Dippers (Cinclus cinclus) are small birds that can be found along fast-flowing streams in Europe and Asia. They feed on insect larvae, especially those of caddis flies (Trichoptera), which they catch by sticking their heads under water and turning over stones. Describe

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Chapter45: Population And Community Ecology
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Dippers (Cinclus cinclus) are small birds that can be found along fast-flowing streams in Europe and Asia. They feed on insect larvae, especially those of caddis flies (Trichoptera), which they catch by sticking their heads under water and turning over stones.

Describe the relationship between the abundance of caddis fly larvae and dippers?Why, is caddis fly larva abundance expressed as ‘relative abundance’? using the data in Table 2

Table 2: The relationship between dipper abundance and caddis fly abundance
Relative abundance of caddis fly larvae
Number of dipper pairs per 10 km stream
10
1
100
800
8
Transcribed Image Text:Table 2: The relationship between dipper abundance and caddis fly abundance Relative abundance of caddis fly larvae Number of dipper pairs per 10 km stream 10 1 100 800 8
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