Статті в журналах: "Aquatic centres"

1

Rajagopalan, Priyadarsini. "Energy performance of aquatic facilities in Victoria, Australia." Facilities 32, no. 9/10 (July 1, 2014): 565–80. http://dx.doi.org/10.1108/f-02-2013-0015.

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Purpose – This paper investigates the energy performance of aquatic centres in Victoria. Design/methodology/approach – Physical and occupancy characteristics and energy consumption from various centres were analysed to understand the interrelationship between numerous factors that contribute to the energy consumption of these facilities. Findings – The energy usage intensity of the facilities ranged from 632 to 2,247 kWh/m2 or 8 to 17 kWh/visit. Primary and secondary indicators were examined to find the key performance indicators. Research limitations/implications – This study sheds some light into the overall energy performance of aquatic centres in the temperate climate of Australia. More samples need to be collected to perform rigorous statistical analysis leading to a reliable benchmark model. System-wise investigation of energy consumption is required to determine where the energy is being used and the saving potentials of each system. Practical implications – This study has arisen from the need of managers of large aquatic and recreation facilities to benchmark the energy consumption of their own facilities. This study will fill the gap that currently exists in the area of energy rating systems for aquatic centres. Social implications – The results of this study showed that aquatic centres consume around seven times more energy than a commercial office building. Thus, if the energy consumption of aquatic centres could be reduced by as little as only 10 per cent, at least 3.5 million tonnes of carbon dioxide emission can be reduced. Originality/value – Environmental design standards for aquatic centres have generally been overlooked due to the complex nature of these buildings. As a result, this sector suffers from a general lack of both qualitative and quantitative information and benchmarking.

2

Howat, Gary, Gary Crilley, and Duncan Murray. "Using Performance Measures to Assess Performance of Indoor and Outdoor Aquatic Centres." Journal of Management & Organization 11, no. 1 (January 2005): 6–16. http://dx.doi.org/10.1017/s1833367200004375.

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ABSTRACTA recent trend throughout Australia has been to develop multi-purpose indoor public aquatic centres in favour of outdoor pools. Such major policy and planning decisions often rely on consultants' feasibility studies, yet there is limited comprehensive industry-wide data available on which to base such decisions. The industry-wide performance measures discussed in this paper help fill this void by providing objective data to support the contention that multi-purpose indoor aquatic centres tend to outperform centres with solely outdoor pools. The key indicators of performance are based on financial viability and community participation data for a sample of Australian public aquatic centres.

3

Howat, Gary, Gary Crilley, and Duncan Murray. "Using Performance Measures to Assess Performance of Indoor and Outdoor Aquatic Centres." Journal of the Australian and New Zealand Academy of Management 11, no. 1 (January 2005): 6–16. http://dx.doi.org/10.5172/jmo.2005.11.1.6.

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ABSTRACTA recent trend throughout Australia has been to develop multi-purpose indoor public aquatic centres in favour of outdoor pools. Such major policy and planning decisions often rely on consultants' feasibility studies, yet there is limited comprehensive industry-wide data available on which to base such decisions. The industry-wide performance measures discussed in this paper help fill this void by providing objective data to support the contention that multi-purpose indoor aquatic centres tend to outperform centres with solely outdoor pools. The key indicators of performance are based on financial viability and community participation data for a sample of Australian public aquatic centres.

4

Butson, Michael, John Tower, and Eric C. Schwarz. "Lifeguard turnover in aquatic and recreation centres: Perspectives from managers." Australian Journal of Career Development 30, no. 1 (March 24, 2021): 33–42. http://dx.doi.org/10.1177/1038416220983489.

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Employee turnover is the loss of talent in the workforce. High employee turnover is expensive and disruptive. Young employees are more likely to leave one job for a better one and are often less attached to an organisation while they are completing their education. The aquatics industry has been described as being in a crisis, experiencing unprecedented levels of turnover amongst lifeguards. A first important step is to understand the reasons for turnover amongst lifeguards. This study utilised semi-structured interviews with aquatic and recreation centre managers (N = 16; 69% female) to explore their insights about lifeguard turnover. A deductive content analysis determined that lifeguards leave their current position for four main reasons: lifeguarding being a temporary position, a negative working environment, pursuing employment in a higher paying lifeguard position and location. Consequently, centre managers need to consider short and long-term strategies to retain lifeguards.

5

Ellis, Derek. "Identification Centres." Marine Pollution Bulletin 17, no. 11 (November 1986): 479–80. http://dx.doi.org/10.1016/0025-326x(86)90613-2.

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6

Duverge, Jean Jonathan, Priyadarsini Rajagopalan, and Robert Fuller. "Defining aquatic centres for energy and water benchmarking purposes." Sustainable Cities and Society 31 (May 2017): 51–61. http://dx.doi.org/10.1016/j.scs.2017.02.008.

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7

Boelsen-Robinson, Tara, Liliana Orellana, Kathryn Backholer, Ariana Kurzeme, Alethea Jerebine, Beth Gilham, Alexandra Chung, and Anna Peeters. "Change in drink purchases in 16 Australian recreation centres following a sugar-sweetened beverage reduction initiative: an observational study." BMJ Open 10, no. 3 (March 2020): e029492. http://dx.doi.org/10.1136/bmjopen-2019-029492.

