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1,592 results for “Amazonian”
Figs. 1 A-C in Pseudofilamentous desmids (Zygnematophyceae) from an Amazonian floodplain lake (Macapá, AP, Brazil)
Figs. 1 A-C. Geographic localization of the Curralinho Lake, "Ressaca" area, Macapá, Amapá, Brazil. A. Localization of the Amapá state (AP) in Brazil (green color); B. Curiaú River basin, located in the Curiaú Enviroment Protection Area is highlighted in black; C. The sampling station at Curralinho Lake is a red circle.
Fig. 6 in Structural biology and evolution in the monotypic Amazonian palm Wendlandiella (Arecoideae: Chamaedoreeae)
Fig. 6. – Pistillate flower of Wendlandiella gracilis. A. Pistillate flower at anthesis (var. gracilis); B. Upper view of pistillate flower (var. polyclada); C. Gynoecium (var. polyclada); D. Corolla and gynoecium (var. polyclada); E. Flower bud, LS (var. polyclada); F. Flower bud, TS (var. polyclada).
Fig. 7 in Structural biology and evolution in the monotypic Amazonian palm Wendlandiella (Arecoideae: Chamaedoreeae)
Fig. 7. – Fruits and seeds of Wendlandiella gracilis. A. Ripe fruit (var. gracilis); B. Ripe fruit (var. simplicifrons); C. Seed (var. gracilis). [Plant cultivated by H. Lorenzi in the Instituto Plantarum Botanical Garden, Campinas, Brazil] [Photos: A–B: H. Lorenzi; C: M. Caixeta]
Fig. 5 in Structural biology and evolution in the monotypic Amazonian palm Wendlandiella (Arecoideae: Chamaedoreeae)
Fig. 5. – Staminate flower in Wendlandiella gracilis. A. Anthesis (var. polyclada); B. Androecium displaying filaments and anthers (var. gracilis); C. Pistillode (var. gracilis); D. Calyx (var. gracilis); E. TS at basal level (var. polyclada); F. Pollen intermixed with raphide idioblasts (var. gracilis).
Fig. 2 in Structural biology and evolution in the monotypic Amazonian palm Wendlandiella (Arecoideae: Chamaedoreeae)
Fig. 2. – Root anatomy in Wendlandiella gracilis var. polyclada. A. Apex of the root, LS; B. Elongation area of root tip, CS; C. First order root, detail of raphide idioblasts, CS; D. First order root, detail of inner cortex starch containing cells, LS-CS.; E. Rhizodermis and exodermis, CS; F. Vascular cylinder and endodermis layer, CS. [Abbreviations: en, endodermis; ex, exodermis; fi, fiber; ic, inner cortex; me, meristematic zone; oc, outer cortex; pc, pith vascular cylinder; pe, pericycle; ph, phloem; rc, root cap; rh, rhizoderm; ri, raphide idioblast; vc, vascular cylinder; xy, xylem]
Fig. 3 in Structural biology and evolution in the monotypic Amazonian palm Wendlandiella (Arecoideae: Chamaedoreeae)
Fig. 3. – Leaf morphology and anatomy in Wendlandiella gracilis. A. Leaf morpho-types: var. gracilis: 1. adaxial side, 2. abaxial side; var. polyclada: 3. adaxial side, 4. abaxial side; var. simplicifrons: 5. adaxial side, small-leaved morpho-type, 6. adaxial side, large-leaved morpho-type; B. Leaf blade stomata, abaxial side; C. Leaf blade surface, abaxial side; D. Lamina anatomy (var. polyclada), CS. [Abbreviations: ep, epidermis; fi, fiber bundles in contact with epidermal layer; mc, mesophyll cells with chloroplasts; mr, midrib; ri, raphide idioblast; vs, vascular bundles free of surface layers]
Fig. 4 in Structural biology and evolution in the monotypic Amazonian palm Wendlandiella (Arecoideae: Chamaedoreeae)
Fig. 4. – Inflorescence structure and flower arrangements in Wendlandiella gracilis. A. 1-order ramification; B. Proximal ramification in basal rachillae; C. 2-branched order ramification in basal rachillae; D. Solitary female flowers (var. polyclada); E. Male flowers in an acervulus of two alternating rows (var. gracilis); F. Male flowers in an unordered acervulate complex (var. gracilis).
