Effect of Decalcification Procedures on the Dry Weights of Benthic Invertebrates

Richards, Norman J.; Richards, Steve

doi:10.4319/lo.1965.10.3.0469

Cited by 15 publications

(1 citation statement)

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“…Individual taxa were dried in an oven for 24 hours at 70 0°C (Tebo, 1955;Gerking, 962;Thut, 1969) to a constant weight. For the molluscs, shells were first removed in o1% HCI (Gerking, 1962;Richards & Richards, 1965) before drying. After removal from the oven, dried material was placed in a dessicator until it reached ambient temperatures.…”

Section: Methodsmentioning

confidence: 99%

Eutrophication of the Salt Valley Reservoirs, 1968?73 III. The macroinvertebrate community: Its development, composition, and change in response to eutrophication

Hergenrader

Lessig

1980

Hydrobiologia

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The macroinvertebrate communities of four flood control reservoirs in eastern Nebraska, differing in age and degree of eutrophy were investigated from Ekman grab samples. Generally, the longer a reservoir had been influenced by eutrophication the larger the standing crop in it. Chironomids, ceratopogonids. fingernail clams, and Hexagenia were important at various stages of eutrophication with Chironomus predominating in the most eutrophic reservoirs. Tubifex decreased with eutrophication as did Sphaerium simili while Sphaerium declive maintained its abundance and sometimes increased.The chironomids Chironomus, Coelotanypus, and Procladius, fingernail clams, and Tubifex were early colonizers in the newest reservoir and developed a total standing crop as large the first summer as in subsequent ones. However, its composition became more diverse with time. In one reservoir sampled yearround, the standing crop was largest in late fall or early winter and smallest during summer. The most accurate information on macro-invertebrate standing crops in lakes and reservoirs comes from data collected on a year-round basis.

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Section: Methodsmentioning

confidence: 99%