Do not “let them eat cake” : Correlation of food-consumption patterns among rural primary school children from welfare and non-welfare households
- Authors: Terry, Daniel , Ervin, Kaye , Soutter, Erin , Spiller, Renata , Nogare, Nicole , Hamilton, Andrew
- Date: 2017
- Type: Text , Journal article
- Relation: International Journal of Environmental Research and Public Health Vol. 14, no. 1 (2017), p. 1-10
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- Description: Physical and financial access impacts food choice and consumption, while educational attainment, employment, income, gender, and socioeconomic status are also influential. Within this context, the aim of the paper is to examine the association between various foods consumed and eating patterns of children between low and higher income households. A paper-based survey was completed by parents/carers of children in 41 primary schools in rural and regional areas of Victoria. Data collected included demographics and the consumption of fruit, vegetable, and other foods including drinks. Ordinal data were analysed using Spearman’s rank-order correlation. The main findings were that children who consumed more fruit and vegetables tended to have a higher intake of healthy drinks (plain milk and water) as well as a lower intake of unhealthy snacks and drinks (sugar sweetened drinks). Those who perceived that fruit and vegetables cost too much reported greater consumption of unhealthy snacks and sugar-sweetened beverages, which was more prominent in low-income households. Changing food consumption behaviours requires a complex systems-based approach that addresses more than just individual issues variables. A participatory approach that works with local communities and seeks to build an understanding of unique challenges within sub-groups has potential for embedding long-lasting and meaningful change in eating behaviours. © 2016 by the authors; licensee MDPI, Basel, Switzerland.
Waterbird use of farm dams in south-eastern Australia : Abundance and influence of biophysical and landscape characteristics
- Authors: Hamilton, Andrew , Conort, Chloe , Bueno, Aurore , Murray, Christopher , Grove, James
- Date: 2017
- Type: Text , Journal article
- Relation: Avian Research Vol. 8, no. 1 (2017), p. 1-13
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- Description: Background: While agriculture has taken much environmental water in Australia's Murray-Darling Basin, agricultural expansion has resulted in a vast number of farm dams, almost three-quarters of a million in the Murray-Darling Basin alone. Methods: Over a summer we studied (1) waterbird abundance and species richness and (2) the influence of biophysical and landscape characteristics across 49 farm dams at a large mixed-enterprise farm in northern Victoria on the southern reach of the Murray-Darling Basin. Results: On average, dams were found to host 27.1 ± 71.1 individuals/ha and 1.8 ± 2.9 species per pond. Such densities are comparable to those on natural wetlands. Dam surface area and perimeter and amount of vegetation were positively and strongly correlated with the Rallidae density (birds/ha), but no other parameters were strongly correlated with any other functional group. The landscape in which the dams were embedded had a highly significant effect (p < 0.001) on the number of birds found on a dam. Conclusions: Our research needs to be complemented with further studies in other parts of the Basin and on other taxa, but given at our site they supported similar densities of individuals and species to natural wetlands, and given the fact that there are 710,539 farm dams in the Murray-Darling Basin, which hosts much of Australia's waterbird fauna, it is reasonable to suggest that farm dams are overlooked, and possibly very important, avian biodiversity hotspots. It also highlights the importance of a landscape setting, in which dams are situated, on the number of birds using the dams. © 2017 The Author(s).
