scholarly journals Deposition and fate of modern organic carbon in shelf/upper slope sediments near Cape Hatteras, North Carolina. Final report

1998 ◽  
Author(s):  
Christopher Martens ◽  
Marc Alperin ◽  
Daniel Albert
Keyword(s):  
North Carolina ◽  
Organic Carbon ◽  
Final Report ◽  
Cape Hatteras ◽  
Upper Slope

Organic carbon deposition on the North Carolina continental slope off Cape Hatteras (USA)

2002 ◽  
Vol 49 (20) ◽  
pp. 4687-4709 ◽  
Author(s):  
C.J Thomas ◽  
N.E Blair ◽  
M.J Alperin ◽  
D.J DeMaster ◽  
R.A Jahnke ◽  
...  
Keyword(s):  
North Carolina ◽  
Organic Carbon ◽  
Continental Slope ◽  
Carbon Deposition ◽  
The North ◽  
Cape Hatteras

Life history analysis of five dominant infaunal polychaete species from the continental slope off North Carolina

1993 ◽  
Vol 73 (1) ◽  
pp. 123-141 ◽  
Author(s):  
James A. Blake
Keyword(s):  
North Carolina ◽  
Life History ◽  
Continental Slope ◽  
Late Summer ◽  
Frequency Data ◽  
Size Frequency ◽  
History Analysis ◽  
Cape Hatteras ◽  
Lower Slope ◽  
Upper Slope

Observations were made on the reproduction and life history of five species of polychaetes collected from the continental slope off North Carolina, USA. Three species were studied at a 2000-m lower slope station off Cape Lookout (Aurospio dibranchiata, Microrbinia linea, and Pholoe anoculata) and the other two at a 600-m upper slope station off Cape Hatteras (Cossura longocirrata and Scalibregma inflatum). Aurospio dibranchiata, a surface feeding spionid, exhibited seasonally in egg diameter and size-frequency data, with the larger sizes occurring in late summer months. Pholoe anoculata, a small carnivorous scale worm, did not exhibit any evidence of seasonality in size-frequency data at the 2000-m station. Sexually mature specimens were absent from this population, but were present at shallower slope depths, indicating year-round recruitment into the lower slope from middle and upper slope populations.

Nursing and Environmental Health Roundtable: August 26-27, 2002, Research Triangle Park, North Carolina: Final Report

2002 ◽  
Author(s):  
Teresa Nastoff ◽  
◽  
Diane M. Drew ◽  
Pamela S. Wigington ◽  
Julie Wakefield ◽  
...  
Keyword(s):  
North Carolina ◽  
Environmental Health ◽  
Final Report ◽  
Research Triangle

scholarly journals Effects of a scientific echo sounder on the behavior of short-finned pilot whales (Globicephala macrorhynchus)

2017 ◽  
Vol 74 (5) ◽  
pp. 716-726 ◽  
Author(s):  
Nicola Quick ◽  
Lindesay Scott-Hayward ◽  
Dina Sadykova ◽  
Doug Nowacek ◽  
Andrew Read
Keyword(s):  
North Carolina ◽  
Generalized Estimating Equations ◽  
Marine Mammals ◽  
Hidden Markov ◽  
Experimental Conditions ◽  
Cape Hatteras ◽  
Consistent Increase ◽  
Pilot Whales ◽  
Acoustic Recording ◽  
Echo Sounder

Active echo sounding devices are often employed for commercial or scientific purposes in the foraging habitats of marine mammals. We conducted an experiment off Cape Hatteras, North Carolina, USA, to assess whether the behavior of short-finned pilot whales (Globicephala macrorhynchus) changed when exposed to an EK60 scientific echo sounder. We attached digital acoustic recording tags (DTAGs) to nine individuals, five of which were exposed. A hidden Markov model to characterize diving states with and without exposure provided no evidence for a change in foraging behavior. However, generalized estimating equations to model changes in heading variance over the entire tag record under all experimental conditions showed a consistent increase in heading variance during exposure over all values of depth and pitch. This suggests that regardless of behavioral state, the whales changed their heading more frequently when the echo sounder was active. This response could represent increased vigilance in which whales maintained awareness of echo sounder location by increasing their heading variance and provides the first quantitative analysis on reactions of cetaceans to a scientific echo sounder.

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