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339 results for “southeast Brazil”
Figure 1 in Notes on Kora and description of a new species from Minas Gerais, Southeast Brazil (Mollusca: Gastropoda: Stylommatophora)
Figure 1. (A) PARNA Cavernas do Peruaçu map: (B–C) landscape; (D) K. rupestris live specimen.
Fig. 1 in Microhabitat use by Phalloceros harpagos Lucinda (Cyprinodontiformes: Poeciliidae) from a coastal stream from Southeast Brazil
Fig. 1. Mato Grosso fluvial system with indication of the sample site (grey square).
Flooding drives tropical dry forest tree community assembly in southeast Brazil
<p><span>In this study, we characterized and compared vegetation types associated with geomorphological units susceptible to distinct flooding levels. Differences in vegetation are related to landform variations. We aimed to (i) characterize the vegetation structure and quantify community compositional differences among landforms and (ii) compare landforms soil characteristics and how these correlate with the tree vegetation. The study area is located in the Brazilian Caatinga Domain, near the Verde Grande River, a tributary of São Francisco River (coordinates 14º 54' 38'' S 43º 42' 53'' W). We allocated six plots in each landform sampled from wettest to driest sites: (i) Marginal Dike (RF – Riparian Forest), (ii) Upper terrace (RWF – Riparian Wetland Forest), (iii) Lower Terrace (WF – Wetland Forest), (iv) Lower Plain (OFF – Occasionally Flooded Forest), and (v) Upper Plain (UF - Unflooded Forest). </span>We conducted multivariate analyses (non-metric multidimensional scaling and Principal component analyses) to determine if the five sampled environments formed distinct floristic and environmental groups across the flooding gradient. We used ANOVA and Tukey post-hoc tests to assess soil variable differences among vegetation types (where relationships between edaphic variations and tree communities' floristic-structural patterns are the purpose of each analysis). <span>A total of 1422 individuals, 26 families, 70 genera, and 89 species were recorded. The NMDS revealed two distinct floristic groups: one group is associated with landforms with assumed higher flood frequency (RF, RWF, WF) and one with less frequently flooded landforms (OFF and UF). The RF, OFF, and UF landforms contained exclusive species (that only occurred in the plots of a particular landform). The species <em>Geofroea spinosa</em> (Fabaceae) was responsible for 70% of the total biomass recorded in the landforms RWF and WF. The soil analysis showed a gradient of soil acidity and fertility related to water saturation, whereby the most frequently flooded plots had the highest acidity values and highest fertility. We found that flood-related conditions significantly influence tree community structure and species distribution in this floodplain in the Brazilian Caatinga Domain.</span></p>
Flooding drives tropical dry forest tree community assembly in southeast Brazil
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Figure 2 in Breeding biology of the Sayaca Tanager (Thraupis sayaca) in southeast Brazil
Figure 2. Nest site, nest, eggs, hatchings and fledglings of the Sayaca Tanager (Tangara sayaca). A nesting site under the leaves of a Phoenix palm (a), an incubating female (b), a nest externally coated with compound leaves and sewing threads in a human building structure (c), patterns of egg shell colouration (d), 1-day-old hatchling and one egg (e), and newly 17-day-old fledglings (f).
Figure 3 in Breeding biology of the Sayaca Tanager (Thraupis sayaca) in southeast Brazil
Figure 3. Percent time spent brooding the nestlings per hour (a), and the number of feeding trips per hour (b) in relation to nestling age in the Sayaca Tanager (Thraupis sayaca).
FIGURE 3 in Leptoceroidea (Insecta: Trichoptera: Integripalpia) from Serra do Caparaó, Southeast Brazil, including a new species of Atanatolica Mosely (Leptoceridae)
FIGURE 3. Atanatolica bandeira sp. nov. Male wings. 3A, right forewing, dorsal; 3B, right hind wing, dorsal.
