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1,069 results for “karst”
Data from: Extensive admixture among karst-obligate salamanders reveals evidence of recent divergence and gene exchange through aquifers
<p>Karst ecosystems often contain extraordinary biodiversity, but the complex underground aquifers of karst regions present challenges for assessing and conserving stygobiont diversity and investigating their evolutionary history. We examined the karst-obligate salamanders of the Eurycea neotenes species complex in the Edwards Plateau region of central Texas using population genomics data to address questions about population connectivity and the potential for gene exchange within the underlying aquifer system. The Eurycea neotenes species complex has historically been divided into three nominal species, but their status, and spatial extent of species ranges, have remained uncertain. We discovered evidence of extensive admixture within the species complex and with adjacent lineages. We observed relatively low levels of differentiation among all sampling localities which supports the hypothesis of recent divergence. Nominal taxonomy, aquifer region and geography accounted for a modest amount of the overall population genomic variation, but these predictors were largely collinear and difficult to disentangle. Importantly, the taxonomy of the three nominal species does not reflect the admixture apparent in clustering analyses. Inference of migration events revealed a complex pattern of gene exchange, suggesting that Eurycea salamanders have a dynamic history of dispersal through the aquifer system. These results highlight the need for greater understanding of how stygobiont populations are connected via dispersal and gene exchange through karst aquifers.</p>
Fig. 4 in Testate Amoebae in Karst Caves of the Dinaric Arc (South-Eastern Europe) with a Description of Centropyxis bipilata sp. nov.
Fig. 4. Biodiversity of protozoa in various cave habitat types (TAM – testate amoebae, CIL – ciliates, NAM – naked amoebae, FLG – heterotrophic flagellates, HEL – heliozoans)
Fig. 3 in Testate Amoebae in Karst Caves of the Dinaric Arc (South-Eastern Europe) with a Description of Centropyxis bipilata sp. nov.
Fig. 3. Examples of species found during this research (A. Centropyxis elongata; B. Lacogromia sp.; C. Cyclopyxis sp.; D–E. Paramphitrema sp.; F. Diplochlamys sp.; G–H. cf. Conicocassis sp.; Scale bars B 100 µm, all other 20 µm)
Fig. 5 in Testate Amoebae in Karst Caves of the Dinaric Arc (South-Eastern Europe) with a Description of Centropyxis bipilata sp. nov.
Fig. 5. Centropyxis bipilata sp. nov. A–C. Ventral view, arrows point to the position of the struts; D, F. Frontal view, showing the two struts connected to the dorsal part; E. Side view, showing one strut. A, C–E stacked images. Scale bars: 20 µm.
Fig. 1 in Damp Water Stream Impact For The Germination Of Norway Spruce (Picea Abies (L.) H. Karst.) Seeds
Fig. 1. Sowing scheme of Norway Spruce seeds (K – control sample – chemical treater was used for the seeds; 1s, 2s, 3s, 4s – damp water steam was used for the seeds).
Fig. 6 in Population density and habitat of an endangered cave fish Eigenmannia vicentespelaea Triques, 1996 (Ostariophysi: Gymnotiformes) from a karst area in central Brazil
Fig. 6. Population densities of Eigenmannia trilineata from rio da Lapa, São Domingos karst area, central Brazil, observed from dusk until night phase during two nights (April and August 2001). Asterisk indicates that no sample was recorded in this period at April 2001.
Fig. 4 in Population density and habitat of an endangered cave fish Eigenmannia vicentespelaea Triques, 1996 (Ostariophysi: Gymnotiformes) from a karst area in central Brazil
Fig. 4. Box-plots showing the means and standard deviations (Sd) of population densities data for Eigenmannia vicentespelaea along the years 1999, 2000 and 2001 (a) and between the dry seasons, independent of the years (b) BDS, beginning of dry season; MDS, middle of dry season; EDS, end of dry season.
Fig. 7 in Population density and habitat of an endangered cave fish Eigenmannia vicentespelaea Triques, 1996 (Ostariophysi: Gymnotiformes) from a karst area in central Brazil
Fig. 7. Box-plots showing means and standard deviations of pH (a) conductivity (b) and temperature (c) from the São Vicente II cave stream in the dry seasons of 1999, 2000 and 2001 (circle and asterisk represent outliers).
Fig. 3 in Population density and habitat of an endangered cave fish Eigenmannia vicentespelaea Triques, 1996 (Ostariophysi: Gymnotiformes) from a karst area in central Brazil
Fig. 3. Monthly rainfall recorded in the years of 1999, 2000 and 2001. Source: INMET, Posse municipality, Goiás State, central Brazil.
Fig. 5 in Population density and habitat of an endangered cave fish Eigenmannia vicentespelaea Triques, 1996 (Ostariophysi: Gymnotiformes) from a karst area in central Brazil
Fig. 5. Biplot resulting from Principal Component Analysis with seven variables. Dark circles represent sampling units.