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ObjectiveTo assess the impact of a sugar-sweetened beverage (SSB) reduction initiative on customer purchasing patterns, including volume sales of healthy and unhealthy packaged drinks and sales value of all packaged drinks, in a major Australian aquatic and recreation provider, YMCA Victoria.DesignProspectiveSetting16 aquatic and recreation centres in Victoria, Australia.InterventionsThe SSB-reduction initiative aimed to remove all SSBs (excluding sports drinks) and increase healthier drink availability over a 1-year period.Primary and secondary outcome measuresItemised monthly drink sales data were collected for 16 centres, over 4 years (2 years preimplementation, 1 year implementation and 1 year postimplementation). Drinks were classified as ‘green’ (best choice), ‘amber’ (choose carefully) or ‘red’ (limit). Interrupted time series analysis was conducted for each centre to determine the impact on volume sales of ‘red’ and ‘green’ drinks, and overall sales value. A novel meta-analysis approach was conducted to estimate the mean changes across centres.ResultsFollowing implementation, volume sales of ‘red’ drinks reduced by 46.2% across centres (95% CI: −53.2% to −39.2%), ‘green’ drink volume did not change (0.0%, 95% CI: −13.3% to 13.2%) and total drink sales value decreased by 24.3% (95% CI: −32.0% to −16.6%).ConclusionsThe reduction of SSBs in health-promoting settings such as recreation centres is a feasible, effective public health policy that is likely to be transferable to other high-income countries with similarly unhealthy beverage offerings. However, complementary strategies should be considered to encourage customers to switch to healthier alternatives, particularly when translating policies to organisations with less flexible income streams.

8

Duverge, Jean Jonathan, Priyadarsini Rajagopalan, Robert Fuller, and Jin Woo. "Energy and water benchmarks for aquatic centres in Victoria, Australia." Energy and Buildings 177 (October 2018): 246–56. http://dx.doi.org/10.1016/j.enbuild.2018.07.043.

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9

Rajagopalan, Priyadarsini, and Elmira Jamei. "Thermal comfort of multiple user groups in indoor aquatic centres." Energy and Buildings 105 (October 2015): 129–38. http://dx.doi.org/10.1016/j.enbuild.2015.07.037.

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10

Barbier, Antoine, Barbara Evrard, and Nadine Dermit-Richard. "Predictive Modelling of Sports Facility Use: A Model of Aquatic Centre Attendance." Sustainability 15, no. 5 (February 24, 2023): 4142. http://dx.doi.org/10.3390/su15054142.

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The level of attendance appears to be the central indicator for analysing the performance of public sports facilities. However, most of the studies focus on customer satisfaction and loyalty and have been carried out in Australia and the United Kingdom. The aim of this article was, therefore, to identify potential explanatory variables that could explain attendance at leisure sports facilities in Europe based on the literature (a). Then, we aimed to identify the variables that explained attendance based on a study of aquatic centres (b) to propose an exploratory predictive model (c). The sample was composed of data from 28 aquatic facilities over 5 years, and we examined 41 variables from the literature. A predictive model of attendance was created using backward regression. The proposed formula had a predictive power of 79.13% of the observed attendance in our sample of aquatic centres. These results suggest that it is possible to determine attendance at an aquatic facility with only four variables and that the study of leisure facilities in Europe implies adapting the variables to be considered. This is also the first model to investigate leisure sports facilities in Europe.

11

Petrass, Lauren A., Kate Simpson, Jenny Blitvich, Rhiannon Birch, and Bernadette Matthews. "Exploring the impact of a student-centred survival swimming programme for primary school students in Australia: the perceptions of parents, children and teachers." European Physical Education Review 27, no. 3 (February 3, 2021): 684–702. http://dx.doi.org/10.1177/1356336x20985880.

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Teaching basic swimming, water safety and rescue skills is recommended by the World Health Organization for all school-aged children. However, there is a lack of evidence on effective pedagogies to develop swimming competency and the success of swimming lessons as a drowning prevention intervention. This study used a self-report questionnaire and practical testing procedures to examine the effectiveness of a 10-week student-centred aquatic programme designed for children aged 10–12 years. The study also determined whether the non-traditional swimming programme was accepted by swim teachers, school teachers and principals, and parents from a range of schools from different geographical regions in Victoria, Australia. A total of 204 students were enrolled in the programme. The pre-programme results indicated a good level of swimming, water safety and aquatic knowledge, but low swimming ability. Swimming ability significantly improved from pre-programme to post-programme, with no significant post-programme ability differences between male and female children or for participants from different programmes. Qualitative feedback collected through questionnaires, interviews and/or focus groups from students ( n = 73) and parents ( n = 69), school teachers and principals ( n = 14), swim teachers and swim school managers ( n = 21) indicated strong support from principals and swim teachers for the student-centred pedagogy, and all stakeholders valued the focus on survival swimming competencies. This research highlights the importance of including stakeholders when designing and implementing aquatics programmes. The study has resulted in a well-founded, effective programme with tailored resources and instructional materials that are available for swim centres and schools that would enable schools globally to adopt and implement this programme.

12

Howat, Gary, Duncan Murray, and Gary Crilley. "Reducing measurement overload: Rationalizing performance measures for public aquatic centres in Australia." Managing Leisure 10, no. 2 (April 2005): 128–42. http://dx.doi.org/10.1080/13606710500146449.

