Aquatic organic matter is subject to a hard-water error and is therefore not usable.
Triculines form a wholly aquatic group exhibiting today an amazing adaptive radiation of three tribes, over 20 genera and more than 120 species.
Species that depend on large, and/or permanent, aquatic sites for reproduction simply go extinct as is reflected in species composition and turnover patterns.
It is argued that these features probably reflect common adaptations to the constraints imposed by the aquatic environment.
Scope for use of stable carbon isotopes in discerning the incorporation of forest detritus into aquatic foodwebs.
However, there is much work to do in both integration of the theories and applicability of the real aquatic mechanisms.
In sites where visibility was too poor for observation of tadpoles, such as areas with submerged aquatic vegetation, microhabitats were sampled with a small dipnet.
It is found that on an average annually about 6 per cent of the total aquatic biomass is utilized by the villagers as fodder.
