The Anthropocene: an Australasian perspective and survey.

In 2000, Crutzen and Stoermer suggested that the Holocene (the geological period of time since 11,700 years ago: Walker et al., 2009) had finished and that humanity had now entered the “Anthropocene”. As summarised by Steffen et al. (2011) and Wolfe et al. (2013), these scientists were referring to the Anthropocene as the interval of demonstrable human alteration of global biogeochemical cycles, beginning subtly in the late 18th Century following James Watt’s invention of the coal-fired steam engine, and accelerating markedly in the mid-20th Century (called “The Great Acceleration”)

The theme of faith in the Hezekiah narratives

This study examines the Hezekiah narratives as found in 2 Kgs 18-20 and Isa. 36-39, with special reference to the theme of faith, using narrative criticism as its methodology. Attention is paid especially to setting, plot, point of view and characterization within the narratives. The Kings version is taken as the main text for exegesis purposes, but relevant differences in the Isaiah text are noted. Articles and books on "faith" in the Old Testament rarely mention Hezekiah as an example of faith. Until recently, studies that have treated the theme of faith in the book of Isaiah have tended to neglect this section because of their historical-critical stance. Again, there are many studies of the Hezekiah narratives, but few focus on literary methods and/or the theme of faith. The major part of the study involves an exegesis of the text. How the narratives function within the context of the book of Kings is also considered. Furthermore, faith as a theme in the book of Isaiah is examined, and comparison is made especially between Isa. 36 and Isa. 7. The plot of the longest narrative (2 Kgs 18:13-19:37/Isa. 36-37) proves to be very instructive in the way that the verb nn (to trust) is used. Isaiah, YHWH, Sennacherib and Hezekiah emerge as main characters within the narratives. Different points of view and the use of temporal and geographical setting also reinforce the characterization. In particular, a largely positive portrait of Hezekiah as an example of faith emerges

Review of recirculation aquaculture system technologies and their commercial application

Recirculation aquaculture systems (RAS) are designed to minimise water consumption, control culture conditions and allow waste streams to be fully managed. They can also provide some degree of biosecurity through measures to isolate the stock from the external environment. RAS technology has steadily developed over the past 30 years and is widely used for broodstock management, in hatcheries and increasingly for salmon smolt production. By comparison, the progress of RAS for grow-out to market size products has been more restricted and there is a substantial track record of company failures both in the UK, Europe and internationally. The reasons for this are varied, but include challenges of economic viability and operating systems at commercial scales. This review considers the current status of RAS technology and its commercial application with particular reference to its potential impact on Scottish aquaculture. With increased reliability and efficiency new opportunities are open to the Scottish industry to both enhance salmon production and diversify to other species. On the other hand, the greater flexibility in locating RAS farms could present a threat to some salmon production in Scotland where production can move closer to key centres of consumption – either in the UK or abroad. After all, one of the environmental advantages of RAS is to enable production in areas unsuited to other forms of aquaculture and where promotion of sustainability is a key element. Consequently, farming close to markets, thereby reducing food miles, may have benefits for both the retailer and consumer. However, what proportion of caged salmon production might eventually be substituted by land based RAS is debateable. This may depend on the economic advantage to some current salmon export markets farming salmon in their own country using RAS technology developed in Europe or North America.Report commissioned by Highlands & Islands Enterprise as strategic support to the Scottish Food and Drink Industr

An update on the 2014 report: "Review of Recirculation Aquaculture System Technologies and their Commercial Application"

This report has been commissioned by Highlands and Islands Enterprise to provide an update on the earlier report "Review of Recirculation Aquaculture System Technologies and their Commercial Application" from the same authors and published in 2014. The leading salmon aquaculture companies are all making strategic investments in RAS, mainly for juvenile production. This has been a trend over the past 20 years and has contributed substantially to technology development. The established industry has therefore demonstrated a willingness to adopt RAS technologies where they perceive a strong business case, such as enabling more consistent year-round supplies of juveniles. Parallel to the strategic adoption of RAS by existing salmon producers has been a series of RAS based grow-out projects based on a mix of optimistic technology promises and ethically driven enthusiasm for land-based farming drawing in investment from equity investors as well as government and other non-government organisations. Most of these have experienced a range of technical, financial and market problems and have either failed completely or are operating at a loss. Nevertheless, there is substantial momentum and lessons are being learned and technology is developing at a faster rate than when previously assessed in 2014. The lack of investment in grow-out RAS by established producers, notably salmon companies already culturing smolts in RAS, may reflect their greater understanding of market and economic fundamentals and/or reluctance to invest in disruptive technology given their heavy investments in cage grow-out production. More encouragingly, entry into the RAS sector by major water and sanitation companies such as Veolia, capable of more standardised technology development suggests previous barriers will be overcome. The immediate interest of the Scottish salmon industry is in strategies to reduce the impact of sea lice and other disease problems. One element of this is to reduce the time the fish are in sea cages through the stocking of post-smolts of between 250g and 1 kg in weight. It appears likely that landbased RAS could provide an economic means of achieving this, although sea-based closed containment systems are also being investigated as a potential alternative. Land-based RAS are also being used for cleaner fish production as another part of the sea lice control strategy. RAS offers opportunities for new species development in Scotland, with examples including sturgeon (caviar), yellow tail, sole, tropical shrimp, and spiny lobster. However, these are generally high value products for which domestic markets may be more limited. If already planned investments in salmon grow-out RAS go ahead in the USA, China and other important export markets for Scotland, long-term market opportunities are likely to be affected. A more substantial risk to the Scottish industry in the short to medium term could be a further decline in social license necessary to achieve ambitious growth-targets due to perceived conflicts with environmental and conservation targets. For this reason, combined with steadily maturing technology and new species opportunities, it is anticipated that aquaculture production using recirculated aquaculture systems will gradually expand in the coming years.Consultancy report produced under contract with Ekos Limited for Highlands and Islands Enterprise. Update of previous 2014 report on the same topic

