Water quality of the Great Barrier Reef : distributions, effects on reef biota and trigger values for the protection of ecosystem health

This Report to the GBMPA provides technical background information and statistical data analysis for defining improved water quality guideline trigger values for the GBR Water Quality Guidelines

Classifying the biodiversity of the Great Barrier Reef World Heritage Area for the classification phase of the representative areas program

This technical report outlines the methods that the Great Barrier Reef Marine Park Authority used to classify the biodiversity of the marine environs of the Great Barrier Reef World Heritage Area for the Representative Areas Program. Classification was the first step in the multiphase Representative Areas Program that eventuated in a new network of no-take areas, free from extractive activities, in the Great Barrier Reef Marine Park

Evaluation of edna: arts and dance for older people

Purpose To evaluate the impact on health and wellbeing of participation in dance and arts activities by older people living in the community. Design A small-scale, mixed methods research design comprising pretest-posttest evaluation of a three month dance and arts programme. Two groups of older people underwent physical measures and completed a self-report quality of life questionnaire. Written comments and interview data were also gathered. Findings Physical tests (n=14) demonstrated improvements in posture, shoulder mobility and balance in both groups following the intervention, with some measures reaching statistical significance. Quality of life evaluations (n=21) also showed improvement, with the mental health subscale reaching statistical significance. Qualitative data showed that participants enjoyed the programme and felt physical, psychological and social benefits. Research limitations The research involved only a small sample of volunteers and a limited programme length which limits its generalizability. The absence of a control group means that causality cannot be inferred. Future research should extend recruitment to a wider geographical area and a longer intervention which includes a control group. Practical and social implications Future arts interventions for older people should include consultation prior to, and throughout the project. Commissioners should consider supporting arts for health projects, building in additional funding for evaluative work. Originality This study has added to the evidence base through combining art forms within a mixed methods framework, illustrating the interplay between the art forms, the outcomes and the potential role of social context. Keywords: Dance, arts, older people, health, wellbeing. Paper type: Research paper

Edna: energise dance nourish art

The vital need to maximise the health and wellbeing potential of the growing numbers within the older population is acknowledged at government level and among health professionals. A certain amount of research evidence exists to suggest that both visual arts and creative dance confer benefits to older people. In April 2013, North Kent Local Authorities Arts Partnership (NKLAAP) funded and produced edna – energise dance nourish art; a dance, arts, health and wellbeing project. The aim of the pilot project was to evaluate the benefits to health and wellbeing of dance and arts activities that were stimulating and developed for and with older people in Medway and Gravesend. Medway Older People’s Partnership (MOPP) and two professional artists were commissioned to support and deliver edna. Two groups of people over 50 years were formed in outreach community settings in the NKLAAP region (Local and Unitary Authority areas of Gravesham and Medway). NKLAAP also jointly commissioned The Sidney De Haan Research Centre for Arts and Health (SDH) and the Dance Science department of Trinity Laban Conservatoire of Music and Dance (TL) to undertake an empirical evaluation of edna. The research team included a Senior Researcher from SDH and a Graduate Intern from TL’s Dance Science Department. Specific physiological and psychosocial areas of health and wellbeing were chosen for assessment. The overall design involved a pretest-posttest descriptive study, incorporating validated research measures plus semi-structured interviews. Physiological assessments included postural assessment, range of shoulder mobility and balance. Psychosocial measures were collected using the World Health Organisation’s WHOQOL BREF, a quality of life (QoL) questionnaire1. A specially designed questionnaire was also used to capture general attitudes towards the project as a whole. Physiological research findings demonstrated statistically significant improvement of the left shoulder mobility within both groups and a trend towards improvement in the right shoulder mobility. Both groups saw a significant improvement in posture with the Medway group significantly improving in upper body and the Gravesend group in the lower body. For both groups there was a significant improvement in balance scores. Overall mean post-intervention QoL measures showed higher scores than at baseline, with a significant post-intervention difference in the psychological domain when compared to baseline. For participants in Medway the greatest change was in psychological and social domains. For Gravesend participants the greatest change was in the physical and psychological domains. Findings from this small scale pilot project suggest that dance and arts programmes have the potential to improve both physiological and psychosocial wellbeing of older people. It is recommended that commissioning agencies should consider including funding for such interventions in future plans and also support continuing evaluation to increase generalizability and to look at other variables in the physiological and psychological domains