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13

Duverge, Jean Jonathan, and Priyadarsini Rajagopalan. "Assessment of factors influencing the energy and water performance of aquatic centres." Building Simulation 13, no. 4 (June 13, 2020): 771–86. http://dx.doi.org/10.1007/s12273-020-0644-z.

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14

Amusat, M. A., A. A. Ayeloja, O. T. Dada-Joel, and K. C. Eneh. "Toxicity assessment of African locust bean effluents on agricultural soil and aquatic organism at Jimba- Oja and Temidire locust bean (Parkia biglobosa) processing centers." Ife Journal of Science 22, no. 1 (May 26, 2020): 55–64. http://dx.doi.org/10.4314/ijs.v22i1.6.

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Indiscriminate processing of agricultural produces has led to the alteration of agricultural soil and aquatic habitat, consequently threatening food security, human health and natural population size of aquatic organisms. This study investigated chemical properties of the soil at Jimba- Oja and Temidire locust bean (Parkia biglobosa) processing centres. The static bioassays were also performed on Clarias gariepinus to evaluate the median lethal concentrations of the locust bean effluents within 72 and 96 hours. Physico-chemical parameters of effluents showed that pH was slightly acidic (6.44 to 6.73 respectively). The dissolved oxygen ranged from 6.48 to 6.73 mg/L and phosphate from 67.52 to 82.60 mg/L. The concentration of copper, iron, nickel ranged from 6.77 to 8.84, 32.57 to 47.67 and 0.21 to 1.04 mg/L respectively. These parameters exceeded the Federal Environmental Protection Agency (FEPA) permissible limits. The Effluents from Parkia biglobosa impacted soil with high concentrations of heavy metals ranging from: copper 4.72 to 5.02, cadmium 0.03 to 0.35, iron 51.82 to 76.41 and nickel 0.13 to 0.05 at processing centers compared to the control site. Toxicity assessments indicated that the mortality increased with increase in effluent concentration. LC tests (36 %:72 hours), (20 %: 96 hours), (30.1 %: 50 72 hours) and (20 %: 96 hours) concentrations were carried out for Jimba-oja and Temidire respectively and the sublethal dose of below 7.5 % for both Parkia biglobosa processing centers were obtained. The study concluded that releasing Parkia biglobosa effluent to the environment have negative impacts on agricultural soil and aquatic organisms. There is therefore need for relevant government agencies to control indiscriminate discharge of these effluents into the environment untreated. Keywords: Locust bean effluent, Toxicity, Agric soil, Aquatic Organism

15

Howat, Gary, Gary Crilley, and Richard Mcgrath. "A focused service quality, benefits, overall satisfaction and loyalty model for public aquatic centres." Managing Leisure 13, no. 3-4 (October 2008): 139–61. http://dx.doi.org/10.1080/13606710802200829.

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16

Afthinos, Yanni, Nicholas D. Theodorakis, and Gary Howat. "How do perceptions of other customers affect satisfaction and loyalty in public aquatic centres?" Managing Sport and Leisure 22, no. 6 (November 2, 2017): 428–41. http://dx.doi.org/10.1080/23750472.2018.1513340.

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17

Saleem, Sana, Husnain Haider, Guangji Hu, Kasun Hewage, and Rehan Sadiq. "Performance indicators for aquatic centres in Canada: Identification and selection using fuzzy based methods." Science of The Total Environment 751 (January 2021): 141619. http://dx.doi.org/10.1016/j.scitotenv.2020.141619.

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18

Saleem, Sana, Husnain Haider, Kasun Hewage, and Rehan Sadiq. "Performance benchmarking model for sustainability of aquatic centres in cold regions: Development and implementation." Sustainable Production and Consumption 26 (April 2021): 558–73. http://dx.doi.org/10.1016/j.spc.2020.12.020.

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19

Alidi, Abdulaziz S. "Locating oil spill response centres using mathematical models." Marine Pollution Bulletin 26, no. 4 (April 1993): 216–19. http://dx.doi.org/10.1016/0025-326x(93)90625-t.

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20

Pulsford, A. L., K. P. Ryan, and J. A. Nott. "Metals and melanomacrophages in flounder, Platichthys flesus, spleen and kidney." Journal of the Marine Biological Association of the United Kingdom 72, no. 2 (May 1992): 483–98. http://dx.doi.org/10.1017/s002531540003784x.

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Kidney and spleen tissues from flounder Platichthys flesus (L.) collected from Neal Point in the estuary of the river Tamar were examined by x-ray microanalysis for the presence of heavy metals within the melanomacrophage centres. Ultrastructurally these centres consisted of groups of pigment-containing macrophages in which melanin was the most prominent pigment, but lipofuscin and haemosiderin were also present. Some of the macrophages also contained irregular metal particles and minerals with associated metals. The metals identified within these inclusions were Ti, Cr, Fe, Co, Ni, Cu, Zn, Sr, Ag, Sn, Ba, La, Ce, Nd, W, Au, Pb, Th and U. The results are discussed in relation to the sediment chemistry of the River Tamar, and the possible routes of uptake by the fish.

