The Influence of High Temperature and Two Hurricanes on the Success of Late Season Loggerhead Nests in Broward County, Florida, in 2005

The success of loggerhead nests, defined as the percentage of the eggs per nest resulting in live released hatchlings, declined to unusually low levels during the latter part of the 2005 season. The mean successes were 81.1, 61.1, 32.8 and 13.4 percent for nests deposited in May, June, July and August, respectively. Many eggs from the August nests appeared to be unusually dried. There was a significant inverse relationship (P \u3c .0001) between the daily air temperature anomaly on the day of nest deposition and the average daily success rate of loggerhead nests in 2005. The daily temperature anomaly is the deviation of the average air temperature each day from the daily climatological average values. There was also a highly significant inverse relationship between maximum daily air temperature and nest success rate in 2005. These relationships were not found in the previous two years. The actual average temperature during August in 2005 was 29.7°C, compared to 28.9 and 29.2°C in 2004 and 2003, respectively. The 2005 average was statistically different from the other two years (one way ANOVA, P \u3c .001) and also from the climatological average temperature of 28.6°C. Mean daily success rates were less than 50 percent for nests deposited during the 50 days preceding the impact of Hurricane Katrina on August 25. Nests deposited in the first two weeks of August were also impacted by Hurricane Rita. Mean daily success rates were less than 10 percent on 7 days during this period

Sea Turtle Conservation Program, Broward County, FL 2006 Report

Since 1978, the Broward County Environmental Protection Department (BCEPD) has provided for the conservation of endangered and threatened sea turtle species within its area of responsibility. Broward County is within the normal nesting areas of three species of sea turtles: the loggerhead sea turtle (Caretta caretta), the green sea turtle (Chelonia mydas) and the leatherback sea turtle (Dermochelys coriacea). The loggerhead is listed as a threatened species, while the green and leatherback are listed as endangered under the U.S. Endangered Species Act, 1973, and Chapter 370, F.S. Since these statutes strictly forbid any disturbance of sea turtles and their nests, conservation activities involving the relocation of nests from hazardous locations (especially necessary along heavily developed coasts) require permitting by the U.S. Fish and Wildlife Service (USFWS). In Florida, this permit is issued to the Florida Fish and Wildlife Conservation Commission (FFWCC) , Bureau of Protected Species Management, Tallahassee, Florida. This project was administered by the BCEPD and conducted by the Nova Southeastern University Oceanographic Center under Marine Turtle Permit # 108, issued to the BCEPD by the FWCC. The BCEPD is especially concerned with any environmental effects of intermittent beach nourishment projects on shorelines and the offshore reefs. As part of this concern, the BCEPD has maintained the sea turtle conservation program in non-nourishment years to provide a continuous database and for monitoring of completed nourishment projects. Nova Southeastern University received the contract to conduct the 2006 program. In addition to fulfilling statutory requirements, the purposes of the project were: to relocate eggs from nests deposited in sites threatened by natural processes or human activities and thus maximize hatchling survival, to accurately survey sea turtle nesting patterns to document historical trends and assess natural and anthropogenic factors affecting nesting patterns and densities, to assess the success of sea turtle recruitment and of hatchery operations in terms of nesting success, hatching success and total hatchlings released, to dispose of turtle carcasses, respond to strandings and other emergencies and maintain a 24-hour emergency cell phone for reporting of turtle incidents, and to inform and educate the public about sea turtles and their conservation

Sea Turtle Conservation Program, Broward County, FL 1990 Report

Since 1978, the Broward County Environmental Protection Department (BCEPD) has provided for the conservation of endangered and threatened sea turtle species within its area of responsibility. Broward County is within the normal nesting areas of three species of sea turtles: the loggerhead sea turtle (Caretta caretta), the green sea turtle (Chelonia mydas) and the leatherback sea turtle (Dermochelys coriacea). The loggerhead is listed as a threatened species, while the green and leatherback are listed as endangered under the U.S. Endangered Species Act, 1973, and Chapter 370, F.S. Since these statutes strictly forbid any disturbance of sea turtles and their nests, conservation activities involving the relocation of nests from hazardous locations (especially necessary along heavily developed coasts) require permitting by the U.S. Fish and Wildlife Service (USFWS). In Florida, this permit is issued to the Florida Department of Natural Resources (FDNR), which subsequently issues permits to individuals. universities and government agencies. This project was administered by the BCEPD and conducted by the Nova University Oceanographic Center under Marine Turtle Permit #129, issued to the BCEPD by the FDNR Institute of Marine Research, St. Petersburg, Florida. The BCEPD is especially concerned with any environmental effects of intermittent beach renourishment projects on shorelines and the offshore reefs. As part of this concern, the BCEPD has maintained the sea turtle conservation program in non-renourishment years to provide a continuous data base. Operation of the program is competitively bid and a contract award is issued based on a selection committee review of submitted bids through a weighted point factor procedure. Nova University was awarded the contract to conduct the 1990 program. In addition to fulfilling statutory requirements, the purposes of the project were: to relocate eggs from nests deposited in sites threatened by natural processes or human activities and thus maximize hatchling recruitment, to accurately survey sea turtle nesting patterns to determine any historical trends and assess natural and anthropogenic factors affecting nesting patterns and densities, to assess the success of sea turtle recruitment and of hatchery operations in terms of nesting success, hatching success and total hatchlings released, to dispose of turtle carcasses, respond to strandlngs and other emergencies and maintain a hot-line for reporting of turtle incidents, and to inform and educate the public on sea turtles and their conservation

Dissolved Carbohydrates in Seawater. II, A Spectrophotometric Procedure for Total Carbohydrate Analysis and Polysaccharide Estimation

A procedure is described which adds a hydrolysis step to the Johnson and Sieburth 3-methyl-2-benzothiazolinone hydrazone hydrochloride (MBTH) assay for total dissolved monosaccharides. The advantages of the monosaccharide test are retained in the total carbohydrate test, giving nearly equivalent responses for a variety of combined carbohydrates. A total sample of 50 ml is adequate for both total carbohydrate and monosaccharide assays which permit the estimation of polysaccharide by difference. Values for Narragansett Bay and adjacent waters ranged from 452 to 2023 μg l−1 for total dissolved carbohydrate, 272 to 1353 μg l−1 for polysaccharide, and 153 to 814 μg l−1 for monosaccharide, which accounted for 6–18%, 4–13%, and 2–5% of the total dissolved carbon, respectively. We suggest that this is a sensitive and precise procedure which will be useful for investigating the distribution of dissolved carbohydrates in seawater and factors which affect its production, distribution and utilization