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Populations of marine angiosperms, or seagrasses , are at the basis of productive ecosystems thriving in shallow coastal areas around the world.
Some are herbivores, grazing on the filamentous algae covering coral reefs, and a few eat seagrasses and algae on reef flats.
The nutrient-enriched water causes an explosive growth of tiny plants and animals that coat the leaves of the seagrasses .
The next phase of decline is the sudden collapse of ‘architectural ‘species such as kelp, oysters, reef corals, giant sponges, and seagrasses .
Autecological studies on seagrasses have documented that seagrass distribution is strongly related to physiology and growth characteristics, including water depth and salinity zonation.
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