Monday, March 4, 2013

How does global warming influence lobster


How does the global warming affect lobster's respiration rate?

Warming temperatures increase the lobster’s respiration rate and oxygen needs while reducing the amount of dissolved oxygen available. Research has found that as water temperatures rise above 69 degrees F, lobsters' respiration rate increases to a point where their demand for oxygen exceeds the supply, causing physiological stress.

How does the global warming affect lobster's habit?

As ocean temperatures fluctuate, so do the lobsters' habits. Lobsters can respond to temperature changes by changing their habitat. For example, lobsters are likely to move toward higher latitudes or to areas cooled by tidal mixing. In New England, for example, such populations will move north toward the Bay of Fundy.

Global warming and lobster's health problems

lobster shell disease has become dramatically more common in recent years. A new type of shell disease was observed in New England in the late 1990s, when temperatures were higher than in previous years, and has been steadily moving northward toward Maine and Canada. The incidence of shell disease is strongly related to the number of days during which water temperatures exceed 20 degrees C (68 degrees F).

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