The Symbolic Wolf: A Construal Level Theory Analysis of the Perceptions of Wolves in the United States     

Kristina M. Slagle  Robyn S. Wilson  Jeremy T. Bruskotter  Eric Toman 《社会与自然资源》2019,32(3):322-337

Charismatic wildlife can be difficult to manage due to the controversies they generate among stakeholders, which may be rooted in their symbolic meaning. Using construal-level theory, we coded the images of gray wolves mentioned by respondents to a national survey (n?=?621) and an issue public survey (n?=?447) as symbolic (abstract) or corporeal (concrete). We analyzed the relationship between these representations of wolves and several perceptions that may perpetuate social conflict. Most people thought of wolves abstractly, and abstract thoughts were associated with positive feelings toward wolves and agreement with existence beliefs regarding wolves. Concrete representations were associated with identifying as a gun or property rights advocate, hunter, or farmer/rancher. Given these disparate views of wolves, engaging stakeholders through collaborative processes designed to foster a shared understanding of this species, while addressing the concerns of those groups, could be useful in reducing conflict concerning wolf management.  相似文献   

Geographies of energy transition: the case of high-performing commercial office space in the central business districts of Sydney and Melbourne,Australia     

Chantel Carr  Robyn Dowling 《The Australian geographer》2019,50(1):29-48

As a signatory to the Paris Climate Agreement, Australia committed to reduce emissions significantly by 2030. In a country highly urbanised and dependent on fossil fuels as its primary energy source, one key avenue for meeting these commitments is energy transition in the built environment. Australia has emerged as a leader in the design and construction of high-performance buildings in the premium commercial office sector. In this paper, we address a significant gap in understanding the diverse mechanisms through which building energy transition is being constituted in this sector, focusing on Sydney and Melbourne. In the absence of substantive publicly available data, we draw on mixed methods comprising a database developed around high-performing CBD office buildings and qualitative interviews with a range of sectoral stakeholders. We characterise the building stock in each city, and document five trends constituting energy transitions. We demonstrate that building energy transitions are not only shaped purposefully by dominant governance regimes but also by opportunistic responses to specific material and commercial conditions and legacies in each city. Thus the urban built environment affords significant opportunity for energy transitions, but pathways towards such transitions are necessarily multiple and ultimately shaped by material as well as institutional geographies.  相似文献   

Rapid subglacial streamlined bedform formation at a calving bay margin          下载免费PDF全文

Thomas P. F. Dowling  Per Möller  Matteo Spagnolo 《第四纪科学杂志》2016,31(8):879-892

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U–Pb dating of calcite–aragonite layers in speleothems from hominin sites in South Africa by MC-ICP-MS     

Robyn Pickering  Jan D. Kramers  Tim Partridge  Janos Kodolanyi  Thomas Pettke 《Quaternary Geochronology》2010,5(5):544-558

Speleothems are found in association with hominin fossil-bearing cave deposits in South Africa and can be used to provide valuable chronological constraints. Such material is generally too old for U–Th dating and, although U–Pb geochronology presents a suitable alternative, bulk U concentrations are typically too low (<0.05 μg/g) to provide useful ages. For this reason, we used a simple non-invasive beta-scanner imaging screening step to identify U-rich (≥1 μg/g) domains that could be analyzed with MC-ICP-MS techniques to provide U–Pb ages. We demonstrate the technique using samples from Sterkfontein cave that exhibit infrequent <1 cm-thick layers with U concentrations ≥1 μg/g. Relict aragonite needles are found exclusively in these U-rich layers. We analyzed material from the same flowstone suite as Walker et al. (2006) and obtained a U–Pb age of ～2.3 Ma that agrees well with their estimate of 2.24 ± 0.09 Ma. We also obtained similar U–Pb (0.164 ± 0.026 to 0.200 ± 0.052 Ma) and U–Th (0.148 ± 0.003 Ma) ages for another sample exhibiting U-rich layers. We recognize that open-system behaviour during the partial transformation of aragonite to calcite is a potential problem and argue, on the basis of geochemistry and age consistencies, that recrystallization took place rapidly after speleothem formation and did not significantly affect the U–Pb ages.  相似文献   

Monitoring salmon aquaculture waste: The contribution of First Nations’ rights, knowledge, and practices in British Columbia, Canada     

Robyn Heaslip   《Marine Policy》2008,32(6):988-996

British Columbia's current approach to monitoring salmon aquaculture waste is disconnected from political and legal trends towards the recognition of Aboriginal rights in Canada. Drawing on insights from collaborative monitoring in northern Canada and interviews with 23 Kwakwaka’wakw clam-diggers and cultural specialists (2006–2007), preliminary directions for integrating First Nations’ values, knowledge and stewardship practices into marine environmental monitoring are identified. Kwakwaka’wakw monitoring practices include the use of qualitative individual, community and population scale indicators and the integration of traditional knowledge as baseline data about the healthy conditions of traditional food resources.  相似文献   

