Yes, other nutrients are needed, just like in your garden. Soild in mMany areas of the world are nutrient rich. Other nutrient poor areas, like parts of the warm and damp rain forest, plants rely on rapid nutrient recycling. Significant changes in climate can negatively impact this rapid recycling.

Ocean and freshwater plants gets nutrients from land sources and upwelling of nutrients from ocean depths and the seafloor. Wind storms (especially in the winter and spring) and currents bring the nutrients to upper layers, where sunlight is present.