... There is a general, although unfounded, belief that marine organisms are widespread with a low risk of extinction. In reality, many are restricted to small areas with greatly restricted ranges. Narrow range endemics are the result of a combination of intrinsic (biological) and extrinsic...

... trends for inland arid and semi-arid Australia. Endemism and species richness were examined at species, genus and family level. Of the 125 species-group taxa included in the analysis, 42 (33.6%) are narrow-range endemics (occupying three or fewer 10 km 2 grid squares. Of these endemics, 33 (78.6...

... for the purposes of examining distributional trends for inland arid and semi-arid Australia. Endemism and species richness were examined at species, genus and family level. A potentially high correlation was found between species richness, endemism and sharp topographic relief, highlighting the desert ranges...

... the 1980s. The results show that Coastal Valley Grassy Woodlands in different regions of NSW are floristically distinct and support large numbers of endemic species. Similarities among regional variants relate to a relatively small group of widespread and abundant species which contribute strongly...

..., and have been arriving throughout the Neogene, and probably later Paleogene. The Australasian murids are polyphyletic and compromise; New Guinean Old Endemics, New Guinean Rattus, Australian Old Endemics, and Australian Rattus. Murids had begun to arrive by the early Pliocene, and have continued...

... Recognizing and naming species underpins assessment of species richness, patterns of diversity, distribution and endemism, and most of the templates used to define invertebrate assemblages and help set priorities for conservation. Formal names facilitate information retrieval, and also influence...

... . They appear to have very restricted distributions, with almost one-third of species being endemic to the wet forests of north Queensland. Preliminary results from studies on the taxonomy, phylogeny and distribution of Australian baeines are discussed n i relation to their potential in biodiversity studies...

... The Striped Legless Lizard Delma impar is a vulnerable endemic reptile restricted to the native grasslands of southeastern Australia. This study examined the effectiveness of fluorescent powders to track D . impar in its natural grassland habitat. A total of 15 lizards was tracked...

... lies in museum collections and, if electronically databased, these data can be made accessible for use in biodiversity assessment and a wide range of other research programs. The Australian Museum has embarked on a Narrow Range Endemics Program based on the collection data for a range of non-marine...

... of available information on which to adequately evaluate the status of many species. The unique Australian dragonfly fauna, with its high proportion of endemics, Gondwanan species and species with unusual biological characteristics is rightly deserving of formal protection. ...