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opencc-zeroDec 2004View details →

FIGURE 2. A. Alcyonium paessleri May, 1899 in New records of octocorals (Cnidaria, Anthozoa) from the south western Atlantic Ocean, with zoogeographic considerations

FIGURE 2. A. Alcyonium paessleri May, 1899, alcohol sample, MACN 18635. B. Alcyonium haddoni Wright & Studer, 1889, alcohol sample, MACN 15666.

opencc-by-4.0Mar 2024View details →

Holocene relative sea-level data from the Atlantic coasts of South America

This spreadsheet is a complete record of the Holocene sea-level proxies in the southwestern Atlantic, from Brazil to Argentina following the HOLSEA template.

Figure 4 in Ten thousand kilometres away and still the same species? The mystery of identity of Scopelocheirus sp. (Amphipoda: Scopelocheiridae) from the South Atlantic

Figure 4. Scopelocheirus hopei (Costa in Hope, 1851), male, 5.9 mm, Kattegat (Denmark), habitus, Stn. PP46.

Figure 5 in Ten thousand kilometres away and still the same species? The mystery of identity of Scopelocheirus sp. (Amphipoda: Scopelocheiridae) from the South Atlantic

Figure 5. Scopelocheirus hopei (Costa in Hope, 1851), male, 5.9 mm, Kattegat (Denmark), scale bar 200 µm, Stn. PP46.

Figure 3 in Ten thousand kilometres away and still the same species? The mystery of identity of Scopelocheirus sp. (Amphipoda: Scopelocheiridae) from the South Atlantic

Figure 3. Habitus photograph of Scopelocheirus hopei (Costa in Hope, 1851), male, 6 mm, Kattegat (Denmark), stn. PP46.

Figure 7 in Ten thousand kilometres away and still the same species? The mystery of identity of Scopelocheirus sp. (Amphipoda: Scopelocheiridae) from the South Atlantic

Figure 7. Habitus photograph of Scopelocheirus sossi sp. nov., female, 6.2 mm, Namibia, Stn. M157_41.

Figure 6 in Ten thousand kilometres away and still the same species? The mystery of identity of Scopelocheirus sp. (Amphipoda: Scopelocheiridae) from the South Atlantic

Figure 6. Scopelocheirus hopei (Costa in Hope, 1851), male, 5.9 mm, Kattegat (Denmark), scale bar 200 µm, Stn. PP46.

opencc-by-4.0Aug 2023View details →

Dataset: Impact of early Danian environmental perturbations on mid-latitude planktic foraminiferal assemblages from the ODP Site 1262 (South Atlantic Ocean)

<div> <div> <div> After the mass extinction at the Cretaceous/Paleogene (K/Pg) boundary (~66 Ma), life forms quickly radiated to occupy ecological niches in the world’s oceans. Nevertheless, the aftermath of the Chicxulub impact, the massive volcanism of the Deccan Traps and climatic perturbations endured during the early Danian. The impact of consequent carbon cycle perturbations on nascent plankton communities, such as the Dan-C2 event (~65.80 to ~65.71 Ma), is still poorly known. In this work, we present a detailed study of planktic foraminiferal assemblages from Ocean Drilling Program (ODP) Site 1262 (Walvis Ridge, South Atlantic Ocean), spanning the first ~400 kyr of the Danian. No relevant perturbations in planktic foraminiferal assemblages and carbonate preservation indices have been identified at Site 1262 during the Dan-C2 event. Approximately 50 kyr before the beginning of the Dan-C2 event, a Hg-rich interval, potentially linked to the emplacement of the Ambenali Formation of the Deccan Traps massive volcanism, is recorded between ~65.95 and 65.82 Ma. It coincides with an increase in aberrant planktic foraminifera (~65.93 to ~65.82 Ma), allowing to establish a cause-effect relationship. Additionally, a bloom of triserial guembelitriids was recognized between ~65.87 and ~65.78 Ma, also preceding the Dan-C2 event but lagging the Hg-rich interval and the bloom of aberrant planktic foraminifera. The lag time between the first volcanic episode and ecosystem response may be due to factors such as an inefficient biological pump and increases in temperature, microbial activity and food supply at the ocean surface. A second Hg-rich interval identified between ~65.70 and ~65.65 Ma has been tentatively tied to the Mahabaleswar Formation of the Deccan Traps. Neither the second volcanic episode nor the Dan-C2 event resulted in relevant environmental perturbations at Site 1262. This suggests that, although volcanism may have had an impact on early plankton communities in the early Danian through metal contamination, marine ecosystems likely became progressively more stable and resistant to changes in volcanic emissions and the carbon cycle. </div> </div> </div>

opencc-by-4.0Feb 2019View details →

Figure 4. P in Description of Pseudoameiropsis suphankaraytugi sp. nov. (Copepoda: Harpacticoida: Ameiridae) with the first report of the genus Pseudoameiropsis Pallares, 1982 outside of the South Atlantic Ocean

Figure 4. P. suphankaraytugi sp. nov., holotype, ♀, swimming legs, anterior: a) P1, b) P2, c) P3, d) P4.

