scholarly journals EFFECT OF LAKE WORTH AND SOUTH LAKE WORTH INLETS ON THE MOVEMENT OF LITTORAL MATERIAL

2011 ◽  
Vol 1 (6) ◽  
pp. 24
Author(s):  
Edwin W. Eden, Jr.
Keyword(s):  
Atlantic Ocean ◽  
East Coast ◽  
Salt Water ◽  
Atlantic Coast ◽  
Barrier Beach ◽  
Offshore Area ◽  
Ocean Shore

Lake Worth and South Lake Worth Inlets are artificial inlets connecting Lake Worth with the Atlantic Ocean. They are located on the east coast of Florida about 70 miles north of Miami and 300 miles south of Jacksonville. Lake Worth is a salt-water sound extending in a north-south direction, generally parallel to the ocean shore, as shown on figure 1. It is separated from the ocean by a barrier beach, 250 feet to about 3,600 feet wide and up to about 25 feet in elevation. The barrier beach is composed principally of sand, a portion of which is artificial fill over former low-lying marshy areas. There are occasional outcroppings of coquina rock on the barrier beach and in the offshore area. In this locality the offshore bottom is rather steep; the 100-fathom depth, lying closer to the shore than along other parts of the Atlantic coast, is about 5-1/2 miles offshore at Lake Worth Inlet.

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

Discovery of Brachiella lageniformis (Copepoda: Lernaeopodidae) in the Canadian Pacific and its Significance to Zoogeography of the Genus Merluccius (Pisces: Teleostei)

1970 ◽  
Vol 27 (12) ◽  
pp. 2159-2165 ◽  
Author(s):  
Z. Kabata
Keyword(s):  
East Coast ◽  
Atlantic Coast ◽  
Vancouver Island ◽  
Male And Female ◽  
Merluccius Productus

Brachiella lageniformis, hitherto known only from the Atlantic coast of Argentina, was found off the east coast of Vancouver Island, on the gills of Merluccius productus. Both male and female are described and illustrated in detail. The significance of this find for Szidat's views on the origin of the genus Merluccius is discussed. A proposal is made to suppress the genus Parabrachiella and to place all its five species (P. rostrata, P. insidiosa, P. australis, P. spinicephala, and P. incurva) in the genus Brachiella.

scholarly journals PROCESS AND MORPHOLOGY CHARACTERISTICS OF TWO BARRIER BEACHES IN THE MAGDALEN ISLANDS, GULF OF ST. LAWRENCE, CANADA

1976 ◽  
Vol 1 (15) ◽  
pp. 114
Author(s):  
E.H. Owens
Keyword(s):  
Wave Energy ◽  
East Coast ◽  
Energy Levels ◽  
Morphological Characteristics ◽  
Dispersal Patterns ◽  
Barrier Beach ◽  
Sediment Dispersal ◽  
Sediment Redistribution ◽  
Barrier Beaches ◽  
Magdalen Islands

Detailed field investigations of barrier beach morphology and processes at adjacent sites in the Magdalen Islands, Gulf of St. Lawrence, show that the two beaches are in distinctly different morphodynamic environments. The differences are expressed in terms of wave energy levels, sediment dispersal patterns, and nearshore, littoral, and dune geomorphology. The exposed west-facing coast has a steeper offshore gradient, is a zone of sediment bypassing, and has a complex sequence of three nearshore bars. Wave energy levels are lower on the sheltered east coast, and this is a zone of sediment redistribution and deposition with a single, linear nearshore bar. The different morphological characteristics of the two barriers are attributed to the spatial variation in energy levels and to the differences in offshore gradients on the two coasts. Computed wave energy values, derived from data monitored during two study periods (August and November, 1974), indicate that the mean wave energy levels were greater on the west coast as compared to the east coast by factors of 2.25 in summer and 2.95 in winter. This is due primarily to the dominance of winds out of the westerly quadrant throughout the year. 1975

scholarly journals Total mercury concentrations in invasive lionfish (Pterois volitans/miles) from the Atlantic coast of Florida

2020 ◽  
Author(s):  
Eric G. Johnson ◽  
Angelina Dichiera ◽  
Danielle Goldberg ◽  
MaryKate Swenarton ◽  
James Gelsleichter
Keyword(s):  
Total Mercury ◽  
East Coast ◽  
Trophic Position ◽  
Atlantic Coast ◽  
Marine Fishes ◽  
Pterois Volitans ◽  
Western Atlantic ◽  
Significant Barrier ◽  
Invasive Lionfish ◽  
Mercury Bioaccumulation

ABSTRACTInvasive lionfish (Pterois volitans/miles) pose a serious threat to marine ecosystems throughout the western Atlantic Ocean and Caribbean Sea. The development of a fishery for lionfish has been proposed as a strategy for controlling populations; however, there is concern about consumption of this species by humans due to its high trophic position and potential for bioaccumulation of mercury. We analyzed total mercury (THg) in tissues of lionfish from two locations on the east coast of Florida. THg in lionfish increased with size and differed by location and sex. THg was highest in muscle tissue and was strongly positively correlated among tissues. THg in lionfish was lower than other commonly consumed marine fishes, and falls into Florida’s least restrictive advisory level. Consumption of lionfish poses a low risk and concerns over mercury bioaccumulation should not present a significant barrier to lionfish harvest.

