Masses, luminosities and dynamics of galactic molecular clouds

Star formation in galaxies takes place in molecular clouds and the Milky Way is the only galaxy in which it is possible to resolve and study the physical properties and star formation activity of individual clouds. The masses, luminosities, dynamics, and distribution of molecular clouds, primarily giant molecular clouds in the Milky Way are described and analyzed. The observational data sets are the Massachusetts-Stony Brook CO Galactic Plane Survey and the IRAS far IR images. The molecular mass and infrared luminosities of glactic clouds are then compared with the molecular mass and infrared luminosities of external galaxies

Indigenous Resiliency Project Participatory Action Research Component: A report on the Research Training and Development Workshop, Townsville, February 2008

The Indigenous Resiliency Project proposes to build capacity in Indigenous communities in Australia, New Zealand and Canada to conduct investigations into the factors that may support Indigenous people in responding toblood borne viral (BBV) and sexually transmitted infections (STI). The goal of this international project is to identify strategies related to resiliency that can be incorporated into public health and clinical practice. The Australian arm of the Indigenous Resiliency Project focuses on young adults (aged 16 to 25 years) in urban settings. It employs a range of research methods to gain an understanding of the factors thatmight be strengthened to better protect young Aboriginal and Torres Strait Islander people against BBV and STI. The project has four components, the third being the Participatory Action Research (PAR) project. The PAR has four aims: 1. Build the capacity of Aboriginal Community Controlled Health Services in Participatory Action Research practice. 2. Identify, assess and enhance selected BBV/STI resilience capability of Aboriginal and Torres Strait Islander populations in the study sites. 3. Inform on opportunities to decrease the risk of BBV/STI transmission in these populations. 4. Provide information for local and area health service planning for Aboriginal and Torres Strait Islander BBV/STI prevention. The PAR project is running in three sites: the Townsville Aboriginal and Islander Health Service (TAIHS), Derbarl Yerrigan Medical Service in Perth (DY), and the Aboriginal Medical Service in Redfern (AMS). In each health service, a site research team works together with a research team from the National Centre in HIV Epidemiology and Clinical Research (NCHECR) to develop the project locally. Each site is using the following framework: Phase I: Develop protocols, identifypriority population, and obtain ethics. Phase II: Research training and development workshop. Phase III: Fieldwork – recruitment, observation, and data collection. Phase IV: Focus groups. Phase V: Analysis and dissemination of findings. This report describes the first two phases of the PAR project at the TIAHS.the International Collaborative Indigenous Health Research Program (ICIHRP

Coral reef species assemblages are associated with ambient soundscapes

Author Posting. © The Author(s), 2015. This is the author's version of the work. It is posted here by permission of Inter-Research for personal use, not for redistribution. The definitive version was published in Marine Ecology Progress Series 533 (2015): 93-107, doi:10.3354/meps11382.Coral reefs provide a wide array of ecosystem services and harbor some of the highest levels of biodiversity on the planet, but many reefs are in decline worldwide. Tracking changes is necessary for effective resource management. Biological sounds have been suggested as a means to quantify ecosystem health and biodiversity, but this requires an understanding of natural bioacoustic variability and relationships to the taxa present. This investigation sought to characterize spatial and temporal variation in biological sound production within and among reefs that varied in their benthic and fish diversity. Multiple acoustic recorders were deployed for intensive 24-hour periods and longer term (~4-month) duty-cycled deployments on three reefs that varied in coral cover and fish density. Short-term results suggest that while there were statistically significant acoustic differences among recorders on a given reef, these differences were relatively small, indicating that a single sensor may be suitable for acoustic characterization of reefs. Analyses of sounds recorded over ~4 months indicated that the strength of diel trends in a low frequency fish band (100-1000 Hz) was correlated with coral cover and fish density but the strength of high-frequency snapping-shrimp (2-20 kHz) trends was not, suggesting that low-frequency recordings may be better indicators of the species assemblages present. Power spectra varied within reefs over the deployment periods, underscoring the need for long-duration recordings to characterize these trends. These findings suggest that, in spite of considerable spatial and temporal variability within reef soundscapes, diel trends in low-frequency sound production correlate with reef species assemblages.This research was funded by the Mitsubishi Corporation Foundation for the Americas and WHOI’s Access to the Sea program

Young Indigenous Australians’ sexually transmitted infection prevention practices: A Community-based Participatory Research project

