Download or read book Assessment of Organohalogen Contaminants in Benthic Juvenile Loggerhead Sea Turtles Caretta Caretta from Coastal North Carolina Including Method Development Blood Compartment Partitioning and Temporal Analysis with Emphasis on Polybrominated Diphenyl Ethers written by Brianna K. R. Carlson and published by . This book was released on 2006 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spatial and Temporal Trends of Perfluorinated Compounds in Juvenile Loggerhead Sea Turtles Caretta Caretta Along the East Coast of the United States written by Steven Gehrig O'Connell and published by . This book was released on 2009 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt: Perfluorinated compounds (PFCs) are globally distributed persistent environmental contaminants. This study provides temporal trends as well as large-scale spatial trends of PFC concentrations in threatened juvenile loggerhead sea turtles from Florida Bay, Florida, Cape Canaveral, Florida, Charleston, South Carolina, Core Sound, North Carolina, and Chesapeake Bay, Maryland. PFCs were extracted from 164 plasma and serum samples using solid-phase extraction and quantified with LC/MS/MS. Perfluorooctane sulfonate (PFOS) was the predominant compound detected in all loggerhead sea turtle samples (range 0.31 to 39.0 ng/g). Concentrations of six compounds significantly varied by location (≤0.01), with MD or FL Bay turtles having the highest PFC concentrations. FL turtles occupying inshore embayments had a higher proportion of perfluorocarboxylates compared to PFOS than other study sites. This study was the first to correlate wildlife PFC concentrations with human abundance; however, no significant correlation was found among study sites. PFOS and perfluorononanoate (PFNA) significantly decreased from 2000-2008 in the SC turtles (≤0.02) by 20% and 11%, respectively. PFOS and perfluorodecanoate (PFDA) were correlated to each other independent of region or year (r2 ≥0.50). Future investigations should continue temporal assessments as PFC regulations change and attempt to pinpoint specific sources and transport pathways in areas with higher PFC contamination.
Download or read book Life History and Environmental Requirements of Loggerhead Turtles written by David A. Nelson and published by . This book was released on 1988 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Life History and Environmental Requirements of Loggerhead Turtles written by David Arthur Nelson and published by . This book was released on 1988 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessment of Persistent Organochlorine Pollutants in Loggerhead Sea Turtle Eggs Caretta Caretta chelonii Cheloniidae from Florida USA written by Juan José Alava Saltos and published by . This book was released on 2004 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synopsis of the Biological Data on the Loggerhead Sea Turtle written by C. Kenneth Dodd and published by . This book was released on 1988 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Petroleum on the Development and Survival of Marine Turtle Embryos written by Thomas H. Fritts and published by . This book was released on 1982 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Organohalogen Contaminant Analysis in Sea Turtle Blood written by Bob Swarthout and published by . This book was released on 2006 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Persistent Organic Pollutants in Blood Plasma of Adult Male Loggerhead Sea Turtles Caretta Caretta written by Jared M. Ragland and published by . This book was released on 2010 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synopsis of the Biological Data on the Loggerhead Sea Turtle written by C. Kenneth Dodd and published by . This book was released on 1988 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Marine Plastics as a Source of Hamful Contaminants in Loggerhead Sea Turtles Caretta Caretta written by Samantha Nicole Athey and published by . This book was released on 2017 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessing Beach Nourishment Impacts on Loggerhead Sea Turtle Caretta Caretta Reproduction on Bogue Banks Island North Carolina written by Alicia Nicole Mihnovets and published by . This book was released on 2005 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Stranded Loggerhead Sea Turtles Caretta Caretta in North and South Carolina written by Kristen T. Mazzarella and published by . This book was released on 2007 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Report on the Designation of Marine Critical Habitat for the Loggerhead Sea Turtle Caretta Caretta written by and published by . This book was released on 2013 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This report contains a biological assessment of specific areas that may be considered for designation of critical habitat for the threatened Northwest Atlantic Ocean and the endangered North Pacific Ocean Distinct Population Segments (DPSs) of the loggerhead sea turtle (Caretta caretta). The designation of critical habitat was prompted by a 2011 final rule revising the listing of loggerhead sea turtles under the ESA from a single worldwide listing of the species as threatened to nine DPSs, listed as either threatened or endangered. The two DPSs that are the subject of this biological report - the Northwest Atlantic Ocean and North Pacific Ocean - are the only DPSs of loggerheads that occur within U.S. jurisdiction. Although American Samoa, an unincorporated territory of the United States, is located within the general geographical area associated with the South Pacific Ocean DPS, loggerheads are not known to occur there"--Executive summary.
