Developing multimetric indices for monitoring ecological restoration progress in salt marshes     

Langman OC  Hale JA  Cormack CD  Risk MJ  Madon SP 《Marine pollution bulletin》2012,64(4):820-835

Effective tools for monitoring the status of ecological restoration projects are critical for the management of restoration programs. Such tools must integrate disparate data comprised of multiple variables that describe restoration status, including the condition of environmental stressors, landscape connectivity, ecosystem resilience, and ecological structure and function, while communicating these concepts effectively to a wide range of stakeholders. In this paper we describe the process of constructing multimetric indices (MMIs) for monitoring restoration status for restoration projects currently underway on the eastern coast of Saudi Arabia. During this process, an initial suite of measurements is filtered for response and sensitivity to ecosystem stressors, eliminating measurements that provide little information and reducing future monitoring efforts. The retained measurements are rescaled into comparable domain metrics and assembled into MMIs. The MMIs are presented in terms of established restoration theories, including restoration trajectory and restoration endpoint targets.  相似文献   

Benchmarking sustainability in cities: The role of indicators and future scenarios     

Christopher T. Boyko  Mark R. Gaterell  Austin R.G. Barber  Julie Brown  John R. Bryson  David Butler  Silvio Caputo  Maria Caserio  Richard Coles  Rachel Cooper  Gemma Davies  Raziyeh Farmani  James Hale  A. Chantal Hales  C. Nicholas Hewitt  Dexter V.L. Hunt  Lubo Jankovic  Ian Jefferson  Joanne M. Leach  D. Rachel Lombardi  Christopher D.F. Rogers 《Global Environmental Change》2012,22(1):245-254

Scenarios are a useful tool to help think about and visualise the future and, as such, are utilised by many policymakers and practitioners. Future scenarios have not been used to explore the urban context in much depth, yet have the potential to provide valuable insights into the robustness of decisions being made today in the name of sustainability. As part of a major research project entitled Urban Futures, a toolkit has been developed in the UK to facilitate the use of scenarios in any urban context and at any scale relevant to that context. The toolkit comprises two key components, namely, (i) a series of indicators comprising both generic and topic area-specific indicators (e.g., air quality, biodiversity, density, water) that measure sustainability performance and (ii) a list of characteristics (i.e., 1–2-sentence statements about a feature, issue or small set of issues) that describe four future scenarios. In combination, these two components enable us to measure the performance of any given sustainability indicator, and establish the relative sensitivity or vulnerability of that indicator to the different future scenarios. An important aspect of the methodology underpinning the toolkit is that it is flexible enough to incorporate new scenarios, characteristics and indicators, thereby allowing the long-term performance of our urban environments to be considered in the broadest possible sense.  相似文献   

Inner radii of dust shells and stellar diameters obtained by an infrared stellar interferometer at 11 micron wavelength     

W. C. Danchi  M. Bester  L. J. Greenhill  C. G. Degiacomi  N. Geis  D. Hale  B. Lopez  C. H. Townes 《Astrophysics and Space Science》1995,224(1-2):447-448

Visibility data and analyses are discussed for 16 late-type stars observed with the Infrared Spatial Interferometer (ISI) of the University of California, Berkeley.  相似文献   

Southern Hemisphere westerly wind influence on southern New Zealand hydrology during the Lateglacial and Holocene          下载免费PDF全文

Harris J. Anderson  Christopher M. Moy  Marcus J. Vandergoes  Jonathan E. Nichols  Christina R. Riesselman  Robert Van Hale 《第四纪科学杂志》2018,33(6):689-701

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Preface     

Barbara N. Hale   《Atmospheric Research》2003,65(3-4)

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A Hybrid Fuzzy Weights-of-Evidence Model for Mineral Potential Mapping   总被引：1，自引：0，他引：1  

Alok Porwal  Emmanuel John M. Carranza  Martin Hale 《Natural Resources Research》2006,15(1):1-14

