Travels in South America, from the Pacific Ocean to the Atlantic Ocean, The Amazon and Madeira Rivers: Sketches and Descriptions from the Note-book of an Explorer Two Years in Peru, with Exploration of its Antiquities

Nature ◽  
1875 ◽  
Vol 11 (274) ◽  
pp. 241-245
2022 ◽  
Author(s):  
Hector Luis D’Antoni ◽  
Lidia Susana Burry ◽  
Patricia Irene Palacio ◽  
Matilde Elena Trivi ◽  
Mariano Somoza

Zootaxa ◽  
2018 ◽  
Vol 4527 (1) ◽  
pp. 75
Author(s):  
LUCIANA MARTINS

The genus Thyonella currently comprises four species which occur in the Atlantic and Pacific Oceans. Thyonella mexicana is the only species known to occur in the Pacific Ocean. The main morphological characters used to distinguish Thyonella species are their dermal ossicles. Since the differences among these characters are subtle, this contribution provides a detailed description and comparison of the ossicle assemblage of the concerned taxa. In addition, description of the internal morphology of three of the concerned species is also provided. Further, this study reports on the first record of Thyonella sabanillaensis for the Southwestern Atlantic. A worldwide revision of the distributional records of Thyonella species is presented and their taxonomy is discussed, concluding that some traditional taxonomic characters should be used cautiously. A brief discussion about the importance of SEM analysis is also provided. 


Tsunami ◽  
2021 ◽  
pp. 151-160
Author(s):  
James Goff ◽  
Walter Dudley

Most Europeans do not worry about tsunami waves as much as those who live around the rim of the Pacific Ocean, but they should. On All Saint’s Day, 1755, a huge earthquake struck Lisbon, Portugal, causing most stone buildings to collapse, including churches, monasteries, nunneries, and chapels, trapping the faithful inside the ruins, which votive candles quickly turned into burning pyres. Voltaire would write, “The sole consolation is that the Jesuit Inquisitors of Lisbon will have disappeared.” To add to the irony, among the few buildings safely left standing following the disaster were the lightly constructed wooden bordellos of the city. Most of Lisbon’s prostitutes but few of her nuns survived. Tsunami waves would not only kill thousands around Lisbon’s harbor but also travel south to Spain and North Africa, north to Ireland and Wales, and across the Atlantic Ocean to the Caribbean, flooding the streets of Barbados.


Radiocarbon ◽  
1980 ◽  
Vol 22 (1) ◽  
pp. 25-53 ◽  
Author(s):  
H G Östlund ◽  
Minze Stuiver

In the preceding paper (Stuiver and Östlund, this issue), some of the general features of the Geochemical Ocean Section Study (GEOSECS) were outlined and results were listed for the Atlantic Ocean. This paper will deal with the second major cruise, which was described by Craig and Turekian (1976), covering the Pacific Ocean in 1973-74 (cf fig 1).


2015 ◽  
Author(s):  
Eduardo A B Almeida ◽  
Fábio B Quinteiro

Neopasiphaeinae bees (Apoidea: Colletidae) are well known for their Amphinotic distribution in the Australian and Neotropical regions. Affinities between colletid taxa in Australia and South America have been speculated for decades, and have been confirmed by recent phylogenetic hypotheses that indicate a biogeographic scenario compatible with a trans-Antarctic biotic connection during the Paleogene. Despite this proximity, no species occurs on both sides of the Pacific Ocean, but the Neotropical species Hoplocolletes ventralis (Friese, 1924), which was described as an Australian taxon due to an error in the specimen labels. This mistake was recognized by C.D.Michener 50 years ago. We herein report that the same labeling problem also happened with Dasycolletes chalceus Friese, 1924, which remained as a tentatively placed species in the Australian genus Leioproctus until now. Moreover, Dasycolletes chalceus is interpreted as a synonym of Dasycolletes ventralis. We also provide a revised diagnosis for Hoplocolletes, describe the male of H. ventralis in detail for the first time, including a comparative study of its genitalia and associated sterna.


2005 ◽  
Vol 71 (12) ◽  
pp. 7910-7919 ◽  
Author(s):  
Rebecca J. Langlois ◽  
Julie LaRoche ◽  
Philipp A. Raab

ABSTRACT To understand the structure of marine diazotrophic communities in the tropical and subtropical Atlantic Ocean, the molecular diversity of the nifH gene was studied by nested PCR amplification using degenerate primers, followed by cloning and sequencing. Sequences of nifH genes were amplified from environmental DNA samples collected during three cruises (November-December 2000, March 2002, and October-November 2002) covering an area between 0 to 28.3°N and 56.6 to 18.5°W. A total of 170 unique sequences were recovered from 18 stations and 23 depths. Samples from the November-December 2000 cruise contained both unicellular and filamentous cyanobacterial nifH phylotypes, as well as γ-proteobacterial and cluster III sequences, so far only reported in the Pacific Ocean. In contrast, samples from the March 2002 cruise contained only phylotypes related to the uncultured group A unicellular cyanobacteria. The October-November 2002 cruise contained both filamentous and unicellular cyanobacterial and γ-proteobacterial sequences. Several sequences were identical at the nucleotide level to previously described environmental sequences from the Pacific Ocean, including group A sequences. The data suggest a community shift from filamentous cyanobacteria in surface waters to unicellular cyanobacteria and/or heterotrophic bacteria in deeper waters. With one exception, filamentous cyanobacterial nifH sequences were present within temperatures ranging between 26.5 and 30°C and where nitrate was undetectable. In contrast, nonfilamentous nifH sequences were found throughout a broader temperature range, 15 to 30°C, more often in waters with temperature of <26°C, and were sometimes recovered from waters with detectable nitrate concentrations.


PeerJ ◽  
2015 ◽  
Vol 3 ◽  
pp. e1338
Author(s):  
Eduardo A.B. Almeida ◽  
Fábio B. Quinteiro

Neopasiphaeine bees (Apoidea: Colletidae) are known for their Amphinotic distribution in the Australian and Neotropical regions. Affinities between colletid taxa in Australia and South America have been speculated for decades, and have been confirmed by recent phylogenetic hypotheses that indicate a biogeographic scenario compatible with a trans-Antarctic biotic connection during the Paleogene. No neopasiphaeine species occurs on both sides of the Pacific Ocean, but the Neotropical speciesHoplocolletes ventralis(Friese, 1924) was described as an Australian taxon due to an error in the specimen labels. This mistake was recognized by CD Michener 50 years ago. We herein report that the same labeling problem also happened withDasycolletes chalceusFriese, 1924, which remained as a tentatively placed species in the Australian genusLeioproctusuntil now. Moreover,Dasycolletes chalceusis interpreted as a synonym ofHoplocolletes ventralis. We also provide a revised diagnosis forHoplocolletes, describe the male ofH. ventralisin detail for the first time, including a comparative study of its genitalia and associated sterna.


Sign in / Sign up

Export Citation Format

Share Document