Deep Ocean Optical Measurement (DOOM) Report: Bahama Channels and North-Western Atlantic Ocean

1972 ◽  
Author(s):  
Donald E. Matlack
Keyword(s):  
Atlantic Ocean ◽  
Optical Measurement ◽  
Deep Ocean ◽  
Western Atlantic ◽  
Western Atlantic Ocean ◽  
North Western

Age and growth of the great hammerhead shark, Sphyrna mokarran, in the north-western Atlantic Ocean and Gulf of Mexico

2010 ◽  
Vol 61 (9) ◽  
pp. 992 ◽  
Author(s):  
Andrew N. Piercy ◽  
John K. Carlson ◽  
Michelle S. Passerotti
Keyword(s):  
Atlantic Ocean ◽  
Gulf Of Mexico ◽  
Biological Data ◽  
Age And Growth ◽  
Von Bertalanffy ◽  
Western Atlantic ◽  
K Value ◽  
Hammerhead Shark ◽  
Western Atlantic Ocean ◽  
North Western

The great hammerhead shark, Sphyrna mokarran, is a cosmopolitan species that is caught in a variety of fisheries throughout much of its range. The apparent decline of great hammerhead shark populations has reinforced the need for accurate biological data to enhance fishery management plans. To this end, age and growth estimates for the great hammerhead were determined from sharks (n = 216) ranging in size from 54- to 315-cm fork length (FL), captured in the Gulf of Mexico and north-western Atlantic Ocean. Growth curves were fitted using multiple models and evaluated using Akaike’s information criterion. The von Bertalanffy growth model was the best fitting model, with resulting growth parameters of L∞ = 264.2-cm FL, k = 0.16 year–1, t0 = –1.99 year for males, and L∞ = 307.8-cm FL, k = 0.11 year–1, t0 = –2.86 year for females. Annual band pair deposition was confirmed through marginal-increment analysis and a concurrent bomb radiocarbon validation study. Great hammerheads have one of the oldest reported ages for any elasmobranch (44 years) but grow at relatively similar rates (on the basis of von Bertalanffy k value) to other large hammerhead species from this region. The present study is the first to provide vertebral ages for great hammerheads.

scholarly journals Latitudinal distributions of particulate carbon export across the North Western Atlantic Ocean

2017 ◽  
Vol 129 ◽  
pp. 116-130 ◽  
Author(s):  
Viena Puigcorbé ◽  
Montserrat Roca-Martí ◽  
Pere Masqué ◽  
Claudia Benitez-Nelson ◽  
Michiel Rutgers van der Loeff ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
Particulate Carbon ◽  
Carbon Export ◽  
Western Atlantic ◽  
Western Atlantic Ocean ◽  
The North ◽  
North Western

scholarly journals Remarks on the identification of the Albian/Cenomanian boundary and taxonomic clarification of the planktonic foraminifera index speciesglobotruncanoides, brotzeniandtehamaensis

2014 ◽  
Vol 152 (3) ◽  
pp. 521-536 ◽  
Author(s):  
MARIA ROSE PETRIZZO ◽  
MICHÈLE CARON ◽  
ISABELLA PREMOLI SILVA
Keyword(s):  
Atlantic Ocean ◽  
Planktonic Foraminifera ◽  
Taxonomic Status ◽  
Junior Synonym ◽  
Western Atlantic ◽  
Western Atlantic Ocean ◽  
Unequivocal Identification ◽  
Long Time ◽  
Stratotype Section ◽  
North Western