21

Huse, Oliver, Christina Zorbas, Alethea Jerebine, Ari Kurzeme, Miranda Blake, Megan Ferguson, Claire Palermo, et al. "Pricing Interventions to Promote Healthy Eating: Perceptions of Managers of Victorian Aquatic and Recreation Centres." Obesity Research & Clinical Practice 13, no. 3 (May 2019): 318. http://dx.doi.org/10.1016/j.orcp.2018.11.226.

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22

Saleem, Sana, Roberta Dyck, Guangji Hu, Kasun Hewage, Manuel Rodriguez, and Rehan Sadiq. "Investigating the effects of design and management factors on DBPs levels in indoor aquatic centres." Science of The Total Environment 651 (February 2019): 775–86. http://dx.doi.org/10.1016/j.scitotenv.2018.09.172.

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23

Boelsen‐Robinson, Tara, Alexandra Chung, Marianne Khalil, Evelyn Wong, Ariana Kurzeme, and Anna Peeters. "Examining the nutritional quality of food and beverage consumed at Melbourne aquatic and recreation centres." Australian and New Zealand Journal of Public Health 41, no. 2 (January 22, 2017): 184–86. http://dx.doi.org/10.1111/1753-6405.12632.

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24

Howat, Gary, and Gary Crilley. "Customer Service Quality, Satisfaction, and Operational Performance: A proposed model for Australian public aquatic centres." Annals of Leisure Research 10, no. 2 (January 2007): 168–95. http://dx.doi.org/10.1080/11745398.2007.9686760.

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25

Miller, Robert Rush, and John C. Briggs. "Centres of Origin in Biogeography." Copeia 1985, no. 4 (December 10, 1985): 1086. http://dx.doi.org/10.2307/1445272.

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26

Howat, Gary, Jessica Alikaris, Heather March, and Peter Howat. "Health-related benefits: their influence on loyalty and physical activity participation in Australian public aquatic centres." International Journal of Sport Management and Marketing 12, no. 1/2 (2012): 73. http://dx.doi.org/10.1504/ijsmm.2012.051253.

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Huse, Oliver, Christina Zorbas, Alethea Jerebine, Ari Kurzeme, Miranda Blake, Megan Ferguson, Claire Palermo, et al. "Recreation centre managers’ perceptions of pricing interventions to promote healthy eating." Health Promotion International 35, no. 4 (July 3, 2019): 682–91. http://dx.doi.org/10.1093/heapro/daz062.

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Abstract Retailers have the capacity to improve the food and beverage environment by making healthier options more affordable and attractive for their consumers. The perspectives of retailers on feasible and acceptable pricing strategies are not known. The aim of this study was to understand retailers’ perceptions of factors that are relevant to feasible and acceptable health-promoting food and beverage pricing interventions. A convenience sample of 11 aquatic and recreation centre managers in Victoria, Australia was recruited to participate in semi-structured interviews. We took a pragmatic approach with the aim of understanding retailers’ perceptions of factors that affect the feasibility and acceptability of pricing interventions within their facilities. Thematic analysis was used to synthesize and interpret retailers’ perceptions of pricing interventions. Key themes identified were: structural and organizational characteristics (the internal and external characteristics of aquatic and recreation centres), characteristics of feasible pricing changes (type, magnitude and products targeted by pricing strategies) and business outcomes (profits and customer feedback). Results suggest that pricing interventions to promote healthy food and beverage choices can be feasible and acceptable to retailers, though contextual considerations are likely to be important. Future studies should use these findings to design interventions most likely to be acceptable to retailers, work with retailers to implement health-promoting food and beverage pricing interventions, evaluate the impact on business outcomes including customer perspectives and profitability, and test transferability to other retail settings.

28

Fuller, R., P. Rajagopalan, and J. J. Duverge. "Assessment and modelling of the viability of a solar heating system for aquatic centres in southern Australia." Energy Efficiency 10, no. 5 (April 3, 2017): 1269–78. http://dx.doi.org/10.1007/s12053-017-9517-4.

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29

Puccinelli, Eleonora, Margaux Noyon, and Christopher D. McQuaid. "Does proximity to urban centres affect the dietary regime of marine benthic filter feeders?" Estuarine, Coastal and Shelf Science 169 (February 2016): 147–57. http://dx.doi.org/10.1016/j.ecss.2015.12.017.

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30

Dubrovsky, Yuriy. "Small inlets of the Dnipro River as centres of biodiversity (on the example of the Azure Zone of Kyiv)." GEO&BIO 2022, no. 23 (December 30, 2022): 87–94. http://dx.doi.org/10.15407/gb2308.

