On crafting a fisheries co-management arrangement in the estuary of Patos Lagoon (Brazil): opportunities and challenges faced through implementation     

Daniela C. Kalikoski  Theresa Satterfield 《Marine Policy》2004,28(6):742

This paper aims to analyze a fisheries co-management regime in Brazil. The Forum of the Patos Lagoon, a collaborative partnership among communities, governmental and non-governmental organizations, was established to move fisheries management toward a negotiation-style decision processes. We find that while many successes are evident including the delegation of decision power, greater protection of artisanal fisheries, and greater legitimacy assigned the Forum as a decision-making body, several problems remain. These include conflicting institutional arrangements; minimal recognition of local fishers’ interests as concerns rules established; and less than optimal participation of fishers in the Forum. The paper closes with multiple suggestions for improvements of this co-management regime.  相似文献   

Experimental investigation of cephapirin adsorption to quartz filter sands and dune sands     

Jonathan W. Peterson  Theresa A. O’Meara  Michael D. Seymour 《Hydrogeology Journal》2008,16(5):879-892

Batch experiments were performed to investigate cephapirin (a widely used veterinary antibiotic) adsorption on various size sands of low total organic carbon content (0.08–0.36 wt%). In the aqueous concentration range investigated (11–112 μmol/L cephapirin), adsorption to nearly pure quartz filter sands (0.50–3.35 mm diameter) is low. Isotherms are S-shaped and most display a region of minimum adsorption, where decreased adsorption occurs with increasing solution concentration, followed by increased adsorption at higher concentrations. Cephapirin adsorption to quartz-rich, feldspar-bearing dune sands (0.06–0.35 mm diameter), and the smallest quartz filter sand investigated (0.43–0.50 mm), can be described by linear sorption isotherms over the range of concentrations investigated. Distribution coefficients (K _d) range from 0.94 to 3.45 L/kg. No systematic relationship exists between grain size and amount of adsorption for any of the sands investigated. Cephapirin adsorption is positively correlated to the feldspar ratio (K-feldspar/(albite + Ca-plagioclase). Feldspar-ratio normalization of distribution coefficients was more effective than organic carbon normalization at reducing variability of K _d values in the dune sands investigated.  相似文献   

A Comparison of the International Charters on Geographical Education     

Theresa Bourke  Rod Lane 《The Journal of geography》2018,117(4):174-180

This article uses discourse analysis techniques associated with Foucauldian archaeology to examine the two international charters developed by the International Geographical Union Commission on Geographical Education (IGU-CGE), the original one in 1992 and the revised version endorsed in 2016 at the Beijing conference. The examination considers the consultation and development processes before outlining similarities and differences in the messages communicated and how discourses have changed through time. The article concludes with recommendations for the geography education community for the future.  相似文献   

Chandrakanth MG | Water resource economics     

Maike Groeschke  Theresa Frommen 《Environmental Earth Sciences》2016,75(14):1097

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The role of experimental work in hydrological sciences – insights from a community survey     

Theresa Blume  Ilja van Meerveld  Markus Weiler 《水文科学杂志》2017,62(3):334-337

This opinion paper summarizes the results of an online survey on the role of experimental work in the hydrological sciences. The 20 survey questions covered various topics, such as advancements, needs, potentials and challenges in the hydrological sciences, and also touched on the issue of data sharing and data publication. A total of 336 hydrologists with both modelling and experimental backgrounds participated.  相似文献   

Review symposium on: Theresa Enright (2015) The Making of Grand Paris: Metropolitan urbanism in the twenty-first century,Boston, MIT Press     

Theresa Enright 《Urban geography》2018,39(7):1121-1130

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A sequential ensemble prediction system at convection-permitting scales     

Marco Milan  Dirk Schüttemeyer  Theresa Bick  Clemens Simmer 《Meteorology and Atmospheric Physics》2014,123(1-2):17-31

