Phosphorus or Nitrogen
A. F. Harrison has written: 'Review of nitrogen distribution and cycling in forest ecosystems' 'Soil organic phosphorus' -- subject(s): Soils, Phosphorus content, Phosphorus
uh... Nitrogen (N) is the other. http://montana-outdoorsman.blogspot.com/
Phosphate enters aquatic ecosystems as a result of erosion, leaching, run-off.
There are different ways, but the most common is through water. Hope this helps.
Ecosystems
Phosphates create detrimental effects to aquatic ecosystems. They cause a reduction in the amount of oxygen in the water, as well as causing an overgrowth of algae.
Ecosystems that are established on land (as opposed to Marine ecosystems).
Eutrophication promotes excessive plant growth and decay and causes a severe reduction in water quality. Phosphorus is a necessary nutrient for plants to live, and is the limiting factor for plant growth in many freshwater ecosystems.
Saltwater/Marine ecosystems and Freshwater ecosystems.
they are both marine ecosystems
Stable ecosystems.