Cadmium content in fresh and canned squid (Loligo opalescens) from the Pacific coastal waters of California (USA)

2009 ◽  
Vol 2 (1) ◽  
pp. 38-43 ◽  
Author(s):  
A. Galitsopoulou ◽  
D. Georgantelis ◽  
M.G. Kontominas
Keyword(s):  
Coastal Waters ◽  
Cadmium Content ◽  
Loligo Opalescens ◽  
The Pacific

Waste Disposal in the Sea off Southern California

1986 ◽  
Vol 18 (11) ◽  
pp. 1-9 ◽  
Author(s):  
Willard Bascom
Keyword(s):  
Waste Water ◽  
Coastal Waters ◽  
Southern California ◽  
State Standards ◽  
Waste Streams ◽  
Cool Water ◽  
Water Research ◽  
The Pacific ◽  
Steady Improvement ◽  
Deep Cool

Southern California, with a coastal population of 12 million people, releases about 4.4 million cubic meters of treated waste water into the Pacific every day via outfalls that discharge three to six kilometers offshore at a depth of 60 meters. Diffusers cause each liter of waste to be diluted by 150 liters of deep cool water preventing it from reaching the surface except for short periods in winter. Data on the constituents of the four largest waste streams are presented and a brief account of the research done by the Southern California Coastal Water Research Project is given. Although the waste water now discharged meets rigorous state standards (with minor exceptions) and the steady improvement in sea conditions over a decade has been well documented, there is a continuing debate over whether our coastal waters are adequately protected. This is primarily because the damaging effects of DDT and PCBs that were discharged more than 14 years ago have been slow to go away. Although the amounts of DDT and PCB in sea animals are only one- tenth what they were a decade ago they tend to obscure the value of the improvements and the present discharge practices. The alternatives to sea disposal seem likely to cause greater damage to the overall environment.

scholarly journals haracterizing the Effects of Two Storms on the Coastal Waters of O‘ahu, Hawai‘i, Using Data from the Pacific Islands Ocean Observing System

Oceanography ◽  
2011 ◽  
Vol 24 (2) ◽  
pp. 182-199 ◽  
Author(s):  
Michael Tomlinson ◽  
Eric De Carlo ◽  
Margaret McManus ◽  
Geno Pawlak ◽  
Grieg Steward ◽  
...  
Keyword(s):  
Coastal Waters ◽  
Pacific Islands ◽  
The Pacific ◽  
Using Data ◽  
Ocean Observing

The biogeography of origin and radiation: dendrasterid sand dollars in the northeastern Pacific

Paleobiology ◽  
1991 ◽  
Vol 17 (4) ◽  
pp. 325-339 ◽  
Author(s):  
Steven C. Beadle
Keyword(s):  
Coastal Waters ◽  
Pacific Coast ◽  
Sand Dollar ◽  
Central California ◽  
The Pacific ◽  
Northeastern Pacific ◽  
Place Of Origin ◽  
Transitional Forms ◽  
Sand Dollars ◽  
And Behavior

Under favorable circumstances, biogeographic and biostratigraphic data can be combined to identify accurately the time and place of origin of a given taxon, and to reconstruct the pattern of its subsequent radiation. This study considers the dendrasterid sand dollars, which are abundant today along the Pacific Coast of North America. The Neogene sand dollar record in this region is particularly good; in fact, sand dollars have traditionally been used as provincial index fossils.The dendrasterids originated in central California at the end of the Miocene; the oldest forms are dated at about 6.0–6.5 Ma. They spread south to Baja California during the Pliocene, and then north to Alaska during the Quaternary. This historical pattern is not an artifact of the record; it is consistent with independent paleogeographic evidence. The dendrasterids supplanted an older Mio-Pliocene sand dollar fauna; they are now completely dominant in the temperate coastal waters of the northeastern Pacific. They have reached this position in less than 7 m.y. since their first local appearance. The rapid rise of dendrasterids could be related to their aberrant morphology and behavior; these adaptations allow dendrasterids to suspension-feed, in a manner unique among living echinoids.Dendrasterids are characterized by “eccentric” test morphologies. Even the oldest species are highly eccentric; transitional forms are unknown. The first dendrasterids appear suddenly in the provincial “Jacalitos Stage,” above an unconformity which represents no more than about 1 m.y. They do not occur in the underlying units, although other fossil sand dollars are abundant. The dendrasterids may have arisen rapidly, through a heterochronic change in the development of older, noneccentric forms. Recent ontogenetic studies have documented the feasibility of this process.