AbstractThe planktonic foraminifera assemblage across the Global Boundary Stratotype Section and Point (GSSP) for the base of the Cenomanian Stage defined at Mont Risou (Haute-Alpes in France) is here restudied to clarify the identification and stratigraphic distribution ofThalmanninella globotruncanoides( =Rotalipora globotruncanoidesSigal, 1948) andPseudothalmanninella tehamaensis( =Rotalipora tehamaensisMarianos & Zingula, 1966) whose appearance levels are primary and secondary criteria for placing the Albian/Cenomanian boundary. Since the ratification of the GSSP in 2002, the identification of the foraminifera index species across the Albian/Cenomanian boundary has been reported to be sometimes difficult either because of their rarity or uncertainty in the taxonomic identifications. We discuss the taxonomic status ofThalmanninella brotzeniSigal 1948, a species regarded for a long time to be a junior synonym ofTh. globotruncanoides, through images of Sigal's type materials deposited at the Musée National d’Histoire Naturelle (Paris), and elucidate the taxonomically important characters that enable unequivocal identification ofTh. brotzeni, Th. globotruncanoidesandPs. tehamaensis. Planktonic foraminifera marker species from Mont Risou are compared with well-preserved specimens from Blake Nose Plateau (ODP 171B, North Western Atlantic Ocean) to verify the reliability and stratigraphic distribution of these marker taxa outside the Mediterranean Tethyan area.

Genetic comparison of salmon from the White Sea and north-western Atlantic Ocean

1998 ◽  
Vol 53 (3) ◽  
pp. 569-580 ◽  
Author(s):  
O. Skaala ◽  
A. A. Makhrov ◽  
T. Karlsen ◽  
K. E. Jorstad ◽  
Y. P. Altukhov ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
White Sea ◽  
The White Sea ◽  
Western Atlantic ◽  
Western Atlantic Ocean ◽  
North Western ◽  
Genetic Comparison

scholarly journals Insights into the controls on metabolite distributions along a latitudinal transect of the western Atlantic Ocean

2021 ◽  
Author(s):  
Winifred M. Johnson ◽  
Melissa C. Kido Soule ◽  
Krista Longnecker ◽  
Maya P. Bhatia ◽  
Steven J. Hallam ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
Deep Ocean ◽  
Euphotic Zone ◽  
Biological Organization ◽  
Western Atlantic ◽  
Biologically Relevant ◽  
Western Atlantic Ocean ◽  
Latitudinal Transect ◽  
Essential Form ◽  
The Individual

AbstractMetabolites, or the small organic molecules that are synthesized by cells during metabolism, comprise a complex and dynamic pool of carbon in the ocean. They are an essential form of information, linking genotype to phenotype at the individual, population and community levels of biological organization. Characterizing metabolite distributions inside microbial cells and dissolved in seawater is essential to understanding the controls on their production and fate, as well as their roles in shaping marine microbial food webs. Here, we apply a targeted metabolomics method to quantify particulate and dissolved distributions of a suite of biologically relevant metabolites including vitamins, amino acids, nucleic acids, osmolytes, and intermediates in biosynthetic pathways along a latitudinal transect in the western Atlantic Ocean. We find that, in the euphotic zone, most particulate or intracellular metabolites positively co-vary with the most abundant microbial taxa. In contrast, dissolved metabolites exhibited greater variability with differences in distribution between ocean regions. Although fewer particulate metabolites were detected below the euphotic zone, molecules identified in the deep ocean may be linked to preservation of organic matter or adaptive physiological strategies of deep-sea microbes. Based on the identified metabolite distributions, we propose relationships between certain metabolites and microbial populations, and find that dissolved metabolite distributions are not directly related to their particulate abundances.

The wet deposition of trace metals to the western atlantic ocean at the mid-atlantic coast and on Bermuda

1984 ◽  
Vol 18 (12) ◽  
pp. 2657-2664 ◽  
Author(s):  
T.M. Churc ◽  
J.M. Tramontano ◽  
J.R. Scudlark ◽  
T.D. Jickells ◽  
J.J. Tokos ◽  
...  
Keyword(s):  
Trace Metals ◽  
Atlantic Ocean ◽  
Wet Deposition ◽  
Atlantic Coast ◽  
Western Atlantic ◽  
Western Atlantic Ocean
Sign in / Sign up

Export Citation Format

Share Document