Data and results for manuscript "Imaging groundwater infiltration dynamics in karst vadose zone with long-term ERT monitoring"
<p>This data set contains raw and inverted data from an Electrical Resistivity Tomography (ERT) monitoring experiment conducted over a period of three years at the Rochefort Cave Laboratory (RCL) site in South Belgium. It highlights variable hydrodynamics in the karst vadose zone of Lorette Cave. More conventional hydrological measurements (drip discharge monitoring, soil moisture and water conductivity data sets) are also included in the package, which aims at provide a thorough understanding of the groundwater infiltration. Seasonal changes affect all the imaged areas leading to increases in resistivity in spring/summer attributed to enhanced evapotranspiration, whereas winter is characterised by a general decrease in resistivity associated with a groundwater recharge of the vadose zone. This study provides detailed images of the sources of drip discharge spots traditionally monitored in caves and aims to support modelling approaches of karst hydrological processes.</p>
Figure 2 in Contribution to the knowledge of Brazilian troglobitic Pseudoscorpiones (Arachnida): description of Pseudochthonius lubueno sp. nov. (Chthoniidae) from Serra do Ramalho karst area, state of Bahia, Brazil
Figure 2. Gruna da Altina cave: (A) details of the microhabitat of P. lubueno sp. nov., Photo A. Gambarini; (B) Guano piles, a typical substrate of occurrence of the new species, Photo: M.E. Bichuette.
Figure 1 in Contribution to the knowledge of Brazilian troglobitic Pseudoscorpiones (Arachnida): description of Pseudochthonius lubueno sp. nov. (Chthoniidae) from Serra do Ramalho karst area, state of Bahia, Brazil
Figure 1. Map showing the distribution of Pseudochthonius lubueno sp. nov. in Gruna da Altina cave, located in Serra do Ramalho, Bahia, and the distribution of Brazilian epigean and hypogean Pseudochthonius species, with the troglobitic representatives
Figure 4 in Contribution to the knowledge of Brazilian troglobitic Pseudoscorpiones (Arachnida): description of Pseudochthonius lubueno sp. nov. (Chthoniidae) from Serra do Ramalho karst area, state of Bahia, Brazil
Figure 4. Pseudochthonius lubueno sp. nov., male holotype (A-F) and female paratype (G): (A) carapace dorsal view; (B) detail of the anterior margin, with the epistome; (C) left chelicera; (D) rallum; (E) coxal spines of coxae I–II; (F) genital opening; (G) genital opening, paratype. Scale bars: A, C, E, F-G = 0.05 mm, B = 0.2 mm, D = 0.02 mm.
Figure 2 in A new leafhopper genus of Erythroneurini (Hemiptera, Cicadellidae, Typhlocybinae) from karst area in southwestern China
Figure 2 Anuihuajianga pyramidalis Zhang & Song gen. et sp. nov., male A) Genital capsule, lateral view B) Pygofer lobe, lateral view C) Anal tube with appendages, lateral view D) Dorsal pygofer process, lateral view E) Subgenital plate, lateral view F) Style, ventral view G) Aedeagus, ventral view H) Aedeagus, lateral view I) Connective, dorsal view J) Abdominal apodemes.
Figure 1 in A new leafhopper genus of Erythroneurini (Hemiptera, Cicadellidae, Typhlocybinae) from karst area in southwestern China
Figure 1 Anuihuajianga pyramidalis Zhang & Song gen. et sp. nov. A) Dorsal habitus B) Lateral habitus C) Head and thorax, dorsal view D) Face E) Forewing F) Hind wing.
Fig. 2 in Genetic and morphological differentiation among populations of the narrowly endemic and karst forest-adapted Pilea pteridophylla (Urticaceae)
Fig. 2 Morphological variation among individuals of Pilea pteridophylla sampled along its distribution range in the tropical karst forest of southern Mexico. Plot of individual scores for the first two components of the principal component analysis using morphological data. Coloured symbols represent the two populations recognized for the species: red circles, Tabasco; and blue circles, Chiapas. Ellipses correspond to the 95% confidence intervals estimated for each population. The lines represent the dispersion of the individuals within each population
Fig. 3 in Genetic and morphological differentiation among populations of the narrowly endemic and karst forest-adapted Pilea pteridophylla (Urticaceae)
Fig. 3 Statistical parsimony networks of rps16-trnQ, trnL-trnF and rps16-trnQ + trnL-trnF dataset using the gaps as missing data. Coloured symbols represent the two populations recognized for the species: red circles, Tabasco; and blue circles, Chiapas. Open-white circles represent the number of mutational steps between haplotypes. The size of the circles is proportional to the frequency of each haplo-
Fig. 1 in Genetic and morphological differentiation among populations of the narrowly endemic and karst forest-adapted Pilea pteridophylla (Urticaceae)
Fig. 1 Mountain karst forests of Mexico and the studied species Pilea pteridophylla A. K. Monro (Urticaceae). A Geographic distribution of the Mountain karst forests of Mexico. B Individual from the Chiapas population. C Individual from the Tabasco population
Text-fig. 1. A – outline map of the Slovak Republic, Gombasek Quarry marked; B – Gombasek needle – Gombasecká ih a in the Gombasek Quarry, the sample was collected at the right side of the pillar; C – typical lithology, gray coloured clay. in Tracing Of Palynomorphs In The Eastern Slovakian Karst
Text-fig. 1. A – outline map of the Slovak Republic, Gombasek Quarry marked; B – Gombasek needle – Gombasecká ih a in the Gombasek Quarry, the sample was collected at the right side of the pillar; C – typical lithology, gray coloured clay.
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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.