As of that June 2023 in Tasmania, about 7.1 percent of the population in was between 30 and 34 years old. In comparison, just 2.4 percent of the population was over the age of 85.

Australia Population: Resident: Estimated: Tasmania data was reported at 575,959.000 Person in Sep 2024. This records an increase from the previous number of 575,496.000 Person for Jun 2024. Australia Population: Resident: Estimated: Tasmania data is updated quarterly, averaging 476,787.000 Person from Jun 1981 (Median) to Sep 2024, with 174 observations. The data reached an all-time high of 575,959.000 Person in Sep 2024 and a record low of 427,224.000 Person in Jun 1981. Australia Population: Resident: Estimated: Tasmania data remains active status in CEIC and is reported by Australian Bureau of Statistics. The data is categorized under Global Database’s Australia – Table AU.G002: Estimated Resident Population.

Humans have been living on the continent of Australia (name derived from "Terra Australis"; Latin for "the southern land") for approximately 65,000 years, however population growth was relatively slow until the nineteenth century. Europeans had made some contact with Australia as early as 1606, however there was no significant attempt at settlement until the late eighteenth century. By 1800, the population of Australia was approximately 350,000 people, and the majority of these were Indigenous Australians. As colonization progressed the number of ethnic Europeans increased while the Australian Aboriginal population was decimated through conflict, smallpox and other diseases, with some communities being exterminated completely, such as Aboriginal Tasmanians. Mass migration from Britain and China After the loss of its American colonies in the 1780s, the British Empire looked to other parts of the globe to expand its sphere of influence. In Australia, the first colonies were established in Sydney, Tasmania and Western Australia. Many of these were penal colonies which became home to approximately 164,000 British and Irish convicts who were transported to Australia between 1788 and 1868. As the decades progressed, expansion into the interior intensified, and the entire country was claimed by Britain in 1826. Inland colonization led to further conflict between European settlers and indigenous Australians, which cost the lives of thousands of natives. Inward expansion also saw the discovery of many natural resources, and most notably led to the gold rushes of the 1850s, which attracted substantial numbers of Chinese migrants to Australia. This mass migration from non-European countries eventually led to some restrictive policies being introduced, culminating with the White Australia Policy of 1901, which cemented ethnic-European dominance in Australian politics and society. These policies were not retracted until the second half of the 1900s. Independent Australia Australia changed its status to a British dominion in 1901, and eventually became independent in 1931. Despite this, Australia has remained a part of the British Commonwealth, and Australian forces (ANZAC) fought with the British and their Allies in both World Wars, and were instrumental in campaigns such as Gallipoli in WWI, and the South West Pacific Theater in WWII. The aftermath of both wars had a significant impact on the Australian population, with approximately 90 thousand deaths in both world wars combined, as well as 15 thousand deaths as a result of the Spanish flu pandemic following WWI, although Australia experienced a significant baby boom following the Second World War. In the past fifty years, Australia has promoted immigration from all over the world, and now has one of the strongest economies and highest living standards in the world, with a population that has grown to over 25 million people in 2020.

Wildlife managers often rely on population estimates, but estimates can be challenging to obtain for geographically widespread species. Spotlight surveys provide abundance data for many species and, when conducted over wide spatial scales, have the potential to provide population estimates of geographically widespread species. The bare-nosed wombat (Vombatus ursinus) has a broad geographic range and is subject to spotlight surveys. We used 19 years (2002–2020) of annual spotlight surveys to provide the first estimates of population abundance for two of the three extant bare-nosed wombat subspecies: V. u. ursinus on Flinders Island; and V. u. tasmaniensis on the Tasmanian mainland. Using distance sampling methods, we estimated annual rates of change and 2020 population sizes for both sub-species. Tasmanian mainland surveys included habitat data, which allowed us to also look for evidence of habitat associations for V. u. tasmaniensis. The average wombat density estimate was higher on Flinders Island (0.42 ha^-1, 95% CrI = 0.25 – 0.79) than on the Tasmanian mainland (0.11 ha^-1, CrI = 0.07 – 0.19) and both wombat subspecies increased over the 19-year survey period with an estimated annual growth rate of 2.90% (CrI = -1.7 – 7.3) on Flinders Island and 1.20% (CrI = -1.1 – 2.9) on mainland Tasmania. Habitat associations for V. u. tasmaniensis were weak, possibly owing to survey design; however, we detected regional variation in density for this subspecies. We estimated the population size of V. u. ursinus to be 71,826 (CrI = 43,913 – 136,761) on Flinders Island, which when combined with a previously published estimate of 2,599 (CI = 2,254 – 2,858) from Maria Island, where the subspecies was introduced, provides a total population estimate. We also estimated 840,665 (CrI = 531,104 – 1,201,547) V. u. tasmaniensis on mainland Tasmania. These estimates may be conservative, owing to individual heterogeneity in when wombats emerge from burrows. Although these two sub-species are not currently threatened, our population estimates provide an important reference when assessing their population status in the future, and demonstrate how spotlight surveys can be valuable to inform management of geographically widespread species.

