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82 results for “local extinction”
The local extinction of Cedrus atlantica in the Iberian Peninsula could have been completed due to biological interaction
<p>This data set is used to explore the possibility that <em>Cedrus atlantica</em> (Endl.) Carrière and <em>Pinus nigra</em> Arnold could have interacted in the past, mutually excluding each other in the areas with suitable conditions for both species and, where, ultimately, the one that was most competitive would remain. The species show very well differenciated niches and a distribution of their habitats segregated by continents (<em>P. nigra</em> in Europe and <em>C. atlantica</em> in Africa), which responds to differences in climatic affinities. However, the contact of their distributions in bordering areas suggests that <em>C. atlantica</em> maintained its presence in the Iberian Peninsula until recent times, and that <em>P. nigra</em> could have displaced it due to its higher prevalence on the continent.</p>
Supplementary material for "A drop in immigration results in the extinction of a local woodchat shrike population"
<p>Data files and code for all analyses and figures presented in the paper. The three data files are provided either in ASCII format (WoodchatCount.txt, WoodchatReproduction.txt, WoodchatCMR.txt) or in csv format (WoodchatCount.csv, WoodchatReproduction.csv, WoodchatCMR.csv). The code file (WoodchatCode.txt) is a space delineated text file. The code file is written for R, but some models are run in JAGS from R. The code file also contains the description of the data files and code for data management.</p>
Figure 1 in Bombus rubriventris: type locality, different histories of bumblebees in the New World, and a likely invertebrate extinction
Figure 1. Dorsal aspect of the holotype female of Bombus rubriventris showing the 'St. Domingue.' label (photo: NHM photo unit). Scale divisions in mm.
Monitoring demography of resurrected populations of locally extinct and extant species to investigate drivers of species loss
<p>Extinctions are predicted to rise by an order of magnitude over the next century. Although contemporary documented extinctions are uncommon, local extirpations likely provide hints about global extinction risks. Comparing responses to global change of locally extinct versus extant species pairs in a phylogenetic framework could highlight why certain species are more vulnerable to extinction than others and which anthropogenic changes are most relevant to their decline. As anthropogenic changes likely interact to affect population declines, demographic studies partitioning the effects of multifactorial stressors are needed but remain rare. I examine demographic responses to nitrogen addition and deer herbivory, two major drivers of species losses in grasslands, in experimental reintroductions of fourteen locally extinct and extant confamilial native plants from Michigan prairies. Nitrogen consistently reduces survival, especially in locally extinct species, and growth of locally extinct species benefits less from nitrogen than growth of extant species. Nitrogen reduces population growth rates, largely via reductions in survival. Deer herbivory, meanwhile, had inconsistent effects on vital rates among species and did not affect population growth. Nitrogen and herbivory rarely interacted to affect vital rates. These results link community-level patterns of species loss under nitrogen addition to the population-level processes underlying those losses.</p>
Regional and local factors interact to shape colonization and extinction dynamics of invasive Hydrilla verticillata in a patchy landscape
<p>Understanding the response of species to global change requires disentangling the drivers of their distributions across landscapes. Colonization and extinction processes, shaped by the interplay of landscape-level and local patch-level factors, are key determinants of these distributions. However, disentangling the influence of these factors, when larger-scale processes manifest at local scales, remains a challenge. We addressed this challenge by investigating the colonization and extinction dynamics of the aquatic plant, <em>Hydrilla verticillata</em>, in a complex riverine rock pool system. This system, with hundreds of rock pools experiencing varying flooding frequencies, provided a natural laboratory to examine how a single landscape-level disturbance can differentially impact colonization and extinction depending on local patch characteristics to shape species distributions. Using five years of data across over 500 sites and more than 5,000 surveys, we employed dynamic occupancy models to model colonization, extinction, and changes in <em>Hydrilla</em> patch occupancy while accounting for imperfect detection. Our results revealed that larger, infrequently flooded pools closer to the river were more likely to be colonized. In contrast, local extinction of Hydrilla was more likely in smaller pools closer to the river that flooded frequently. These findings underscore the importance of considering context-dependence in species distribution models. The same landscape-level disturbance (flooding) had opposing effects on colonization and extinction, with the direction and magnitude of these effects varying with local patch characteristics. Our study highlights the need for integrating local and landscape-level factors, and considering how larger-scale processes play out at the patch level, to understand the complex dynamics that shape species distributions.</p>
Fig. 2 in Typification of the name Cistus × skanbergii Lojac., a rare rockrose extinct in its type locality
Fig. 2 - Label of the specimen of Cistus × skanbergii collected by Gussone and kept at the Herbarium of Palermo (PAL76127; photo credit: S. Pasta). / Etichetta del campione di Cistus × skanbergii raccolto da Gussone e conservato presso l'Erbario di Palermo (PAL76127; foto: S. Pasta)
Fig. 1 in Typification of the name Cistus × skanbergii Lojac., a rare rockrose extinct in its type locality
Fig. 1 - Specimen of Cistus × skanbergii kept at the Herbarium of Geneva (G004201289) (photo credit: Conservatoire et Jardin botaniques de la Ville de Genève). / Campione di Cistus × skanbergii conservato presso l'Erbario di Ginevra (G004201289) (foto: Conservatoire et Jardin botaniques de la Ville de Genève).
