scholarly journals Soil–geomorphology interactions and paleoclimatic implications of an ornithogenic soil toposequence on Rata Island, Fernando de Noronha Archipelago, South Atlantic

2014 ◽  
Vol 52 ◽  
pp. 119-128 ◽  
Author(s):  
Fábio Soares de Oliveira ◽  
Carlos Ernesto G.R. Schaefer ◽  
Walter Antônio Pereira Abrahão ◽  
Eliane de Paula Clemente ◽  
Felipe Nogueira Bello Simas
Keyword(s):  
South Atlantic ◽  
Soil Geomorphology ◽  
Fernando De Noronha ◽  
Ornithogenic Soil

scholarly journals Breeding of White-tailed Tropicbirds (Phaethon lepturus) in the western South Atlantic

2016 ◽  
Vol 76 (3) ◽  
pp. 559-567 ◽  
Author(s):  
G. R. Leal ◽  
P. P. Serafini ◽  
I. Simão-Neto ◽  
R. J. Ladle ◽  
M. A. Efe
Keyword(s):  
Monitoring Program ◽  
South Atlantic ◽  
Conservation Strategies ◽  
Additional Information ◽  
Mate Fidelity ◽  
Species Of Conservation Concern ◽  
Population Conservation ◽  
Land Crabs ◽  
Fernando De Noronha ◽  
Conservation Concern

Abstract Basic information on natural history is crucial for assessing the viability of populations, but is often lacking for many species of conservation concern. One such species is the White-tailed Tropicbird, Phaethon lepturus (Mathews, 1915). Here, we address this shortfall by providing detailed information on reproductive biology, distribution and threats on the Fernando de Noronha archipelago, Brazil – the largest colony of P. lepturus in the South Atlantic. We assessed reproduction from August 2011 to January 2012 by monitoring tropicbird nests and their contents. A population estimate was obtained through a combination of active searches for nests and by census at sea between 2010 and 2012. Breeding success was calculated by traditional methods. The growth curve of chicks and life table were also calculated. Additional information on nest and mate fidelity and on age of breeding birds was obtained from the banded birds. Our results indicate that the unusual nest form (limestone pinnacles) and predation by crabs may be responsible for the observed patterns of hatching and fledging success. Although the Fernando de Noronha population appears to be stable (at between 100-300 birds), a long term monitoring program would be desirable to assess fluctuations in this globally important population. Conservation strategies should focus on controlling predation by land crabs and tegu lizards.

scholarly journals Four new additions to the marine flora of Fernando de Noronha Archipelago, tropical western South Atlantic Ocean

Check List ◽  
2009 ◽  
Vol 5 (2) ◽  
pp. 210 ◽  
Author(s):  
Vinícius Peruzzi de Oliveira ◽  
Daniela Rezende Peçanha Fernandes ◽  
Natale Marcello de Figueiredo ◽  
Yocie Yoneshigue Valentin ◽  
Ricardo Clapis Garla
Keyword(s):  
Atlantic Ocean ◽  
South Atlantic ◽  
South Atlantic Ocean ◽  
Fernando De Noronha ◽  
Marine Flora

None

Echinoidea and Holothuroidea (Echinodermata) of the Trindade and Martin Vaz Archipelago, off Brazil, with new records and remarks on taxonomy and species composition

2016 ◽  
Vol 98 (3) ◽  
pp. 521-555 ◽  
Author(s):  
Luciana Martins ◽  
Camilla Souto ◽  
Joel Braga ◽  
Marcos Tavares
Keyword(s):  
Species Composition ◽  
Oceanic Islands ◽  
South Atlantic ◽  
Brazilian Coast ◽  
The South ◽  
Stepping Stones ◽  
Morphological Variations ◽  
Fernando De Noronha ◽  
Brazilian Province ◽  
Oceanic Archipelagos

The degree of isolation of oceanic islands makes these environments an excellent model for evolutionary studies. Proper knowledge of the species composition of oceanic islands, however, is required to better understand evolutionary processes (e.g. speciation events). A 3-year survey in the shallow waters (up to 30 m) of the Trindade and Martin Vaz oceanic insular complex, and a literature review on the data published for these islands and for Fernando de Noronha and São Pedro and São Paulo oceanic archipelagos have been conducted to document the biodiversity of echinoids and holothuroids from these isolated Brazilian oceanic islands. Sixteen species were collected and characterized morphologically, including two first records for the South Atlantic and one for Brazil. Comparison with conspecific specimens from the Brazilian coast and congeners was also done. Species richness increased from six to 18; the richness in Trindade Island being the highest among the South Atlantic oceanic islands. However, these islands remain undersampled beyond 30-m depth. Endemism was very low, suggesting the potential role of oceanic currents and seamounts as stepping-stones in transoceanic dispersal of species to remote islands. The Brazilian oceanic islands are impoverished oceanic outposts of the Brazilian Province; nevertheless, endemic species and intraspecific morphological variations compared with the mainland suggest they may also be regions of speciation. Documenting their biodiversity is critical for effective management and conservation of their marine ecosystems.

