Academic literature on the topic 'Soils – Australia – Agnes Banks'

Most soils suitable for dryland agriculture in north-west Australia occur in the Daly Basin. These are sesquioxidic soils which include red, yellow and grey earths, and soils related to yellow and red earths. The potential, for these arable soils to be degraded by highly erosive rainfalls, common to the region, is high. Farming practices strongly influence the soil surface characteristics (vegetation cover, roughness, soil strength), which in turn control surface runoff, and sediment detachment and transport. In studies conducted during 1984-89 in the Daly Basin, conventionally tilled catchments, produced 1.5-2 times more runoff and lost 1.5-6 times more soil than their no-tillage counterparts (all catchments were within soil conservation banks). In these conventionally tilled catchments, soil loss was <8.1 t/ha.year. Other studies in the region have shown that, without soil conservation banks, soil loss can be around 100/ha.year under conventional tillage. Little work, however, has been undertaken on farms in the Australian semi-arid tropics to study the movement of nutrients and herbicides (in ionic and adsorbed forms) and further research is warranted.

The troubled taxonomic history of Stylidium graminifolium Sw. ex Willd. (syn. Candollea serrulata Labill.) is reviewed. The entity formerly known as S. graminifolium forms a complex consisting of three species. Stylidium graminifolium sens. str. is lectotypified on the basis of plants collected by Banks and Solander from Botany Bay NSW in 1770. This narrow-linear-leaved species is diploid (2n = 30) and is distributed widely on infertile soils in south-eastern continental Australia and Tasmania. Stylidium armeria Labill., on the basis of plants collected from southern Tasmania in the late 1790s, is a tetraploid (2n = 60), with leaves about two to three or four times wider than in S. graminifolium and more spathulate in shape. It has a strictly littoral habitat along the rough water coasts of Tasmania from Macquarie Heads to Tasman Peninsula, probably extending to the coasts of south-eastern Australia. Stylidium melastachys R.Br., on the basis of plants collected from the Kent Group in Bass Strait in 1803, is synonymous with S. armeria. A third species, S. dilatatum W.D.Jackson and R.J.E.Wiltshire, is described as new. It is morphologically similar to S. graminifolium but has linear leaves about two to three times as wide as S. graminifolium and is a tetraploid (2n = 60). It is widely distributed in Tasmania and in the cooler subalpine areas of south-eastern Australia but is confined to more fertile soils than the soils in which S. graminifolium is found.

Acid sulfate soils (ASS) are distributed worldwide on coastal floodplains, presenting a great challenge to coastal development and urbanisation. Upon oxidation, these soils become stratified with visibly distinguishable soil strata that are progressively less oxidised with depth. In this study, the geotechnical properties, quantified by hydraulic conductivity and consolidation coefficient, of an ASS profile from the Tweed River floodplain, north-eastern New South Wales, Australia, were investigated at a laboratory scale and compared with results obtained from the field. Measurements were conducted with a Rowe cell (or hydraulic consolidometer) by controlled compressive and pore water pressures. The results indicated that hydraulic conductivity and consolidation coefficient values gradually decreased with increasing consolidation pressure or decreasing void ratio, but were significantly higher for the more oxidised ASS horizons. These results suggest that controlled soil consolidation along ASS drainage banks may prove to be effective at reducing acid discharge. Passing low pH (pH 3) or high cation concentration (50 mm CaCl2) solutions through intact consolidated potential ASS samples did not induce changes in the hydraulic conductivity or consolidation coefficient of this material indicating that ASS soil ripening involves more than acidification reactions, and the practice of flushing drains with high ionic strength estuarine tidal waters is unlikely to induce soil subsidence as a result of ASS structural change and clay flocculation.

Harvesting of sandalwood (Santalum spicatum) occurs mainly from wild stands in the semi-arid and arid regions (typical annual rainfall 150–300 mm) of Western Australia. Regeneration of wild sandalwood in these regions is believed to be low since the occurrence of changes in land use associated with European settlement. This is thought to be due to factors including drought, poor seed dispersal and grazing. The objective of the study was to increase the germination and establishment of sandalwood through exploring seed response to rainfall. Additionally, the potential of soil-preparation techniques to utilise trace amounts of moisture was investigated. Two 25-ha plots were located either side of the semi-arid–arid divide. Into the plots 16 replicates of the control and 96 replicates of treatments were installed and sown with 11 200 seeds. Rainfall and other weather parameters were recorded at each site with an automated weather station. The study was replicated in 2008 and 2009. It was concluded from the study that there was a statistically significant relationship between germination and rainfall. It is proposed that the germination threshold is 264 mm per year which coincides with the long-term annual rainfall average of Kalgoorlie, Western Australia. Furthermore, a statistically significant relationship between germination and soil preparation was demonstrated. Ripping crust-forming soils before sowing and the construction of water-harvest banks had a positive effect. Information gained from these studies has led to the Western Australian State Government implementing a seeding program to increase sandalwood regeneration in the semi-arid region.