New Zealand exports: Pseudosphaeroma Chilton, 1909 (Isopoda: Sphaeromatidae), a Southern Hemisphere genus introduced to the Pacific coast of North America

Zootaxa ◽  
2008 ◽  
Vol 1908 (1) ◽  
pp. 51-56 ◽  
Author(s):  
NIEL L. BRUCE ◽  
REGINA WETZER
Keyword(s):  
New Zealand ◽  
North America ◽  
Southern Hemisphere ◽  
San Francisco ◽  
Coastal Waters ◽  
Pacific Coast ◽  
First Record ◽  
The Pacific ◽  
First Time ◽  
Coast Region

Collections made along the coast of California have revealed the presence of a species of Pseudosphaeroma Chilton, 1909, a genus common in New Zealand coastal waters. The genus is entirely Southern Hemisphere in distribution, and this record reports the introduction of a species of Pseudosphaeroma into the San Francisco and Central Coast region of California, the first reported occurrence of the genus as an invasive taxon, and the first record of the genus from the Northern Hemisphere. The genus is also recorded for the first time from the Galapagos and Argentina.

scholarly journals SOME ASPECTS OF COASTAL ENGINEERING RESEARCH WORKS IN CHINA

1980 ◽  
Vol 1 (17) ◽  
pp. 105
Author(s):  
Yen Kai
Keyword(s):  
Coastal Waters ◽  
Yellow River ◽  
Coastal Engineering ◽  
Pearl River ◽  
Beach Profile ◽  
The West ◽  
Engineering Research ◽  
The Pacific ◽  
Continental Part ◽  
The Pearl River

China has a long coastline. Only for the continental part of China, the length of coastline amounts to 18,000 km and, when including the coastline of more than 6,400 islands, an overall length of more than 32,000 km may be counted. As far as the geographical features are concerned, China is characterized by the prevalence of plateau in the west, such as plateau of Tibet and Sinkiang regions and plateau of Yunnan and Kweichow provinces. There are nearly a hundred rivers, the most prominent of which are: the Yangtze River, the Yellow River, the Pearl River etc., flowing from west to east into the Pacific, and carrying about 2,000 million tons of sediment each year to the sea. As a result, silty coasts prevail in the vicinity of estuaries while sandy coasts emerge from a distance away. Generally speaking, the depth of coastal waters is comparatively small, especially along the silty coasts, where the beach profile presents a very gentle slope, varying from 1/50 to 1/500, and in some extreme cases even to 1/2000. Hence the maintenance of water depth in coastal harbours and estuaries has become one of salient problems of coastal engineering in our country.

scholarly journals Salish Sea a Key Source of Regional Marine Nutrients

Eos ◽  
2015 ◽  
Vol 96 ◽  
Author(s):  
Eric Betz
Keyword(s):  
Pacific Northwest ◽  
Coastal Waters ◽  
Large Fraction ◽  
Salish Sea ◽  
The Pacific ◽  
Marine Nutrients

A new examination of nitrogen in the coastal waters off the Pacific Northwest shows that the Salish Sea delivers a large fraction of nutrients to shelf waters.

scholarly journals Oceanic adults, coastal juveniles: tracking the habitat use of whale sharks off the Pacific coast of Mexico

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e3271 ◽  
Author(s):  
Dení Ramírez-Macías ◽  
Nuno Queiroz ◽  
Simon J. Pierce ◽  
Nicolas E. Humphries ◽  
David W. Sims ◽  
...  
Keyword(s):  
Coastal Waters ◽  
Gulf Of California ◽  
Pacific Coast ◽  
Early Morning ◽  
Eastern Pacific Ocean ◽  
Archival Tags ◽  
The Pacific ◽  
Habitat Differences ◽  
Frontal Zones ◽  
Whale Sharks

Eight whale sharks tagged with pop-up satellite archival tags off the Gulf of California, Mexico, were tracked for periods of 14–134 days. Five of these sharks were adults, with four females visually assessed to be pregnant. At least for the periods they were tracked, juveniles remained in the Gulf of California while adults moved offshore into the eastern Pacific Ocean. We propose that parturition occurs in these offshore waters. Excluding two juveniles that remained in the shallow tagging area for the duration of tracking, all sharks spent 65 ± 20.7% (SD) of their time near the surface, even over deep water, often in association with frontal zones characterized by cool-water upwelling. While these six sharks all made dives into the meso- or bathypelagic zones, with two sharks reaching the maximum depth recordable by the tags (1285.8 m), time spent at these depths represented a small proportion of the overall tracks. Most deep dives (72.7%) took place during the day, particularly during the early morning and late afternoon. Pronounced habitat differences by ontogenetic stage suggest that adult whale sharks are less likely to frequent coastal waters after the onset of maturity.

Sign in / Sign up

Export Citation Format

Share Document