scholarly journals Whistle variability in South Atlantic spinner dolphins from the Fernando de Noronha Archipelago off Brazil

2006 ◽  
Vol 120 (6) ◽  
pp. 4071-4079 ◽  
Author(s):  
Fernanda S. Camargo ◽  
Mario M. Rollo ◽  
Viviana Giampaoli ◽  
Claudio Bellini
Keyword(s):  
South Atlantic ◽  
Fernando De Noronha ◽  
Spinner Dolphins

scholarly journals The Seven-arm Octopus, Haliphron atlanticus Streenstrup, 1861 (Cephalopoda, Alloposidae), in the Fernando de Noronha archipelago, Brazil

Check List ◽  
2017 ◽  
Vol 13 (1) ◽  
pp. 2036 ◽  
Author(s):  
Françoise D. Lima ◽  
Liana F. Mendes ◽  
Leonardo Veras ◽  
Tatiana S. Leite ◽  
Sergio M. Q. Lima
Keyword(s):  
Atlantic Ocean ◽  
North Atlantic ◽  
North Pacific ◽  
Deep Sea ◽  
Genetic Divergence ◽  
Phylogenetic Reconstruction ◽  
South Atlantic ◽  
Fernando De Noronha

The rare deep-sea octopus, Haliphron atlanticus is the only known species recognized within the genus. A fragment of H. atlanticus was found in the Fernando de Noronha archipelago, Brazil (South Atlantic). Both phylogenetic reconstruction and pairwise genetic divergence show that the specimen recorded in South Atlantic is closely related to individuals from North Pacific. However, there is a greater divergence among these specimens and a giant octopus from North Atlantic. This evidence suggests that Haliphron is not monospecific, with at least two species, both represented in the Atlantic Ocean.

scholarly journals Island beaches morphological and sedimentary short term variations – the case of SE Fernando de Noronha Island, South Atlantic, Brazil

2011 ◽  
Vol 11 (4) ◽  
pp. 471-478 ◽  
Author(s):  
R.L. Barcellos ◽  
C. Coelho-Júnior ◽  
S.R.R.M. Lins ◽  
M.S. Silva ◽  
P.B. Camargo ◽  
...  
Keyword(s):  
South Atlantic ◽  
Short Term ◽  
Fernando De Noronha

scholarly journals Field observation of Ornithocercus spp. (Dinophysiales, Dinophyta): reproductive stages and phased cell division (South Atlantic Ocean, Brazil)

2014 ◽  
Vol 42 (2) ◽  
Author(s):  
Eveline Pinheiro de De AQUINO ◽  
Marcos HONORATO-DA-SILVA ◽  
Fernando Antônio do Nascimento FEITOSA ◽  
Maria Luise KOENING ◽  
José Zanon de Oliveira PASSAVANTE
Keyword(s):  
Cell Division ◽  
Atlantic Ocean ◽  
Field Observation ◽  
South Atlantic ◽  
South Atlantic Ocean ◽  
Fernando De Noronha

O ciclo de vida dos dinoflagelados oceânicos tem sido pouco estudado. A divisão é iniciada em determinados tempos do dia (divisão celular faseada). Este estudo relata os estágios de divisão (zona e ponte dorsal megacítica) para a população de Ornithocercus, no Oceano Atlântico Sul (Arquipélago de Fernando de Noronha), em diferentes tempos do dia. As amostras foram coletadas a cada 3h, durante 24h, em dois pontos fixos, nos anos 2010 e 2012. Foi feito o arrasto vertical da rede de plâncton (malha de 20µm). As células em divisão de Ornithocercus foram registradas, em que ocorreram O. magnificus Stein, O. thumii (Schmidt) Kofoid & Skogsberg, O. quadratus Schütt e O steinii Schütt, os quais apresentaram a divisão faseada e pelo menos um dos estágios de divisão celular. O. quadratus ocorreu no maior número de horários, desde antes, durante e depois do amanhecer, bem como durante e depois do pôr do sol. Palavras chave: fitoplâncton, dinoflagelados, variação nictemeral.

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