Sticherus flabellatus (R.Br.) St John, commonly known as Umbrella Fern, is a member of the Gleichenaceae family. Sticherus flabellatus is found on the N.S.W. coast and ranges, Qld, and eastern Victoria in Australia, as well as in New Zealand and New Caledonia. Fronds emerge from underground creeping rhizomes, forming large colonies in sheltered sites in moist gullies and creek banks in open forest. Propagation of the genus Sticherus has previously been relatively unsuccessful. The ferns are difficult to raise from spore and established specimens resent major disturbance to their roots, therefore making them hard to transplant. As a result of these difficulties the properties of the soil in which S. flabellatus grows naturally were investigated to determine the specific requirements for successful growth. Soil was collected from naturally occurring stands of S. flabellatus growing in a diverse range of sites within and on the periphery of the Sydney Basin. At each site a core of soil (12 cm diameter x 12 cm high) was taken at ≈0, 25, and 50 m along a line transect situated within a S. flabellatus stand, providing three replicates for each site. Physical and chemical properties were determined for each site. Particle size and consequently soil texture were determined using the hydrometer method. Electrical conductivity (EC) and pH readings were taken in a 1 soil: 5 water solution. pH readings were also taken in a 1 soil: 5 CaCl solution. Available P was analysed using the Bray (no. 2) method and organic carbon through colorimetric measurement after dichromate acid digestion. We found that S. flabellatus prefers growing in quite acidic soil with an average pH of 5.2 in a water solution and 4.0 in a CaCl solution. The EC readings were also significantly low with a mean reading of 37.0 μS•cm-1. Organic carbon was measured at a mean of 2.4% and available P at 4.1 mg•kg-1 of soil. Using the International Soil Texture Triangle the soil in which S. flabellatus is found growing can be classified as sandy. The average sand content was 87.6%, clay 6.8% and silt 5.5%. These results show that S. flabellatus grows naturally in highly acidic, nutrient poor sandy soils that contain only minimal amounts of organic carbon and phosphorus. Therefore this needs to be taken in consideration when trying to successfully propagate the fern.

Keynote paper presented at the International Leucaena Conference, 1‒3 November 2018, Brisbane, Queensland, Australia.Leucaena leucocephala became naturalized in Paraguay long ago. However, due to cases of toxicity in horses and cattle, now identified as mimosine toxicity, leucaena was considered a weed until the beginning of this millennium. At this time the mimosine toxicity problem was overcome by the introduction of ruminal fluid from Australia containing the mimosine-degrading and -detoxifying bacterium Synergistes jonesii. As long as an internationally funded technical assistance project was operating (offering technical advice, provision of seed, seed scarification service and transmission of ruminal fluid containing Synergistes), the area sown to leucaena (either in twin rows into grass pastures or as fodder banks) increased rapidly in Paraguay, particularly in the Chaco area. However, the powdery fluvisols of the drier parts of the Chaco were not well suited to growth of leucaena, as persistence was restricted due to the impact of rodents, termites and also leaf-cutting ants, which prosper particularly well in this part of the Chaco. In more humid areas with usually heavier soils, currently leucaena represents an integral part of the feeding systems in hundreds of Paraguayan farms (large-scale as well as smallholders), mainly for steer fattening and dairy cow supplementation. After taking into account the above-mentioned setbacks, the total area of leucaena is currently estimated at about 10,000 ha.

We have studied the ecology and conservation requirements of Banksia species in the species-rich sandplains of south-western Australia for 25 years. Loss of habitat through land-clearing has had the greatest impact on their conservation status over the last 50 years. Ascertaining optimal conditions for conservation management in bushland requires detailed knowledge of the species under consideration, including demographic attributes, fire regime, growing conditions and interactions with other species. Where populations have been fragmented, seed production per plant has also fallen. The group most vulnerable to the vagaries of fire, disease, pests, weeds and climate change are the non-sprouters, rather than the resprouters, with population extinction so far confined to non-sprouting species. Recent short-interval fires (<8 years) appear to have had little impact at the landscape scale, possibly because they are rare and patchy. Fire intervals exceeding 25–50 years can also lead to local extinction. Up to 200 viable seeds are required for parent replacement in Banksia hookeriana when growing conditions are poor (low post-fire rainfall, commercial flower harvesting) and seed banks of this size can take up to 12 years to be reached. Seed production is rarely limited by pollinators, but interannual seasonal effects and resource availability are important. Genetic diversity of the seed store is quickly restored to the level of the parents in B. hookeriana. Florivores and granivores generally reduce seed stores, although this varies markedly among species. In Banksia tricuspis, black cockatoos actually increase seed set by selectively destroying borers. Potential loss of populations through the root pathogen Phytophthora cinnamomi also challenges management, especially in the southern sandplains. Prefire dead plants are a poor source of seeds for the next generation when fire does occur. Harvesting seeds and sowing post-fire have much to commend them for critically endangered species. Bare areas caused by humans can result in ideal conditions for plant growth and seed set. However, in the case of B. hookeriana/B. prionotes, disturbance by humans has fostered hybridisation, threatening the genetic integrity of both species, whereas fine-textured soils are unsuitable for colonisation or rehabilitation. Few viable seeds become seedlings after fire, owing to post-release granivory and herbivory and unsuitable germination conditions. Seedling-competitive effects ensure that season/intensity of fire is not critical to recruitment levels, except in the presence of weeds. Water availability during summer–autumn is critical and poses a problem for conservation management if the trend for declining rainfall in the region continues. Our simulation modelling for three banksias shows that the probability of co-occurrence is maximal when fire is stochastic around a mean of 13 years, and where fire-proneness and post-fire recruitment success vary in the landscape. Modelling results suggest that non-sprouting banksias could not survive the pre-European frequent-fire scenario suggested by the new grasstree technique for south-western Australia. However, we have yet to fully explore the conservation significance of long-distance dispersal of seeds, recently shown to exceed 2.5 km in B. hookeriana.