Funded by the International Collaborative Indigenous Health Research Partnership (ID: 361621), a trilateral partnership between the National Health and Medical Research Council of Australia, the Canadian Institutes of Health Research, and the Health Research Council of New ZealandNational surveillance data indicate marked differences between Indigenous and other Australians in the prevalence of many sexually transmitted infections (STIs). Young Indigenous people bear a particularly high burden of these infections. A collaboration of university researchers, Indigenous health workers and young Indigenous people conducted 45 field interviews to examine how young Indigenous Australians keep themselves healthy and protected against STIs. Our findings emphasise the complexity of health behaviours, where individuals are rarely always ‘risky’ or always ‘safe’, as well as subtle gender differences in health practices. Preventive strategies employed by the young people were contingent on beliefs and knowledge about sexual partners, the type of relationship, the context of the sexual encounter, and access to condoms. Tangible strengths identified by our study should be celebrated and bolstered to enhance young Indigenous people’s ability to protect themselves against adverse health outcomes and enhance their resilience against STIs. Focusing on strengths helps to counter the deficit model of health commonly deployed in Indigenous health research and draws attention to health issues facing young Indigenous people and their communities, without reinforcing negative stereotypes or focusing solely on individual risk behaviour. We provide concrete recommendations for health promotion and education. Keywords Sexual health; STI prevention; young people; Indigenous people; AustraliaInternational Collaborative Indigenous Health Research Partnership (ID: 361621

Sexual health through the eyes of Indigenous youth: Community-based participatory research with young Indigenous people in Townsville

The project had the following aims: 1. Build the capacity of Aboriginal Community Controlled Health Services in research practice; 2. Identify, assess and enhance the blood borne viral and sexually transmitted infection (BBV/STI) resilience capability of Aboriginal and Torres Strait Islander people; 3. Inform on opportunities to decrease the risk of BBV /STI transmission in site communities; 4. Provide information for local and area health service planning for Aboriginal and Torres Strait Islander BBV/STI. 1.2 Methods A Community-Based Participatory Research framework was used to develop a qualitative study of young people’s perspectives on blood borne and sexually transmitted infections...The Indigenous Resiliency Project is funded by the International Collaboration in Indigenous Health Research Program, a trilateral partnership between the National Health and Medical Research Council of Australia, the Canadian Institutes of Health Research, and the Health Research Council of New Zealand

Enhancing Aboriginal and Torres Strait Islander young people’s resilience to blood borne and sexually transmitted infections: Findings from a community-based participatory research project

Issue addressed: Health services are fundamental to reducing the burden of blood-borne and sexually transmitted infections (BBV/STI) in Indigenous communities. However, we know very little about young Indigenous people’s use of mainstream and community-controlled health services for the prevention and treatment of these infections, or how health services can best support young people’s efforts to prevent infection. Methods: University-researchers, a site coordinator and peer researchers developed a project and conducted interviews with 45 Aboriginal and Torres Strait Islander people aged 17 to 26 years. Thematic analysis of interviews notes identified key themes around health service use and experiences of Aboriginal Community-Controlled Health Services (ACCHS). Results: Most participants had accessed health services for the prevention or treatment of BBV/STI, with positive experiences characterised by the provision of information and feeling cared for. Participants described the comfort and understanding they experienced at ACCHS; personal relationships and having an Indigenous care provider present were important factors in the overwhelmingly positive accounts. Young people reported strategies for overcoming challenges to prevention and accessing treatment services, including being proactive by carrying condoms, persisting with behavioural intentions despite feeling shame. . Conclusion: Our findings reinforce the important role both mainstream and community-controlled health services have in the prevention and treatment of BBV/STI blood borne and sexually transmitted infections in young Indigenous people. We highlight opportunities to build on young people’s strengths, such as their valuing of their health, their persistence, and their offers to support peers, to better prevent transmission of infections and enhance access to treatment.the International Collaboration in Indigenous Health Research Program, a trilateral partnership between the National Health and Medical Research Council of Australia, the Canadian Institutes of Health Research, and the Health Research Council of New Zealan

Young Indigenous Australians’ sexually transmitted infection prevention practices: A Community-based Participatory Research project

