scholarly journals Methyl bromide loss rates in surface waters of the North Atlantic Ocean, Caribbean Sea, and eastern Pacific Ocean (8°-45°N)

2001 ◽  
Vol 106 (D9) ◽  
pp. 9843-9851 ◽  
Author(s):  
Ryszard Tokarczyk ◽  
Eric S. Saltzman
Keyword(s):  
Pacific Ocean ◽  
Atlantic Ocean ◽  
North Atlantic ◽  
Surface Waters ◽  
Methyl Bromide ◽  
North Atlantic Ocean ◽  
Caribbean Sea ◽  
Eastern Pacific Ocean ◽  
The North ◽  
The North Atlantic

scholarly journals The circulation of the surface waters of the North Atlantic Ocean

1900 ◽  
Vol 66 (424-433) ◽  
pp. 484-485
Keyword(s):  
Atlantic Ocean ◽  
North Atlantic ◽  
Surface Waters ◽  
North Atlantic Ocean ◽  
The North ◽  
The North Atlantic

In this paper an attempt is made to investigate the normal circulation of the surface waters of the Atlantic Ocean north of 40° N. lat., and its changes, by means of a series of synoptic charts showing the distribution of temperature and salinity over the area for each month of the two years 1896 and 1897.

scholarly journals Prevalence of the Chloroflexi-Related SAR202 Bacterioplankton Cluster throughout the Mesopelagic Zone and Deep Ocean

2004 ◽  
Vol 70 (5) ◽  
pp. 2836-2842 ◽  
Author(s):  
R. M. Morris ◽  
M. S. Rappé ◽  
E. Urbach ◽  
S. A. Connon ◽  
S. J. Giovannoni
Keyword(s):  
Time Series ◽  
Pacific Ocean ◽  
16S Rrna ◽  
Atlantic Ocean ◽  
North Atlantic ◽  
North Atlantic Ocean ◽  
16S Rrna Genes ◽  
Rrna Genes ◽  
The North ◽  
The North Atlantic

ABSTRACT Since their initial discovery in samples from the north Atlantic Ocean, 16S rRNA genes related to the environmental gene clone cluster known as SAR202 have been recovered from pelagic freshwater, marine sediment, soil, and deep subsurface terrestrial environments. Together, these clones form a major, monophyletic subgroup of the phylum Chloroflexi. While members of this diverse group are consistently identified in the marine environment, there are currently no cultured representatives, and very little is known about their distribution or abundance in the world's oceans. In this study, published and newly identified SAR202-related 16S rRNA gene sequences were used to further resolve the phylogeny of this cluster and to design taxon-specific oligonucleotide probes for fluorescence in situ hybridization. Direct cell counts from the Bermuda Atlantic time series study site in the north Atlantic Ocean, the Hawaii ocean time series site in the central Pacific Ocean, and along the Newport hydroline in eastern Pacific coastal waters showed that SAR202 cluster cells were most abundant below the deep chlorophyll maximum and that they persisted to 3,600 m in the Atlantic Ocean and to 4,000 m in the Pacific Ocean, the deepest samples used in this study. On average, members of the SAR202 group accounted for 10.2% (±5.7%) of all DNA-containing bacterioplankton between 500 and 4,000 m.

Pelagic tar balls collected in the North Atlantic Ocean and Caribbean Sea from 1988 to 2016 have natural and anthropogenic origins

2018 ◽  
Vol 137 ◽  
pp. 352-359 ◽  
Author(s):  
Hilary S. Green ◽  
Sarah A. Fuller ◽  
Audrey W. Meyer ◽  
Paul S. Joyce ◽  
Christoph Aeppli ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
North Atlantic ◽  
North Atlantic Ocean ◽  
Caribbean Sea ◽  
The North ◽  
Tar Balls ◽  
The North Atlantic

scholarly journals Methyl bromide cycling in a warm-core eddy of the North Atlantic Ocean

2002 ◽  
Vol 16 (4) ◽  
pp. 88-1-88-6 ◽  
Author(s):  
Shari A. Yvon-Lewis ◽  
James H. Butler ◽  
Eric S. Saltzman ◽  
Patricia A. Matrai ◽  
Daniel B. King ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
North Atlantic ◽  
Methyl Bromide ◽  
North Atlantic Ocean ◽  
The North ◽  
Warm Core ◽  
The North Atlantic

scholarly journals III. The circulation of the surface waters of the north atlantic ocean

1901 ◽  
Vol 196 (274-286) ◽  
pp. 61-203 ◽  
Keyword(s):  
Atlantic Ocean ◽  
North Atlantic ◽  
Surface Waters ◽  
Gulf Stream ◽  
North Atlantic Ocean ◽  
Critical Examination ◽  
Northern Latitude ◽  
The North ◽  
History Of ◽  
The North Atlantic

