11 research outputs found
The Politics and Ethics of Food Localism: An Exploratory Quantitative Inquiry
The local food movement has become a prominent force in the U.S. food market, as represented by the explosive expansion of direct-to-consumer (DTC) marketplaces across the country. Concurrent with the expansion of these DTC marketplaces has been the development of the social ideal of localism: a political and ethical paradigm that valorizes artisanal production and smallness, vilifies globalization, and seeks to recapture a sense of place and community that has been lost under the alienating conditions of capitalism’s gigantism. Supporters of localism understand the movement to be a substantial political and economic threat to global capitalism, and ascribe distinct, counter-hegemonic attributes to localized consumption and production. However, critics argue that localism lacks the political imagination and economic power to meaningfully challenge global capitalism, and that it merely represents an elite form of petite bourgeois consumption. While scholars have debated this issue feverishly, there is a dearth of empirical cases measuring whether or not actual local consumers understand their local consumption within the political and ethical frame of localism, leaving much of the discussion in the realm of esoteric theorizing. This study seeks to uncover whether or not local consumers interpret their local consumption habits within localism’s moral framework by using an original survey instrument to gather primary data, and conducting an exploratory quantitative inquiry
Gaze following in an asocial reptile (Eublepharis macularius)
Gaze following is the ability to utilise information from another's gaze. It is most often seen in a social context or as a reflexive response to interesting external stimuli. Social species can potentially reveal utilisable knowledge about another's future intentions by attending to the target of their gaze. However, in even more fundamental situations, being sensitive to another's gaze can also be useful such as when it can facilitate greater foraging efficiency or lead to earlier predator detection. While gaze sensitivity has been shown to be prevalent in a number of social species, little is currently known about the potential for gaze following in asocial species. The current study investigated whether an asocial reptile, the leopard gecko (Eublepharis macularius), could reliably use the visual indicators of attention to follow the gaze of a conspecific around a barrier. We operated three trial conditions and found subjects (N = 6) responded significantly more to the conspecific demonstrator looking up at a laser stimulus projected onto an occluder during the experimental condition compared to either of two control conditions. The study's findings point toward growing evidence for gaze-following ability in reptiles, who are typically categorised as asocial. Furthermore, our findings support developing comparative social cognition research showing the origins of gaze following and other cognitive behaviours that may be more widely distributed across taxonomic groups than hitherto thought
A significant south-western range extension for the desert mouse (Pseudomys desertor) in Western Australia
The desert mouse (Pseudomys desertor) is one of the most common and widespread native rodent species across arid and semiarid Australia. The species occurs in a variety of habitats and like many arid-zone rodents, its distribution and abundance is known to fluctuate with environmental conditions. Following the capture of a suspected specimen of P. desertor outside the current known range of the species, we used molecular-based methods to confirm the specimen\u27s identification as P. desertor. This note presents a record of the species north of Dalwallinu, Western Australia, which represents a significant range extension for the species of 324 km from the nearest confirmed record
Biological control of the cane toad in Australia: A review
The marine toad Bufo marinus is native to northern South America, parts of Central America and Southern Texas. It was deliberately introduced into Australia's tropical north-east in 1935 in an unsuccessful attempt to control the cane beetle, a damaging insect pest of sugarcane crops. The toads quickly established in the new environment and began to spread. Today, they inhabit most of the Australian tropics and sub-tropics and have reached Western Australia. Models predict that global warming will enable the toads to extend their range further south. They cause severe environmental impacts, as all life stages of B. marinus contain bufadienolides, alkaloid substances toxic to vertebrates, resulting in death of the predators ingesting it. The continental scale of this biological invasion in combination with the remoteness of the areas affected, poses a specific set of challenges to potential control approaches for cane toads. This review covers different biocontrol strategies pursued over the past 8 years, with particular focus on an immunological approach aiming at the disruption of toad metamorphosis. So far, research efforts have failed to produce a tool for large-scale reduction of toad populations. Considerations of future research priorities and efforts are also discussed