The academic journal is obsolete. In a world where there are more titles than ever, this is a comment on their form – especially the print journal – rather than their quantity. Now that you can get everything online, it doesn’t really matter what journal a paper appears in; certainly it doesn’t matter what’s in the same issue. The experience of a journal is rapidly obsolescing, for both editors and readers. I’m obviously not the first person to notice this (see, for instance, "Scholarly Communication"; "Transforming Scholarly Communication"; Houghton; Policy Perspectives; Teute), but I do have a personal stake in the process. For if the journal is obsolete then it follows that the editor is obsolete, and I am the editor of the International Journal of Cultural Studies. I founded the IJCS and have been sole editor ever since. Next year will see the fiftieth issue. So far, I have been responsible for over 280 published articles – over 2.25 million words of other people’s scholarship … and counting. We won’t say anything about the words that did not get published, except that the IJCS rejection rate is currently 87 per cent. Perhaps the first point that needs to be made, then, is that obsolescence does not imply lack of success. By any standard the IJCS is a successful journal, and getting more so. It has recently been assessed as a top-rating A* journal in the Australian Research Council’s journal rankings for ERA (Excellence in Research for Australia), the newly activated research assessment exercise. (In case you’re wondering, M/C Journal is rated B.) The ARC says of the ranking exercise: ‘The lists are a result of consultations with the sector and rigorous review by leading researchers and the ARC.’ The ARC definition of an A* journal is given as: Typically an A* journal would be one of the best in its field or subfield in which to publish and would typically cover the entire field/ subfield. Virtually all papers they publish will be of very high quality. These are journals where most of the work is important (it will really shape the field) and where researchers boast about getting accepted.Acceptance rates would typically be low and the editorial board would be dominated by field leaders, including many from top institutions. (Appendix I, p. 21; and see p. 4.)Talking of boasting, I love to prate about the excellent people we’ve published in the IJCS. We have introduced new talent to the field, and we have published new work by some of its pioneers – including Richard Hoggart and Stuart Hall. We’ve also published – among many others – Sara Ahmed, Mohammad Amouzadeh, Tony Bennett, Goran Bolin, Charlotte Brunsdon, William Boddy, Nico Carpentier, Stephen Coleman, Nick Couldry, Sean Cubitt, Michael Curtin, Daniel Dayan, Ben Dibley, Stephanie Hemelryk Donald, John Frow, Elfriede Fursich, Christine Geraghty, Mark Gibson, Paul Gilroy, Faye Ginsberg, Jonathan Gray, Lawrence Grossberg, Judith Halberstam, Hanno Hardt, Gay Hawkins, Joke Hermes, Su Holmes, Desmond Hui, Fred Inglis, Henry Jenkins, Deborah Jermyn, Ariel Heryanto, Elihu Katz, Senator Rod Kemp (Australian government minister), Youna Kim, Agnes Ku, Richard E. Lee, Jeff Lewis, David Lodge (the novelist), Knut Lundby, Eric Ma, Anna McCarthy, Divya McMillin, Antonio Menendez-Alarcon, Toby Miller, Joe Moran, Chris Norris, John Quiggin, Chris Rojek, Jane Roscoe, Jeffrey Sconce, Lynn Spigel, John Storey, Su Tong, the late Sako Takeshi, Sue Turnbull, Graeme Turner, William Uricchio, José van Dijck, Georgette Wang, Jing Wang, Elizabeth Wilson, Janice Winship, Handel Wright, Wu Jing, Wu Qidi (Chinese Vice-Minister of Education), Emilie Yueh-Yu Yeh, Robert Young and Zhao Bin. As this partial list makes clear, as well as publishing the top ‘hegemons’ we also publish work pointing in new directions, including papers from neighbouring disciplines such as anthropology, area studies, economics, education, feminism, history, literary studies, philosophy, political science, and sociology. We have sought to represent neglected regions, especially Chinese cultural studies, which has grown strongly during the past decade. And for quite a few up-and-coming scholars we’ve been the proud host of their first international publication. The IJCS was first published in 1998, already well into the internet era, but it was print-only at that time. Since then, all content, from volume 1:1 onwards, has been digitised and is available online (although vol 1:2 is unaccountably missing). The publishers, Sage Publications Ltd, London, have steadily added online functionality, so that now libraries can get the journal in various packages, including offering this title among many others in online-only bundles, and individuals can purchase single articles online. Thus, in addition to institutional and individual subscriptions, which remain the core business of the journal, income is derived by the publisher from multi-site licensing, incremental consortial sales income, single- and back-issue sales (print), pay-per-view, and deep back file sales (electronic). So what’s obsolete about it? In that boasting paragraph of mine (above), about what wonderful authors we’ve published, lies one of the seeds of obsolescence. For now that it is available online, ‘users’ (no longer ‘readers’!) can search for what they want and ignore the journal as such altogether. This is presumably how most active researchers experience any journal – they are looking for articles (or less: quotations; data; references) relevant to a given topic, literature review, thesis etc. They encounter a journal online through its ‘content’ rather than its ‘form.’ The latter is irrelevant to them, and may as well not exist. The Cover Some losses are associated with this change. First is the loss of the front cover. Now you, dear reader, scrolling through this article online, might well complain, why all the fuss about covers? Internet-generation journals don’t have covers, so all of the work that goes into them to establish the brand, the identity and even the ‘affect’ of a journal is now, well, obsolete. So let me just remind you of what’s at stake. Editors, designers and publishers all take a good deal of trouble over covers, since they are the point of intersection of editorial, design and marketing priorities. Thus, the IJCS cover contains the only ‘content’ of the journal for which we pay a fee to designers and photographers (usually the publisher pays, but in one case I did). Like any other cover, ours has three main elements: title, colour and image. Thought goes into every detail. Title I won’t say anything about the journal’s title as such, except that it was the result of protracted discussions (I suggested Terra Nullius at one point, but Sage weren’t having any of that). The present concern is with how a title looks on a cover. Our title-typeface is Frutiger. Originally designed by Adrian Frutiger for Charles de Gaulle Airport in Paris, it is suitably international, being used for the corporate identity of the UK National Health Service, Telefónica O2, the Royal Navy, the London School of Economics , the Canadian Broadcasting Corporation, the Conservative Party of Canada, Banco Bradesco of Brazil, the Finnish Defence Forces and on road signs in Switzerland (Wikipedia, "Frutiger"). Frutiger is legible, informal, and reads well in small copy. Sage’s designer and I corresponded on which of the words in our cumbersome name were most important, agreeing that ‘international’ combined with ‘cultural’ is the USP (Unique Selling Point) of the journal, so they should be picked out (in bold small-caps) from the rest of the title, which the designer presented in a variety of Frutiger fonts (regular, italic, and reversed – white on black), presumably to signify the dynamism and diversity of our content. The word ‘studies’ appears on a lozenge-shaped cartouche that is also used as a design element throughout the journal, for bullet points, titles and keywords. Colour We used to change this every two years, but since volume 7 it has stabilised with the distinctive Pantone 247, ‘new fuchsia.’ This colour arose from my own environment at QUT, where it was chosen (by me) for the new Creative Industries Faculty’s academic gowns and hoods, and thence as a detailing colour for the otherwise monochrome Creative Industries Precinct buildings. There’s a lot of it around my office, including on the wall and the furniture. New Fuchsia is – we are frequently told – a somewhat ‘girly’ colour, especially when contrasted with the Business Faculty’s blue or Law’s silver; its similarity to the Girlfriend/Dolly palette does introduce a mild ‘politics of prestige’ element, since it is determinedly pop culture, feminised, and non-canonical. Image Right at the start, the IJCS set out to signal its difference from other journals. At that time, all Sage journals had calligraphic colours – but I was insistent that we needed a photograph (I have ‘form’ in this respect: in 1985 I changed the cover of the Australian Journal of Cultural Studies from a line drawing (albeit by Sydney Nolan) to a photograph; and I co-designed the photo-cover of Cultural Studies in 1987). For IJCS I knew which photo I wanted, and Sage went along with the choice. I explained it in the launch issue’s editorial (Hartley, "Editorial"). That original picture, a goanna on a cattle grid in the outback, by Australian photographer Grant Hobson, lasted ten years. Since volume 11 – in time for our second decade – the goanna has been replaced with a picture by Italian-based photographer Patrick Nicholas, called ‘Reality’ (Hartley, "Cover Narrative"). We have also used two other photos as cover images, once each. They are: Daniel Meadows’s 1974 ‘Karen & Barbara’ (Hartley, "Who"); and a 1962 portrait of Richard Hoggart from the National Portrait Gallery in London (Owen & Hartley 2007). The choice of picture has involved intense – sometimes very tense – negotiations with Sage. Most recently, they were adamant the Daniel Meadows picture, which I wanted to use as the long-term replacement of the goanna, was too ‘English’ and they would not accept it. We exchanged rather sharp words before compromising. There’s no need to rehearse the dispute here; the point is that both sides, publisher and editor, felt that vital interests were at stake in the choice of a cover-image. Was it too obscure; too Australian; too English; too provocative (the current cover features, albeit in the deep background, a TV screen-shot of a topless Italian game-show contestant)? Running Order Beyond the cover, the next obsolete feature of a journal is the running order of articles. Obviously what goes in the journal is contingent upon what has been submitted and what is ready at a given time, so this is a creative role within a very limited context, which is what makes it pleasurable. Out of a limited number of available papers, a choice must be made about which one goes first, what order the other papers should follow, and which ones must be held over to the next issue. The first priority is to choose the lead article: like the ‘first face’ in a fashion show (if you don’t know what I mean by that, see FTV.com. It sets the look, the tone, and the standard for the issue. I always choose articles I like for this slot. It sends a message to the field – look at this! Next comes the running order. We have about six articles per issue. It is important to maintain the IJCS’s international mix, so I check for the country of origin, or failing that (since so many articles come from Anglosphere countries like the USA, UK and Australia), the location of the analysis. Attention also has to be paid to the gender balance among authors, and to the mix of senior and emergent scholars. Sometimes a weak article needs to be ‘hammocked’ between two good ones (these are relative terms – everything published in the IJCS is of a high scholarly standard). And we need to think about disciplinary mix, so as not to let the journal stray too far towards one particular