Troglofauna in the vadose zone: comparison of scraping and trapping results and sampling adequacy

摘要: Most sampling of troglofauna occurs in caves but species are widespread across the vadose zone Western Australia iron ore deposits and calcretes. Other than karstic calcrete, subterranean spaces Australian small often similar size to inhabiting them. Here we describe how can be sampled using a technique called scraping, which haul net is dropped down hole drilled for geological exploration. We analysed results 10,895 events both scraping trapping techniques were used. In Pilbara region Australia, where most fieldwork occurred, collected approximately three-quarters more troglofaunal animals twice as many per sample. orders greater numbers by trapping. However, yields from low and, even when combined constitute single unit sample effort, currently prescribed effort environmental impact assessment will document only about half present at site. It suggested that larger number samples should collected.