ORCID Profile
0000-0002-0191-9364
Current Organisations
National Institute of Standards and Technology
,
University of Delaware
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Environmental Science and Management | Conservation and Biodiversity | Social and Community Psychology
Consumption Patterns, Population Issues and the Environment | Farmland, Arable Cropland and Permanent Cropland Flora, Fauna and Biodiversity |
Publisher: Wiley
Date: 28-04-2020
DOI: 10.1111/CONL.12721
Publisher: Resilience Alliance, Inc.
Date: 2018
Publisher: MDPI AG
Date: 13-08-2018
DOI: 10.3390/LAND7030096
Abstract: There is a growing recognition of the contribution that privately-owned land makes to conservation efforts, and governments are increasingly counting privately protected areas (PPAs) towards their international conservation commitments. The public availability of spatial data on countries’ conservation estates is important for broad-scale conservation planning and monitoring and for evaluating progress towards targets. Yet there has been limited consideration of how PPA data is reported to national and international protected area databases, particularly whether such reporting is transparent and fair (i.e., equitable) to the landholders involved. Here we consider PPA reporting procedures from three countries with high numbers of PPAs—Australia, South Africa, and the United States—illustrating the ersity within and between countries regarding what data is reported and the transparency with which it is reported. Noting a potential tension between landholder preferences for privacy and security of their property information and the benefit of sharing this information for broader conservation efforts, we identify the need to consider equity in PPA reporting processes. Unpacking potential considerations and tensions into distributional, procedural, and recognitional dimensions of equity, we propose a series of broad principles to foster transparent and fair reporting. Our approach for navigating the complexity and context-dependency of equity considerations will help strengthen PPA reporting and facilitate the transparent integration of PPAs into broader conservation efforts.
Publisher: Wiley
Date: 10-01-2022
DOI: 10.1111/COBI.13845
Abstract: Bio ersity loss is driven by human behavior, but there is uncertainty about the effectiveness of behavior-change programs in delivering benefits to bio ersity. To demonstrate their value, the bio ersity benefits and cost-effectiveness of behavior changes that directly or indirectly affect bio ersity need to be quantified. We adapted a structured decision-making prioritization tool to determine the potential bio ersity benefits of behavior changes. As a case study, we examined two hypothetical behavior-change programs--wildlife gardening and cat containment--by asking experts to consider the behaviors associated with these programs that directly and indirectly affect bio ersity. We assessed benefits to southern brown bandicoot (Isoodon obesulus) and superb fairy-wren (Malurus cyaneus) by eliciting from experts estimates of the probability of each species persisting in the landscape given a range of behavior-change scenarios in which uptake of the behaviors varied. We then compared these estimates to a business-as-usual scenario to determine the relative bio ersity benefit and cost-effectiveness of each scenario. Experts projected that the behavior-change programs would benefit bio ersity and that benefits would rise with increasing uptake of the target behaviors. Bio ersity benefits were also predicted to accrue through indirect behaviors, although experts disagreed about the magnitude of additional benefit provided. Scenarios that combined the two behavior-change programs were estimated to provide the greatest benefits to species and be most cost-effective. Our method could be used in other contexts and potentially at different scales and advances the use of prioritization tools to guide conservation behavior-change programs.
Publisher: Wiley
Date: 23-07-2020
DOI: 10.1111/CSP2.249
Publisher: Elsevier BV
Date: 09-2019
Publisher: Elsevier BV
Date: 08-2019
Publisher: Wiley
Date: 12-11-2018
DOI: 10.1111/COBI.13106
Publisher: American Chemical Society (ACS)
Date: 19-03-2013
DOI: 10.1021/JA3125959
Abstract: Atomistic molecular dynamics (MD) simulations were carried out to investigate the local dynamics of polyelectrolyte dendrimers dissolved in deuterium oxide (D2O) and its dependence on molecular charge. Enhanced segmental dynamics upon increase in molecular charge is observed, consistent with quasielastic neutron scattering (QENS) measurements. A strong coupling between the intradendrimer local hydration level and segmental dynamics is also revealed. Compelling evidence shows these findings originate from the electrostatic interaction between the hydrocarbon components of a dendrimer and the invasive water. This combined study provides fundamental insight into the dynamics of charged polyelectrolytes and the solvating water molecules.