Strength training perceptions amongst vocational circus and dance students

The aim of this study was to analyse perceptions of strength training in vocational circus and dance students. It was hypothesised that due to the higher relative strength demands and associated risks of working at height in some aerial and acrobatic disciplines that circus students would be more open to strength training than dancers. Eighty students completed the Training Information Survey (TIS) (Mean age = 20.74±2.71); 39 circus students and 41 dance students. Ninety-seven percent of circus students and 69% of dance participants reported that strength training was a required part of their training with students participating in strength training 4.24±0.98 days per week and 3.05±1.42 days per week respectively. Perceptions of strength training amongst vocational circus and dance students appear to be favourable, with both sets of students strongly agreeing with the statements “Strength training is essential to my overall development as a dancer/circus artist” (5.00 (IQR 1.00) and 5.00 (IQR 1.00) respectively). Following Bonferonni correction only one statement returned statistically significant results with dance students agreeing more strongly with the statement “Strength training increases muscle size”, U=473.00, p=0.001. Students also agreed that strength training helped them to feel better mentally and physically, that strength training is beneficial for both men and women and that it should not be designated as specific to either sex. Results support earlier studies that suggest a cultural shift in perceptions of strength training and ideal aesthetic in dance, particularly amongst students and that they are keen to incorporate strength training into their practice. Educational establishments should note students’ interest in participating in strength training, reviewing how to embed effective strength training education, more coaching and time allowance for these activities within their timetable. Further research with a greater sample size is recommended to further substantiate these indications of a shift in perceptions

Regional versus local drivers of water quality in the Windermere catchment, Lake District, United Kingdom: the dominant influence of wastewater pollution over the past 200 years

Freshwater ecosystems are threatened by multiple anthropogenic stressors acting over different spatial and temporal scales, resulting in toxic algal blooms, reduced water quality and hypoxia. However, while catchment characteristics act as a ‘filter’ modifying lake response to disturbance, little is known of the relative importance of different drivers and possible differentiation in the response of upland remote lakes in comparison to lowland, impacted lakes. Moreover, many studies have focussed on single lakes rather than looking at responses across a set of individual, yet connected lake basins. Here we used sedimentary algal pigments as an index of changes in primary producer assemblages over the last~200 years in a northern temperate watershed consisting of 11 upland and lowland lakes within the Lake District, United Kingdom, to test our hypotheses about landscape drivers. Specifically, we expected that the magnitude of change in phototrophic assemblages would be greatest in lowland rather than upland lakes due to more intensive human activities in the watersheds of the former (agriculture, urbanization). Regional parameters, such as climate dynamics, would be the predominant factors regulating lake primary producers in remote upland lakes and thus, synchronize the dynamic of primary producer assemblages in these basins. We found broad support for the hypotheses pertaining to lowland sites as wastewater treatment was the main predictor of changes to primary producer assemblages in lowland lakes. In contrast, upland headwaters responded weakly to variation in atmospheric temperature, and dynamics in primary producers across upland lakes were asynchronous. Collectively, these findings show that nutrient inputs from point sources overwhelm climatic controls of algae and nuisance cyanobacteria, but highlights that large-scale stressors do not always initiate coherent regional lake response. Furthermore, a lake’s position in its landscape, its connectivity and proximity to point nutrients are important determinants of changes in production and composition of phototrophic assemblages

Environmental drivers of freshwater macrophyte diversity and community composition in calcareous warm-water rivers of America and Africa

