Practitioner insights as a means of setting a context for conservation

A key obstacle to conservation success is the tendency of conservation professionals to tackle each challenge individually rather than collectively and in context. We sought to prioritize barriers to conservation previously described in the conservation literature. We undertook an online survey of 154 practitioners from over 70 countries to ascertain the most important barriers to conservation they faced. We used statistical analyses to identify the key impediments to conservation success and to examine whether these were affected by organizational attributes. Twenty-one barriers were identified. The importance ascribed to those was influenced by continent of operation and organization size, but not by organization age or autonomy (from larger parent organizations). We found the most important barriers to consider when undertaking conservation action were wider issues (e.g., population growth, consumerism, favoring development, and industrial-scale activity), operating environment (e.g., lack of political will, ineffective law enforcement, weak governments, corruption, safety and security), community attributes (e.g., dynamics, conflicts, and education levels), and the way conservation is undertaken (overconfidence, lack of funding, and externally set agendas). However, we advise against applying a one-size-fits-all approach. We propose that conservationists account for the complex socioecological systems they operate in if they are to achieve success.     

Aggregation and social interaction in garter snakes (Thamnophis sirtalis sirtalis)

Behavioral Ecology and Sociobiology - Shared behavioural traits result from the interaction of two or more individuals, making it difficult to discern which individual is in control of the...     

STORM DISCHARGE,LOADS, AND AVERAGE CONCENTRATIONS IN NORTHWEST OHIO RIVERS, 1975–19951

ABSTRACT: A computerized technique was developed to identify storm runoff episodes and calculate storm discharges, storm loads, and storm average concentrations for each event in datasets with up to 10,000 records. This technique was applied to four watersheds within the Lake Erie drainage basin and identified between 160 and 250 runoff events in each. Storm event loads and storm event mean concentrations were calculated for each runoff event for suspended solids, total phosphorus, soluble reactive phosphorus, nitrate, and total Kjeldahl nitrogen. The basic characteristics of the resulting data are described, as are systematic differences as a function of watershed size, seasonal differences, and trends over time. Many of the results of this study reflect the importance of nonpoint processes and improvements in agricultural best management practices in these watersheds.     

STORMFLOW SIMULATION USING A GEOGRAPHICAL INFORMATION SYSTEM WITH A DISTRIBUTED APPROACH1

ABSTRACT: With the increasing availability of digital and remotely sensed data such as land use, soil texture, and digital elevation models (DEMs), geographic information systems (GIS) have become an indispensable tool in preprocessing data sets for watershed hydrologic modeling and post processing simulation results. However, model inputs and outputs must be transferred between the model and the GIS. These transfers can be greatly simplified by incorporating the model itself into the GIS environment. To this end, a simple hydrologic model, which incorporates the curve number method of rainfall‐runoff partitioning, the ground‐water base‐flow routine, and the Muskingum flow routing procedure, was implemented on the GIS. The model interfaces directly with stream network, flow direction, and watershed boundary data generated using standard GIS terrain analysis tools; and while the model is running, various data layers may be viewed at each time step using the full display capabilities. The terrain analysis tools were first used to delineate the drainage basins and stream networks for the Susquehanna River. Then the model was used to simulate the hydrologic response of the Upper West Branch of the Susquehanna to two different storms. The simulated streamflow hydrographs compare well with the observed hydrographs at the basin outlet.     

Determination of fumonisins in milk

Abstract

Fumonisin B₁ (FB₁) and fumonisin B₂ (FB₂) were determined in milk by liquid chromatography (LC) following immunoaffinity column cleanup. Recoveries from milk spiked with 5–50 ng each fumonisin/ml averaged 79–109%. The aminopentol hydrolysis product of FB₁ (AP₁) was determined by LC after cleanup on a C₁₈solid phase phase extraction column; mean recoveries were 69–83% at spiking levels of 50–100 ng AP₁/ml milk. Detection limits were of the order 3–7 ng/ml for FB₁ and FB₂, and 20–25 ng/ml for AP₁. A stability study showed no losses of FB₁ and FB₂ in milk under conditions of freezing, refrigeration and boiling. A transmission study using four cows dosed with pure FB₁, either orally (1.0 and 5.0 mg FB₁/kg b.w.) or by i.v. injection (0.05 and 0.20 mg FB₁/kg b.w.) showed no detectable residues of FB, or AP₁ in the milk, with or without hydroiytic treatment with β‐glucuronidase/sulfatase to liberate any conjugates.     

Constructing sustainability science: emerging perspectives and research trajectories

Over the last decade, sustainability science has emerged as an interdisciplinary and innovative field attempting to conduct problem-driven research that links knowledge to action. As the institutional dimensions of sustainability science continue to gain momentum, this article provides an analysis of emerging research agendas in sustainability science and an opportunity for reflection on future pathways for the field. Based on in-depth interviews with leading researchers in the field and a content analysis of the relevant literature, this article examines how sustainability scientists bound the social, political and normative dimensions of sustainability as they construct research agendas and look to link knowledge to social action. Many scientists position sustainability science as serving universal values related to sustainability and providing knowledge that is crucial to societal decision-making. The implications of these findings are discussed with an eye towards creating a space for a more democratic and reflexive research agenda for sustainability.     

