Generally used or commonly accepted field preservation methods in ecology and zoology?

Question

What kind of tissue preservation methods are popularly used by ecologists when they are out in the field collecting samples (other than cryopreservation-freezing or refrigeration)?
Also, wondering if someone can point me in the right direction of main literature/research supporting the preservation methods used.

Answer 1

http://highered.mcgraw-hill.com/sites/dl/free/0072439440/60317/appendixd.pdf

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