1. This study assessed the hypothesis that spatial and environmental drivers of river macrophyte diversity and community composition differ in relative importance in calcareous river systems located in warm regions of America versus Africa. 2. We collected aquatic vegetation and spatio-environmental data, during 2006–11, from >200 hardwater rivers, and associated floodplain waterbodies, located up to 30° north or south of the Equator, in México, Trinidad, Brazil, Argentina, U.S.A. (Florida), South Africa, Botswana and Zambia. 3. Species rarefaction procedures were used to assess the impacts of differing sampling effort in the two continents upon estimation of γ-diversity (“species pool”). We then used a cluster analysis approach (two-way indicator species analysis: TWINSPAN) to classify samples into groups based upon species composition. Variation in species richness, community composition and six spatial and environmental variables, among samples making up these groups, were compared using ANOVA and Kruskal–Wallis procedures. Regression trees and redundancy analysis were used to infer the relative importance of spatial and environmental drivers in explaining variation in local species richness and species community composition between the two continents. Sorensen's index (Cs) was calculated to estimate species turnover (β-diversity) between African and American samples. 4. In total, 378 macrophyte taxa were recorded, with no significant difference in mean macrophyte α-diversity between African and American sites, but with evidence for high species turnover between the two continents (Cs = 0.17). Rarefaction analysis confirmed the existence of a larger macrophyte species pool in the hardwater rivers sampled in Africa compared to America. TWINSPAN classification identified seven sample end-groups, only one of which contained a mix of sites from both continents. PERMANOVA and non-metric multidimensional scaling ordination analysis confirmed significant differences in community composition present in these sample-groups. There were substantial differences between the sample-groups for α-diversity, and for spatial and environmental variables. 5. The high species turnover between Africa and America may be accounted for by geographical segregation, along with differences in aquatic habitat characteristics, and varying long-distance dispersal capacities of individual species. The relative importance of spatial and physicochemical drivers (latitude, pH, altitude, alkalinity and electrical conductivity but not flow) differed between the continents in influencing variation in both macrophyte diversity and community composition. Latitude was a significant, although nonlinear and rather complex, spatial driver of macrophyte α-diversity in both American and African hardwater rivers. Water chemistry variables varied in relative importance as drivers of macrophyte α-diversity for African and American sites individually, and for all sites combined, but pH and/or electrical conductivity were more important than alkalinity in each case. In all three cases, altitude was consistently the third most important driver of α-diversity. Spatial and environmental variables played important roles in structuring macrophyte community composition in warm-water calcareous rivers in both America and Africa, with latitude being the strongest individual driver. Thus, this spatial variable, which is a surrogate for numerous enviro-climatic variables, appears to be of importance in determining macrophyte distributions at large spatial scales, for the ecosystem type examined here

Spatial scaling of forest soil microbial communities across a temperature gradient.

Temperature is an important correlate of global patterns of biodiversity, yet the mechanisms driving these relationships are not well understood. Taxa-area relationships (TARs) have been intensively examined, but the effects of temperature on TARs, particularly for microbial communities, are largely undocumented. Here we present a continental-scale description of temperature-dependent nested TARs of microbial communities (bacteria and archaea) from soils of six forest sites spanning a temperature gradient from subalpine Colorado to tropical Panama. Our results revealed that spatial scaling rates (z-values) of microbial communities varied with both taxonomic resolutions and phylogenetic groups. Additionally, microbial TAR z-values increased with temperature (r = 0.739, P < 0.05), but were not correlated with other environmental variables tested (P > 0.05), indicating that microbial spatial scaling rate is temperature-dependent. Understanding how temperature affects the spatial scaling of microbial biodiversity is of fundamental importance for preservation of soil biodiversity and management of ecosystems

Historical marine population estimates: triggers or targets for conservation? The dugong case study

Recent studies have estimated the historical abundance of large marine vertebrates to determine potential targets for conservation. We evaluated this approach using 1990s aerial survey estimates of dugong abundance and an estimate of the decline in dugong numbers since the 1960s based on changes in the catch per unit effort of dugong bycatch in a government shark control program on the east coast of Queensland, Australia. This analysis indicated that the catch rate of dugongs caught in shark nets, at six locations between latitudes 16.5° S and 28° S, declined at an average of 8.7% per year between 1962 and 1999. This represents a decline to 3.1% of initial catch rates over the sampling period. If the changes in the populations sampled by the shark nets and aerial surveys were equivalent, this result suggests that the region supported 72 000 dugongs in the early 1960s compared with an estimated 4220 dugongs in the mid-1990s. The seagrass habitat in the region is currently insufficient to support 72 000 dugongs, suggesting that our hindcast estimate may be an unrealistic target for recovery. Nonetheless, the evidence of serious dugong decline from the shark-net data and other sources has triggered significant conservation initiatives. This case study indicates that comparisons between historical and contemporary estimates of the abundance of large marine vertebrates can be powerful qualitative triggers for conservation action, but that quantitative targets for recovery require systematic testing of the assumptions underlying hindcast estimates, scientific evaluation of the current carrying capacity of the ecosystem for the target species, and consultation with a broad range of stakeholders. For some species, it may be more productive to set anthropogenic mortality targets that are designed to enable the population to recover to its optimum sustainable population than to set recovery targets per se