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799 results for “island endemism”
Figure 9 from: Wagner W, Clark J, Lorence D (2014) Revision of endemic Marquesas Islands Bidens (Asteraceae, Coreopsideae). PhytoKeys 38: 37-67. https://doi.org/10.3897/phytokeys.38.7609
Figure 9 - Bidens wichmanii W.L. Wagner, J.R. Clark & Lorence A Distal part of plant B Head showing rays and involucral bracts (outer series) C Head post-flowering showing involucral bract D Inner involucral bract E Ray corolla F–G Disk corolla H Disk corolla longitudinal section I Achene. Drawn from Wood 10140 (isotype, US) [A, C, I], and Perlman 10152 (US) [B, D–G, H].
Figure 2 from: Wagner W, Clark J, Lorence D (2014) Revision of endemic Marquesas Islands Bidens (Asteraceae, Coreopsideae). PhytoKeys 38: 37-67. https://doi.org/10.3897/phytokeys.38.7609
Figure 2 - Bidens bipontina Sherff (A–C). A Distal part of plant B Head post-flowering showing involucral bracts and apex of achenes C Head showing rays and apex of disk florets. Drawn from Perlman & Wood 15028 (US), except B from Wood and Perlman 4601 (US). Images used to augment illustration from field shots of Wood and Perlman 4601 and Perlman and Wood 15021. Bidens henryi Sherff (D–F). D Distal part of plant E Head post-flowering showing involucral bracts F Head showing rays and disk florets. Drawn Wood 10038 (US), except F from Perlman 14868 (US). Images from field shots used to augment illustration of Wood 10038, Wagner 6219 and Lorence & Price 8932.
Supplementary material 1 from: Menchetti M, Schifani E, Alicata A, Vila R (2023) Quantitative morphology and mtDNA reveal that Lasius maltaeus is not endemic to the Maltese Islands (Hymenoptera, Formicidae). Journal of Hymenoptera Research 95: 129-142. https://doi.org/10.3897/jhr.95.96365
The collecting data and voucher identifiers of the specimens
Fig. 4 in Taxonomic Assessment of a Threatened Large Millipede Endemic to the Southern Ryukyu Islands, Japan: a New Species of Spirobolus (Diplopoda: Spirobolida: Spirobolidae) from the Yaeyama Islands
Fig. 4. Spirobolus akamma sp. nov., paratype male (KUZ Z4328; A, E–G), paratype female (KUZ Z4332; B), and holotype male (KUZ Z4329; C, D, H). A, Head, collum and body rings 2–7, lateral view; B, body ring 2, anterior view; C, caudal end with porous rings + telson, lateral view (terminal four leg pairs removed); D, telson, ventral view (terminal four leg pairs removed); E, 1st leg pair, anterior view; F, 2nd leg pair, posterior view; G, 3rd leg pair, anterior view; H, left leg of 15th leg pair, anterior view.
Data from: The effects of archipelago spatial structure on island diversity and endemism: predictions from a spatially-structured neutral model
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Breeding and feeding habitat selection by an island endemic bird may increase its vulnerability to climate change
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Data from: Do endemic mushrooms on oceanic islands and archipelagos support the theory of island biogeography?
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Projected climate change threatens significant range contraction of Cochemiea halei (Cactaceae), an island endemic, serpentine adapted plant species at risk of extinction
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Figure 10 from: Breuil M, Schikorski D, Vuillaume B, Krauss U, Morton MN, Corry E, Bech N, Jelić M, Grandjean F (2020) Painted black: Iguana melanoderma (Reptilia, Squamata, Iguanidae) a new melanistic endemic species from Saba and Montserrat islands (Lesser Antilles). ZooKeys 926: 95-131. https://doi.org/10.3897/zookeys.926.48679
Figure 10 Iguana melanoderma sunbathing at dawn on the Windward coast of Saba.
Data from: Genetic diversity of the endemic Canary Island pine tree, Pinus canariensis (Ph.D. thesis)
The Canary Island pine, Pinus canariensis, is an endemic tree that forms one of the main forest ecosystems within the archipelago, and whose distribution has been reduced in the last five centuries by clear cutting for the extraction of timber and tar. It was in the XXth century that exploitation declined and reforestation programs were brought forward for the restoration of an ecosystem that harbours a number of endangered endemic species of plants and animals. In addition to reforestation efforts, an understanding of population genetic processes is also necessary for the successful conservation management of the Canarian pine forest, particularly in light of gathering evidence for local adaptation. In this thesis historical and contemporary gene flow within P. canariensis was studied with nuclear and chloroplast microsatellite markers. High immigration rates (0.68–0.75) were estimated as expected for an outcrossing wind-pollinated tree. Nevertheless, significant population differentiation (FST=0.019, RST=0.044) was detectable for sites separated by only a few kilometres. Within the context of reforestation programs the high levels of gene flow detected would appear to have a positive effect, by facilitating the immigration of local alleles from natural stands into potentially genetically depauperate first generation gene pools of reforested stands. Historical population growth was revealed with chloroplast microsatellites for most populations of P. canariensis. Population expansions for the pine parasite weevil Brachyderes rugatus were also detected, broadly coinciding with the population expansions within the Canary Island pine forests. Given the estimated times of expansion, these population demographic increases would seem likely related to the process of colonisation of newly emerged islands or local patches after volcanic disturbance. Detection and dating of these expansions from chloroplast microsatellites was, to some degree, negatively affected by homoplasy (i.e. parallel and back mutations). Coalescent simulations of the evolution of chloroplast microsatellites were applied to study the effects of homoplasy in the statistical analysis of population structuring. Measures of genetic diversity based on number of haplotypes and measures based on genetic distances were differently affected. Genetic distances were underestimated but were proportional to the actual value. These effects help to explain the lower performance of statistical analyses for the detection and dating of population expansions. Further research on the effects of homoplasy in the analysis of population differentiation using chloroplast microsatellites is essential.