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Individual components of river floodplains can notably differ in terms of their environmental significance. Very little is known about the environmental protection role of small inlets, unlike other components of river floodplains. In this aspect, 10 small inlets of the Azure Zone of Kyiv with an area of 200–260 000 m², a depth of 10–350 cm and a degree of overgrowth of 3–95% were investigated. The research was carried out during the summer–autumn period of 2021. The conservation value of individual bays was assessed both by the values of the total taxonomic richness and by the presence of vertebrate species that are subject to special protection in accordance with current legislation. To determine the total taxonomic richness, an express method previously developed by the author of the article was used. Its detailed description is given in the available publication. In almost half of the examined bays, the index of taxonomic richness of hydrobionts exceeded the probable average values. Vertebrate species subject to special protection according to official documents were found in all bays. Among them, the river otter is included in the Red Book of Ukraine, and the terrapin in the international Red Lists. Each of the studied bays is surrounded by dense aquatic and riparian vegetation, which could not vegetate in the absence of the bay. The presence of developed riparian vegetation not only contributes to the improvement of the ecological regime of water bodies, but also considerably increases their conservation value, because it is densely populated by various groups of animals. Usually, there are not only semi-aquatic and moisture-loving species, but also many other species, including ecologically valuable ones, as well as those subject to special protection. Thus, river bays create habitats not only for aquatic but also for riparian species. Thus, the small inlets of the Azure Zone of Kyiv, despite the significant recreational pressure, play a significant role in maintaining the local diversity of the inhabitants of the river floodplain. In general, the conservation of biodiversity associated with small inlets can be combined with the main forms of their recreational use. After all, the task of preserving natural complexes is fundamentally compatible with measures to improve the health of the population of large cities, since both directions require maintaining the proper state of the environment.

31

Howat, Gary, and Guy Assaker. "Outcome quality in participant sport and recreation service quality models: Empirical results from public aquatic centres in Australia." Sport Management Review 19, no. 5 (November 2016): 520–35. http://dx.doi.org/10.1016/j.smr.2016.04.002.

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32

ANGERMEIER, PAUL, and MATTHEW WINSTON. "Assessing conservation value of stream communities: a comparison of approaches based on centres of density and species richness." Freshwater Biology 37, no. 3 (June 1997): 699–710. http://dx.doi.org/10.1046/j.1365-2427.1997.00190.x.

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33

Oshima, Júlia Emi de Faria, Marcos César de Oliveira Santos, Mariel Bazzalo, Paulo André de Carvalho Flores, and Fabiano do Nascimento Pupim. "Home ranges of Guiana dolphins (Sotalia guianensis) (Cetacea: Delphinidae) in the Cananéia estuary, Brazil." Journal of the Marine Biological Association of the United Kingdom 90, no. 8 (September 1, 2010): 1641–47. http://dx.doi.org/10.1017/s0025315410001311.

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Home ranges of seven Guiana dolphins (Sotalia guianensis) (Van Bénéden, 1864) were studied in the Cananéia estuary (~25°03′S 47°55′W), south-eastern Brazil. Boat-based observations were conducted from May 2000 to July 2003 in ~132 km2 of protected inner waters. The photo-identification technique was used to follow naturally marked individuals through time and space. From a total of 138 catalogued individuals, five males and two females presented 20+ sightings and were used for home range estimation. Sightings were plotted and analysed in a Geographic Information System (GIS). With the ‘Home Range Tools’ extension the fixed kernel density estimator with band width (smoothing parameter) chosen via least squares cross-validation was performed for each individual. The fixed kernel method was used to estimate the non-parametric utility distribution of each dolphin, keeping band width (h) constant for a data set. The first polygons created by these parameters had an amoeboid shape and in some cases more than one centre of activity. The 95% home range estimated outlines varied from 1.6 to 22.9 km2 (7.9 ± 8.3 km2). This large interval shows strong evidences on individual variation in S. guianensis' home ranges. Several individuals showed small home ranges when compared to other cetacean species. An overlap of home ranges of different sizes and shapes were observed for Guiana dolphins with large range movements. Centres of activity were concentrated in the main entrance of the Cananéia estuary. This was a first attempt to understand the way S. guianensis uses the Cananéia estuary and such data are essential for conservation and management purposes.

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Passantino, L., N. Santamaria, R. Zupa, C. Pousis, R. Garofalo, A. Cianciotta, E. Jirillo, F. Acone, and A. Corriero. "Liver melanomacrophage centres as indicators of Atlantic bluefin tuna, Thunnus thynnus L. well-being." Journal of Fish Diseases 37, no. 3 (May 2, 2013): 241–50. http://dx.doi.org/10.1111/jfd.12102.

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35

Ereskovsky, Alexander V., Dennis V. Lavrov, and Philippe Willenz. "Five new species of Homoscleromorpha (Porifera) from the Caribbean Sea and re-description ofPlakina jamaicensis." Journal of the Marine Biological Association of the United Kingdom 94, no. 2 (April 10, 2013): 285–307. http://dx.doi.org/10.1017/s0025315413000295.

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Five new species of Homoscleromorpha (Porifera) of four genera,Oscarella,Plakortis,PlakinaandCorticium, are described from vertical walls of reef caves at depths ranging from 23 to 28 m in the Caribbean Sea.Oscarella nathaliaesp. nov. has a leaf-like thinly encrusting, flat body, loosely attached to the substrate and a perforated, not lobate surface.Oscarella nathaliaesp. nov. contains two bacterial morphotypes and is characterized by two mesohylar cell types with inclusions.Plakortis myraesp. nov. has diods of two categories: abundant large ones (83–119 μm long) and rare small ones (67–71 μm long) with sinuous, S-bent centres; triods Y- or T-shaped (18–5 μm long), and abundant microrhabds (5–12 μm long).Plakortis edwardsisp. nov. has diods of one category with thick, sinuous, S-bent centres (110 to 128 μm long); triods T-shaped (actines 28–59 μm long). It is the only species of this genus showing small diods (22–31 μm long).Plakortis dariaesp. nov. has diods of two categories: large ones (67–112 μm long) and small, rare, irregular ones, slightly curved, often deformed with one end blunt (30–59 μm long); triods rare and regular (actines 20–44 μm long).Corticium diamantensesp. nov. has oscula situated near its border, regular non-lophose calthrops of one size-class, very rare tetralophose calthrops and candelabra with the fourth actine ramified basally in 4–5 microspined rays. In addition, a re-description ofPlakina jamaicensisis based on newly collected material and the type specimen.Plakortis jamaicensishas a convoluted brain-like surface; well developed sub-ectosomal cavities; irregular sinuous diods, triods, calthrops, rare monolophose calthrops, rare dilophose calthrops, rare trilophose calthrops and common tetralophose calthrops. Molecular ‘barcoding’ sequences for mitochondrial cob are given forPlakortis edwardsisp. nov.,P. dariaesp. nov.,Plakina jamaicensisandCorticium diamantensesp. nov. An identification key for all western Atlantic Homoscleromorpha is provided.