Fig. 3 in Typification of the name Cistus × skanbergii Lojac., a rare rockrose extinct in its type locality
Fig. 3 - Specimen of Cistus × skanbergii collected by Gussone and kept at the Herbarium of Naples (NAP0002000; photo credit: Herbarium of Naples). / Campione di Cistus × skanbergii raccolto da Gussone e conservato presso l'Erbario di Napoli (NAP0002000; foto: Erbario di Napoli).
FIGURE 4 in The presence of Wilfredomys oenax (Rodentia: Cricetidae: Sigmodontinae) in São Paulo state, southeastern Brazil: a locally extinct species?
FIGURE 4: Map of the range distribution of Wilfredomys oenax. Numbered points correspond to known southeastern records from: (1) Ubatuba, São Paulo (Present work), (2) Abismo Iguatemi, Apiaí city, São Paulo (Castro & Langer, 2011), (3) Curitiba, Paraná (ÁvilaPires, 1960). Dotted circles represent data from live caught specimens and cross represents fossil records. The gray shaded area is the geographic distribution of the species suggested by IUCN (adapted from Vieira & Christoff, 2008), been considered extinct at Curitiba (heavy gray shaded area). Full solid lines indicate Brazilian Federal state boundaries; solid light gray lines indicate major rivers.
FIGURE 3 in The presence of Wilfredomys oenax (Rodentia: Cricetidae: Sigmodontinae) in São Paulo state, southeastern Brazil: a locally extinct species?
FIGURE 3: Detailed views of morphology of the skull (A-E and I), mandible (F) and upper (G) and lower (H) left molars of Wilfredomys oenax (based on MZUSP 6281, from Ubatuba, SP). Labeled structures and region includes: auditory bulla (ab), anteroflexus (af), anteroloph (al), angular notch (an), angular process (ap), anterolabial conule (aac), anterolingual conule (alc), anteromedium flexus (amf), buccinator-masticatory foramen (bmf), condyloid process (cp), capsular process of the lower incisor alveolus (cap), coronoid process (crp), incisive foramina (if), frontal (fr), foramen ovale accessorius (foa), mesopterygoid fossa (ms), nasal (na), parapterygoid fossa (pt), palatal pits (plt), sigmoid notch (sn), zygomatic notch (zn), zygomatic plate (zp), anterocone (AR), paracone (PA), protocone (PT). White arrow indicate shallow depression along the frontals. Black bars indicate comparatives width (C) and alignment (D) between structures. Note the confluence between bmf and foa as a result of the absence of bony strut on the alisphenoid (see Voss, 1991: fig. 12), and that main molar cups are typed in upper case letters with two letter abbreviation.
FIGURE 2 in The presence of Wilfredomys oenax (Rodentia: Cricetidae: Sigmodontinae) in São Paulo state, southeastern Brazil: a locally extinct species?
FIGURE 2: Dorsal and ventral views of the skin of Wilfredomys oenax (MZUSP 6281) from Ubatuba, São Paulo. This skin was erroneously given a tag with the number MZUSP 7501, but note a second tag with 6281 on it, which corresponds to the skull MZUSP 6281. Scale 15 mm.
FIGURE 1 in The presence of Wilfredomys oenax (Rodentia: Cricetidae: Sigmodontinae) in São Paulo state, southeastern Brazil: a locally extinct species?
FIGURE 1: Dorsal, ventral, and lateral views of the cranium and lateral and dorsal views of the mandible of Wilfredomys oenax (MZUSP 6281) from Ubatuba, São Paulo. Scale 10 mm.
