Biology 2483A Lecture 16: Biology 2483A Lecture 16
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Effects of the eruption varied depending on distance from the volcano and habitat type. Others were in burrows, or under ice-covered lakes, or were plants with underground parts. Grassy meadows, their preferred habitat, expanded after the eruption. Their burrowing activities facilitated plant succession by bringing organic soil, seeds, and fungal spores to the surface. Newly-formed and isolated ponds were colonized by amphibians much faster than was thought possible. Frogs and salamanders were using tunnels created by northern pocket gophers to make their way from one pond to another. Facilitation by dwarf lupines on the pumice plain. They trap seeds and detritus, and have nitrogen-fixing bacteria: lupines were inhibited by insect herbivores, which controlled the pace of succession, tolerance: douglas fir and herbaceous species lived together in some habitats. Communities are always changing, and at different rates. Agents of change act on communities across all temporal and spatial scales. Consider a coral reef community in the indian ocean.