This paper describes a hybrid fuzzy weights-of-evidence (WofE) model for mineral potential mapping that generates fuzzy predictor patterns based on (a) knowledge-based fuzzy membership values and (b) data-based conditional probabilities. The fuzzy membership values are calculated using a knowledge-driven logistic membership function, which provides a framework for treating systemic uncertainty and also facilitates the use of multiclass predictor maps in the modeling procedure. The fuzzy predictor patterns are combined using Bayes’ rule in a log-linear form (under an assumption of conditional independence) to update the prior probability of target deposit-type occurrence in every unique combination of predictor patterns. The hybrid fuzzy WofE model is applied to a regional-scale mapping of base-metal deposit potential in the south-central part of the Aravalli metallogenic province (western India). The output map of fuzzy posterior probabilities of base-metal deposit occurrence is classified subsequently to delineate zones with high-favorability, moderate favorability, and low-favorability for occurrence of base-metal deposits. An analysis of the favorability map indicates (a) significant improvement of probability of base-metal deposit occurrence in the high-favorability and moderate-favorability zones and (b) significant deterioration of probability of base-metal deposit occurrence in the low-favorability zones. The results demonstrate usefulness of the hybrid fuzzy WofE model in representation and in integration of evidential features to map relative potential for mineral deposit occurrence.  相似文献   

Studying the influence of a solid shell on lava dome growth and evolution using the level set method     

Laurent Bourgouin  Hans-Bernd Mühlhaus  Alina Jane Hale  Antonin Arsac 《Geophysical Journal International》2007,170(3):1431-1438

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Social and Geographic Contexts of Water Concerns in Utah     

Courtney G. Flint  Xin Dai  Douglas Jackson-Smith  Joanna Endter-Wada  Sara K. Yeo  Rebecca Hale 《社会与自然资源》2017,30(8):885-902

Public concerns about water issues are key considerations in responding to changing hydrologic conditions. Literature is mixed on the social profiles associated with resource-related risks. Using data from a household survey, we compare concerns about water shortage, climate change impacts on water supply, poor water quality, and flooding. We assess the combined influence of social and locational factors on each concern and variations across three valleys in northern Utah. Generalized linear mixed modeling is used, given the ordinal nature of most variables. Water shortage was the greatest concern, and female, older, nonwhite, and recreationally active respondents were generally more concerned about water issues than their counterparts. Education, income, and religious identity presented more complicated relationships with water concerns, with significant interaction effects with valley geography. This study has implications for improving public involvement in risk management and engendering support for future water policy and planning strategies to address these risks.  相似文献   

Editorial     

M. Faisal  A. Elskus  S. M. R. C. Hale  McLaughlin 《Marine environmental research》2000,50(1-5)

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Petrography, mineralogy and geochemistry of the Zarshuran Carlin-like gold deposit, northwest Iran   总被引：1，自引：0，他引：1  

H. H. Asadi  J. H. L. Voncken  R. A. Kühnel  M. Hale 《Mineralium Deposita》2000,35(7):656-671

Gold mineralisation at Zarshuran, northwestern Iran, is hosted by Precambrian carbonate and black shale formations which have been intruded by a weakly mineralised granitoid. Granitoid intrusion fractured the sedimentary rocks, thereby improving conditions for hydrothermal alteration and mineralisation. Silicification is the principal hydrothermal alteration along with decalcification and argillisation. Three hydrothermal sulphide mineral assemblages have been identified: an early assemblage of pyrrhotite, pyrite and chalcopyrite; then widespread base metal sulphides, lead-sulphosalts and zoned euhedral arsenical pyrite; and finally late network arsenical pyrite, massive and colloform arsenical pyrite, colloform sphalerite, coloradoite, and arsenic–antimony–mercury–thallium-bearing sulphides including orpiment, realgar, stibnite, getchellite, cinnabar, lorandite and a Tl-mineral, probably christite. Most of the gold at Zarshuran is detectable only by quantitative electron microprobe and bulk chemical analyses. Gold occurs mainly in arsenical pyrite and colloform sphalerite as solid solution or as nanometre-sized native gold. Metallic gold is found rarely in hydrothermal quartz and orpiment. Pure microcrystalline orpiment, carbon-rich shale, silicified shale with visible pyrite grains and arsenic minerals contain the highest concentrations of gold. In many ways Zarshuran appears to be similar to the classic Carlin-type sediment-hosted disseminated gold deposits. However, relatively high concentrations of tellurium at Zarshuran, evidenced by the occurrence of coloradoite (HgTe), imply a greater magmatic contribution in the mineralising hydrothermal solutions than is typical of Carlin-type gold deposits. Received: 13 May 1999 / Accepted: 2 February 2000  相似文献