The history of our knowledge of the currents of the North Atlantic Ocean up to the year 1870 has been written once for all by Petermann (I), who in that year published a memoir maintaining, contrary to the opinion of Findlay, Blunt, and Carpenter, that eastern and northern extensions of the Gulf Stream were the prime factors in the circulation. Petermann subjected practically the whole of the material in the way of observations then extant to an exhaustive critical examination, and came to conclusions which are worth quoting, in the summary, inasmuch as the observations of the twenty succeeding years did not seriously modify them :— 1. The hot source and core of the Gulf Stream extends from the Strait of Florida, along the North American coast at all times.... up to the 37th degree of northern latitude.

scholarly journals Calcification in the planktonic foraminifera <i>Globigerina bulloides</i> linked to phosphate concentrations in surface waters of the North Atlantic Ocean

2012 ◽  
Vol 9 (5) ◽  
pp. 1725-1739 ◽  
Author(s):  
D. Aldridge ◽  
C. J. Beer ◽  
D. A. Purdie
Keyword(s):  
Atlantic Ocean ◽  
North Atlantic ◽  
Surface Waters ◽  
North Atlantic Ocean ◽  
Planktonic Foraminifera ◽  
Growth Conditions ◽  
Optimum Growth ◽  
Globigerina Bulloides ◽  
The North ◽  
The North Atlantic

Abstract. Marine calcifiers, such as planktonic foraminifera, form a major component of the global carbon cycle, acting as both a source and sink of CO2. Understanding factors that affect calcification in these organisms is therefore critical in predicting how the oceans will respond to increased CO2 concentrations in the atmosphere. Here, size-normalised weights (SNWs) of the planktonic foraminifera Globigerina bulloides, collected from the surface waters of the North Atlantic Ocean, are compared with in situ carbonate ion concentrations ([CO32–]), sea-surface temperature, optimum growth conditions and nutrient concentrations. Changes in phosphate concentrations ([PO43–], range: 0.04–0.39 μM) explained the majority of G. bulloides SNW variation, with reduced test masses at higher concentrations. Two factors already known to influence calcification in foraminifers, [CO32–] and temperature, were also positively correlated over the range of values examined (148–181 μM kg−1 and 10.3–12.7 °C respectively). No evidence was found for increased SNWs under apparent optimum growth conditions, indicated by G. bulloides abundances. However, "growth potentials" (μ), derived from modelled growth rates (d–1), were positively correlated with SNWs, suggesting that this may be a better proxy for optimum growth conditions. These findings point to the potential importance of [PO43–] in determining calcification intensities in foraminifera, a factor which has been overlooked by previous studies on these organisms. The confirmation of this via carefully controlled culture studies is recommended in the future.

Palmaria mollis stat. nov.: a newly recognized species of Palmaria (Rhodophyceae) from the northeast Pacific Ocean

1985 ◽  
Vol 63 (3) ◽  
pp. 398-403 ◽  
Author(s):  
John P. van der Meer ◽  
Carolyn J. Bird
Keyword(s):  
Pacific Ocean ◽  
Atlantic Ocean ◽  
North Atlantic ◽  
North Atlantic Ocean ◽  
North Pacific Ocean ◽  
Palmaria Palmata ◽  
Cytological Examination ◽  
The North ◽  
The Pacific ◽  
The North Atlantic

Attempts were made to hybridize Palmaria palmata (L.) O. Kuntze from the North Atlantic Ocean with Palmaria palmata f. mollis (Setchell and Gardner) Guiry from the eastern North Pacific Ocean. No hybrids were obtained in reciprocal crosses, although fertilization was readily achieved for control crosses within each taxon. The number and placement of carpogonia on well-developed female gametophytes (disc diameter, 100–150 μm) was different for the two taxa. The Atlantic plants had comparatively few carpogonia (1–10), which were always found at the center of the holdfast disc or on young upright fronds, whereas the Pacific plants had many carpogonia (15–60), which were most commonly located away from the centermost portion of the disc and were never observed on developing fronds. The two taxa also differed in their susceptibility to a small parasitic Oomycete of the genus Petersenia Sparrow, which is pathogenic for f. mollis but did not infect the Atlantic plants. Cytological examination revealed that f. mollis has n = 21 chromosomes, the same as P. palmata from the north Atlantic Ocean. In view of the genetic isolation between the two forms, P. palmata f. mollis is raised to specific status as Palmaria mollis (Setchell & Gardner) van der Meer & Bird.

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