新托福阅读材料：Increasein’warmwater’dolphinsoffNorthEastcoast

会计考友

为了生存，许多物种都会为了适应周遭不断变化的环境而改变和进化。生活在英国东北海域的海豚就是这样，那些适应了温暖海水的海豚种类在数量有所增加，而需要生活在低温海水中的海豚种类数量减少了。  
　　Warmer seas could be responsible for a change in the type of dolphins spotted off the coast of the North East of England, a survey has suggested.
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5 N! X  T! Y* f- B2 Q5 o  R　　The North East Cetacean Project found an increase in sightings of common, bottlenose and Risso's dolphins - species associated with warmer waters.

5 d( J0 b. h. p3 \5 \　　There have also been fewer sightings of white-beaked dolphin and harbour porpoise, which prefer colder water.
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! g. y* g! A( L　　It is thought the distribution shift is due to increasing sea temperatures.

% u5 j! b0 n! j: Y7 P3 U　　The NECP is a partnership including the charity Marinelife, Northern Experience Wildlife Tours, Natural England, the Northumberland and Tyneside Bird Club and the University of Aberdeen.
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　　Dr Tom Brereton, who analysed the findings, said: "This research adds to the growing body of evidence that some species of whales and dolphins are showing shifts in distribution, possibly as a result of increasing sea temperatures.
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　　"For example, common dolphins have been spreading north in recent years, presumably due to warming sea temperatures.

　　"This is a potential cause of concern because studies in other regions have shown that the arrival of common dolphins coincides with a corresponding disappearance of white-beaked dolphins.
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: I! j; V- Q. h　　"White-beaked dolphins have a much narrower habitat requirement and are associated with colder sea conditions."
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( n7 l  ~! l3 F1 c: _# u1 D　　The project is asking the region's fishermen, recreational dive and angling boats, yachtsmen, and pleasure craft operators to get in touch with any offshore sightings.