Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
57
datasets available to search
ShareScore release 0.9.0
Dataset results
57 results for “historical range”
Data from: Historical data for conservation: reconstructing range changes of Chinese pangolin (Manis pentadactyla) in eastern China (1970-2016)
The Chinese pangolin (Manis pentadactyla) has long suffered from intense exploitation driven by consumer demand for medicinal use and food. Effective conservation management is hampered by insufficient data on pangolin status and distribution. We integrated ecological niche modeling with long-term ecological records at the local scale (e.g. from local historical documents, grey and published literature and interviews) to estimate the magnitude of potential distribution change of the Chinese pangolin in eastern China (Fujian, Jiangxi and Zhejiang provinces) over time. Our results suggest that the range of the species decreased by 52.20% between the 1970s and early 2000s, and that the population is now mainly confined to the Wuyi Mountains. This reduction in potential distribution range is attributable to anthropogenic pressures. According to our conservation prioritization analysis, the priority conservation area for the Chinese pangolin in eastern China is 51,268.4 km2, 5.62% of which is covered by nature reserves. There are 18 nature reserves and 46 prefectures which are priority areas for conservation in China. The priority-level nature reserves and prefectures in eastern China are mainly located in the center of the Wuyi Mountains, and areas declared important tend to be around the Wuyi Mountains. We propose several actions to improve the conservation status of this species: establish or enlarge nature reserves, ensure local governments at the prefecture level prioritizes conservation management, and encourage local communities to participate in pangolin conservation.
Data from: Historical biogeography using species geographical ranges
Spatial variation in biodiversity is the result of complex interactions between evolutionary history and ecological factors. Methods in historical biogeography combine phylogenetic information with current species locations to infer the evolutionary history of a clade through space and time. A major limitation of most methods for historical biogeographic inference is the requirement of single locations for terminal lineages, reducing contemporary species geographical ranges to a point in two-dimensional space. In reality, geographic ranges usually show complex geographic patterns, irregular shapes, or discontinuities. In this article, we describe a method for phylogeographic analysis using polygonal species geographic ranges of arbitrary complexity. By integrating the geographic diversification process across species ranges, we provide a method to infer the geographic location of ancestors in a Bayesian framework. By modeling migration conditioned on a phylogenetic tree, this approach permits reconstructing the geographic location of ancestors through time. We apply this new method to the diversification of two neotropical bird genera, Trumpeters (Psophia) and Cinclodes ovenbirds. We demonstrate the usefulness of our method (called rase) in phylogeographic reconstruction of species ancestral locations and contrast our results with previous methods that compel researchers to reduce the distribution of species to one point in space. We discuss model extensions to enable a more general, spatially explicit framework for historical biogeographic analysis.
Data from: Range-wide analysis of genetic structure in a widespread, highly mobile species (Odocoileus hemionus) reveals the importance of historical biogeography
Highly mobile species that thrive in a wide range of habitats are expected to show little genetic differentiation across their range. A limited but growing number of studies have revealed that patterns of broad-scale genetic differentiation can and do emerge in vagile, continuously distributed species. However, these patterns are complex and often shaped by both historical and ecological factors. Comprehensive surveys of genetic variation at a broad scale and at high resolution are useful for detecting cryptic spatial genetic structure, and for investigating the relative roles of historical and ecological processes in structuring widespread, highly mobile species. In this study, we analyzed 10 microsatellite loci from over 1,900 samples collected across the full range of mule deer (Odocoileus hemionus), one of the most widely distributed and abundant of all large mammal species in North America. Through both individual- and population-based analyses we found evidence for three main genetic lineages, one corresponding to the 'mule deer' morphological type and two to the 'black-tailed deer' type. Historical biogeographic events likely are the primary drivers of genetic divergence in this species; boundaries of the three lineages correspond well with predictions based on Pleistocene glacial cycles and substructure within each lineage demonstrates island vicariance. However, across large geographic areas, including the entire mule deer lineage, we found that genetic variation fit an isolation-by-distance pattern rather than discrete clusters. A lack of genetic structure across wide geographic areas of the continental west indicates that ecological processes have not resulted in restrictions to gene flow sufficient for spatial genetic structure to emerge. Our results have important implications for our understanding of evolutionary mechanisms of divergence, as well as for taxonomy, conservation, and management.