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Post, John R., and Eric A. Parkinson. "Temporal and spatial patterns of angler effort across lake districts and policy options to sustain recreational fisheries." Canadian Journal of Fisheries and Aquatic Sciences 69, no. 2 (February 2012): 321–29. http://dx.doi.org/10.1139/f2011-163.

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Studies suggest anglers allocate fishing effort across lakes districts based on fishing quality and travel time resulting in high effort near urban areas, which declines with distance. This results in quality fisheries in remote areas and poorer quality near population centres. In this paper we explore the effectiveness of harvest and effort regulations to counter this tendency for overfishing and stock collapse for a rainbow trout ( Oncorhynchus mykiss ) fishery from a lake district in British Columbia, Canada. Our results suggest that daily bag limits can improve fishing quality if the effort is not too high, but fail to prevent collapse close to population centres. The ability of complete catch-and-release regulations to maintain quality fisheries is inversely related to the rate of release mortality. Catch-and-release fisheries with low mortality can maintain quality close to large cities, whereas higher release mortality does not prevent collapse. Direct fishing effort limitation can maintain quality fisheries, but a high proportional reduction in effort is required to maintain quality near population centres. Explicit consideration of the location of fisheries within lake districts is necessary to design effective management approaches and will likely require a mixed strategy with substantial spatial variation in harvest control.

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Viloria, Leandro A. "A network of regional centres of environmental education and training: A strategy for developing countries." Marine Pollution Bulletin 23 (January 1991): 633–35. http://dx.doi.org/10.1016/0025-326x(91)90747-g.

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Wijaya, I. M. W., I. G. Y. Partama, and I. K. Sumantra. "Study on Nutrients Concentration Trends in Tukad Badung River Toward Nutrient Recovery Potential." IOP Conference Series: Earth and Environmental Science 1268, no. 1 (December 1, 2023): 012002. http://dx.doi.org/10.1088/1755-1315/1268/1/012002.

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Abstract This study addresses the urgent concern of water quality degradation resulting from untreated domestic wastewater discharge, with a specific focus on nutrient trends within an aquatic ecosystem. The investigation centres on ammonium (NH4 +) as a significant contaminant sourced from residual foods, hygiene practices, and fertilizers, known for its association with eutrophication—characterized by excessive algae growth and oxygen depletion. The study aims to offer comprehensive insights by meticulously analysing water quality parameters across six distinct sampling points. Data collection encompassed total suspended solids (TSS), ammonia (NH4 +), nitrite (NO2 −), nitrate (NO3 −), total phosphate (PO4 −), and total nitrogen (TN). Notable variations were observed: TSS concentrations ranged from 9.00 mg/L to 20.00 mg/L, NH4 + concentrations spanned 0.00 mg/L to 1.96 mg/L, NO2- and NO3 − levels varied from 0.00 mg/L to 0.16 mg/L and 1.19 mg/L to 1.91 mg/L, respectively, PO4 3- content ranged from 0.01 mg/L to 0.65 mg/L, and TN concentrations fluctuated between 1.36 mg/L and 3.31 mg/L. These findings underscore the complexity of water quality dynamics and highlight the need for integrated management strategies to mitigate nutrient pollution’s impact on aquatic ecosystems.

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Balaguera, Alejandra, Jaume Alberti, Gloria I. Carvajal, and Pere Fullana-i-Palmer. "Stabilising Rural Roads with Waste Streams in Colombia as an Environmental Strategy Based on a Life Cycle Assessment Methodology." Sustainability 13, no. 5 (February 25, 2021): 2458. http://dx.doi.org/10.3390/su13052458.

