Search Results for population viability

...Tim Clark; Gary Backhouse; Robert Lacy A Population Viability Assessment (PVA) workshop was held in Melbourne in May, 1990, to demonstrate its potential to wildlife managers by applying PVA to six species of threatened wildlife in Victoria. The workshop ran for one week and involved 32 participants...

... of reduced nest predation and pulse recruitment to maintain population viability and (3) low levels of adult mortality can drive populations to extinction. Turtle populations require pulse recruitment (i.e. nest predation rates declining to <35% every ten years) and monitoring of nest predation rates...

... have comparatively low genetic diversity, a factor that plays a key role in long term population viability. In Victoria, the koala is not listed as a threatened species. Despite the low genetic diversity of most populations, the species is widely distributed across the state, and relatively common...

... population viability would also be compromised. This argument can be countered by the persistence of populations under harvesting without any obvious impairment to reproduction. Nevertheless, an interesting question is how age influences reproductive output. In this study, data collected from a number of red...

... population genetics) or human dimensions is provided in short courses or workshops, if at all. Short courses provide advanced technical knowledge (e.g., an advanced stock assessment workshop for fisheries scientists or population viability analysis workshops for conservation biologists...

... would determine whether admission rates reflect the sex ratio of local populations, and whether the high number of injured or killed females has an impact on their viability. Analyses of wildlife carer databases have great potential for decision making in koala conservation. Vehicle collisions and dog...

... forestry, roads and electricity easements. The increased risk of wildfire due to climate change threatens the viability of these populations. Corresponding author: [email protected] Shoalhaven National Parks arboreal mammals Southern Greater Glider Yellow-bellied Glider Squirrel...

... the permanent tagging of individuals have revealed substantial variation in the size of populations but further research is needed to relate population size to viability. Two major threatening processes (habitat loss and predation by exotic fish) were implicated in 1996 in the decline of the Green and Golden...

... to range expansion or population increases in some other native species. Consequently, in an increasing number of situations, the viability of a threatened native species is now being compromised by another native species, and conservation managers must consider options for how best to make decisions about...

...Hugh Possingham; Katriona Shea Biodiversity Conservation biology Decision theory Economics Lindenmayer, D. B. and Possingham, H. P., 1996. Ranking conservation and timber management options for Leadbeater's possum in south-eastern Australia using population viability analysis. Cons...

..., B.D. and Goldingay, R.L. 2009. Can road-crossing structures improve population viability of an urban gliding mammal? Ecology and Society 14, 13. Can road-crossing structures improve population viability of an urban gliding mammal? Ecology and Society 14 13 van der Ree, R. and Loyn, R.H...

... in which most frogs are predominantly green. Further study of this important population is needed to more adequately determine the size of the female component of the population, and to better understand the limits on successful breeding. These issues will influence our understanding of the viability...

... characteristics including singing, displaying and flying that consequently can have significant impacts on the viability of free-living individuals and populations. In the current study, display flights of male Brown Songlarks (Cincloramphus cruralis Vigors and Horsfield 1827) before and after the application...