Debris flows and their toll on human life: a global analysis of debris-flow fatalities from 1950 to 2011   总被引：1，自引：0，他引：1  

Casey A. Dowling  Paul M. Santi 《Natural Hazards》2014,71(1):203-227

Debris flows cause significant damage and fatalities throughout the world. This study addresses the overall impacts of debris flows on a global scale from 1950 to 2011. Two hundred and thirteen events with 77,779 fatalities have been recorded from academic publications, newspapers, and personal correspondence. Spatial, temporal, and physical characteristics have been documented and evaluated. In addition, multiple socioeconomic indicators have been reviewed and statistically analyzed to evaluate whether vulnerable populations are disproportionately affected by debris flows. This research provides evidence that higher levels of fatalities tend to occur in developing countries, characterized by significant poverty, more corrupt governments, and weaker healthcare systems. The median number of fatalities per recorded deadly debris flow in developing countries is 23, while in advanced countries, this value is only 6 fatalities per flow. The analysis also indicates that the most common trigger for fatal events is extreme precipitation, particularly in the form of large seasonal storms such as cyclones and monsoon storms. Rainfall caused or triggered 143 of the 213 fatal debris flows within the database. However, it is the more uncommon and catastrophic triggers, such as earthquakes and landslide dam bursts, that tend to create debris flows with the highest number of fatalities. These events have a median fatality count >500, while rainfall-induced debris flows have a median fatality rate of only 9 per event.  相似文献   

Depositional and post‐depositional history of warm stage deposits at Knocknacran,Co. Monaghan,Ireland: implications for preservation of Irish last interglacial deposits     

A. P. M. Vaughan  L. A. Dowling  F. J. G. Mitchell  S.‐E. Lauritzen  A. M. McCabe  P. Coxon 《第四纪科学杂志》2004,19(6):577-590

Organic‐rich deposits, uncovered during overburden removal from mantled gypsum karst at Knocknacran opencast gypsum mine, Co. Monaghan, are the best candidate to date for a last interglacial record in Ireland. The two till and organic‐rich deposits (preserved at different quarry elevations) were emplaced on to a Tertiary dolerite surface during high‐energy flood events and subsequently folded and faulted by movement towards sinkholes in underlying gypsum. Uranium–thorium disequilibrium dating suggests that the organic‐rich deposits in the upper section were hydrologically isolated at ca. 41 ka and those in the lower section at ca. 86 ka. Interpretation of the pollen content, although tentative because of the depositional and post‐depositional history of the material, suggests that the organic material originated in a warm stage possibly warmer than the post‐Eemian interstadials. The unusual setting of preservation may indicate that in situ, last interglacial deposits have generally been removed by erosion in Ireland. Copyright © 2004 John Wiley & Sons, Ltd.  相似文献   

Out of place (Gwalia): occasional essays on Australian regional communities and built environments in transition     

Robyn Mayes 《The Australian geographer》2016,47(4):548-550

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Re‐analysis of key evidence in the case for a hemispherically synchronous response to the Younger Dryas climatic event     

Helen Green  Jon Woodhead  John Hellstrom  Robyn Pickering  Russell Drysdale 《第四纪科学杂志》2013,28(2):216-216

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Distinguishing breeding populations of mallards (Anas platyrhynchos) using trace elements     

Bindu Kaimal  Ronald Johnson  Robyn Hannigan 《Journal of Geochemical Exploration》2009

The knowledge of connectivity among breeding and overwintering populations of migratory bird species is critical for the conservation of their habitats. Conventional field work for the tracking of migratory birds involving bird banding often yields poor results due to low recovery rates, or is expensive when satellite tracking methods are used. Intrinsic tools such as genetic markers, stable isotopes, strontium isotopes and trace elements have been successfully used for tracing origins and/or migratory pathways of bird populations. We studied elemental signatures in the tail feathers to group breeding populations and an overwintering population of Mallards (Anas platyrhynchos). Tail feathers from five locations in Canada and the U.S. were analyzed using Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry (LA-ICP-MS). We used 18 elements to discriminate between Mallard populations. Linear discriminant analysis on a selected set of elements demonstrated that 93% of the Mallards could be accurately located back to their predicted locations. Mallard feathers from Arkansas (an important overwintering area), grouped together with any combination of elements as predictors. We predicted the breeding locations of overwintering Mallards from Arkansas. Our results confirm that the LA-ICP-MS technique shows high potential to estimate the origin of migratory animals.  相似文献