Fig. 1 in Structural biology and evolution in the monotypic Amazonian palm Wendlandiella (Arecoideae: Chamaedoreeae)
Fig. 1. – Growth habit diversity in Wendlandiella gracilis. A. Schematic representation of the development of stems and major types of growth habit; B. Solitary growth habit (var. simplicifrons); C. Clustered growth habits (var. gracilis); D. Production of new plantlets from aerial stems (var. simplicifrons). [B: Balslev et al., 7677, AAU; C: Balslev et al., 7865, AAU] [Photos: B, C: H. Balslev; D: S. Zona, taken in Nongnooch Tropical Garden, Pattaya, Thailand]
FIGURE 3 in Species diversity and community structure of fruit-feeding butterflies (Lepidoptera: Nymphalidae) in an eastern amazonian forest
FIGURE 3: Whittaker plot (rank-abundance distribution) for the total sample of fruit-feeding butterflies in an eastern Amazonian forest. The y axis represents species abundance and the x axis ranks each species in order from most to least abundant.
FIGURE 1 in Species diversity and community structure of fruit-feeding butterflies (Lepidoptera: Nymphalidae) in an eastern amazonian forest
FIGURE 1: Location of Sítio Aguahy, in the eastern Amazon. (A) Maps of Brazil and the state of Maranhão, demonstrating the distribution of the Brazilian Amazon forest. (B) Dense rainforest (C) Secondary forest.
Fig. 4 in Structural biology and evolution in the monotypic Amazonian palm Wendlandiella (Arecoideae: Chamaedoreeae)
Fig. 4. – Inflorescence structure and flower arrangements in Wendlandiella gracilis. A. 1-order ramification; B. Proximal ramification in basal rachillae; C. 2-branched order ramification in basal rachillae; D. Solitary female flowers (var. polyclada); E. Male flowers in an acervulus of two alternating rows (var. gracilis); F. Male flowers in an unordered acervulate complex (var. gracilis). [Abbreviations: fRae, fertile rachillae; pb, peduncular bract; py, prophyll; sh, sheath; sRae, sterile rachillae]
Fig. 5 in Structural biology and evolution in the monotypic Amazonian palm Wendlandiella (Arecoideae: Chamaedoreeae)
Fig. 5. – Staminate flower in Wendlandiella gracilis. A. Anthesis (var. polyclada); B. Androecium displaying filaments and anthers (var. gracilis); C. Pistillode (var. gracilis); D. Calyx (var. gracilis); E. TS at basal level (var. polyclada); F. Pollen intermixed with raphide idioblasts (var. gracilis). [Abbreviations: aS, alternating stamens; fi, filament; oS, opposite stamens; pD, pistillode; pe, petal; ri, raphide idioblast; vb, vascular bundle]
Edge effects and vertical stratification of aerial insectivorous bats across the interface of primary-secondary Amazonian rainforest
<p><span>Edge effects - abiotic and biotic changes associated with habitat boundaries - are key drivers of community change in fragmented landscapes. Their influence is heavily modulated by matrix composition. With over half of the world's tropical forests predicted to become forest edge by the end of the </span><span>century, it is paramount that conservationists gain a better understanding of how tropical biota is impacted by edge gradients. Bats comprise a large fraction of tropical mammalian fauna and are demonstrably sensitive to habitat modification. Yet, </span><span>knowledge about how bat assemblages are affected by edge effects remains scarce</span><span>. Capitalizing on a whole-ecosystem manipulation in the Central Amazon, the aims of this study were to i) assess the consequences of edge effects for twelve aerial insectivorous bat species across the interface of primary and secondary forest and ii) investigate if the activity levels of these species differed between the understory and canopy and if they were modulated by distance from the edge</span><span>. Acoustic surveys were conducted along four 2-km transects each traversing equal parts of primary and ca. 30-year-old secondary forest. Five models were used to assess the changes in the relative activity of forest specialists (three species), flexible forest foragers (three species), and edge foragers (six species). Modelling results revealed no evidence of edge effects, except for forest specialists in the understory. No significant differences in activity were found between the secondary or primary forest but most species exhibited pronounced vertical stratification. Our study highlights that forest specialist bats are more edge-sensitive than both flexible forest and edge foraging bats and suggests that the influence of edge effects on aerial insectivorous bats may exceed 2 km. The absence of pronounced edge effects and the comparable activity levels between primary and old secondary forests indicates that old secondary forest can help ameliorate the consequences of fragmentation on tropical aerial insectivorous bats. </span></p>
Fig. 11 in Further dismemberment of Discocyrtus with description of a new Amazonian genus and a new subfamily of Gonyleptidae (Opiliones, Laniatores)
Fig. 11. Brazil and Guianas, showing parapatric distribution of the genera of Roeweriinae subfam. nov. Shaded areas in the background are Morrone's regionalization of the Neotropics ("provinces"; Morrone, 2014). ATL = Atlantic province; CER = Cerrado province; GUI = Guianan Lowlands province; MAD = Madeira province; PAR = Paraná Forest province; ROR = Roraima province.