Conjunctive howeveritis : A corpus-based analysis of however used as a conjunction
- Authors: Hamilton, Andrew
- Date: 2016
- Type: Text , Journal article
- Relation: English Today Vol. 32, no. 4 (2016), p. 19-26
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- Description: The word however is an adverb and an adverb alone. The current online Oxford (Oxford English Dictionary Online, n.d.) and Cambridge (Cambridge English Dictionary Online, n.d. a) English dictionaries both have it listed solely as an adverb for British English. At the risk of awakening yet another descriptivist versus prescriptivist war, it must however be acknowledged that however is often used as a conjunction. This can, and frequently does, lead to confusion though, as the reader has to read on before realising that in fact that however was actually being used as a conjunction (or connective' in modern grammatical parlance). However the cat walked down the street ...' surely has the reader thinking something along the lines of In whatever manner the cat walked down the street ...' But a typical case of what I shall in this article call conjunctive howeveritis would reveal a complete (well, incomplete actually) sentence along the lines of, However the cat walked down the street, even though it rarely ventured from the house.' Not only are we now left with a sentence fragment, but in such an instance the reader would have to backtrack and subsequently assume the However was in fact being used as a coordinating conjunction. To me this is inefficient and an enemy of lucid writing. The Cambridge English Dictionary raises the warning flag high with the following example (Cambridge English Dictionary Online, n.d. b): We can't use however as a conjunction instead of but to connect words and phrases:
Assessment of public health risk associated with viral contamination in harvested urban stormwater for domestic applications
- Authors: Lim, Keah-Ying , Hamilton, Andrew , Jiang, Sunny
- Date: 2015
- Type: Text , Journal article
- Relation: Science of the Total Environment Vol. 523, no. (2015), p. 95-108
- Full Text: false
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- Description: Capturing stormwater is becoming a new standard for sustainable urban stormwater management, which can be used to supplement water supply portfolios in water-stressed cities. The key advantage of harvesting stormwater is to use low impact development (LID) systems for treatment to meet water quality requirement for non-potable uses. However, the lack of scientific studies to validate the safety of such practice has limited its adoption. Microbial hazards in stormwater, especially human viruses, represent the primary public health threat. Using adenovirus and norovirus as target pathogens, we investigated the viral health risk associated with a generic scenario of urban stormwater harvesting practice and its application for three non-potable uses: 1) toilet flushing, 2) showering, and 3) food-crop irrigation. The Quantitative Microbial Risk Assessment (QMRA) results showed that food-crop irrigation has the highest annual viral infection risk (median range: 6.8×10-4-9.7×10-1 per-person-per-year or pppy), followed by showering (3.6×10-7-4.3×10-2pppy), and toilet flushing (1.1×10-7-1.3×10-4pppy). Disease burden of each stormwater use was ranked in the same order as its viral infection risk: food-crop irrigation>showering>toilet flushing. The median and 95th percentile risk values of toilet-flushing using treated stormwater are below U.S. EPA annual risk benchmark of ≤10-4pppy, whereas the disease burdens of both toilet-flushing and showering are within the WHO recommended disease burdens of ≤10-6DALYspppy. However, the acceptability of showering risk interpreted based on the U.S. EPA and WHO benchmarks is in disagreement. These results confirm the safety of stormwater application in toilet flushing, but call for further research to fill the data gaps in risk modeling as well as risk benchmarks. © 2015 Elsevier B.V.
New approaches narrow global species estimates for beetles, insects, and terrestrial arthropods
- Authors: Stork, Nigel , McBroom, James , Gely, Claire , Hamilton, Andrew
- Date: 2015
- Type: Text , Journal article
- Relation: Proceedings of the National Academy of Sciences of the United States of America Vol. 112, no. 24 (2015), p. 7519-7523
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- Description: It has been suggested that we do not know within an order of magnitude the number of all species on Earth [May RM (1988) Science 241(4872):1441-1449]. Roughly 1.5 million valid species of all organisms have been named and described [Costello MJ, Wilson S, Houlding B (2012) Syst Biol 61(5):871-883]. Given Kingdom Animalia numerically dominates this list and virtually all terrestrial vertebrates have been described, the question of how many terrestrial species exist is all but reduced to one of how many arthropod species there are. With beetles alone accounting for about 40% of all described arthropod species, the truly pertinent question is how many beetle species exist. Here we present four new and independent estimates of beetle species richness, which produce a mean estimate of 1.5 million beetle species. We argue that the surprisingly narrow range (0.9-2.1 million) of these four autonomous estimates - derived from host-specificity relationships, ratios with other taxa, plant:beetle ratios, and a completely novel body-size approach - represents a major advance in honing in on the richness of this most significant taxon, and is thus of considerable importance to the debate on how many species exist. Using analogous approaches, we also produce independent estimates for all insects, mean: 5.5 million species (range 2.6-7.8 million), and for terrestrial arthropods, mean: 6.8 million species (range 5.9-7.8 million), which suggest that estimates for the world's insects and their relatives are narrowing considerably. © 2015, National Academy of Sciences. All rights reserved.
Appraisal of random and systematic land cover transitions for regional water balance and revegetation strategies
- Authors: Versace, Vincent , Ierodiaconou, Daniel , Stagnitti, Frank , Hamilton, Andrew
- Date: 2008
- Type: Text , Journal article
- Relation: Agriculture, Ecosystems & Environment Vol. 123, no. 4 (2008), p. 328-336
- Full Text: false
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- Description: This study describes the use of landscape transition analysis as a means for effective basin management. Land cover transitions from 1995 to 2002 were analyzed using a cross-tabulation matrix for an important economic zone in south-west Victoria, Australia. Specifically, the matrix was used to determine whether the transitions were random or systematic. Random landscape transitions occur when a land cover replaces other land covers in proportion to their availability.