methodological domain. Running order is thus a statement about the field – the disciplinary domain – rather than about an individual paper. It is a proposition about how different voices connect together in some sort of disciplinary syntax. One might even claim that the combination of cover and running order is a last vestige of collegiate collectivism in an era of competitive academic individualism. Now all that matters is the individual paper and author; the ‘currency’ is tenure, promotion and research metrics, not relations among peers. The running order is obsolete. Special Issues An extreme version of running order is the special issue. The IJCS has regularly published these; they are devoted to field-shaping initiatives, as follows: Title Editor(s) Issue Date Radiocracy: Radio, Development and Democracy Amanda Hopkinson, Jo Tacchi 3.2 2000 Television and Cultural Studies Graeme Turner 4.4 2001 Cultural Studies and Education Karl Maton, Handel Wright 5.4 2002 Re-Imagining Communities Sara Ahmed, Anne-Marie Fortier 6.3 2003 The New Economy, Creativity and Consumption John Hartley 7.1 2004 Creative Industries and Innovation in China Michael Keane, John Hartley 9.3 2006 The Uses of Richard Hoggart Sue Owen, John Hartley 10.1 2007 A Cultural History of Celebrity Liz Barry 11.3 2008 Caribbean Media Worlds Anna Pertierra, Heather Horst 12.2 2009 Co-Creative Labour Mark Deuze, John Banks 12.5 2009 It’s obvious that special issues have a place in disciplinary innovation – they can draw attention in a timely manner to new problems, neglected regions, or innovative approaches, and thus they advance the field. They are indispensible. But because of online publication, readers are not held to the ‘project’ of a special issue and can pick and choose whatever they want. And because of the peculiarities of research assessment exercises, editing special issues doesn’t count as research output. The incentive to do them is to that extent reduced, and some universities are quite heavy-handed about letting academics ‘waste’ time on activities that don’t produce ‘metrics.’ The special issue is therefore threatened with obsolescence too. Refereeing In many top-rating journals, the human side of refereeing is becoming obsolete. Increasingly this labour-intensive chore is automated and the labour is technologically outsourced from editors and publishers to authors and referees. You have to log on to some website and follow prompts in order to contribute both papers and the assessment of papers; interactions with editors are minimal. At the IJCS the process is still handled by humans – namely, journal administrator Tina Horton and me. We spend a lot of time checking how papers are faring, from trying to find the right referees through to getting the comments and then the author’s revisions completed in time for a paper to be scheduled into an issue. The volume of email correspondence is considerable. We get to know authors and referees. So we maintain a sense of an interactive and conversational community, albeit by correspondence rather than face to face. Doubtless, sooner or later, there will be a depersonalised Text Management System. But in the meantime we cling to the romantic notion that we are involved in refereeing for the sake of the field, for raising the standard of scholarship, for building a globally dispersed virtual college of cultural studies, and for giving everyone – from unfavoured countries and neglected regions to famous professors in old-money universities – the same chance to get their research published. In fact, these are largely delusional ideals, for as everyone knows, refereeing is part of the political economy of publicly-funded research. It’s about academic credentials, tenure and promotion for the individual, and about measurable research metrics for the academic organisation or funding agency (Hartley, "Death"). The IJCS has no choice but to participate: we do what is required to qualify as a ‘double-blind refereed journal’ because that is the only way to maintain repute, and thence the flow of submissions, not to mention subscriptions, without which there would be no journal. As with journals themselves, which proliferate even as the print form becomes obsolete, so refereeing is burgeoning as a practice. It’s almost an industry, even though the currency is not money but time: part gift-economy; part attention-economy; partly the payment of dues to the suzerain funding agencies. But refereeing is becoming obsolete in the sense of gathering an ‘imagined community’ of people one might expect to know personally around a particular enterprise. The process of dispersal and anonymisation of the field is exacerbated by blind refereeing, which we do because we must. This is suited to a scientific domain of objective knowledge, but everyone knows it’s not quite like that in the ‘new humanities’. The agency and identity of the researcher is often a salient fact in the research. The embedded positionality of the author, their reflexiveness about their own context and room-for-manoeuvre, and the radical contextuality of knowledge itself – these are all more or less axiomatic in cultural studies, but they’re not easily served by ‘double-blind’ refereeing. When refereeing is depersonalised to the extent that is now rife (especially in journals owned by international commercial publishers), it is hard to maintain a sense of contextualised productivity in the knowledge domain, much less a ‘common cause’ to which both author and referee wish to contribute. Even though refereeing can still be seen as altruistic, it is in the service of something much more general (‘scholarship’) and much more particular (‘my career’) than the kind of reviewing that wants to share and improve a particular intellectual enterprise. It is this mid-range altruism – something that might once have been identified as a politics of knowledge – that’s becoming obsolete, along with the printed journals that were the banner and rallying