Gene flow in east antarctic echinoderms and resilience to climate change

The spatial scales of population genetic structure in three species of Antarctic echinoderm, Sterechinus neumayeri, Abatus nimrodi and Abatus ingens was quantified using mitochondrial sequences and a novel set of microsatellite markers. Reduced fertilisation success in S. neumayeri resulting from increasing temperature and decreasing salinity was also identified.

East Rennell World Heritage Site : misunderstandings, inconsistencies and opportunities in the implementation of the World Heritage Convention in the Pacific Islands

Continuing traditional land tenure and resource use pattern the landscapes and seascapes of the Pacific Islands, and the rights of customary land owners are enshrined in the constitutions of many Pacific Island states. The implications of this for heritage conservation programs implemented by national governments under international Conventions and Agreements are explored through a case study of East Rennell World Heritage site, the first site to be inscribed based on natural criteria under customary ownership and management. Dissatisfaction with World Heritage listing expressed by the community of East Rennell is argued to reflect inconsistencies in the requirements for inscription of the property and a tension between the conservation and ‘beauty pageant’ functions of the World Heritage List.

Creating a space and place for culture bearers within tertiary institutions: Experiencing East African dance songs in South Africa

This paper highlights the intersections between formal and informal African music and dance within a tertiary setting. Reflective practice, journaling and survey data within case study methodology provide a snapshot of the teaching and learning that took place at North West University in South Africa in October 2012. I argue for the inclusion of informal pedagogy of indigenous musics within the formal context of university courses. The experience provided a pathway to connect local community and university to celebrate the rich diversity of African music and culture. The teaching and learning experiences served as onsite professional development for tertiary students, music staff and myself.

Early Triassic (early Olenekian) life in the interior of East Gondwana: Mixed marine-terrestrial biota from the Kockatea Shale, Western Australia

A new terrestrial-marine assemblage from the lower beds of a thin outcrop section of the Kockatea Shale in the northern Perth Basin, Western Australia, contains a range of fossil groups, most of which are rare or poorly known from the Lower Triassic of the region. To date, the collection includes spinose acritarchs, organic-cemented agglutinated foraminifera, lingulids, minute bivalves and gastropods, ammonoids, spinicaudatans, insects, austriocaridid crustaceans, actinopterygians, a temnospondyl-like mandible, plant remains, and spores and pollen. Of these groups, the insects, crustaceans and macroplant remains are recorded for the first time from this unit. Palynomorphs permit correlation to nearby sections where conodonts indicate an early Olenekian (Smithian) age. The locality likely represents the margin of an Early Triassic shallow interior sea with variable estuarine-like water conditions, at the southwestern end of an elongate embayment within the East Gondwana interior rift-sag system preserved along the Western Australian margin. Monospecific spinose acritarch assemblages intertwined with amorphous organic matter may represent phytoplankton blooms that accumulated as mats, and suggest potentially eutrophic surface waters. The assemblage represents a mixure of marine and terrestrial taxa, suggesting variations in water conditions or that fresh/brackish-water and terrestrial organisms were transported from adjacent biotopes. Some of the lower dark shaly beds are dominated by spinicaudatans, likely indicating periods when the depositional water body was ephemeral, isolated, or subjected to other difficult environmental conditions. The biota of the Kockatea Shale is insufficiently known to estimate biotic diversity and relationships of individual taxa to their Permian progenitors and Triassic successors, but provides a glimpse into a coastal-zone from the interior of eastern Gondwana. Specialist collecting is needed to clarify the taxonomy of many groups, and comparisons to other Lower Triassic sites are required to provide insights into the pattern of biotic decline and recovery at the end-Permian crisis.

Direct evidence of histopathological impacts of wastewater discharge on resident Antarctic fish (Trematomus bernacchii) at Davis Station, East Antarctica.

During the 2009/2010 summer, a comprehensive environmental impact assessment (EIA) of the wastewater discharge at Davis Station, East Antarctica was completed. As part of this, histological alteration of gill and liver tissue in Antarctic Rock-cod (Trematomus bernacchii) from four sites along a spatial gradient from the wastewater outfall were assessed. All fish within 800 m of the outfall exhibited significant histological changes in both tissues. Common pathologies observed in fish closest to the outfall include proliferation of epithelial cells with associated secondary lamellar fusion in the gills and multifocal granulomata with inflammation and necrosis as well as cysts in the liver. Fish from sites >800 m from the outfall also exhibited alterations but to a lesser degree, with prevalence and severity decreasing with increasing distance from the outfall. This study highlights the value of histopathological investigations as part of EIAs and provides the first evidence of sub-lethal alteration associated with wastewater discharge in East Antarctica.

Physical environments, policies and practices for physical activity and screen-based sedentary behaviour among preschoolers within child care centres in Melbourne, Australia and Kingston, Canada

Characteristics of preschool and child care centres have previously been shown to be associated with children's health behaviours such as physical activity and screen-based sedentary behaviour. This paper investigates differences in physical environments, policies and practices between child care centres in Melbourne, Australia and Kingston, Canada which may be associated with such behaviours.