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Over the past century or so, the earth has seen a significant rise in average global temperatures. Studies show that average surface temperatures have been rising at a rate of approximately 0.1°C/decade, which is significant when compared to estimates of historical values (IPCC, 2001). Whether this temperature change is primarily a result of anthropogenic influences such as the emission of greenhouse gases, or of natural fluctuations in climate, global warming will have a profound effect upon the oceans and should therefore be of great concern to anyone with a stake in global fisheries. It is also very likely that global warming will accelerate in the near future due to positive feedback mechanisms (IPCC, 2001). Climate change is somewhat difficult to monitor, and even more so difficult to predict accurately. Despite this, research on current systems as well as research into past global warming events provides us with an idea of what might can be expected in future years. By knowing Through knowledge of the general trends of climate change, an understanding effect of their effects on fisheries can begin to be extrapolateddeveloped.
Annual anomalies of global average land-surface air temperature (Jones et al., 2001).
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