point for the cause. If I were to start a new journal (such as cultural-science.org), I would prefer ‘open refereeing’: uploading papers on an open site, subjecting them to peer-review and criticism, and archiving revised versions once they have received enough votes and comments. In other words I’d like to see refereeing shifted from the ‘supply’ or production side of a journal to the ‘demand’ or readership side. But of course, ‘demand’ for ‘blind’ refereeing doesn’t come from readers; it comes from the funding agencies. The Reading Experience Finally, the experience of reading a journal is obsolete. Two aspects of this seem worthy of note. First, reading is ‘out of time’ – it no longer needs to conform to the rhythms of scholarly publication, which are in any case speeding up. Scholarship is no longer seasonal, as it has been since the Middle Ages (with university terms organised around agricultural and ecclesiastical rhythms). Once you have a paper’s DOI number, you can read it any time, 24/7. It is no longer necessary even to wait for publication. With some journals in our field (e.g. Journalism Studies), assuming your Library subscribes, you can access papers as soon as they’re uploaded on the journal’s website, before the published edition is printed. Soon this will be the norm, just as it is for the top science journals, where timely publication, and thereby the ability to claim first discovery, is the basis of intellectual property rights. The IJCS doesn’t (yet) offer this service, but its frequency is speeding up. It was launched in 1998 with three issues a year. It went quarterly in 2001 and remained a quarterly for eight years. It has recently increased to six issues a year. That too causes changes in the reading experience. The excited ripping open of the package is less of a thrill the more often it arrives. Indeed, how many subscribers will admit that sometimes they don’t even open the envelope? Second, reading is ‘out of place’ – you never have to see the journal in which a paper appears, so you can avoid contact with anything that you haven’t already decided to read. This is more significant than might first appear, because it is affecting journalism in general, not just academic journals. As we move from the broadcast to the broadband era, communicative usage is shifting too, from ‘mass’ communication to customisation. This is a mixed blessing. One of the pleasures of old-style newspapers and the TV news was that you’d come across stories you did not expect to find. Indeed, an important attribute of the industrial form of journalism is its success in getting whole populations to read or watch stories about things they aren’t interested in, or things like wars and crises that they’d rather not know about at all. That historic textual achievement is in jeopardy in the broadband era, because ‘the public’ no longer needs to gather around any particular masthead or bulletin to get their news. With Web 2.0 affordances, you can exercise much more choice over what you attend to. This is great from the point of view of maximising individual choice, but sub-optimal in relation to what I’ve called ‘population-gathering’, especially the gathering of communities of interest around ‘tales of the unexpected’ – novelty or anomalies. Obsolete: Collegiality, Trust and Innovation? The individuation of reading choices may stimulate prejudice, because prejudice (literally, ‘pre-judging’) is built in when you decide only to access news feeds about familiar topics, stories or people in which you’re already interested. That sort of thing may encourage narrow-mindedness. It is certainly an impediment to chance discovery, unplanned juxtaposition, unstructured curiosity and thence, perhaps, to innovation itself. This is a worry for citizenship in general, but it is also an issue for academic ‘knowledge professionals,’ in our ever-narrower disciplinary silos. An in-close specialist focus on one’s own area of expertise need no longer be troubled by the concerns of the person in the next office, never mind the next department. Now, we don’t even have to meet on the page. One of the advantages of whole journals, then, is that each issue encourages ‘macro’ as well as ‘micro’ perspectives, and opens reading up to surprises. This willingness to ‘take things on trust’ describes a ‘we’ community – a community of trust. Trust too is obsolete in these days of performance evaluation. We’re assessed by an anonymous system that’s managed by people we’ll never meet. If the ‘population-gathering’ aspects of print journals are indeed obsolete, this may reduce collegiate trust and fellow-feeling, increase individualist competitiveness, and inhibit innovation. In the face of that prospect, I’m going to keep on thinking about covers, running orders, referees and reading until the role of editor is obsolete too. ReferencesHartley, John. "'Cover Narrative': From Nightmare to Reality." International Journal of Cultural Studies 11.2 (2005): 131-137. ———. "Death of the Book?" Symposium of the National Scholarly Communication Forum & Australian Academy of the Humanities, Sydney Maritime Museum, 2005. 26 Apr. 2009 ‹http://www.humanities.org.au/Resources/Downloads/NSCF/RoundTables1-17/PDF/Hartley.pdf›. ———. "Editorial: With Goanna." International Journal of Cultural Studies 1.1 (1998): 5-10. ———. "'Who Are You Going to Believe – Me or Your Own Eyes?' New Decade; New Directions." International Journal of Cultural Studies 11.1 (2008): 5-14. Houghton, John. "Economics of Scholarly Communication: A Discussion Paper." Center for Strategic Economic Studies, Victoria University, 2000. 26 Apr. 2009 ‹http://www.caul.edu.au/cisc/EconomicsScholarlyCommunication.pdf›. Owen, Sue, and John Hartley, eds. The Uses of Richard Hoggart. International Journal of Cultural Studies (special issue), 10.1 (2007). Policy Perspectives: To Publish and Perish. (Special issue cosponsored by the Association of Research Libraries, Association of American Universities and the Pew Higher Education Roundtable) 7.4 (1998). 26 Apr. 2009 ‹http://www.arl.org/scomm/pew/pewrept.html›. "Scholarly Communication: Crisis and Revolution." University of California Berkeley Library. N.d. 26 Apr. 2009 ‹http://www.lib.berkeley.edu/Collections/crisis.html›. Teute, F. J. "To Publish or Perish: Who Are the Dinosaurs in Scholarly Publishing?" Journal of Scholarly Publishing 32.2 (2001). 26 Apr. 2009 ‹http://www.utpjournals.com/product/jsp/322/perish5.html›."Transforming Scholarly Communication." University of Houston Library. 2005. 26 Apr. 2009 ‹http://info.lib.uh.edu/scomm/transforming.htm›.