Figure 26 from: Crespo LC, Silva I, Enguídanos A, Cardoso P, Arnedo M (2022) Island hoppers: Integrative taxonomic revision of Hogna wolf spiders (Araneae, Lycosidae) endemic to the Madeira islands with description of a new species. ZooKeys 1086: 84-135. https://doi.org/10.3897/zookeys.1086.68015
Figure 26 Plate with photographs of the lateral view of the leg I for easily diagnosable species.
Figure 13 from: Crespo LC, Silva I, Enguídanos A, Cardoso P, Arnedo M (2022) Island hoppers: Integrative taxonomic revision of Hogna wolf spiders (Araneae, Lycosidae) endemic to the Madeira islands with description of a new species. ZooKeys 1086: 84-135. https://doi.org/10.3897/zookeys.1086.68015
Figure 13 Photograph of H. ingens. Female specimen in the field. Photograph credit Pedro Cardoso.
Figure 10 from: Crespo LC, Silva I, Enguídanos A, Cardoso P, Arnedo M (2022) Island hoppers: Integrative taxonomic revision of Hogna wolf spiders (Araneae, Lycosidae) endemic to the Madeira islands with description of a new species. ZooKeys 1086: 84-135. https://doi.org/10.3897/zookeys.1086.68015
Figure 10 Photograph of H. heeri. Female specimen in captivity. Photograph credit Emídio Machado.
Data from: Island Biogeography, the effects of taxonomic effort and the importance of island niche diversity to single island endemic species
Island biogeography theory is fundamentally reliant on measuring the number of species per island and hence has taxonomy at its foundation. Yet as a metric used in tests of the theory, island species richness (S) has varied with time according to the level of taxonomic effort (a function of the rate of finding and describing species). Studies using a derivative of S, single-island endemic species richness (SIE S), may be prone to change in taxonomic effort. Decreases or increases in species numbers resulting from taxonomic revision or increased sampling are likely to have a large effect on values of SIE S, as they tend to be smaller than total S for the same island. Using simple biogeography models, we analysed estimates of SIE S in plants, land snails, beetles, and fungi from comprehensive data sets for eight island groups, produced species accumulation curves and applied Bayesian regression over five time periods. Explanatory power differed across taxa, but area and island age were not always the best explanatory variables, and niche diversity appeared to be important. Changing levels of SIE S over time had different effects on models with different taxa and between island archipelagos. The results indicated that the taxonomic effort that determines SIE S is important. However, as this cannot often be quantified, we suggest Bayesian approaches should be more useful than frequentist methods in evaluating SIE S in island biogeography theory. Fundamentally, the article highlights the importance of taxonomy to theoretical biogeography.
Figure 1 from: Knapp S, Vorontsova M (2013) From introduced American weed to Cape Verde Islands endemic: the case of Solanum rigidum Lam. (Solanaceae, Solanum subgenus Leptostemonum). PhytoKeys 25: 35-46. https://doi.org/10.3897/phytokeys.25.4692
Figure 1 - Habit of Solanum rigidum on the Cape Verde Islands. Photograph courtesy of MC Duarte.
Figure 1 from: Wagner W, Clark J, Lorence D (2014) Revision of endemic Marquesas Islands Bidens (Asteraceae, Coreopsideae). PhytoKeys 38: 37-67. https://doi.org/10.3897/phytokeys.38.7609
Figure 1 - Map of the Marquesas Islands.
Data from: Genetic diversity of the endemic Canary Island pine tree, Pinus canariensis (Ph.D. thesis)
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Data from: Island Biogeography, the effects of taxonomic effort and the importance of island niche diversity to single island endemic species
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Figure 4 in Rediscovery of the Hawaiian endemic bark beetle Xyleborus pleiades Samulesonı 1981 on Moloka'iı with records of three new exotic bark beetles for the island (Coleoptera: Curculionidae: Scolytinae: Xyleborini)
Figure 4. Exotic xyleborine bark beetles newly recorded in Moloka'i. (a) Lateral view of female Xyleborus affinis collected at TNC Kamakou, Moloka'i, 12 October 2018. Length: 2.67 mm. (b) Lateral view of female Xyleborinus saxesenii collected at TNC Kamakou, Moloka'i, 12 October 2018. Length: 2.18 mm. (c) Lateral view of female Xylosandrus crassiusculus collected at TNC Kamakou, Moloka'i, 12 October 2018. Length: 2.92 mm. Photographs by C.P.D.T. Gillett.
Figure 1 in Rediscovery of the Hawaiian endemic bark beetle Xyleborus pleiades Samulesonı 1981 on Moloka'iı with records of three new exotic bark beetles for the island (Coleoptera: Curculionidae: Scolytinae: Xyleborini)
Figure 1. TNC Kamakou Preserve on Moloka'i. (a) View of the southern face of East Moloka'i Volcano rising to above 1500 m. TNC Kamakou Preserve lies on the upper section of the volcano, partially obscured by cloud in the photograph. (b) View over native mesic and humid tropical forest at approximately 1150 m elevation in TNC Kamakou Preserve. The forest is dominated by ʻōhiʻa lehua (Metrosideros polymorpha), with a diverse understory of other native plants including ōlapa (Cheirodendron trigynum).
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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)
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
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OpenNeuro
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