Data from: Unravelling the effects of contemporary and historical range expansion on the distribution of genetic diversity in the damselfly Coenagrion scitulum
Although genetic diversity provides the basic substrate for evolution, there are a limited number of studies that assess the impact of recent climate change on intraspecific genetic variation. This study aims to unravel the degree to which historical and contemporary factors shape genetic diversity and structure across a large part of the range of the range-expanding damselfly Coenagrion scitulum (Rambur, 1842). A total of 525 individuals from 31 populations were genotyped at nine microsatellites, and a subset was sequenced at two mitochondrial genes. We inferred the importance of geography, environmental factors, and recent range expansion on genetic diversity and structure. Genetic diversity decreased going westwards, suggesting a signature of historical post-glacial expansion from east to west and the presence of eastern refugia. Although genetic differentiation decreased going northwards, it increased in the northern edge populations, suggesting a role of contemporary range expansion on the genetic make-up of populations. The phylogeographical context was proven to be essential in understanding and identifying the genetic signatures of local contemporary processes. Within this framework, our results highlight that recent range expansion of a good disperser can decrease genetic diversity and increase genetic differentiation which should be considered when devising suitable conservation strategies.
Data from: Reconstruction of the historical range alters niche estimates in an endangered rodent
Defining historical baselines is critical for species conservation. Under the niche reduction hypothesis, species in decline may be restricted disproportionately from parts of their environmental niche. This bias likely has important implications for modeling species' distributions if only contemporary occurrences (i.e. post‐range reduction) are used, because suitable habitat will be classified as unsuitable. Unfortunately, robust historical occurrence data is rarely available for sensitive species. In this study, we documented historical locations of the endangered, keystone giant kangaroo rat Dipodomys ingens by examining aerial imagery for burrow mounds. These burrow mounds are readily identifiable and distinguishable from other soil disturbances. We found giant kangaroo rat burrows well outside the currently accepted estimate of their historical distribution. Following the niche reduction hypothesis, we found that giant kangaroo rats have been extirpated from the flattest, hottest, driest parts of their range due to agricultural conversion. This reduction in their realized niche led to significant changes between historical and contemporary models of their distribution. We found that giant kangaroo rats may have occupied up to 56% more habitat historically than currently believed. Our results provide new guidance for managers working on restoration and habitat protection for this ecosystem engineer. This study highlights the critical importance of modeling historical distributions using the entire environmental niche once occupied by species of conservation need.
Subspecies and Distribution. C.s.simumBurchell,1817—SEAngola,NENamibia,Botswana,Zimbabwe,SMozambique,Swaziland,SouthAfrica,andperhapsformerlyinextremeSWZambia. C. s. cottoni Lydekker, 1908 — historically present in S Chad, Central African Republic, S Sudan, NE DR Congo, and Uganda; last individuals occurred in DR Congo, but possibly extinct in the wild. The "Southern White Rhino," race simum, has been introduced into Kenya, Uganda, and Zambia. Especially vague range map for conservation reasons. in Rhinocerotidae
Subspecies and Distribution. C.s.simumBurchell,1817—SEAngola,NENamibia,Botswana,Zimbabwe,SMozambique,Swaziland,SouthAfrica,andperhapsformerlyinextremeSWZambia. C. s. cottoni Lydekker, 1908 — historically present in S Chad, Central African Republic, S Sudan, NE DR Congo, and Uganda; last individuals occurred in DR Congo, but possibly extinct in the wild. The "Southern White Rhino," race simum, has been introduced into Kenya, Uganda, and Zambia. Especially vague range map for conservation reasons.
Subspecies and Distribution. D.b.bicornisLinnaeus,1758—Namibia,W&SESouthAfrica. D.b.longipesZukowsky,1949—historicallyinNigeria,Cameroon,Chad,Sudan,andCentralAfricanRepublic(couldbeextinct). D. b. michaeli Zukowsky, 1965 — Kenya, Rwanda (could be extinct by now), and N Tanzania; historically also in Sudan, Ethiopia, and Uganda. D. b. minor Drummond, 1876 — C Tanzania, Zambia, Zimbabwe, Malawi, Botswana, and Mozambique (possibly extinct), to N and CE South Africa. Especially vague range map for conservation reasons. in Rhinocerotidae
Subspecies and Distribution. D.b.bicornisLinnaeus,1758—Namibia,W&SESouthAfrica. D.b.longipesZukowsky,1949—historicallyinNigeria,Cameroon,Chad,Sudan,andCentralAfricanRepublic(couldbeextinct). D. b. michaeli Zukowsky, 1965 — Kenya, Rwanda (could be extinct by now), and N Tanzania; historically also in Sudan, Ethiopia, and Uganda. D. b. minor Drummond, 1876 — C Tanzania, Zambia, Zimbabwe, Malawi, Botswana, and Mozambique (possibly extinct), to N and CE South Africa. Especially vague range map for conservation reasons.
