Threats to Vertigo arthuri

Vertigo arthuri form hubrichti is a state endangered snail and Vertigo arthuri form paradoxa is a special concern snail (Anderson et. al 2002).

Predation of Vertigo arthuri occurs. It is known that Vertigo arthuri fall prey to birds, rodents, and other invertebrates but it is not known which specific species prey on Vertigo arthuri and what amount of pressure that puts on the snail (Anderson, T. 2004).

Fires present one danger to Vertigo arthuri. Fires occur in the grasslands of the Midwest natural and human started fires are also present in the area as well. Fires can destroy habitat area as well as blocking off regions affected by the fire. A few studies have been conducted with regards to the effects of fire on Vertigo species but sample sizes were small and the results are thought to be statistical in origin and not based on the biology of the situations which lead to ambiguous results (Anderson, T. 2004).

Roads are an additional obstacle and hazard to Vertigo arthuri. Roads destroy habitat that was once inhabited by the snails as well as creating blockades. Snails may be crushed by vehicles on the road. This can become problematic because, coupled with the already slow movement rate of Vertigo arthuri, it limits the ability of the species to re-distribute if necessary. Combined with other events, such as fires, roads can create substantial barriers for Vertigo arthuri (Anderson, T. 2004).

Timber harvesting destroys habitat and can block re-distribution of snails. Timber harvest is something that also occurs when roads are being built. Reduction in habitat could have potentially detrimental effects to Vertigo arthuri because much of the populations reside in at least partially wooded areas. Deforestation can destroy the layer of decaying leaves that form on the forest floor where many Vertigo arthuri feed (Anderson, T. 2004).

Grazing involved with livestock is a more minor problem but still a problem none the less. Livestock can physically crush the Vertigo arthuri with their hooves or they can eat away large portions of grassy habitats (Anderson, T. 2004).

Recreational activities, especially motorized activities, can create habitat destruction when it is crushed, moved, partially destroyed, or damaged in any from humans. This is some times surprise and something many of us don't consider. Some examples of such activities are rock climbing and ATV riding. These activities can take someone directly into their habitat and possibly destroying the habitats of Vertigo arthuri (Anderson, T. 2004).