Fig. 9 in Further dismemberment of Discocyrtus with description of a new Amazonian genus and a new subfamily of Gonyleptidae (Opiliones, Laniatores)
Fig. 9. Amazochroma pedroi gen. et sp. nov. (MNRJ 2352). ♂, genitalia, diverse details. A. Stylus, dorso-lateral view, showing stunted ventral process and small flabellum. B. Lateral view, also showing apex of ventral plate. C. Flabellum of ventral process, dorso-apical view. D. Stylus, apex, dorsal view. E. Same, apical view. F. Same, posterior view. Scale bars: A = 20 μm; B = 50 μm; D–F = 10 μm; C = 5 μm.
Fig. 8 in Further dismemberment of Discocyrtus with description of a new Amazonian genus and a new subfamily of Gonyleptidae (Opiliones, Laniatores)
Fig. 8. Amazochroma pedroi gen. et sp. nov. (MNRJ 2352). ♂, genitalia, distal part. A. Dorsal view. B. Lateral view. C. Ventral view. Scale bars = 100 μm.
Fig. 10 in Further dismemberment of Discocyrtus with description of a new Amazonian genus and a new subfamily of Gonyleptidae (Opiliones, Laniatores)
Fig. 10. Male specimens of Discocyrtus, ex-Discocyrtus, Mitobatinae, ex-Mitobatinae, Pachylinae and ex-Pachylinae, in vivo. – Roeweriinae. A. Discocyrtanus pertenuis (Mello-Leitão, 1935), Brazil, Minas Gerais, Belo Horizonte. B. Roeweria virescens (Mello-Leitão, 1940), Brazil, São Paulo, Piedade. – "Pachylinae". C. Discocyrtus crenulatus Roewer, 1913, Brazil, Rio de Janeiro, Taquara. – Pachylinae. D. Pachylus chilensis (Gray, 1833), Chile.– Mitoblatinae. E. Discocyrtoides nigricans (Mello-Leitão, 1922), Brazil, Minas Gerais, Ouro Preto, and F. Longiperna concolor (Mello-Leitão, 1923), Brazil, São Paulo, Ubatuba. Images courtesy Arthur Anker & Pedro Martins (A, C, E), João Burini (B), Ricardo Pinto-da-Rocha (D) and Glauco Machado (F).
Fig. 7 in Further dismemberment of Discocyrtus with description of a new Amazonian genus and a new subfamily of Gonyleptidae (Opiliones, Laniatores)
Fig. 7. Amazochroma pedroi gen. et sp. nov., ♂, holotype (MNRJ 2352). A. Habitus, dorsal view. B. Armature of scutal area III, posterior view. C. Ocularium, frontal view. D. Habitus, lateral view. E. Left femur IV, dorsal view. F. Same, retrolateral view. G. Same, ventral view. H. Same, prolateral view. Scale bars = 1 mm.
Fig. 6 in Further dismemberment of Discocyrtus with description of a new Amazonian genus and a new subfamily of Gonyleptidae (Opiliones, Laniatores)
Fig. 6. Amazochroma carvalhoi (Mello-Leitão, 1941) gen. et comb. nov. (MNRJ 8801); ♂, genitalia, distal part. A. Dorsal view, panoramic. B. Same, greater magnification showing glans. C. Ventral view. D. Lateral view. E. Dorso-apical view. F. Stylus, apex, apical view. G. Same, dorsal view. Scale bars: A–E = 100 μm; F–G = 10 μm.
Fig. 5 in Further dismemberment of Discocyrtus with description of a new Amazonian genus and a new subfamily of Gonyleptidae (Opiliones, Laniatores)
Fig. 5. Amazochroma carvalhoi (Mello-Leitão, 1941) gen. et comb. nov., ♂, holotype (MNRJ 5143). A. Habitus, dorsal view. B. Armature of scutal area III, dorso-posterior view. C. Ocularium, frontal view. D. Habitus, lateral view. E. Left femur IV, dorsal view. F. Same, retrolateral view. G. Same, ventral view. H. Same, prolateral view. Scale bars = 1 mm.
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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.