Monitoring green turtle population dynamics in Shoalwater Bay 2000-2004

The Great Barrier Reef Marine Park Authority (GBRMPA) and the Queensland Environmental Protection Agency (QEPA) are pleased to publish this report on the monitoring of a foraging ground population for the southern Great Barrier Reef green turtle genetic stock

Mental health wellness in tertiary education 2023 work presentation.

Research presented to student learning academic staff at personal development day. Background prior to research including reasons for the project were discussed, followed by presenting findings. The research asked how mental health is defined, trends and how tertiary providers could best support mental health well-being in the future

Liberation of women: Sexual repression and the family

https://stars.library.ucf.edu/prism/1036/thumbnail.jp

Inter- and intra-beach thermal variation for Green Turtle nests on Ascension Island, South Atlantic

Nest temperatures for green turtles (Chelonia mydas) nesting on Ascension Island, South Atlantic (7°57\u27S 14°22\u27W), were examined. Temperature probes were placed into nests on two beaches, Long Beach (26 nests) and North East Bay (8 nests). Within these beaches there was relatively little thermal variation (SD of nest temperature was 0.32°C for Long Beach and 0.30°C for North East Bay). To examine inter-beach thermal variation temperature probes were buried at 55 cm on 12 beaches. Inter-beach thermal variation was large and was related to the beach albedo with the darkest beach (albedo, 016) being 4.2°C warmer than the lightest coloured beach (albedo, 0.73)

Inter- and intra-beach thermal variation for Green Turtle nests on Ascension Island, South Atlantic

Nest temperatures for green turtles (Chelonia mydas) nesting on Ascension Island, South Atlantic (7°57\u27S 14°22\u27W), were examined. Temperature probes were placed into nests on two beaches, Long Beach (26 nests) and North East Bay (8 nests). Within these beaches there was relatively little thermal variation (SD of nest temperature was 0.32°C for Long Beach and 0.30°C for North East Bay). To examine inter-beach thermal variation temperature probes were buried at 55 cm on 12 beaches. Inter-beach thermal variation was large and was related to the beach albedo with the darkest beach (albedo, 016) being 4.2°C warmer than the lightest coloured beach (albedo, 0.73)

Chapter 15: Vulnerability of marine reptiles in the Great Barrier Reef to climate change

Marine reptiles are an important and well-documented component of the Great Barrier Reef (GBR), comprising a single species of crocodile (Crocodylidae), six species of marine turtles (five Chelonidae and one Dermochelyidae), at least 16 species of sea snakes (Hydrophiidae), one species of file snake (Acrochordidae) and one species of mangrove snake (Colubridae). Together these marine reptile species inhabit or traverse through each of the 70 bioregions identified by the Great Barrier Reef Marine Park Authority Representative Areas Program . These marine reptile species, with the exception of some of the snakes, have distributions that span large areas of the GBR. Crocodiles, marine turtles, file snakes, mangrove snakes and sea snakes all have life history traits, behaviour and physiology that are strongly influenced by temperature. All are ectothermic except for the leatherback turtle and thus their body temperatures fluctuate with environmental temperature. For egg laying species (crocodiles and turtles), the temperature of the nest determines incubation period, hatching success and hatching sex ratio. Thus as a group they are potentially vulnerable to climate change.This is Chapter 15 of Climate change and the Great Barrier Reef: a vulnerability assessment. The entire book can be found at http://hdl.handle.net/11017/13

The impact of interdepartmental psychological safety on interdepartmental conflict management styles

Conflict is an inevitable part of life, and organizations spend a sizable amount of time addressing it. Literature has shown a connection between conflict management styles and psychological safety, but little research has been afforded to these interactions applied across departments. Data were collected from various companies across the United States using an anonymous survey to quantify respondents’ perceived level of general psychological safety, interdepartmental psychological safety, and preferred styles of conflict management. The results of this study indicated that a significant difference between interdepartmental and general psychological safety exists and is positively correlated with each other. Furthermore, certain styles of conflict management showed correlations to the raising and lowering of interdepartmental psychological safety. The results of this study will be helpful to managers and employees by illuminating how the interdepartmental psychological safety level of a company influences an individual’s propensity toward certain conflict management styles when addressing interdepartmental conflict

The environmental contaminant DDE fails to influence the outcome of sexual differentiation in the marine turtle Chelonia mydas.

