AbstractWe examined the ability of 5 a priori landscape classifications (3 sizes of catchments, ecoregions, and life zones) to partition observed variation in the composition of stream invertebrate ...
Invertebrates are creatures without a backbone — like insects, worms, snails, arachnids, freshwater crayfish and mussels — and make up 95 per cent of the animal world. Scientists say more than 9,000 ...