scholarly journals New records of benthic marine algae from Morocco (eastern Atlantic Ocean): morphology, taxonomy and distribution

2018 ◽  
Vol 43 ◽  
pp. 111-116
Author(s):  
Mustapha Hassoun ◽  
Hanaa Moussa ◽  
Ghizlane Salhi ◽  
Hanaa Zbakh ◽  
Hassane Riadi ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
New Record ◽  
Pacific Islands ◽  
New Records ◽  
Atlantic Coast ◽  
Marine Macroalgae ◽  
Eastern Coast ◽  
Western Coast ◽  
Eastern Atlantic Ocean ◽  
First Time

AbstractWe report new records and corological data for three Moroccan marine macroalgae that complete their distribution information. Radicilingua thysanorhizans is new record for Morocco; Champia compressa is recorded for the first time from the eastern coast of the Atlantic Ocean. Diplothamnion jolyi is widely distributed in the western coast of the Atlantic coast and Pacific Islands, and recently reported from the Mediterranean Sea; this new record from Moroccan Atlantic coast extends their distribution range.Key words: Algae, Atlantic Ocean, Champia compressa, Diplothamnion jolyi, Radicilingua thysanorhizans.ResumenSe aportan nuevos registros y datos corológicos para tres macroalgas marinas de Marruecos, que completan la información sobre su distribución. Radicilingua thysanorhizans es cita nueva para Marruecos. Champia compressa se registra por la primera vez en la costa oriental del Océano Atlántico. Diplothamnion jolyi se distribuye ampliamente en la costa occidental de la costa atlántica y las islas del Pacífico y ha sido recientemente citada en el mar Mediterráneo; esta nueva cita para costa Atlántica Marroquí amplia su rango de distribución.Palabras clave: Algae, Océano Atlántico, Champia compressa, Diplothamnion jolyi, Radicilingua thysanorhizans.

The first North American record of Carinodens belgicus (Squamata, Mosasauridae) and correlation with the youngest in situ examples from the Maastrichtian type area: palaeoecological implications

2013 ◽  
Vol 92 (2-3) ◽  
pp. 145-152 ◽  
Author(s):  
E.W.A. Mulder ◽  
P. Formanoy ◽  
W.B. Gallagher ◽  
J.W.M. Jagt ◽  
A.S. Schulp
Keyword(s):  
North America ◽  
Atlantic Ocean ◽  
North American ◽  
Atlantic Coast ◽  
First Record ◽  
Type Area

AbstractFour recently collected tooth crowns of the rare latest Cretaceous (late Maastrichtian) durophagous mosasaur Carinodens belgicus are discussed; the first record from the Atlantic coast of North America (Maryland), and three additional in situ examples from the Maastrichtian type area in the southeast Netherlands and northeast Belgium. Also presented are an updated overview of the material recorded to date, and a discussion of the palaeobiogeographical and palaeoenvironmental distribution of the genus. Towards the end of the Cretaceous, Carinodens appears to have been successful in exploiting the margins of both the proto-Atlantic Ocean and the Tethyan Realm.

Two new species of Styela (Tunicata: Ascidiacea) from the tropical West Atlantic Ocean

Zootaxa ◽  
2021 ◽  
Vol 4948 (2) ◽  
pp. 275-286
Author(s):  
RODOLFO CORRÊA DE BARROS ◽  
ROSANA MOREIRA DA ROCHA
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
Shallow Water ◽  
Atlantic Coast ◽  
The Body ◽  
The South ◽  
Bocas Del Toro ◽  
Espírito Santo ◽  
Two New Species ◽  
Espirito Santo

Two new species of the genus Styela are described, with very rare characteristics in this genus: both are shallow-water and tropical, with more than two gonads in each side of the body. Styela panamensis sp. nov. is described from specimens collected in Bocas del Toro, Atlantic coast of Panama, and Styela multicarpa sp. nov. from specimens collected in Espírito Santo, Brazil and Margarita Island, Venezuela. They are probably native to the south Caribbean and S. multicarpa sp. nov. is introduced in Brazil. 