In many turtles, the temperature experienced during the middle of egg incubation determines the sex of the offspring. The implication of steroid sex hormones as the proximate trigger for sex determination opens the possibility that endocrine-disrupting contaminants may also influence the outcome of sexual differentiation. In this study we investigate the potential effects of DDE (a common DDT metabolite) on sexual differentiation of Chelonia mydas (green sea turtle). Four clutches of eggs collected from Heron Island, Queensland, Australia, were treated with DDE at the beginning of the thermosensitive period for sexual determination. An incubation temperature of 28 degrees C or less produces male hatchlings in this species, whereas 30 degrees C or more produces female hatchlings. Dosed eggs were consequently incubated at two temperatures (27.6 degrees C and 30.4 degrees C) on the upper and lower boundaries of the sex determination threshold for this species. DDE, ranging from 3.3 to 66.5 microg, was dissolved in 5, 10, and 25 microl ethanol and applied to eggshells above the embryo. Less than 2.5 ng/g DDE was present in eggs prior to dosing. Approximately 34% of the applied DDE was absorbed in the eggs, but only approximately 8% of applied DDE was found in embryos. Thus, treated eggs, corrected for background DDE, had up to 543 ng/g DDE. The sex ratio at these doses did not differ from what would be expected on consideration of temperature alone. Incubation time, hatching success, incidence of body deformities, hatching size, and weight were also within the limits of healthy developed hatchlings. This indicates that the eggs of C. mydas in the wild with concentrations of DDE less than 543 ng/g should produce hatchlings with relatively high hatching success, survival rate, and normally differentiated gonads

An incubation study to assess the effect of waste sludge additions on some chemical characteristics of mine spoils : a thesis presented in partial fulfilment of the requirements for the degree of Master of Horticulture in Soil Science at Massey University

In 1985 a study undertaken by the New Zealand Soil Bureau identified a major shortfall in topsoils for mining rehabilitation works and the use of surrogate materials to overcome this shortfall was postulated (Wills, 1992). The Resource Management Act 1991 places constraints on the disposal of wastes and may act as a catalyst for research into the beneficial utilisation of once waste products for land rehabilitation. The most common problem reclaiming of derelict and degraded land is a shortage of organic matter (Pulford, 1991) in the growing medium. The overall objective of the research reported in this study was to investigate chemical interactions between various mine spoils and sludge materials as organic amendments and to determine the level of sludge application (based on organic matter content) that maximised the chemical benefit to the mine spoils. A controlled incubation study was used to achieve the objectives of the study. Six mine spoils from two sources (a gold mine and a coal mine) and three sludge amendments from two sources (municipal sewage sludge and paper sludge) were used. The sludge amendments were applied to the mine spoils to supply three different rates of organic matter (2, 5 and 10% in the amended spoils) and incubated for 38 weeks. The incubations were sampled every four weeks until week 20 and finally at week 38 for chemical analysis. Results of the study revealed that organic matter, total and mineral N, total and Olsen P levels of the amended spoils could be predicted directly from the characteristics of the sludge and spoil constituents but pH, EC, CEC could not. The benefit of sludge addition on many of the chemical characteristics of the mined spoil increased with increasing level of sludge addition. Manukau sewage sludge was the most beneficial sludge to apply with respect to P fertilisation. North Shore sewage sludge presented the greatest benefit for mine spoil rehabilitation with respect to N and it provided less risk of heavy metal contamination than Manukau sewage sludge. Paper sludge presented the most benefit with respect to pH and organic matter and the least risk of heavy metal contamination; however, nutritionally it was inferior to the sewage sludges

Regional HACCP and training requirements to the year 2000

Basic HACCP requirements for the region and the role of the Project and the ASEAN Network are outlined. Training materials developed by the Project in prerequisite requirements and curriculums developed for HACCP training packages intended for Managers, non-QC Supervisors, QC-Supervisors/Managers and Line Workers are detailed