Distribution. Historically ranged through the Atlantic Forest in the states of Bahia, Espirito Santo, Minas Gerais, and Rio de Janeiro, excluding only lowland forests in the extreme S of Bahia and N Espirito Santo, the N limit of the distribution was probably the Rio Jequirica or the right bank of the Rio Paraguacu, and the S limit is still poorly defined but is probably the Serra da Mantiqueira in S Minas Gerais, near the state boundaries with Rio de Janeiro and Sao Paulo where it meets the distribution of the Southern Muriqui (B. arachnoides). in Atelidae
Distribution. Historically ranged through the Atlantic Forest in the states of Bahia, Espirito Santo, Minas Gerais, and Rio de Janeiro, excluding only lowland forests in the extreme S of Bahia and N Espirito Santo, the N limit of the distribution was probably the Rio Jequirica or the right bank of the Rio Paraguacu, and the S limit is still poorly defined but is probably the Serra da Mantiqueira in S Minas Gerais, near the state boundaries with Rio de Janeiro and Sao Paulo where it meets the distribution of the Southern Muriqui (B. arachnoides).
Distribution. Restricted and patchy range in NE Madagascar that includes the humid forest belt extending from the Marojejy Massif and the Andapa Basin to Maroantsetra; the Androranga River may be the NE distributional limit in the Tsaratanana Corridor, although further surveys are needed to confirm this, and the Antainambalana River in the Makira Forest protected area is currently regarded as the S boundary. Currently, Marojejy represents the N limit ofits distribution, although historic range maps suggest that it once occurred as far N as the Bemarivo River near Sambava. The NE distributional limit in Makira was only recently established, when a few groups were found in the Antohaka Lava Forest, but informal reports suggest that the unprotected Maherivaratra Forest, outside NE Makira, may also contain Silky Sifakas. in Indriidae
Distribution. Restricted and patchy range in NE Madagascar that includes the humid forest belt extending from the Marojejy Massif and the Andapa Basin to Maroantsetra; the Androranga River may be the NE distributional limit in the Tsaratanana Corridor, although further surveys are needed to confirm this, and the Antainambalana River in the Makira Forest protected area is currently regarded as the S boundary. Currently, Marojejy represents the N limit ofits distribution, although historic range maps suggest that it once occurred as far N as the Bemarivo River near Sambava. The NE distributional limit in Makira was only recently established, when a few groups were found in the Antohaka Lava Forest, but informal reports suggest that the unprotected Maherivaratra Forest, outside NE Makira, may also contain Silky Sifakas.
Distribution. Originally distributed throughout the Indo-Malayan Region and S China, including Taiwan, Hainan, and Sri Lanka (only original range shaded in the map). Possible human-mediate introduced range in Maldives, islands of Malaysia, Indonesia, Brunei, Philippines, Japan (Kyushu and Ryukyu Is), Guam, Palau, and New Guinea. Introduced in historical times into East Africa (Egypt, Sudan, Eritrea, Djibouti, Kenya, Rwanda, and Tanzania), Pemba and Zanzibar (Unguja) Is, Madagascar, Comoro Is, Mauritius, Réunion I, and into coastal Arabia (in the vicinity of seaports in Iraq, Kuwait, Bahrain, Saudi Arabia, Yemen, and Oman). in Soricidae
Distribution. Originally distributed throughout the Indo-Malayan Region and S China, including Taiwan, Hainan, and Sri Lanka (only original range shaded in the map). Possible human-mediate introduced range in Maldives, islands of Malaysia, Indonesia, Brunei, Philippines, Japan (Kyushu and Ryukyu Is), Guam, Palau, and New Guinea. Introduced in historical times into East Africa (Egypt, Sudan, Eritrea, Djibouti, Kenya, Rwanda, and Tanzania), Pemba and Zanzibar (Unguja) Is, Madagascar, Comoro Is, Mauritius, Réunion I, and into coastal Arabia (in the vicinity of seaports in Iraq, Kuwait, Bahrain, Saudi Arabia, Yemen, and Oman).
Distribution. Mountainous areas in Morocco (Rif, High and Middle Atlas) and Algeria (Grande and Petite Kabylie); historically it also occurred in W Tunisia but is now extinct there. A free-ranging population occurs in Gibraltar introduced there by the British in 1740. in Cercopithecidae
Distribution. Mountainous areas in Morocco (Rif, High and Middle Atlas) and Algeria (Grande and Petite Kabylie); historically it also occurred in W Tunisia but is now extinct there. A free-ranging population occurs in Gibraltar introduced there by the British in 1740.