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Roads with low traffic volume link rural settlements together and connect them with urban centres, mobilising goods and agricultural products, and facilitating the transportation of people. In Colombia, most of these roads are in poor conditions, causing social, economic, and environmental problems, and significantly affecting the mobility, security, and economic progress of the country and its inhabitants. Therefore, it is essential to implement strategies to improve such roads, keeping in mind technical, economic, and environmental criteria. This article shows the results of the application of the environmental life cycle assessment—LCA—to sections of two low-traffic roads located in two different sites in Colombia: one in the Urrao area (Antioquia), located in the centre of the country; and another in La Paz (Cesar), located in the northeast of the country. Each segment was stabilised with alternative materials such as brick dust, fly ash, sulfonated oil, and polymer. The analysis was carried out in three stages: the first was the manufacture of the stabiliser; the second included preliminary actions that ranged from the search for the material to its placement on site; and the third was the stabilisation process, which included the entire application process, from the stabiliser to the road. The environmental impacts are mainly found in the manufacture of stabilisers (60% of the total), for sulfonated oil or polymer, due to the different compounds used during production, before their use as stabilisers. The impact categories with the greatest influence were abiotic depletion potential (ADP), global warming potential (GWP) and terrestrial ecotoxicity potential (TETP). For the stabilisation stage (impact between 40% and 99%), ash and brick dust have the highest impacts. The impact categories most influenced in this stage were: acidification potential (AP), freshwater aquatic ecotoxicity potential (FAETP), human toxicity potential (HTP), marine aquatic ecotoxicity potential (MAETP) and photochemical ozone creation potential (POCP).

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Tomas, J. "The appearance of accessory growth centres in adult whiting Merlangius merlangus otoliths." Journal of Fish Biology 69, no. 2 (August 2006): 601–7. http://dx.doi.org/10.1111/j.1095-8649.2006.01006.x.

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41

Ferreira, Tiago M., and Pedro P. Santos. "An Integrated Approach for Assessing Flood Risk in Historic City Centres." Water 12, no. 6 (June 9, 2020): 1648. http://dx.doi.org/10.3390/w12061648.

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Historic city centres near watercourses are a specific type of urban area that are particularly vulnerable to flooding. In this study, we present a new methodology of flood risk assessment that crosses hazard and physical vulnerability information. We have selected the Historic City Centre of Guimarães (Portugal), a UNESCO Heritage Site, for developing and testing the defined methodology. The flood hazard scenario was obtained through the hydrologic–hydraulic modelling of peak flows with a 100-year return period, which provided flood extent, depths, and velocities. A decomposition of the momentum equation, using depth and velocity, allowed reaching a final hazard score. Flood vulnerability was assessed through combining an exposure component and a sensitivity component, from field-collected data regarding wall orientation, heritage status, age, number of storeys, condition, and material of buildings. By combining the results of the hazard and vulnerability modules in a risk-matrix, three qualitative levels of flood risk were defined. The individual and crossed analysis of results proved to be complementary. On one hand, it allows the identification of the more relevant risk factors—from the hazard or vulnerability modules. On the other hand, the risk-matrix identified other buildings with a high risk that otherwise would remain unnoticed to risk managers.

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Edwards, J. W., K. S. Edyvane, V. A. Boxall, M. Hamann, and K. L. Soole. "Metal Levels in Seston and Marine Fish Flesh Near Industrial and Metropolitan Centres in South Australia." Marine Pollution Bulletin 42, no. 5 (May 2001): 389–96. http://dx.doi.org/10.1016/s0025-326x(00)00168-5.

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43

Passantino, Letizia, Rosa Zupa, Chrysovalentinos Pousis, Constantinos C. Mylonas, Edmond Hala, Emilio Jirillo, and Aldo Corriero. "Increased melanomacrophage centres in the liver of reproductively dysfunctional female greater amberjack Seriola dumerili (Risso, 1810)." Journal of Fish Diseases 43, no. 4 (February 27, 2020): 503–14. http://dx.doi.org/10.1111/jfd.13149.

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44

southall, e. j., d. w. sims, j. d. metcalfe, j. i. doyle, s. fanshawe, c. lacey, j. shrimpton, j. l. solandt, and c. d. speedie. "spatial distribution patterns of basking sharks on the european shelf: preliminary comparison of satellite-tag geolocation, survey and public sightings data." Journal of the Marine Biological Association of the United Kingdom 85, no. 5 (October 2005): 1083–88. http://dx.doi.org/10.1017/s0025315405012129.

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current concerns about the population levels of the basking shark (cetorhinus maximus) in the north-east atlantic have prompted a need to understand population distribution, habitat preference and centres of abundance. in this study, spatial distribution maps derived from satellite-tag geolocations, boat surveys and public sightings data were compared. the broad distribution patterns revealed by these different methods are similar, but there are considerable differences in density distributions. surface sightings data show high densities, or ‘hotspots’ in the hebridean sea, clyde sea, irish sea and close inshore around devon and cornwall. tag geolocations, in contrast, identified two areas where individuals spent considerable time outside the distributions indicated by surveys and public sightings: the celtic sea and western approaches of the english channel. the reason for this disparity and its implications for population estimates for the species are discussed.

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Van den Neucker, Tom, and Kevin Scheers. "Mislabelling may explain why some prohibited invasive aquatic plants are still being sold in Belgium." Knowledge & Management of Aquatic Ecosystems, no. 423 (2022): 8. http://dx.doi.org/10.1051/kmae/2022005.

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In Belgium, a voluntary code of conduct intended to prevent introduction of invasive plants through the horticultural trade has been implemented since 2009. European Regulation 1143/2014 that imposes legal bans on a number of plant taxa entered into force in 2015. However, studies regarding the presence of invasive plants in the Belgian horticultural trade remained scarce. In 2016–2017 and in 2020, we surveyed a total of 11 garden centres specialized in water gardening and compiled a list of 285 aquatic plant taxa that were being traded. In 2020, four Belgian Consensus List species and one Communication List species were still offered for sale. Also, three species of Union Concern were still being sold in 2020. The plants of the Belgian Lists that were still being sold in 2020 and all except one of the European Union List plants were mislabelled, either because of misidentification or because a taxonomic synonym was used. Mislabelling may explain why some prohibited plants were still in trade. Therefore, retailers and plant producers should be encouraged to correctly identify the plants that are being traded. Our study illustrates that regular surveys are essential to assess the effectiveness of voluntary codes of conduct and legal trade bans.

