The Role of Mass Wasting In the Progressive Development Of Submarine Channels (Espírito Santo Basin, Se Brazil)

Abstract This study evaluated the richness of vascular epiphytes on Pseudobombax sp. nov. in three inselbergs in the Atlantic Forest Domain in state of Espírito Santo and evaluated the floristic similarity between the areas. We sampled 111 phorophytes in three regions in the southern of Espírito Santo state and identified 151 species, 77 genera and 21 families of vascular epiphytes, of which the families Orchidaceae and Bromeliaceae showed the highest richness. Non-parametric estimators (Chao 2, Jackknife 1) indicate that 90 and 95% of species richness of epiphytes was recorded. The most diversified ecological category was the characteristic holoepiphytes. The ratio of the number of epiphytes and number of phorophytes sampled in a montane inselberg, in this study, was greater than the richness of vascular epiphytes found in the rocky outcrops of quartzite, and, in general, different types of Atlantic Domain forests, but smaller in richness for some Dense Ombrophilous Forests of southern Brazil. The three inselberg areas had distinct floras. The high richness, the endemism found, and the number of endangered species of epiphytes demonstrate the important role of Pseudobombax sp. nov., because of its architecture and size, in the maintenance of biodiversity on the inselbergs in southeastern Brazil.

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Amphibia, Anura, Brachycephalus didactylus (Izecksohn, 1971) and Zachaenus parvulus (Girard, 1853): distribution extension

Check List ◽

10.15560/8.2.242 ◽

2012 ◽

Vol 8 (2) ◽

pp. 242 ◽

Cited By ~ 4

Author(s):

Jane C. F. de Oliveira ◽

Lívia Coco ◽

Renata Valls Pagotto ◽

Edicarlos Pralon ◽

Davor Vrcibradic ◽

...

Keyword(s):

Atlantic Forest ◽

Geographic Range ◽

The State ◽

Short Term ◽

Espírito Santo ◽

Anuran Species ◽

Forest Sites ◽

Se Brazil ◽

Espirito Santo ◽

First Time

We report geographic range extensions for two anuran species, Brachycephalus didactylus (Bachycephalidae) and Zachaenus parvulus (Cycloramphidae), recorded during a short-term herpetofaunal survey carried out at mid-elevation (600-900 m) Atlantic Forest sites at the Serra das Torres mountains (21°00’ S, 41°13’ W), in the state of Espírito Santo, SE Brazil. These two species are reported for the first time in Espírito Santo, representing the northernmost records for both of them and raising to 135 the number of anuran species currently known to occur in the state.

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Testing Bathymetric and Regional Patterns in the Southwest Atlantic Deep Sea Using Infaunal Diversity, Structure, and Function

Diversity ◽

10.3390/d12120485 ◽

2020 ◽

Vol 12 (12) ◽

pp. 485

Author(s):

Giovanni A. P. dos Santos ◽

Alexsandra C. Silva ◽

André M. Esteves ◽

Venina P. Ribeiro-Ferreira ◽

Patricia. F. Neres ◽

...

Keyword(s):

Water Depth ◽

Deep Sea ◽

Structure And Function ◽

Southwest Atlantic ◽

Regional Patterns ◽

Espírito Santo ◽

Se Brazil ◽

Standing Stocks ◽

And Function ◽

Espirito Santo

A better understanding of deep-sea biology requires knowledge of the structure and function of their communities, the spatial, temporal, and environmental patterns, and the changes and dynamics that govern them. Some of the most studied patterns in deep-sea biology are those related to bathymetrical gradients. For meiofauna and nematodes, such studies have highlighted the importance of recognizing regional differences in using ecological mechanisms to explain those patterns. Despite holding significant fisheries and oil and gas resources, the eastern Brazilian Continental Margin is poorly understood with respect to its seafloor biology and ecology. To answer ecological questions of deep-sea infaunal structural and functional diversity in relation to bathymetrical patterns, we used nematode data from five bathymetric transects (400, 1000, 1900, 2500, and 3000 m water depth) sampled in 2011 and 2013 on the Espírito Santo slope off the coast of southeast (SE) Brazil. Deep nematode community analysis based on 6763 nematode identifications showed very high levels of diversity (201 genera; 43 families) compared to other ocean basins and deep-sea regions. Our analyses showed that there is a distinct bathymetric break in standing stocks and community structure between 1000 and 1900 m. Nematode standing stocks were much higher at 400 and 1000 m compared to those for similar depths worldwide, likely linked to the intense and frequent upwelling and specific hydrographic and topographic identity of the region. The bathymetric break was not present for structural and functional nematode diversity. Instead, bathymetric regressions showed that they increased gradually toward 3000 m water depth. The deep Espírito Santo basin is characterized by rich and equitable nematode communities that are both mature and trophically diverse. General deep-sea ecological theories apply to our findings, but there are also substantial regional effects related to the local margin topography, upwelling, and oceanographic and hydrodynamic processes that make the Espírito Santo Basin a unique and diverse deep-sea ecosystem.

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