FIGURE 5 in Redescription of Leiocapitella atlantica Hartman, 1965 and description of a new species from the Southeast Brazil (Annelida, Capitellidae)
FIGURE 5. Leiocapitella sensibilis sp. nov., SEM. A) Thoracic region, lateral view; B) Thoracic and abdominal chaetigers, lateral view; C) Proboscis papillae; D) Thoracic lateral organ; E) Abdominal lateral organ; F) Notopodial abdominal hooded hook, frontal view; G) Neuropodial abdominal hooded hook, frontal view. Scale bars: A, 0.5 mm; B, 0.2 mm; C, 5 µm, D, 10 µm; E, 20 µm; F, G, 2 µm.
FIGURE 4 in Redescription of Leiocapitella atlantica Hartman, 1965 and description of a new species from the Southeast Brazil (Annelida, Capitellidae)
FIGURE 4. Leiocapitella sensibilis sp. nov. A) Abdominal chaetigers (chaetigers 19–23), dorsal view; B) Abdominal region (chaetigers 50–53), lateral view; C) Posterior abdominal region (after chaetiger 130); D) Anterior end, lateral view; E) Thoracic and abdominal chaetigers, lateral view, methyl green staining pattern; F) Posterior abdominal region, methyl green staining pattern. Scale bars: A, B, C, D, 0.2 mm; E, 1 mm; F, 0.5 mm.
FIGURE 3 in Redescription of Leiocapitella atlantica Hartman, 1965 and description of a new species from the Southeast Brazil (Annelida, Capitellidae)
FIGURE 3. Leiocapitella sensibilis sp. nov. A) Thoracic region, lateral view; B) Abdominal chaetiger, dorsal view. Scale bars: A, B, 0.2 mm.
FIGURE 1 in Redescription of Leiocapitella atlantica Hartman, 1965 and description of a new species from the Southeast Brazil (Annelida, Capitellidae)
FIGURE 1. Leiocapitella atlantica (Paratype). A) Anterior end, dorsal view; B) Anterior end, lateral view; C) Abdominal chaetigers, lateral view; D) Thoracic region, lateral view; E) Thoracic region, dorsal view; F) Thoracic region, methyl green staining pattern (MGSP). Scale bars: A, B, C, 0.5 mm; D, E, F, 1 mm.
Supplementary material 1 from: Mayorga LFSP, Vanstreels RET, Bhering RCC, Mamede N, Costa LMB, Pinheiro FCF, Reis LWD, Trazzi A, Meirelles WLC, Ribeiro AM, Siciliano S (2020) Strandings of cetaceans on the Espírito Santo coast, southeast Brazil, 1975–2015. ZooKeys 948: 129-152. https://doi.org/10.3897/zookeys.948.50468
Historical records of cetacean strandings along the coast of Espírito Santo state, southeast Brazil, 1975–2015
FIGURE 3 in Morphological variation in the genus Juliomys (Rodentia: Cricetidae Sigmodontinae) and taxonomic status of Juliomys anoblepas (Winge 1887) from the Quaternary of Southeast Brazil
FIGURE 3. Characters proposed herein and identified as polymorphic in Juliomys species. 1—Short nasal in the paratype of J. rimofrons (MN46703); 2—Long nasal in the paratype of J. rimofrons (MN61646); 3—Anterior cingulum in J. pictipes (UFES2269); 4—Vestigial anterior cingulum in J. ossitenuis (UFSM599); 5—Anterior cingulum absent in J. ossitenuis (MN81912); 6—Enteroloph and enterostyle, both present in J. pictipes (MN77793); 7—Only enterostyle present in J. pictipes (UFSM517); 8—Both absent in the holotype of J. ximenezi (MCNU868). Line = triple point lacrimal-maxillary-frontal suture; arrow = extension of nasal; ac = anterior cingulum; el = enteroloph; es = enterostyle. Scale = 2 mm in images 1–2 and 1 mm in images 3–8.
FIGURE 2 in Morphological variation in the genus Juliomys (Rodentia: Cricetidae Sigmodontinae) and taxonomic status of Juliomys anoblepas (Winge 1887) from the Quaternary of Southeast Brazil
FIGURE 2. Dorsal, ventral, and lateral views of skull of J. anoblepas. 1—Photo modified from Pardiñas & Teta (2011); 2—Photo by Kasper Hansen, illustrating the current state of preservation of the specimen. The specimen is housed at Lund Collection (ZMUC), Copenhagen, Denmark, but it has no catalog number. Its recognition is unquestionable by Winge (1887)'s description and illustration. Scale = 5 mm.