Shark Nursery Grounds of the Gulf of Mexico and the East Coast Waters of the United States

2007 ◽  
Keyword(s):  
United States ◽  
Gulf Of Mexico ◽  
East Coast ◽  
Gulf Coast ◽  
Atlantic Coast ◽  
The United States ◽  
Shark Species ◽  
Carcharhinus Plumbeus ◽  
Nursery Areas ◽  
Pesticide Metabolites

<em>Abstract.</em>—Because of their tendency to accumulate in estuaries and coastal regions, organochlorine (OC) contaminants such as pesticides and polychlorinated biphenyls (PCBs) represent potential threats to the quality of essential fish habitat for many shark species. These compounds pose special risks to immature sharks in particular because of their ability to impair growth and sexual maturation in juvenile fish at environmentally relevant levels of exposure. In order to assess the extent of these risks in shark populations on the East Coast of the United States, the present study examined concentrations of 30 OC pesticides/pesticide metabolites and total PCBs in juvenile sandbar <em>Carcharhinus plumbeus </em>and blacktip <em>C. limbatus </em>sharks from seven major nursery areas in the western Atlantic Ocean and eastern Gulf of Mexico. Quantifiable levels of PCBs and 13 OC pesticides/ pesticide metabolites were detected via gas chromatography and mass spectrometry in liver of 25 young-of-the-year blacktip sharks from the southeastern U.S. Atlantic coast and three regions on Florida’s gulf coast: Cedar Key, Tampa Bay, and Charlotte Harbor. Similarly, quantifiable levels of PCBs and 14 OC pesticides/metabolites were detected in 23 juvenile <em>C. plumbeus </em>from three sites on the northeastern U.S. coast: middle Delaware Bay, lower Chesapeake Bay, and Virginia’s eastern shore. Liver OC concentrations in Atlantic sandbar and blacktip sharks were higher than expected and, in some cases, comparable with elevated levels observed in deep-sea and pelagic sharks. Although significantly lower than those observed in Atlantic sharks, pesticide and PCB levels in Florida blacktip sharks were similar to, if not greater than, OC concentrations reported in adults of other coastal shark species. Based on these data, OC contamination appears to pose significant threats to habitat quality in sandbar and blacktip shark nursery areas on the U.S. Atlantic coast.

Minor metabolites of the cold water soft coral Gersemia rubiformis

1988 ◽  
Vol 66 (11) ◽  
pp. 2928-2934 ◽  
Author(s):  
David E. Williams ◽  
Raymond J. Andersen ◽  
John F. Kingston ◽  
Alex G. Fallis
Keyword(s):  
Atlantic Ocean ◽  
Spectroscopic Analysis ◽  
Pacific Coast ◽  
Soft Coral ◽  
Cold Water ◽  
Atlantic Coast ◽  
New Metabolites

The minor metabolites of both Pacific and Atlantic Ocean specimens of the cold water soft coral Gersemia rubiformis have been investigated. Pacific coast animals yielded two new pseudopterane diterpenoids, isogersemolides A (11) and B (12), and four new cembrane diterpenoids, isoepilophodiones A (13), B (14), and C (15) and rubifol (16). Atlantic coast animals yielded 3-acetoxy-β-cubebene (17). The proposed structures of all the new metabolites are based on spectroscopic analysis and chemical interconversions.

scholarly journals Synoptic influences on springtime tropospheric O<sub>3</sub> and CO over the North American export region observed by TES

2009 ◽  
Vol 9 (11) ◽  
pp. 3755-3776 ◽  
Author(s):  
J. Hegarty ◽  
H. Mao ◽  
R. Talbot
Keyword(s):  
Atlantic Ocean ◽  
North Atlantic ◽  
North American ◽  
East Coast ◽  
North Atlantic Ocean ◽  
Free Troposphere ◽  
The North ◽  
Circulation Patterns ◽  
The Us ◽  
Us East Coast

Abstract. The relationship between synoptic circulation patterns over the western North Atlantic Ocean in spring (March, April, and May) and tropospheric O3 and CO was investigated using retrievals from the Tropospheric Emission Spectrometer (TES) for 2005 and 2006. Seasonal composites of TES retrievals reprocessed to remove the artificial geographic structure added from the a priori revealed a channel of slightly elevated O3 (>55 ppbv) and CO (>115 ppbv) at the 681 hPa retrieval level between 30° N and 45° N extending from North America out over the Atlantic Ocean. Ozone and CO in this region were correlated at r=0.22 with a slope value of 0.13 mol mol−1 indicative of the overall impact of photochemical chemical processes in North American continental export. Composites of TES retrievals for the six predominant circulation patterns identified as map types from sea level pressure fields of the NCEP FNL analyses showed large variability in the distribution of tropospheric O3. Map types MAM2 and MAM3 featuring cyclones near the US east coast produced the greatest export to the lower free troposphere with O3>65 ppbv and a relatively well-defined O3-CO correlation (slope values near 0.20 mol mol−1). The ensembles of HYSPLIT backward trajectories indicated that the high O3 levels were possibly a result of pollutants lofted to the free troposphere by the warm conveyor belt (WCB) of a cyclone. An important finding was that pollutant export occurred in the main WCB branch to the east of the cyclone and in a secondary branch circling to the back of the cyclone center. Conversely, a map type featuring a large anticyclone dominating the flow over the US east coast (MAM6) restricted export with O3 levels generally <55 ppbv and CO levels generally <110 ppbv. There was also evidence of stratospheric intrusions particularly to the north of 45° N in the 316 hPa composites predominately for MAM1 which featured a large cyclone near Newfoundland. However, the concurrence of these intrusions with pollutant export, specifically in the southwestern North Atlantic Ocean, made it difficult to delineate their respective contributions to the 681 hPa O3 composites.

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