Download or read book Effects of Beach Nourishment on the Nesting Environment of Loggerhead Sea Turtles Caretta Caretta written by Doug Piatkowski and published by . This book was released on 2002 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Environmental and Anthropogenic Factors on Loggerhead Sea Turtle Caretta Caretta False Crawl Rates on Jekyll Island Ga written by Brittany Byrd and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Loggerhead sea turtles (Caretta caretta) are currently listed as "vulnerable" on the IUCN Red List and are experiencing population declines across many parts of their range. These declines are caused by environmental and anthropogenic stressors which impact sea turtle ecology and behavior, including nesting behavior. One nesting behavior sea turtles exhibit is known as "false crawling," which is when a female sea turtle ascends the beach in an attempt to nest and either abandons the attempt altogether or while in the middle of digging an egg chamber. False crawling, a largely understudied sea turtle behavior, can not only be detrimental to the reproductive output of an individual female but could negatively impact an entire population's reproductive success if the behavior is widespread. To investigate the different environmental and anthropogenic factors that may affect false crawling behavior in loggerheads we used historical survey data to determine the impact of a large anthropogenic structure (revetment) on a loggerhead nesting beach on Jekyll Island, GA. We then conducted surveys of the same beach for two years to assess the effects of lighting pollution, sand surface temperature, sand subsurface temperature, human presence, anthropogenic obstructions, and marine debris. For the 2008 - 2019 nesting seasons, we found that loggerhead false crawling rates were significantly higher near the revetment than on other parts of the beach, and that loggerheads mostly avoided trying to nest near the revetment at all. For the 2020 and 2021 nesting seasons, we found that sand subsurface temperature, human presence, and location relative to the revetment each significantly affected loggerhead false crawl rates, though sometimes in surprising ways. Overall, these results suggest that on Jekyll Island false crawling by loggerheads has been primarily caused by the presence of a large anthropogenic obstruction, but that other factors can also affect false crawling in context-specific ways.
Download or read book Environmental Impact Research Program Life History and Environmental Requirements of Loggerhead Sea Turtles written by David A. Nelson and published by . This book was released on 1986 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the United States, scattered nestings of loggerhead sea turtles (Caretta caretta) may occur in most of its range from Texas to Florida and Florida to New Jersey; however, nesting concentrations occur on coastal islands of North Carolina, South Carolina, and Georgia and the coasts of Florida. The greatest portion of a loggerhead's life is spent in ocean and estuarine waters where they breed, feed, migrate, and hibernate. The remainder of their life is spent on coastal beaches where the female digs a nest and lays her eggs, the eggs hatch, and the hatchlings crawl to the water to become part of the aquatic system again. Mating is believed to occur in shallow water adjacent to nesting beaches just prior to nesting and egg laying. Nesting activity begins in the spring, peaks in midsummer, and declines until completion in late summer. A loggerhead female generally nests every other year or every third year. A small percentage nest at intervals less than 2 years or more than 3 years. When a loggerhead nests, it usually layes two to three cluthes of eggs per season (range one to five). Temperature is a major factor influencing sea turtle life histories. Sand temperature affects nest site selection by adult females, the incubation time and hatching success of eggs, and the sex and emergence timing of hatchlings, whereas water temperature affects nesting activity and movements of adults.