FIGURE 1 in Morphological variation in the genus Juliomys (Rodentia: Cricetidae Sigmodontinae) and taxonomic status of Juliomys anoblepas (Winge 1887) from the Quaternary of Southeast Brazil
FIGURE 1. Map showing the collecting localities of specimens of J. pictipes (black circles), J. anoblepas (star), J. ossitenuis (white circles), J. rimofrons (triangles), J. ximenezi (squares). Atlantic Forest extension is marked in gray and numbers correspond to the localities listed in appendix 1.
FIGURE 5 in Morphological variation in the genus Juliomys (Rodentia: Cricetidae Sigmodontinae) and taxonomic status of Juliomys anoblepas (Winge 1887) from the Quaternary of Southeast Brazil
FIGURE 5. Characters previously proposed as diagnostic, and herein identified as polymorphic or invariable. 1—Little excavated zygomatic notch in J. pictipes (MN81096); 2—Zygomatic notch more excavated in J. pictipes (MN69764); 3—Frontal fontanelle absent in J. pictipes (UFES2421); 4—Frontal fontanelle present in J. pictipes (UFES2432); 5–8—Interorbital region is hourglass shaped in all specimens of Juliomys: note differences in the shape of supraorbital margin, which is squared in J. pictipes (Fig. 5.5, MN77793), rounded in J. ossitenuis (Fig. 5.6, MN81085), rounded in J. rimofrons (Fig. 5.7, MN46703), and slightly squared in J. ximenezi (Fig. 5.8, MCNU868); 9–10—Posterolateral pits with same size in J. ossitenuis (Fig. 5.9, MN81852), and in J. pictipes (Fig. 5.10, MZUSP32666). Horizontal arrow = frontal fontanelle; inclined arrow = supraorbital margin. Scale = 2 mm in images 1–8 and 1 mm in images 9–10.
FIGURE 4 in Morphological variation in the genus Juliomys (Rodentia: Cricetidae Sigmodontinae) and taxonomic status of Juliomys anoblepas (Winge 1887) from the Quaternary of Southeast Brazil
FIGURE 4. Frequency of states related to characters that can be applied to J. anoblepas. 1—Extension of the nasal; 2—Depth of the zygomatic notch; 3—Frontal fontanelle; 4—Extension of the incisive foramen; 5—Anterior cingulum; 6—Enteroloph and enterostyle. Numbers in bars correspond to number of specimens that have each state. Abbreviations: pic = J. pictipes, oss = J. ossitenuis, rim = J. rimofrons, and xim = J. ximenezi.
FIGURE 6 in Morphological variation in the genus Juliomys (Rodentia: Cricetidae Sigmodontinae) and taxonomic status of Juliomys anoblepas (Winge 1887) from the Quaternary of Southeast Brazil
FIGURE 6. Scatterplot results of principal component analysis of log-transformed cranial measurements. Juliomys anoblepas hypodigm is indicated by an asterisk (*). Numbers indicate holotypes: 1, J. pictipes (FMNH26814); 2, J. ossitenuis (MN69752); 3, J. rimofrons (MN61647); and 4, J. ximenezi (MCNU868).
Data from: New species of Isotomiella Bagnall, 1939 from Southeast of Brazil (Collembola, Isotomidae)
Two new species of the genus Isotomiella Bagnall, 1939 are described and illustrated, the first: Isotomiella macedoi sp. n., based on males and females, from the "Parque Nacional da Serra dos Órgãos" (Teresópolis municipality, State of Rio de Janeiro) differs from the other by tibiotarsus III thickened and blunt and two antero-lateral chaetae of labrum strongly thickened. The second species Isotomiella uai sp. n. from "Serra da Gandarela", (Caeté municipality, State of Minas Gerais) differs from the other by presence of short sensilla on antennal IV and tergites, two anterolabral chaetae thickened and falcate mucro.
Figure 1 in A new species of Pelidnota MacLeay (Coleoptera, Scarabaeidae, Rutelinae, Rutelini) from Southeast Brazil
Figure 1. Pelidnota silveiranetoi sp. nov. Holotype, habitus: (A) dorsal; (B) ventral; (C) lateral.
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