Other Rare, Threatened and Endangered Species

Powelliphanta snails

Powelliphanta snails are nationally endangered species of snail that grows to over 20 years old and 100 millimetres in diameter. These have been found in the Shannon forest.  Snail counts are conducted every two years to monitor the population size and make recommendations for future snail management.

Brown Mudfish

The Brown Mudfish (Neochanna apoda),  a species classified as being in “Gradual Decline” since first being discovered in New Zealand in the 1860s, is found within Ernslaw One's estate.  Brown Mudfish (Neochanna apoda) are currently found in five wetland areas within Ernslaw One's Santoft forest.  A survey in 2006 identified four new mudfish sites along with one previously identified site.  These wetland areas will remain as natural habitat and are protected by Ernslaw One's environmental management protocols.  Similar areas of wetland complex are often drained for pasture on neighbouring farm land. Thus the exotic plantation is providing additional habitat and protection for indigenous biodiversity values.

Blue duck

Blue duck (Hymenolaimus malacorhynchos) are regarded as Nationally Endangered, the second highest category of threat.  Blue duck  (Maori name: "Whio Whio") is a river specialist which inhabits clean, fast flowing streams in the forested upper catchments of New Zealand rivers.  They occur nowhere else in the world.  Ernslaw One's East Coast Forests have some of this habitat and Blue Duck has been reported as being present within two blocks.  Further education and recognition will likely lead to more locations being reported through the Threatened Species reporting procedure.

Native Bats

Bats are New Zealand’s only native terrestrial mammal.  There are three species belonging to two genera.  These are the greater short tailed bat (Mystacina robusta), Lesser short tailed bat (M. tuberculata) and the Long tailed bat (Chalinolobus tuberlatus).  Northern Short Tail Bat (Mystacina tuberculata aupourica) and Long Tailed Bat (Chalinolobus tuberculatus) are present in many of Ernslaw One’s forests.

Information on the distribution and abundance of Long- and Short- tailed bats in the North Island is sketchy at best, as is knowledge on their use of exotic forests in this region.  As both of these species are primarily insectivores they have become established within the insect rich exotic forests of Ernslaw One's estate, thus the exotic plantation is providing additional habitat and protection for indigenous biodiversity values.