Woylies relationship with other organisms in the same ecosystem

Woylie Conservation Research Project - ABC South West WA - Australian Broadcasting Corporation

The effect of fire on the forest ecosystem. (50 marks). Periodic . Briefly describe all of the relationships the woylie has with other organisms. 4. What factors. However, the historical geographical relationship of these sub-species is ( truffles), but also feed on tubers, bulbs, seeds and other vegetative products, such as resin. As a result, Woylies contribute significant 'ecological services' to areas they in the last decade, from an estimated , to fewer than 20, animals. During monitoring of critically endangered woylie (Bettongia penicillata) .. burden compared with other animals encountered during this monitoring program. . and there was a significant negative relationship between higher FCM levels and Endowment and the Ecological Society of Australia ( HOLSWF).

Status The woylie has shown some dramatic changes in conservation status. A review of the conservation status of the woylie undertaken inlead to its status being downgraded on Western Australian, Australian and international threatened species lists, due to its apparent recovery in response to both fox baiting and reintroductions.

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Threats The main threats to the woylie were red foxes. These plants both protect the woylies with cover, as well as possibly causing reduction in predators due to secondary poison when the predators eat them. The successful recovery during the s and s was largely due to intense fox baiting campaigns. Other causes of historical decline were loss of habitat from land clearing, grazing and changed fire regimes.

Disease has also been suspected as an agent of decline.

IUCN Red List of Threatened Species

The causes for declines since have been a mystery, and clearly need more research. Predation by both foxes and cats may be playing a part, as is disease. Strategy The campaign of both intense fox bating and reintroduction into baited areas, and areas surrounded by predator proof fences was successful in the initial recovery of the woylie. From the initial three populations found in the s, woylies were established in an additional 22 locations across Western Australia, South Australia and New South Wales.

As the recent causes of decline are unknown, it is difficult to plan actions for the woylie recovery.

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Nests are located on the ground in or near thickets of vegetation, spinifex hummocks, small shrubs or grass-tree fronds. Females breed continuously throughout the year, giving birth to one young rarely two at a time.

A single female can produce up to three offspring per year, depending on environmental conditions. Joeys remain in the pouch for 90 - days.

Woylie Conservation Research Project

Threats The Woylie population has declined fromto between 10, — 20, in the last 15 years. Predation by European foxes is the major cause of range contraction and decline of Woylie populations. However, predation by feral cats is emerging as another serious threat.

In Western Australia, Woylies increased in distribution and abundance following large-scale fox-baiting during the s; however, most populations have declined again in the last decade. The most likely cause is predation by feral cats, although research is also being conducted into the potential role of disease in population decline. In the past, extensive areas occupied by the Woylie were cleared for agriculture, and millions of Woylies and other bettongs were killed as agricultural pests or for the fur trade in the early 20th century.

What is AWC doing? The Karakamia population has the distinction of being the only population of Woylies in Western Australia that has not declined in recent years.