Publisher: AIP Publishing
Date: 09-08-2012
DOI: 10.1063/1.4742190
Abstract: Atomistic molecular dynamics (MD) simulations and contrast variation small angle neutron scattering (SANS) have been combined to investigate the Generation-5 polyelectrolyte polyamidoamine starburst dendrimer. This work reveals the dendrimer conformational dependence on counterion association at different levels of molecular charge. The accuracy of the simulations is verified through satisfactory comparison between modeled results, such as excess intra-dendrimer scattering length density distribution and hydration level, and their experimental counterparts. While the counterion distributions are not directly measureable with SANS, the spatial distribution of the counterions and their dendrimer association are extracted from the validated MD equilibrium trajectories. It is found that the conformation of the charged dendrimer is strongly dependent on the counterion association. Sensitivity of the distribution of counterions around charged amines to the counterion valency is qualitatively explained by adopting Langmuir adsorption theory. Moreover, via extending the concept of electrical double layer for compact charged colloids, we define an effective radius of a charged dendrimer including the spatial distribution of counterions in its vicinity. Within the same framework, the correlation between the strength of intra-dendrimer electrostatic repulsion and the counterion valency and dynamics is also addressed.
Publisher: Elsevier BV
Date: 04-2023
Publisher: Wiley
Date: 22-02-2022
DOI: 10.1111/CSP2.12660
Abstract: Globally, privately protected area (PPA) programs are increasing in size and number. Participating in a PPA program can be fiscally challenging for landholders (e.g., enrollment costs potential reduction in land value opportunity costs costs of ongoing management). Government and nongovernmental organizations often offer financial incentives to landholders, in addition to nonfinancial incentives, to encourage program enrollment and ongoing bio ersity management. In Australia, where conservation covenanting programs have been ongoing for several decades, a ersity of financial incentives is available to landholders. We surveyed 527 conservation covenantors from three states in southeast Australia to investigate the uptake, use, experience and preference for financial incentives. Less than half of covenantors received a financial incentive to enroll, but most applied for some form of incentive after enrollment, predominantly to help with management costs. Covenantors identified challenges in accessing incentives, such as being unaware of funding opportunities or experiencing confusing application processes. We found land rates rebates to be the preferred financial incentive among covenantors, in part due to the perception that covenantors should not have to pay full rates on covenanted land. Our results suggest that while covenantors do not participate in PPA programs for financial incentives, effectively and efficiently deploying financial incentives can reduce the financial burdens of PPA management, potentially increasing the effectiveness of conservation efforts.
Publisher: Elsevier BV
Date: 2019
Publisher: AIP Publishing
Date: 11-04-2012
DOI: 10.1063/1.3697479
Abstract: Based on atomistic molecular dynamics (MD) simulations, the small angle neutron scattering (SANS) intensity behavior of a single generation-4 polyelectrolyte polyamidoamine starburst dendrimer is investigated at different levels of molecular protonation. The SANS form factor, P(Q), and Debye autocorrelation function, γ(r), are calculated from the equilibrium MD trajectory based on a mathematical approach proposed in this work. The consistency found in comparison against previously published experimental findings (W.-R. Chen, L. Porcar, Y. Liu, P. D. Butler, and L. J. Magid, Macromolecules 40, 5887 (2007)) leads to a link between the neutron scattering experiment and MD computation, and fresh perspectives. The simulations enable scattering calculations of not only the hydrocarbons but also the contribution from the scattering length density fluctuations caused by structured, confined water within the dendrimer. Based on our computational results, we explore the validity of using radius of gyration RG for microstructure characterization of a polyelectrolyte dendrimer from the scattering perspective.
Publisher: Resilience Alliance, Inc.
Date: 2017
Publisher: Springer Science and Business Media LLC
Date: 22-08-2023
Publisher: Wiley
Date: 13-03-2017
Publisher: Wiley
Date: 18-01-2015
DOI: 10.1111/CONL.12154
Location: United States of America
Location: United States of America
Start Date: 12-2020
End Date: 12-2023
Amount: $372,543.00
Funder: Australian Research Council
View Funded Activity