Figure 4 in Nikolaj Livanow's historical collection sheds new light on potential local extinctions and host association in Hirudinea
Figure 4. Historical sample of Acanthobdella peledina Grube, 1851 (lot EEZM 387 "Onega Lake. N. Livanow, 1902"). These specimens are the only preserved part of Livanow's general sample that was used for preparation of the classical monograph on this species (Livanow 1906). (a) Anterior part of the incomplete specimen and trace of its lost posterior part by albumin-gelatin gel. (b-d) Three complete specimens. Scale bar = 2.5 mm. Photo: T. A. Eliseeva and A. V. Bespyatykh.
Figure 3 in Nikolaj Livanow's historical collection sheds new light on potential local extinctions and host association in Hirudinea
Figure 3. Extract from the Systematic Catalogue of Collections and Preparations of Invertebrates of the Zootomy Cabinet Museum of the Imperial Kazan University (Meyer 1915). (a) Title page. (b) Selected entries [In Russian] for the specimens under discussion with our English translations and remarks (red letters). Photos: T. A. Eliseeva and A. V. Bespyatykh.
Figure 2 in Nikolaj Livanow's historical collection sheds new light on potential local extinctions and host association in Hirudinea
Figure 2. Collection vials with selected samples from the historical Hirudinea collection (EEZM): (a) Acanthobdella peledina Grube, 1851 (lot EEZM 387 "Onega Lake. N. Livanow, 1902"); (b) Hirudo medicinalis Linnaeus, 1758 (lot EEZM 406-407 "Kazan. E. Meyer, 1891"); and (c) Glossiphonia grubei (Lukin & Epshtein, 1959) (lot EEZM 397 "Lake Baikal (Maloe More [Strait]). V. Garjaew, 1899"). Photos: T. A. Eliseeva and A. V. Bespyatykh.
Figure 1 in Nikolaj Livanow's historical collection sheds new light on potential local extinctions and host association in Hirudinea
Figure 1. Cabinet with the historical Hirudinea collection in the EEZM – Edward Eversman Zoology Museum and Herbarium, Kazan (Volga Region) Federal University (formerly Zootomy Cabinet Museum of the Imperial Kazan University), prepared by Nikolaj A. Livanow and Eduard A. Meyer. The red numbers indicate exposition vials with samples of Acanthobdella peledina Grube, 1851 (1), Hirudo medicinalis Linnaeus, 1758 (2), and Glossiphonia grubei (Lukin & Epshtein, 1959) (3). Photo: T. A. Eliseeva and A. V. Bespyatykh.
Fig. 2 in Conservation Of The Javan Gibbon Hylobates Moloch: Population Estimates, Local Extinctions, And Conservation Priorities
Fig. 2. Relation between number of groups calling per day and number of census days in the Telaga Warna Nature Reserve (Sept 1999) and Lingo Asri, Dieng mountains (Sept 1998).
Fig. 1 in Conservation Of The Javan Gibbon Hylobates Moloch: Population Estimates, Local Extinctions, And Conservation Priorities
Fig. 1. Current distribution of the Javan gibbon Hylobates moloch. Based on Kappeler, 1984, Asquith et al., 1995, Nijman 2001b, and present study. All areas where the species' presence has been confirmed are indicated in black; areas where the species' possible presence was reported by Andayani et al. (1999) are indicated in white. The three main study areas are: A, Telaga Warna Nature Reserve; B, Gunung Gede Pangrango National Park; C, Dieng mountains. The insert shows Java with all remaining forest patches on the island.
Fig. 3 in Forensic bioacoustics? The advertisement calls of two locally extinct frogs from Colombia
Fig. 3. Full-scale audiospectrogram (top) and oscillogram (bottom) of the advertisement call of Gastrotheca guentheri. The note duration (nd), dominant frequency (df), and fundamental frequency (ff) are indicated.
Fig. 1 in Forensic bioacoustics? The advertisement calls of two locally extinct frogs from Colombia
Fig. 1. Geographic location (A) and general view (B) of Reserva Natural La Planada (Department of Nariño, Colombia; (C) Paruwrobates andinus and (D) Gastrotheca guentheri from Reserva Natural La Planada, Colombia. Photos by I. De la Riva (B) and P.A. Burrowes (C–D).
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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)
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.