FIGURE 9 in A review of records of the Trimeresurus albolabris Gray, 1842 group from the Indian subcontinent: expanded description and range extension of Trimeresurus salazar, redescription of Trimeresurus septentrionalis and rediscovery of historical specimens of Trimeresurus davidi (Reptilia: Viperidae)
FIGURE 9. Trimeresurus septentrionalis live adult female from Kathmandu, Nepal, showing its diagnostic character of plain grass green colouration without any mix of yellow in it. Photo: Gernot Vogel
FIGURE 8. Trimeresurus septentrionalis Holotype MHNG 1404.31 in A review of records of the Trimeresurus albolabris Gray, 1842 group from the Indian subcontinent: expanded description and range extension of Trimeresurus salazar, redescription of Trimeresurus septentrionalis and rediscovery of historical specimens of Trimeresurus davidi (Reptilia: Viperidae)
FIGURE 8. Trimeresurus septentrionalis Holotype MHNG 1404.31 from Nähe Pokhara, Nepal. Photos: Gernot Vogel.
FIGURE 7. Trimeresurus davidi NMW 23925 in A review of records of the Trimeresurus albolabris Gray, 1842 group from the Indian subcontinent: expanded description and range extension of Trimeresurus salazar, redescription of Trimeresurus septentrionalis and rediscovery of historical specimens of Trimeresurus davidi (Reptilia: Viperidae)
FIGURE 7. Trimeresurus davidi NMW 23925:1, 2 entire views: (top right and left), tail profile (mid-left) photos: Gernot Vogel; NHMUK 1986.7.7.40–41 paratypes (mid-right and bottom left and right; photos: P.D. Campbell).
FIGURE 6. Trimeresurus salazar NHMUK 1937.3.1.14 in A review of records of the Trimeresurus albolabris Gray, 1842 group from the Indian subcontinent: expanded description and range extension of Trimeresurus salazar, redescription of Trimeresurus septentrionalis and rediscovery of historical specimens of Trimeresurus davidi (Reptilia: Viperidae)
FIGURE 6. Trimeresurus salazar NHMUK 1937.3.1.14 from 'Nagpur, Central Province', India. Photos: Gernot Vogel
FIGURE 5 in A review of records of the Trimeresurus albolabris Gray, 1842 group from the Indian subcontinent: expanded description and range extension of Trimeresurus salazar, redescription of Trimeresurus septentrionalis and rediscovery of historical specimens of Trimeresurus davidi (Reptilia: Viperidae)
FIGURE 5. Trimeresurus salazar live adult males showing intraspecific variation in the intensity of red lateral striping—top: individual with bold and thick red stripe from Byrnihat, Meghalaya (Photos: Ashok K. Mallik); above: individual with obscure and thin red stripe from Kanha, Madhya Pradesh. (Photo: Yajuvendra Upadhyaya).
FIGURE 3 in A review of records of the Trimeresurus albolabris Gray, 1842 group from the Indian subcontinent: expanded description and range extension of Trimeresurus salazar, redescription of Trimeresurus septentrionalis and rediscovery of historical specimens of Trimeresurus davidi (Reptilia: Viperidae)
FIGURE 3. Trimeresurus salazar live uncollected subadult males from Jashpur, India. Photos: Vivek Sharma
FIGURE 1 in A review of records of the Trimeresurus albolabris Gray, 1842 group from the Indian subcontinent: expanded description and range extension of Trimeresurus salazar, redescription of Trimeresurus septentrionalis and rediscovery of historical specimens of Trimeresurus davidi (Reptilia: Viperidae)
FIGURE 1. Map of the Indian subcontinent showing newly recorded / identified distribution records of (i). Trimeresurus salazar (black; field records: squares, specimen records: dots); (ii). T. septentrionalis (white); type localities with a dot in the middle (iii). T. davidi (encircled—corrected locality / X—incorrect locality)
FIGURE 4 in A review of records of the Trimeresurus albolabris Gray, 1842 group from the Indian subcontinent: expanded description and range extension of Trimeresurus salazar, redescription of Trimeresurus septentrionalis and rediscovery of historical specimens of Trimeresurus davidi (Reptilia: Viperidae)
FIGURE 4. Trimeresurus salazar live uncollected adult females from Jashpur and Bilaspur (Kanan Pendari Zoo) India. Photos: Vivek Sharma
FIGURE 3 in New Zealand forest-dwelling skinks of the Oligosoma oliveri (McCann) species-complex (Reptilia: Scincidae): reinstatement of O. pachysomaticum (Robb) and an assessment of historical distribution ranges
FIGURE 3. Two examples of Oligosoma pachysomaticum (Robb) from Green Island in the Mercury Island group, east of Coromandel Peninsula (photos: Tony Whitaker).
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.