Dominant structure-providing organisms were consumed by very large herbivores until humans consumed too many of those large herbivores.

Reflecting their more ancient evolutionary history, a greater proportion of shark species than of boney fish species reproduce by spawning eggs and sperm into the water  column.

sea snakes 

Sediment in channels of mangrove swamps and salt marshes, where the water movement is slow and calm is more likely to be   

corals

Dominant structure-providing organisms can be eliminated by herbivores if they are unchecked by predation 

Health of the ecosystem would benefit if populations of currently depleted large herbivores could rebuild, because the dominant plants are more vulnerable to self-shading and disease when they get too large 

Explicitly uses terms from the logistic growth equation, i.e., intrinsic rate of increase and carrying capacity, to describe different life history strategies 

Predicts that only one or a few “K-selected” species will dominate the community if there is no disturbance for long periods 

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