Quaternary research in New Zealand since 2000: an overview

With the AQUA milestone of 30 years it seems an appropriate time to review the progress and achievements of Quaternary research in New Zealand. This article highlights some of the major achievements since the formal review of New Zealand’s Quaternary record by Newnham et al. (1999). The focus here is on paleoclimate and geochronology and is by no means a comprehensive review. We encourage members to write future articles for Quaternary Australasia (QA) about their exciting projects to keep the wider Australasian community informed. One of the main differences between Australian and New Zealand Quaternary science is the wide use of tephrochronology to correlate and date deposits and events across the landscape, helping to link terrestrial and marine records, especially in the North Island. There have been significant advances using glass-based fission-track dating, corrected for annealing, and the use of the electron microprobe and laser ablation inductively-coupled plasma mass spectrometry for obtaining major- and trace-element analyses, respectively, to chemically fingerprint individual glass shards in tephras to aid their correlation (Shane, 2000; Lowe, 2011). Also the identification and analysis of cryptotephras (concentrations of glass shards not visible as a layer) have greatly expanded the geographic range of many tephras, allowing the application of tephrochronology as a stratigraphic and dating tool across much wider areas than previously possible (Gehrels et al., 2008)

The potential impact of technological innovation on the aquaculture industry

From Executive Summary: Farming of the sea has a long history in many countries, essentially based on a range of modified low-input natural systems, including ponds, shellfish beds and simple enclosures or cages. In the last two decades the intensive farming of marine fish and the scaling up of shellfish culture has been a major trend, prompted by rising demand for aquatic food products precisely when traditional supplies from capture fisheries are in steep decline

A study of the prospects and opportunities for shellfish farming in Scotland: Final report

The study was commissioned by the Scottish Government following the recent publication of the renewed "Strategic Framework for Scottish Aquaculture". The objectives were to: - provide Ministers with a better understanding of the industry - develop policy thinking for the new Strategic Framework for Scottish Aquaculture - provide evidence for the Strategic Framework Shellfish Sub Group - develop policy priorities for European Fisheries Fund awards - develop priorities for Research and Development - assist businesses with their own development effortsStudy funded by Marine Scotland and undertaken by Stirling Aquacultur

A Study of the Prospects and Opportunities for Shellfish Farming in Scotland: Executive Summary

The study was commissioned by the Scottish Government following the recent publication of the renewed "Strategic Framework for Scottish Aquaculture". The objectives were to: - provide Ministers with a better understanding of the industry - develop policy thinking for the new Strategic Framework for Scottish Aquaculture - provide evidence for the Strategic Framework Shellfish Sub Group - develop policy priorities for European Fisheries Fund awards - develop priorities for Research and Development - assist businesses with their own development effortsStudy funded by Marine Scotland and undertaken by Stirling Aquacultur

A Risk Benefit Analysis of Mariculture as a means to Reduce the Impacts of Terrestrial Production of Food and Energy

The Scottish Aquaculture Research Forum (SARF) and WWF-UK commissioned this study to investigate whether the pressure on land and freshwater for future food and energy resources, and impacts on the climate, related to greenhouse gas (GHG) emissions, may be reduced through expansion of global mariculture. The study has undertaken a high level assessment of the ‘environmental footprint’ of global mariculture and terrestrial-based food and energy production systems through the collation and assessment of available Life Cycle Assessments (LCA) for key food products (beef, pork, chicken, freshwater finfish, marine finfish, shellfish and crustacean species) and biomass (terrestrial and algal) for energy production. The outputs of the footprint comparison were then used to assess the risks and benefits of increasing global mariculture, through the development of projected future scenarios in which mariculture contributes differing proportions of projected future food requirements. The analysis also qualitatively considered the socio-economic and wider environmental risks and benefits (e.g. in relation to ecosystem services) of global mariculture expansion, where expansion may occur geographically and whether future technological developments may help mitigate against identified impacts. The study identifies the key uncertainties and limitations of the risk/benefit analysis and makes prioritised recommendations on how these limitations can be addressed and the analysis developed for more regional or site-specific assessments

The Possibility Principle And The Truthmakers For Modal Truths

A necessary part of David Armstrong’s account of truthmakers for modal truths is his Possibility principle: any truthmaker for a contingent truth is also a truthmaker for the possibility of the complement of that contingent truth (if T makes p true and p is contingent, then T makes }*p true). I criticize Armstrong’s Possibility principle for two reasons. First, his argument for the Possibility principle both relies on an unwarranted generalization and vitiates his desire for relevant truthmakers. His argument undercuts relevant truthmakers by entailing that each contingent being is a truthmaker for all modal truths. Second, even if the argument seems successful, the Possibility principle is subject to counterexamples. Armstrong’s being composed of more than fifty atoms makes it true that something composed of more than fifty atoms exists and that truth is contingent, but his being composed of more than fifty atoms does not make it true that it is possible that it is not the case that something composed of more than fifty atoms exists