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Gass, S. E., and J. M. Roberts. "Growth and branching patterns of Lophelia pertusa (Scleractinia) from the North Sea." Journal of the Marine Biological Association of the United Kingdom 91, no. 4 (June 2, 2010): 831–35. http://dx.doi.org/10.1017/s002531541000055x.

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Lophelia pertusa, a cosmopolitan cold-water coral, offers potential for new palaeoclimate proxies. This study investigated its skeletal growth patterns to aid in this development. Corallite characteristics (calyx diameter, height, thecal width and banding) of L. pertusa sampled from oil platforms in the northern North Sea were examined. The mean distance between daughter polyps along a growth axis (27.4 ± 5 mm, SD) was equivalent to the estimated annual growth rate; hence, the polyps bud once a year. The majority of growth occurred in the first year when the characteristic trumpet shape of a corallite was formed, while the thecal wall thickened more consistently. Further examination of two polyps showed a dark growth band and centres of calcification along the full length of the inner theca, which represents early skeletal growth. Skeletal sampling adjacent to this area along sequential polyps shows promise as an annual chronology in these North Sea corals.

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Jones, K. M. M. "Home range areas and activity centres in six species of Caribbean wrasses (Labridae)." Journal of Fish Biology 66, no. 1 (January 2005): 150–66. http://dx.doi.org/10.1111/j.0022-1112.2005.00589.x.

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48

Howat, Gary, and Guy Assaker. "The hierarchical effects of perceived quality on perceived value, satisfaction, and loyalty: Empirical results from public, outdoor aquatic centres in Australia." Sport Management Review 16, no. 3 (August 2013): 268–84. http://dx.doi.org/10.1016/j.smr.2012.10.001.

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49

Raabe, Joshua K., Beth Gardner, and Joseph E. Hightower. "A spatial capture–recapture model to estimate fish survival and location from linear continuous monitoring arrays." Canadian Journal of Fisheries and Aquatic Sciences 71, no. 1 (January 2014): 120–30. http://dx.doi.org/10.1139/cjfas-2013-0198.

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We developed a spatial capture–recapture model to evaluate survival and activity centres (i.e., mean locations) of tagged individuals detected along a linear array. Our spatially explicit version of the Cormack–Jolly–Seber model, analyzed using a Bayesian framework, correlates movement between periods and can incorporate environmental or other covariates. We demonstrate the model using 2010 data for anadromous American shad (Alosa sapidissima) tagged with passive integrated transponders (PIT) at a weir near the mouth of a North Carolina river and passively monitored with an upstream array of PIT antennas. The river channel constrained migrations, resulting in linear, one-dimensional encounter histories that included both weir captures and antenna detections. Individual activity centres in a given time period were a function of the individual’s previous estimated location and the river conditions (i.e., gage height). Model results indicate high within-river spawning mortality (mean weekly survival = 0.80) and more extensive movements during elevated river conditions. This model is applicable for any linear array (e.g., rivers, shorelines, and corridors), opening new opportunities to study demographic parameters, movement or migration, and habitat use.

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Akramova, F., U. Shakarbaev, Z. Yorkulov, I. Arepbaev, A. Mirzaeva, and D. Azimov. "Life cycle of Bilharziella polonica (Trematoda, Schistosomatidae) parasite of semi-aquatic birds in Uzbekistan." Biosystems Diversity 30, no. 2 (March 21, 2022): 137–42. http://dx.doi.org/10.15421/012213.

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Schistosomatidae are an actively studied ecological group of trematodes. Their ability to cause various parasitic diseases in animals and humans makes them an interesting object of study for a number of research centres worldwide. One of the commonest species in this group is Bilharziella polonica (Kowalewsky, 1895), whose mature stages have been recorded in aquatic and semi-aquatic birds in Uzbekistan. Our research team established that the following birds were infected with mature trematodes B. polonica: Anas platyrhynchos (23%), A. crecca (18%), Podiceps ruficollis (11%), Ardea cinerea (14%) and one individual of Oxyura leucocephala. The highest infection rate was shown by the mallard A. platyrhynchos (23%) and common teal A. crecca (18%). The infection intensity ranged between 2 and 27 individuals. Research into various types of water bodies in Karakalpakstan identified 10 mollusc species – Lymnaeidae (4 species), Planorbidae (4 species) and Physidae (2 species). Cercariae morphologically similar to larvae of B. polonica were found in two species, Planorbis planorbis and P. tangitarensis. 6 chicks of domestic ducks were experimentally infected with those cercariae to track the life cycle of B. polonica in the organism of a definitive host. Helmintholological dissections showed that every duck was infected with B. polonica, which became mature 23–27 days after the infection. Eggs of B. polonica were recorded in the excrement of one of the birds 33–35 days after the infection. Based on field and experimental research, we identify the mollusc P. tangitarensis as a new intermediate host for B. polonica in Uzbekistan.

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