Role of hypothalamic-pituitary axis in EGF action on maturation of adrenal gland in fetal rhesus monkey in vivo
Catherine L Coulter; Leanna C Read; Sean J Barry; Alice F Tarantal; Dennis M Styn
Persistence of a potentially rare mammalian genus (Wyulda) provides evidence for areas of evolutionary refugia within the Kimberley, Australia
Understanding the evolutionary and ecological processes that have shaped current patterns of biodiversity is crucial in the planning and implementation of broad scale conservation management. The temporal and spatial pattern of diversity across a landscape can help identify areas that have acted as climatically stable refugia historically, or do so currently. This has important implications for conservation efforts that try to maximise the evolutionary potential of species, as well as maintaining existing biodiversity. Northern Australia has recently reported catastrophic species decline, particularly in mammals, due to a series of threats. Here we apply an integrative approach utilising molecular analyses and spatial modelling to determine whether disjunct populations of a potentially rare, endemic mammal, the scaly-tailed possum (Wyulda squamicaudata) exhibit differentiation associated with biogeographic barriers or a recent decline. Significant but low genetic differentiation between the east and west Kimberley populations was detected. Principal component analyses indicate potential climatic niche differences that could support recent localised adaptations. Climatic reconstructions back to the last glacial maximum (LGM) indicate areas of suitable habitat have substantially shifted through time for W. squamicaudata and suggest multiple areas of refugia across the Kimberley since the LGM. Further comparative research is required to establish a biogeographical framework that will assist in our understanding of processes that have shaped biodiversity in northern Australia and assist in conservation planning
Overview of the SPARC tokamak
© 2020 The Author(s). The SPARC tokamak is a critical next step towards commercial fusion energy. SPARC is designed as a high-field (T), compact (m, m), superconducting, D-T tokamak with the goal of producing fusion gain 2]]> is achievable with conservative physics assumptions () and, with the nominal assumption of, SPARC is projected to attain and MW. SPARC will therefore constitute a unique platform for burning plasma physics research with high density (), high temperature (keV) and high power density () relevant to fusion power plants. SPARC's place in the path to commercial fusion energy, its parameters and the current status of SPARC design work are presented. This work also describes the basis for global performance projections and summarizes some of the physics analysis that is presented in greater detail in the companion articles of this collection
The Dry Season Shuffle: Gorges Provide Refugia for Animal Communities in Tropical Savannah Ecosystems
The conservation status of the world’s reptiles
Effective and targeted conservation action requires detailed information about species, their distribution, systematics and ecology as well as the distribution of threat processes which affect them. Knowledge of reptilian diversity remains surprisingly disparate, and innovative means of gaining rapid insight into the status of reptiles are needed in order to highlight urgent conservation cases and inform environmental policy with appropriate biodiversity information in a timely manner. We present the first ever global analysis of extinction risk in reptiles, based on a random representative sample of 1500 species (16% of all currently known species). To our knowledge, our results provide the first analysis of the global conservation status and distribution patterns of reptiles and the threats affecting them, highlighting conservation priorities and knowledge gaps which need to be addressed urgently to ensure the continued survival of the world’s reptiles. Nearly one in five reptilian species are threatened with extinction, with another one in five species classed as Data Deficient. The proportion of threatened reptile species is highest in freshwater environments, tropical regions and on oceanic islands, while data deficiency was highest in tropical areas, such as Central Africa and Southeast Asia, and among fossorial reptiles. Our results emphasise the need for research attention to be focussed on tropical areas which are experiencing the most dramatic rates of habitat loss, on fossorial reptiles for which there is a chronic lack of data, and on certain taxa such as snakes for which extinction risk may currently be underestimated due to lack of population information. Conservation actions specifically need to mitigate the effects of human-induced habitat loss and harvesting, which are the predominant threats to reptiles