Doctor of Philosophy (PhD)
A renewed focus on generalised pollinator systems has inspired a conceptual framework which highlights that spatial and temporal interactions among plants and their assemblage of pollinators can vary across the individual, population, regional and species levels. Pollination is clearly a dynamic interaction, varying in the number and interdependence of participants and the strength of the outcome of the interaction. Therefore, the role of variation in pollination is fundamental for understanding ecological dynamics of plant populations and is a major factor in the evolution and maintenance of generalised and specialised pollination systems. My study centred on these basic concepts by addressing the following questions: (1) How variable are pollinators in a generalised pollination system? To what degree do insect visitation rates and assemblage composition vary spatially among populations and temporally among flowering seasons? (2) How does variation in pollinators affect plant reproductive success? I chose to do this using a model system, Trachymene incisa subsp. incisa (Apiaceae), which is a widespread Australian herbaceous species with simple white flowers grouped into umbels that attract a high diversity of insect visitors. The Apiaceae are considered to be highly generalist in terms of pollination, due to their simple and uniform floral display and easily accessible floral rewards. Three populations of T. incisa located between 70 km and 210 km apart were studied over 2-3 years. The few studies investigating spatial and temporal variation simultaneously over geographic and yearly/seasonal scales indicate that there is a trend for more spatial than temporal variation in pollinators of generalist-pollinated plants. My study showed both spatial and temporal variation in assemblage composition among all populations and variation in insect visitation rates, in the form of a significant population by year interaction. However, removing ants from the analyses to restrict the assemblage to flying insects and the most likely pollinators, resulted in a significant difference in overall visitation rate between years but no difference in assemblage composition between the Myall Lakes and Tomago populations. These results indicate more temporal than spatial variation in the flying insect visitor assemblage of T. incisa. Foraging behaviour provides another source of variation in plant-pollinator interactions. Trachymene incisa exhibits umbels that function as either male or female at any one time and offer different floral rewards in each phase. For successful pollination, pollinators must visit both male and female umbels during a foraging trip. Insects showed both preferences and non-preferences for umbel phases in natural patches where the gender ratio was male biased. In contrast, insects showed no bias in visitation during a foraging trip or in time spent foraging on male and female umbels in experimental arrays where the gender ratio was equal. Pollinator assemblages consisting of a mixture of different pollinator types coupled with temporal variation in the assemblages of populations among years maintains generalisation at the population/local level. In addition, spatial variation in assemblages among populations maintains generalisation at the species level. Fire alters pollination in T. incisa by shifting the flowering season and reducing the abundance of flying insects. Therefore, fire plays an important role in maintaining spatial and temporal variation in this fire-prone system. Although insect pollinators are important in determining the mating opportunities of 90% of flowering plant species worldwide, few studies have looked at the effects of variation in pollinator assemblages on plant reproductive success and mating. In T. incisa, high insect visitation rates do not guarantee high plant reproductive success, indicating that the quality of visit is more important than the rate of visitation. This is shown by comparing the Agnes Banks and Myall Lakes populations in 2003: Agnes Banks received the highest visitation rate from an assemblage dominated by ants but produced the lowest reproductive output, and Myall Lakes received the lowest visitation rate by an assemblage dominated by a native bee and produced the highest seedling emergence. Interestingly, populations with different assemblage composition can produce similar percentage seed set per umbel. However, similar percentage seed set did not result in similar percentage seedling emergence. Differences among years in reproductive output (total seed production) were due to differences in umbel production (reproductive effort) and proportion of umbels with seeds, and not seed set per umbel. Trachymene incisa is self-compatible and suffers weak to intermediate levels of inbreeding depression through early stages of the life cycle when seeds are self-pollinated and biparentally inbred. Floral phenology, in the form of synchronous protandry, plays an important role in avoiding self-pollination within umbels and reducing the chance of geitonogamous pollination between umbels on the same plant. Although pollinators can increase the rate of inbreeding in T. incisa by foraging on both male and female phase umbels on the same plant or closely related plants, most consecutive insect movements were between plants not located adjacent to each other. This