By-catch from the central Queensland prawn fisheries: Part 2. Spatial and temporal changes in by-catch composition and community assemblages

[Extract from 1989 report] A study of trawl fisheries between 18°S and 19°S has shown that three fisheries for penaeid prawns, separable on the basis of species composition and geographic distribution, can be described. More than 300 trawlers operate in these fisheries, which have generated landings in excess of 2000 tonnes of prawns per year in the past two years. The fisheries also take a considerable quantity of by-catch, little of which is of commercial value. In a two year study of by-catch fauna, 477 taxa were identified. The trawl by-catch was dominated by Crustacea and Osteichthyes (bony fish) in terms of numbers and weight taken. The Osteichthyes were the most diverse group, with more than 50% of species coming from this Class. The by-catch was dynamic in nature, with relatively few species being present throughout the year, and dominant species changing over time. There were, however, characteristic faunal assemblages which appeared to be associated with coastal, near-reef and inshore waters. The coastal fauna was markedly different to the near-reef and inshore faunas, and the transition between the two occurred over a distance of less than 5 km. There was no such clear boundary between the near-reef and inshore faunas, the fauna of some sites grouping with near-reef fauna on some sampling occasions and with inshore fauna on others. Preliminary comparisons of the faunas from trawl grounds and the reef environment showed marked differences between them. Few species were common to the reef environment and to trawl grounds, and families which were dominant on trawl grounds were relatively less abundant in near-reef environments

The Revised Leaving Certificate History Syllabus,2004: Teachers’ Perceptions and Practices

In September, 2004, a revised syllabus in Leaving Certificate History was introduced into schools in the Republic of Ireland, replacing a syllabus that had been in place since 1969. Reflecting many decades of change in history teaching internationally, the revised syllabus places greater emphasis on history as activity and seeks to widen the breadth of coverage beyond the predominantly political focus that has been evident heretofore. Its underlying principle and the changes in practice it seeks to encourage present an agenda for significant educational change. As teachers attempt, for the first time, to meet the challenges of implementation, this dissertation seeks to shine a light on their perceptions and their practices

The Revised Leaving Certificate History Syllabus,2004: Teachers’ Perceptions and Practices

In September, 2004, a revised syllabus in Leaving Certificate History was introduced into schools in the Republic of Ireland, replacing a syllabus that had been in place since 1969. Reflecting many decades of change in history teaching internationally, the revised syllabus places greater emphasis on history as activity and seeks to widen the breadth of coverage beyond the predominantly political focus that has been evident heretofore. Its underlying principle and the changes in practice it seeks to encourage present an agenda for significant educational change. As teachers attempt, for the first time, to meet the challenges of implementation, this dissertation seeks to shine a light on their perceptions and their practices

Raised Marine Features, Radiocarbon Dates, and Sea Level Changes, Eastern Melville Peninsula, Arctic Canada

Radiocarbon dates from eastern Melville Peninsula indicate that deglaciation of western Foxe Basin occurred about 6900 years ago, although late ice persisted in an area northwest of Hall Lake and on the central plateau. Relative sea level was as high as 144 m above present at that time. Two new well-controlled sea level curves depict emergence as an exponential decay function. Marine limit elevations and nested curves indicate a major ice-loading centre in south-central Foxe Basin. These data and archaeological dates suggest a secondary recent rebound centre in the northern part of the basin. Flights of raised beaches, prevalent in the area, are composed of angular limestone fragments and suggest that frost-riving occurs in shallow foreshore environments. The prominent wash line near the marine limit suggests that Foxe Basin had less sea ice cover prior to 6000 years ago but that coastal processes have been similar to present since that time.Key words: Arctic, coasts, archaeology, radiocarbon dating, glacial history, emergence, sea level, geomorphologyMots clés: l’Arctique, côtes, archéologie, datation au carbone radioactif, histoire glaciaire, niveau marin, geomorphologi