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Human activity seen as a threat to marine echinoderms http://apocadocs.com/s.pl?1235588887
CREATURES are falling victim to human activities, and scientists say it could interfere with the evolutionary process and lead to extinctions.
Known as echinoderms, the species are essential for keeping ecosystems healthy and if their populations either crash or multiply, degraded seascapes may result.... "Each of these 28 cases was experiencing difficulties because of human activity, including over-fishing, nutrient run-off from the land, species introductions and climate change," Dr Uthicke said.
"We suggest that human-induced disturbance, through its influence on changes to echinoderm population densities, may go beyond present ecosystems impacts and alter future evolutionary trends."
In the Caribbean, sea urchins have died off and on the Great Barrier Reef an over-fished sea cucumber area closed six years ago has not recovered.
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[Read more stories about:
toxic water, ocean acidification, ocean methane, invasive species]
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Alvin says: "Not as cute as sea-horses!"
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'Doc Michael says:
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Starfish, sea urchins, sand dollars, even sea cucumbers -- all the cute sea critters. Time for a save-the-echinoderms campaign?
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