scholarly journals Changes in UV penetration associated with marine intrusions and freshwater discharge in a shallow coastal lagoon of the Southern Atlantic Ocean

2000 ◽  
Vol 207 ◽  
pp. 19-31 ◽  
Author(s):  
D Conde ◽  
L Aubriot ◽  
R Sommaruga
Keyword(s):  
Atlantic Ocean ◽  
Coastal Lagoon ◽  
Freshwater Discharge ◽  
Southern Atlantic Ocean

Mercury fluxes between an impacted coastal lagoon and the Atlantic Ocean

2008 ◽  
Vol 76 (4) ◽  
pp. 787-796 ◽  
Author(s):  
P. Pato ◽  
C. Lopes ◽  
M. Válega ◽  
A.I. Lillebø ◽  
J.M. Dias ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
Coastal Lagoon ◽  
Mercury Fluxes

scholarly journals Marine magnetotellurics imaged no distinct plume beneath the Tristan da Cunha hotspot in the southern Atlantic Ocean

2017 ◽  
Vol 716 ◽  
pp. 52-63 ◽  
Author(s):  
Kiyoshi Baba ◽  
Jin Chen ◽  
Malte Sommer ◽  
Hisashi Utada ◽  
Wolfram H. Geissler ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
Tristan Da Cunha ◽  
Marine Magnetotellurics ◽  
Southern Atlantic Ocean

Angusticopula rowlingiana, a new melosiroid diatom (Bacillariophyta) from Ascension Island (South Atlantic Ocean)

Phytotaxa ◽  
2019 ◽  
Vol 388 (2) ◽  
pp. 155 ◽  
Author(s):  
BART VAN DE VIJVER ◽  
SANDRA WILFERT ◽  
VACLAV HOUK ◽  
DAVID M. JOHN
Keyword(s):  
Electron Microscopy ◽  
New Species ◽  
Atlantic Ocean ◽  
Diatom Species ◽  
Ascension Island ◽  
Remote Island ◽  
A New Species ◽  
Similar Combination ◽  
Southern Atlantic Ocean ◽  
Scanning Electron

During a diatom survey of some samples from Ascension Island, a remote island located in the southern Atlantic Ocean, an unknown melosiroid diatom species was studied using both light and scanning electron microscopy. It proved to be a new species described as Angusticopula rowlingiana sp. nov. and characterized by a large number of narrow copulae in the girdle, a marginal ring of small granules, very small pores covering the entire valve face and occasionally having internal valves.                The new species is compared with all Angusticopula species known worldwide and with several Melosira species showing a similar combination of characters. Short notes on its ecology are included.

Peoecological evidence of Raphia in the Pre-Columbian Neotropics

1997 ◽  
Vol 13 (6) ◽  
pp. 783-792 ◽  
Author(s):  
Gerald R. Urquhart
Keyword(s):  
Atlantic Ocean ◽  
New World ◽  
Natural Phenomenon ◽  
Before Present ◽  
West Gondwana ◽  
Atlantic Trade ◽  
Freshwater Swamp ◽  
African Genus ◽  
Southern Atlantic Ocean ◽  
Raphia Taedigera

ABSTRACTDisjunctions between Africa and the Neotropics present a puzzle that is key to understanding the biogeography of the diverse floras and faunas of both continents. Many authors have proposed that Raphia taedigera Maur., the sole Neotropical representative of an otherwise African genus, has been introduced to the New World. Paleoecological data from a freshwater swamp in Nicaragua, which yielded R. taedigera pollen dating to 2800 ± 90 y before present (BP) and Raphia seed fragments from 2040 ± 60 BP are presented. These illustrate that Raphia taedigera arrived in the New World before trans-Atlantic trade by humans and thus arrived as a result of a natural phenomenon. The lack of differentiation of R. taedigera from the African sister taxon, R. vinifera, suggests recent separation of the two species (i.e. after the creation of the southern Atlantic Ocean by the splitting of West Gondwana). Other evidence supports dispersal of Raphia by ocean currents. The palm probably arrived from Africa by floating as an individual fruit or on a raft of vegetation. Thus, R. taedigera represents another example of trans-Atlantic dispersal, strengthening the link between the flora and fauna of Africa and the Neotropics.

White spot syndrome virus in wild penaeid shrimp caught in coastal and offshore waters in the southern Atlantic Ocean

2010 ◽  
Vol 33 (6) ◽  
pp. 533-536 ◽  
Author(s):  
L S Cavalli ◽  
B F S Nornberg ◽  
S A Netto ◽  
L Poersch ◽  
L A Romano ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
White Spot Syndrome Virus ◽  
Penaeid Shrimp ◽  
White Spot ◽  
White Spot Syndrome ◽  
Southern Atlantic Ocean
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