Social equity in urban resilience planning

ABSTRACT

A growing number of cities are incorporating resilience into their plans and policies to respond to shocks, stresses, and uncertainties. While some scholars advocate for the potential of resilience research and practice, others argue that it promotes an inherently conservative and neoliberal agenda, prevents systemic transformations, and pays insufficient attention to power, politics, and justice. Notably, critics of the urban resilience agenda argue that policies fail to adequately address social equity issues. This study seeks to inform these debates by providing a cross-sectional analysis of how issues of equity are incorporated into urban resilience planning. We develop a tripartite framework of equity that includes distributional, recognitional, and procedural dimensions and use it to analyse the goals, priorities, and strategies of formal resilience plans created by member cities of the Rockefeller Foundation’s 100 Resilient Cities programme. Our analysis reveals considerable variation in the extent to which cities focus on equity, implying that resilience may be more nuanced than some critics suggest. There are, however, clear areas for improvement. Dominant conceptions of equity are generally tied to a distributional orientation, with less focus on the recognitional and procedural dimensions. We hope our conceptual framework and lessons learned from this study can inform more just resilience planning and provide a foundation for future research on the equity implications of resilience.     

Phosphorus losses in simulated rainfall runoff from manured soils of Alberta

Manure applied to agricultural land at rates that exceed annual crop nutrient requirements can be a source of phosphorus in runoff. Manure incorporation is often recommended to reduce phosphorus losses in runoff. A small plot rainfall simulation study was conducted at three sites in Alberta to evaluate the effects of manure rate and incorporation on phosphorus losses. Treatments consisted of three solid beef cattle manure application rates (50, 100, and 200 kg ha(-1) total phosphorus), an unmanured control, and two incorporation methods (nonincorporated and incorporated with one pass of a double disk). Simulated rain was applied to soils with freshly applied and residual (1 yr after application) manure at 70 mm h(-1) to produce 30 min of runoff. Soil test phosphorus (STP), total phosphorus (TP), and dissolved reactive phosphorus (DRP) concentrations in runoff increased with manure rate for fresh and residual manure. Initial abstraction and runoff volumes did not change with manure rate. Initial abstraction, runoff volumes, and phosphorus concentrations did not change with manure incorporation at Lacombe and Wilson, but initial abstraction volumes increased and runoff volumes and phosphorus concentrations decreased with incorporation of fresh manure at Beaverlodge. Phosphorus losses in runoff were directly related to phosphorus additions. Extraction coefficients (slopes of the regression lines) for the linear relationships between residual manure STP and phosphorus in runoff were 0.007 to 0.015 for runoff TP and 0.006 to 0.013 for runoff DRP. While incorporation of manure with a double disk had no significant effect on phosphorus losses in runoff from manure-amended soils 1 yr after application, incorporation of manure is still recommended to control nitrogen losses, improve crop nutrient uptake, and potentially reduce odor concerns.     

The allocation of prestigious positions in organizational science: accumulative advantage,sponsored mobility,and contest mobility

More than 200 freshly minted doctoral graduates enter the field of organization science every year. A non‐trivial number of existing faculty members move from one university to another every year, while other organization science faculty leave academia to enter retirement, consulting, or industry. Despite the importance of this large, complex system of entries and exits, few attempts have been made to explicitly understand how the system works. Drawing upon sociology of science and careers research, we studied the underlying form of the position allocation system by focusing on the relative importance of research success and prior affiliations as antecedents of movement and stability across positions. We used three theoretical models: accumulative advantage, sponsored mobility, and contest mobility. Tracking hundreds of faculty members for 16 years post doctorate, we find a downward cascading of affiliation prestige over time that affects people more dramatically and quickly than we expected, especially women. Accumulative advantage, the most predictive of our models, does help to maintain relative but not absolute prestige, at least until its effects wane in later years of the career. These findings are relevant to scholars interested in the sociology of science, organization scholars interested in the underlying dynamics of their discipline, and individuals making career choices. Copyright © 2005 John Wiley & Sons, Ltd.     

Water resource management and climate change adaptation: a holistic and multiple criteria perspective

Anthropogenic climate change is likely to significantly increase human exposure to droughts and floods. It will also alter seasonal patterns of water availability and affect water quality and the health of aquatic ecosystems with various implications for social and economic wellbeing. Policy development for water resource adaptation needs to allow for a holistic and transparent analysis of the probable consequences of policy options for the wide variety of water uses and users, and the existing ecosystem services associated with any stream basin. This paper puts forward an innovative methodological framework for planning development-compatible climate policies drawing on multi-criteria decision analysis and an implicit risk-management approach to the economics of climate change. Its objectives are to describe how the generic methodology could be tailored for analysis of long-range water planning and policy options in developing countries, and to describe the place of climate change considerations in water governance and planning processes. An experimental thought-exercise applying the methodology to water policy development in Yemen provides further insights on the complexity of water adaptation planning. It also highlights the value of conducting sensitivity analysis to explore the implications of multiple climate scenarios, and the importance of accounting for policy portfolios rather than individual policy options. Rather than constituting a tool that can generate clear measures of optimal solutions in the context of adaptation to uncertain climate futures, we find that this approach is best suited to supporting comprehensive and inclusive planning processes, where the focus is on finding socially acceptable paths forward.