The world’s oceans are seeing an increase in surface temperature. In fact, sea s

Question

The world’s oceans are seeing an increase in surface temperature. In fact, sea surface temperatures have been higher during the past three decades than at any other time since reliable observations began in 1880 (http://www.epa.gov/climatechange/science/indicators/oceans/sea-surface-temp.html).

Using some or all of the data from the figure above, provide an evidence-based prediction for what will happen to ocean fishes if ocean temperatures continue to increase without restraint. Be sure to specifically reference the data from the passage and figure in order to support your prediction.

Explanation / Answer

Based on the given data it is expected that the temperature anomaly will be 2oF. If the ocean temperatures continue to increase without restrain the fishes in the sea water will have a disproportionate effect on fish habitat and populations, and the incidence of diseases is expected to rise. This will result in species extinctions at the margins of their current habitats (for example salmon and sturgeon), and fish yields in places like Lake Tanganyika are expected to fall by around 30 percent. Climate induced effects anticipated in the Mekong include a significant change in the food chain because of declining water quality, changed flow patterns, a changed pattern of vegetation and saltwater intrusion in the lower delta.

It is expected to have food web cycle distruption because the ecological threshold (a position where irreversible change happens to the live forms) is passed. Evidences in various places support the fact. e.g. A decrease of penguines population by 20%

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