indicates that inbreeding is mostly avoided and that T. incisa is a predominantly outcrossing species, although further genetic analyses are required to confirm this hypothesis. A new conceptual understanding has emerged from the key empirical results in the study of this model generalised pollination system. The large differences among populations and between years indicate that populations are not equally serviced by pollinators and are not equally generalist. Insect visitation rates varied significantly throughout the day, highlighting that sampling of pollinators at one time will result in an inaccurate estimate and usually underestimate the degree of generalisation. The visitor assemblage is not equivalent to the pollinator assemblage, although non-pollinating floral visitors are likely to influence the overall effectiveness of the pollinator assemblage. Given the high degree of variation in both the number of pollinator species and number of pollinator types, I have constructed a model which includes the degree of ecological and functional specialisation of a plant species on pollinators and the variation encountered across different levels of plant organisation. This model describes the ecological or current state of plant species and their pollinators, as well as presenting the patterns of generalisation across a range of populations, which is critical for understanding the evolution and maintenance of the system. In-depth examination of pollination systems is required in order to understand the range of strategies utilised by plants and their pollinators, and I advocate a complete floral visitor assemblage approach to future studies in pollination ecology. In particular, future studies should focus on the role of introduced pollinators in altering generalised plant-pollinator systems and the contribution of non-pollinating floral visitors to pollinator assemblage effectiveness. Comparative studies involving plants with highly conserved floral displays, such as those in the genus Trachymene and in the Apiaceae, will be useful for investigating the dynamics of generalised pollination systems across a range of widespread and restricted species.

The decline of floodplain vegetation along the Lower River Murray, South Australia, has evoked recommendations for ‘environmental flows’ to restore and maintain the health of the ecosystem. To assist managers to maximize benefits from environmental flows, this thesis considers the significance of water for germination and recruitment in key floodplain plant species. Three dominant species are considered, including two trees, river red gum (Eucalyptus camaldulensis) and black box (E. largiflorens), and an understorey shrub, tangled lignum (Muehlenbeckia florulenta). The soil seed bank was dominated by terrestrial annual native plants. Among 1400 seedlings, a single river red gum was found, and no black box or lignum, suggesting that these species do not contribute to the persistent soil seed bank and rely instead on aerial seed banks (serotiny). Sampling of the soil seed bank was continued to determine when seed fall might coincide with appropriate soil moisture conditions. Responses of the soil seed bank to varied water regimes were compared to determine requirements for seedling survival. The results indicated that species richness, rapidity of response and survival time were all promoted by sustained soil moisture. Stands of eucalypts in various states of health (from very stressed to very healthy) were monitored to identify seasonal patterns in bud crops, flowering, fresh leaves and volumes of seed released from the aerial seed bank. Distinct seasonal phenological patterns were apparent, and suggested alternating flowering among individual trees (biennial for red gum, bi-annual for black box), producing an annual peak in summer. Peak seed rain occurred in summer (December–March) in healthy trees for both red gum and black box, with light seed rain continuing throughout the year. Seed fall from stressed trees was much reduced. Stressed trees responded after a second watering event, with much more varied and extended annual seed fall patterns. Lignum showed a spring peak in flowering and seed production. There was a prolific response of flowering and seeding to rainfall, but few seedlings survived. Vigorous vegetative growth occurred in existing plants in response to rainfall and watering but no new cloned plants were found during the study. An investigation of chromosomes as a potential tool to appraise the balance between sexual and asexual reproduction in lignum proved inconclusive, although a previous report of octoploidy in lignum was confirmed. Seeds from all three species and lignum cuttings were tested for their responses to varied watering regimes, based on combinations of simulated rain and flood conditions. The optimal soil moisture for continued growth and survival in all seeds and cuttings was 10 25%, with moisture values <10% causing wilting and death. The results also suggested that red gum and black box seeds which germinate in water under flooded conditions need to be stranded onto moist soil at the water’s edge within 10 days, for the seedling to continue to grow. It was also concluded that germination on rain-moistened soil is a key supplementary mechanism for recruitment, particularly between irregular flood events. For greatest benefit, the timing of environmental flows should complement any seasonal rainfall and irregular flooding that may occur. Extension of suitable soil moisture conditions (10-25%) for as long as possible after >5 mm rainfall, or after over-bank flows, would increase chances for survival of seedlings. December is the most likely month for maximal benefit from watering in the Lower Murray Valley, for germination and recruitment, based on regional rainfall and flooding patterns.
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Thesis (Ph.D.) -- University of Adelaide, School of Earth and Environmental Sciences, 2008