drifting floating vegetation before it reaches docks.
Related articles
- Filamentous algae in Florida ponds: why it keeps coming backIf your pond is clear in March and a green-mat disaster by June, the problem isn't the algae — it's the nutrient load.
- Shoreline restoration with native plants: a Florida buyer's guideMowed turf to the water's edge is the #1 cause of pond water quality problems. Replacing 6 ft with native shoreline plants fixes more than it looks.