A sequential data assimilation approach (SAM) that incorporates elements of particle filtering with resampling (SIR, Sequential Importance Resampling) is introduced. SAM is applied to the COSMO-DE-EPS, which is an ensemble prediction system for weather forecasting on convection-permitting scales. At the convective scale and beyond, the atmosphere increasingly exhibits non-linear state space evolutions. For an ensemble-based data assimilation system, this requires both an adequate metric that quantifies the distance between the observed atmospheric state and the states simulated by the ensemble members, and a methodology to counteract filter degeneracy, i.e. the collapse of the simulated state space. We, therefore, propose a combination of resampling, which accounts for simulated state space clustering, and nudging. SAM differs from the classical SIR approach mainly in the weighting applied to the ensemble members. By keeping cluster representatives during resampling, the method maintains the potential for non-linear system state development. With three convective case studies, we demonstrate that SAM improves forecast quality compared with the control EPS (EPS without data assimilation) for the first 5–6 h of forecast.  相似文献   

Southeast Asian Migrant Women: Navigating Borders, Negotiating Scales     

Theresa W. Devasahayam  Shirlena Huang  Brenda S.A. Yeoh 《Singapore journal of tropical geography》2004,25(2):135-140

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LETS get real: constraints on the development of Local Exchange Trading Schemes     

Theresa J. Aldridge  & Alan Patterson 《Area》2002,34(4):370-381

Local Exchange Trading Schemes (LETS) are widely promoted as a new tool for local economic development, but until recently the focus has been on their alleged 'potential' rather than the realities of their operation. This paper assesses the practical economic role of LETS by examining the amount of trading conducted, and demonstrates that both the volume of trading and the value of the trades are very low. Drawing on an intensive case study of the first UK LETS created explicitly as part of a local authority's anti–poverty strategy, explanations for the low levels of participation are suggested, and significant structural constraints on the development of LETS are identified.  相似文献   

A Model For the Effects Of Point-Source Emission Of Aerosols On Groundwater Systems     

Theresa J. Brown  John M. Sharp  Jr. 《Hydrogeology Journal》1992,1(3):33-46

The effect of natural aerosols on groundwater chemistry is widely accepted, but the effects of anthropogenic aerosol emissions have received relatively little study. This sensitivity analysis examines the factors most significantly influencing the concentration of aerosols in groundwater. Processes include aerosol dispersion from a point source, deposition on the land surface , transport through the unsaturated zone, and mixing with underlying groundwater. The composite simulation model integrates well-documented models for the atmospheric, unsaturated-zone, and saturated-zone systems; models were chosen which could use the most readily obtainable or estimated input parameters. The analysis indicates that point-source aerosol contaminants possess a significant potential to affect aquifer water quality adversely. Furthermore, aerosols may have an impact on background concentrations on a regional scale. The key parameters are the source concentration, net infiltration, transport-velocity distributions in the unsaturated zone, and depth of the water table. We surmise that instances where groundwater contaminant dispersal greatly exceeds predicted travel times could be the result of aerosol contamination and not underestimations of seepage velocities or hydrodynamic dispersion. Aerosol contamination of groundwater should not be dismissed a priori. Résumé: L'impact des aérosols naturels sur la chimie des eaux souterraines est bien connu; mais celui provoqué par les émissions d'aérosols produits par l'homme a été bien peu étudié. Dans ce travail, les facteurs qui influencent de manière significative la concentration en aérosols des eaux souterraines ont été examinés en détail. Les processus en cause comprennent la dispersion de l'aérosol à partir d'une source ponctuelle, le dépôt à la surface du sol, le transport dans la zone non saturée et le mélange avec l'eau de la nappe. Le modèle composite de simulation intègre des modèles bien connu pour l'atmosphère, la zone non saturée et la zone saturée; les modèles choisis sont ceux qui utilisent les paramètres d'entrée les plus faciles à obtenir ou à estimer. L'analyse indique que les contaminants produits par une source ponctuelle peuvent affecter significativement de façon défavorable la qualité des eaux souterraines. En outre, les aérosols peuvent avoir un impact sur les concentrations originelles à l'échelle régionale. Les paramètres-clés sont la concentration à la source, l'infiltration nette et la profondeur de la surface piézométrique. Nous soupçonnons que dans les cas où la dispersion de polluants dans un aquifère dépasse largement les temps de transit prédits par les modèles, il se pourrait que cela soit dû à une contamination par des aérosols et non à une surestimation des vitesses d'infiltration ou de la dispersion hydrodynamique. La contamination des eaux souterraines par des aérosols ne doit pas être rejectée a priori.  相似文献