National surveillance data indicate marked differences between Indigenous and other Australians in the prevalence of many sexually transmitted infections (STIs). Young Indigenous people bear a particularly high burden of these infections. A collaboration of university researchers, Indigenous health workers and young Indigenous people conducted 45 field interviews to examine how young Indigenous Australians keep themselves healthy and protected against STIs. Our findings emphasise the complexity of health behaviours, where individuals are rarely always ‘risky’ or always ‘safe’, as well as subtle gender differences in health practices. Preventive strategies employed by the young people were contingent on beliefs and knowledge about sexual partners, the type of relationship, the context of the sexual encounter, and access to condoms. Tangible strengths identified by our study should be celebrated and bolstered to enhance young Indigenous people’s ability to protect themselves against adverse health outcomes and enhance their resilience against STIs. Focusing on strengths helps to counter the deficit model of health commonly deployed in Indigenous health research and draws attention to health issues facing young Indigenous people and their communities, without reinforcing negative stereotypes or focusing solely on individual risk behaviour. We provide concrete recommendations for health promotion and education. Keywords Sexual health; STI prevention; young people; Indigenous people; AustraliaInternational Collaborative Indigenous Health Research Partnership (ID: 361621

Learning from the past: young Indigenous people’s accounts of blood-borne viral and sexually transmitted infections as resilience narratives

The Indigenous Resilience Project is an Australian community-based participatory research project using qualitative methods to explore young Aboriginal and Torres Strait Islander people's views of blood-borne viral and sexually transmitted infections (BBV/STI) affecting their communities. In this paper we present an analysis of narratives from young people who had a previous BBV/STI diagnosis to explore how they actively negotiate the experience of BBV/STI infection to construct a classic resilience narrative. We examine two overarching themes: first, the context of infection and diagnosis, including ignorance of STI/BBV prior to infection/diagnosis and, second, turning points and transformations in the form of insights, behaviours, roles and agency. Responding to critical writing on resilience theory, we argue that providing situated accounts of adversity from the perspectives of young Indigenous people prioritises their subjective understandings and challenges normative definitions of resilience.Keywords resilience, sexual health, young people, Indigenous people, Australiafunded by the International Collaborative Indigenous Health Research Partnership (ID: 361621), a trilateral partnership between the National Health and Medical Research Council of Australia, the Canadian Institutes of Health Research, and the Health Research Council of New Zealan

The Phytogeography and Ecology of the Coastal Atacama and Peruvian Deserts

The Atacama and Peruvian Deserts form a continuous belt for more than 3500 km along the western escarpment of the Andes from northern Peru to northernmost Chile. These arid environments are due to a climatic regime dominated by the cool, north-flowing Humboldt (Peruvian) Current. Atmospheric conditions influenced by a stable, subtropical anticyclone result in a mild, uniform coastal climate nearly devoid of rain, but with the regular formation of thick stratus clouds below I 000 m during the winter months. Where coastal topography is low and flat, the clouds dissipate inward over broad areas with little biological impact. However, where isolated mountains or steep coastal slopes intercept the clouds, a fog-zone develops. This moisture allows the development of plant communities termed lomas formations. These floristic assemblages function as islands separated by hyperarid habitat devoid of plant life. Since growth is dependent upon available moisture, an understanding of climatic patterns is essential in efforts to interpret present-day plant distributions. Topography and substrate combine to influence patterns of moisture availability. The ecological requirements and tolerances of individual species ultimately determines community composition. Species endemism exceeds 40% and suggests that the lomas formations have evolved in isolation from their nearest geographic neighbors in the Andes. While the arid environment is continuous, there appears to be a significant barrier to dispersal between 18° and 22°S latitude in extreme northern Chile. Less than 7% of a total flora, estimated at nearly 1000 species, occur on both sides ofthis region. Viable hypotheses concerning the age and origins of these desert floras will require continued study of the ecology and biogeography of their component species

The interaction between wheat roots and soil pores in structured field soil

Wheat (Triticum aestivum L.) root growth in the subsoil is usually constrained by soil strength, although roots can use macropores to elongate to deeper layers. The quantitative relationship between the elongation of wheat roots and the soil pore system, however, is still to be determined. We studied the depth distribution of roots of six wheat varieties and explored their relationship with soil macroporosity from samples with the field structure preserved. Undisturbed soil cores (to a depth of 100 cm) were collected from the field and then non-destructively imaged using X-ray computed tomography (at a spatial resolution of 90 µm) to quantify soil macropore structure and root number density (the number of roots cm–2 within a horizontal cross-section of a soil core). Soil macroporosity changed significantly with depth but not between the different wheat lines. There was no significant difference in root number density between wheat varieties. In the subsoil, wheat roots used macropores, especially biopores (i.e. former root or earthworm channels) to grow into deeper layers. Soil macroporosity explained 59% of the variance in root number density. Our data suggested that the development of the wheat root system in the field was more affected by the soil macropore system than by genotype. On this basis, management practices which enhance the porosity of the subsoil may therefore be an effective strategy to improve deep rooting of wheat