Australia Population Change: Natural Increase: Tasmania data was reported at -80.000 Person in Sep 2024. This records a decrease from the previous number of 61.000 Person for Jun 2024. Australia Population Change: Natural Increase: Tasmania data is updated quarterly, averaging 582.000 Person from Jun 1981 (Median) to Sep 2024, with 174 observations. The data reached an all-time high of 1,075.000 Person in Mar 1982 and a record low of -82.000 Person in Sep 2017. Australia Population Change: Natural Increase: Tasmania data remains active status in CEIC and is reported by Australian Bureau of Statistics. The data is categorized under Global Database’s Australia – Table AU.G003: Population Change.

The European colonization of the Americas and Oceania introduced new diseases to biologically defenseless societies, and this resulted in a significant population decline among the indigenous populations in the early years of settlement. In the first two centuries of the Americas' colonization alone, the indigenous population dropped to just 10 percent of its pre-colonial level, with smallpox considered to have been the most destructive. Additionally, the indigenous populations of the Caribbean and Tasmania were virtually all wiped out. Growth through migration It was only through European settlement and the importation of African slaves that the population of the Americas began growing in the 18th century, while European and (to a lesser extent) Asian migration to both continents then saw this increase further between 1820 and 1950. However, growth peaked in Latin America and the Caribbean during the late-1900s, due to their relatively later demographic development. International comparison Compared to the rest of the world, annual average growth rates in these colonized and settled regions were much higher, due to high rates of migration and the fact that their starting populations were much smaller. While much of Africa and Asia was also colonized by Europeans, it was less likely to be settled in the same manner, and these populations were also familiar with the diseases carried by Europeans. The most significant demographic developments for these continents was the onset of their demographic transitions, which coincided with the periods of population growth.

This study created a size-structured stock assessment model to examine the population dynamics and fishing impacts on the long-spined sea urchin (Centrostephanus rodgersii) on the east coast of Tasmania, Australia. The model tracks urchin abundance and growth through size classes over time, using a transition matrix to determine how individuals grow each year, for nine (9) East Coast Tasmanian regions described by Ling and Keane (2018). It begins in 1960 with no population, reflecting the species' first recorded presence in Tasmania in 1978. The model runs until 2160, but the focus of the paper and results is for management options in the next 5 to 10 years, plus retrospective examination for the past 15 years since commercial fishing began.

The model generates data through the model testing and fitting process. Output files are defined by three 'classes' (biomean, fitsum, nevermean), with each class producing results for the nine different geographic regions. (1) 'biomean' is predicted urchin density (kg/m2) for each region; (2) 'fitsum' is the Rstan-produced model fit for each region, where the model provides a fit of an equation for recruitment over time based on a sigmoidal increase function; (3) 'nevermean' is the predicted/projected urchin density if no commercial fishing ever occurred for each region.

The modelling process is fully described in the associated journal article (in final preparation). A description of files is provided in the 'Lineage' section of this record.

人口变化：自然增长：塔斯马尼亚在09-01-2024达-80.000人，相较于06-01-2024的61.000人有所下降。人口变化：自然增长：塔斯马尼亚数据按季更新，06-01-1981至09-01-2024期间平均值为582.000人，共174份观测结果。该数据的历史最高值出现于03-01-1982，达1,075.000人，而历史最低值则出现于09-01-2017，为-82.000人。CEIC提供的人口变化：自然增长：塔斯马尼亚数据处于定期更新的状态，数据来源于Australian Bureau of Statistics，数据归类于全球数据库的澳大利亚 – Table AU.G003: Population Change。

Demographics and lupus disease features.