The earth's axis of rotation wobbles like a spinning top. There are two periods (a wobble within a wobble): 19,000 AND 23,000 years. Precession has a profound effect on the earth's climate.
Why are seagrasses crucial to the environment?
a. Fish communities
b. Homes for other sea animals
c. Near shore sedimentary processes
d. High energy production rate
e. Links between seagrasses, mangroves, and coral reefs
Why are seagrasses at risk?
a. Boat propeller scarring
b. Nutrient loading
Negative Impacts to the environment if seagrass beds are destroyed:
a. Loss of animal habitat
b. Negative impacts on coral reefs
Burfeind, Dana and Gregory Stunz. “The effects of boat propeller scarring intensity on nekton abundance in subtropical seagrass meadows”. Marine Biology; Mar2006, Vol. 148 Issue 5, p953-962, 10p.
Ferdie, Meredith and Fourqurean, James W. “Responses of seagrass communities to fertilization along a gradient of relative availability of nitrogen and phosphorus in a carbonate environment”. Limnology & Oceanography; Nov2004, Vol. 49 Issue 6, p2082-2094, 13p.
Kricher, John. A Neotropical Companion. Princeton: Princeton University Press, 1997.
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