opencc-by-4.0Feb 2019View details →

Figure 3. P in Description of Pseudoameiropsis suphankaraytugi sp. nov. (Copepoda: Harpacticoida: Ameiridae) with the first report of the genus Pseudoameiropsis Pallares, 1982 outside of the South Atlantic Ocean

Figure 3. P. suphankaraytugi sp. nov., holotype, ♀: a) A1, b) A2, c) labrum, d) mandibular gnathobase, e) mandibular palp, f) maxillule, g) maxilla, h) maxilliped.

opencc-by-4.0Feb 2019View details →

Figure 2. P in Description of Pseudoameiropsis suphankaraytugi sp. nov. (Copepoda: Harpacticoida: Ameiridae) with the first report of the genus Pseudoameiropsis Pallares, 1982 outside of the South Atlantic Ocean

Figure 2. P. suphankaraytugi sp. nov., holotype, ♀: a) urosome, ventral; b) anal somite and caudal rami, dorsal; c) P5.

opencc-by-4.0Nov 2024View details →

Regional relationship between total alkalinity and salinity in the surface waters of the western South Atlantic margin

Surface seawater data considered in the surface waters of the western South Atlantic margin: cruise, year, month, day, hour, minute, station, latitude, longitude, pressure (dbar), surface temperature (SST; °C), sea surface salinity (SSS) and total alkalinity (AT; µmol kg-1).

opencc-by-4.0Aug 2021View details →

Fig. 2 in First Record of the Rare Deepwater Assfish Bassozetus mozambiquensis (Ophidiiformes: Ophidiidae) from the Western South Atlantic

Fig. 2. Diagrams of vomerine (A) and basibranchial (B) tooth patches of Bassozetus mozambiquensis. ZMH 26332, 478 mm SL. Scale bar: 5 mm.

opencc-zeroFeb 2022View details →

FIG. 2 in Phylogeny and morphology of Fissidentaceae Schimp. in the South Atlantic Islands and description of a new species

FIG. 2. — Fissidens noronhensis Teixeira, Bordin & M. Carv.-Silva, sp. nov.: A, vegetative plant; B, oblong leaf; C, axillary nodules; D, cross section vaginant laminae; E, leaf with acute apex; F basal part of leaf; G, mid leaf with hexagonal cells. Scale bars: A, 500 µm; B, 200 µm; C, E-G, 100 µm; D, 50 µm.

opencc-zeroFeb 2022View details →

Fissidens lindbergii C 0.008 FIG. 1 in Phylogeny and morphology of Fissidentaceae Schimp. in the South Atlantic Islands and description of a new species

Fissidens lindbergii C 0.008 FIG. 1. — Phylogenetic tree based on analysis with the concatenated sequences of chloroplast rps4 and trnG genes. The numbers next to the branches are the bootstrap values for Maximum Parsimony, Maximum Likelihood and later probabilities for Bayesian, respectively. Abbreviations: C, continental; T, Trindade Island; FN, Fernando de Noronha.

opencc-by-4.0Sep 2011View details →

Fig. 2 in Invasion of the Indo-Pacific blenny Omobranchus punctatus (Perciformes: Blenniidae) on the Atlantic Coast of Central and South America

Fig. 2. Distribution of Omobranchus punctatus in Central and South American coasts. a) Full circle represents new records and open circle represents records from literature; b) Catch sites of Omobranchus punctatus in the eastern coast of Venezuela (Gulf of Paria) and Trinidad (see Table 1); c) Localities with records of Omobranchus punctatus in western Venezuela (Gulf of Venezuela) and Colombia (Guajira Peninsula) (see Table 1) and d) Localities with records of Omobranchus punctatus from Maranhão and Pará states, northern Brazil (see Table 1).

Fig. 5 in Application of the physical habitat simulation for fish species to assess environmental flows in an Atlantic Forest Stream in South-eastern Brazil

Fig. 5. Average habitat suitability index –HSI– in the upper and lower reach of the riacho São Pedro, for the three fish species.

Fig. 6 in Application of the physical habitat simulation for fish species to assess environmental flows in an Atlantic Forest Stream in South-eastern Brazil

Fig. 6. Weighted usable area (WUA) in the upper and lower reach of the riacho São Pedro, for the three fish species.

Fig. 4 in Application of the physical habitat simulation for fish species to assess environmental flows in an Atlantic Forest Stream in South-eastern Brazil

Fig. 4. Habitat suitability curves for depth (m), mean water column velocity (m/s) and type of substrate for the three fish species in the riacho São Pedro. Substrate types are; 1- large boulder, 2- boulder, 3- cobble, 4- gravel, 5- fine gravel, 6- sand and 7- vegetation.

Fig. 3 in Application of the physical habitat simulation for fish species to assess environmental flows in an Atlantic Forest Stream in South-eastern Brazil

Fig. 3. Frequencies of habitat availability by classes of depth (m), mean velocity (m/s) and type of substrate (1- large boulder; 2- boulder; 3- cobble; 4- gravel; 5- fine gravel; 6- sand and 7- vegetation), obtained by direct survey in the riacho São Pedro.