An ecological assessment of the trophic structure of York Pond in Coos County Milan, NH

We examined the physical, chemical and biological properties of York Pond in Coos County Milan, NH as a part of a 6-lake study. Chemical and physical characteristics measured included: total phosphorus and nitrogen, turbidity, light profiles with Secchi disk depth, specific conductivity, oxidation-reduction potential, dissolved oxygen, and temperature. Biological analysis included: phytoplankton percentage, chlorophyll a fluorescence, zooplankton abundance and zooplankton biomass. York Pond had eutrophic levels of several parameters in the epilimnion, including: chlorophyll a (39.4 + 1.04 µgL-1), total phosphorus (46.3 + 0.67 µgL-1), total nitrogen (843.3 + 18.48 µgL-1), turbidity (22.0 + 0.09 NTU), and percentage of cyanobacteria at (42.0 + 9.60 %). Cyanobacteria were even more dominant deeper in the water column, making up more than 70% of the net phytoplankton. The primary source of nutrient loading appears to be effluent from the fish raceways at the Berlin fish hatchery. Eutrophication has shifted the phytoplankton of York Pond toward cyanobacteria, with Anabaena as the dominant genus in the fall. The could have impacts across multiple trophic levels. Comparisons of York Pond to other study lakes suggest that Secchi disk, chlorophyll a and total phosphorus may be useful predictors of cyanobacteria dominance in New England lakes

Risk management, player welfare and privacy : player development managers and dilemmas for employee relations in Australian football league clubs

This paper reports on one aspect of a research project that was funded by the Australian Football League (AFL) to explore the emergence and evolution of a ‘professional identity’ for AFL footballers. The research was informed by Foucault\u27s later work on the care of the Self to focus on the ways in which player identities are governed by coaches, club officials, and the AFL Commission/Executive; and the manner in which players conduct themselves in ways that can be characterised as professional - or not. The paper explores the roles of Player Development Managers (PDMs) in emerging processes of risk and player management. These roles increasingly involve PDMs in risk management practices and processes that can be seen as intrusive in players’ lives. These risk management processes raise a number of concerns about player privacy and the rights of Clubs to know what their employees are up to away from the workplace

Action learning : co-creating value from collaborative sustainable projects

This article reports on the specific role that action learning plays in the promotion of sustainability and innovation in the Local Government sector. The study focuses on one organisation and the efforts of a senior manager to enact change. The senior manager utilized his participation in an MBA programme to bring the classroom learning into his business. As a consequence of the requirements of the programme and also the desire of the senior manager, he was able to instigate a change programme, which delivered measurable outcomes and had financial and cultural impact. This case study illustrates the favourable advantages of using action learning as an intervention approach by HEI’s in driving sustainable innovation in the Local Government sectorFinal Published versio

On the measurement of ecological novelty: scale-eating pupfish are separated by 168 my from other scale-eating fishes.

The colonization of new adaptive zones is widely recognized as one of the hallmarks of adaptive radiation. However, the adoption of novel resources during this process is rarely distinguished from phenotypic change because morphology is a common proxy for ecology. How can we quantify ecological novelty independent of phenotype? Our study is split into two parts: we first document a remarkable example of ecological novelty, scale-eating (lepidophagy), within a rapidly-evolving adaptive radiation of Cyprinodon pupfishes on San Salvador Island, Bahamas. This specialized predatory niche is known in several other fish groups, but is not found elsewhere among the 1,500 species of atherinomorphs. Second, we quantify this ecological novelty by measuring the time-calibrated phylogenetic distance in years to the most closely-related species with convergent ecology. We find that scale-eating pupfish are separated by 168 million years of evolution from the nearest scale-eating fish. We apply this approach to a variety of examples and highlight the frequent decoupling of ecological novelty from phenotypic divergence. We observe that novel ecology is not always tightly correlated with rates of phenotypic or species diversification, particularly within recent adaptive radiations, necessitating the use of additional measures of ecological novelty independent of phenotype

Quasimarket failure

The efficiency of “quasimarkets”—decentralized public goods provision subjected to Tiebout competition—is a staple of public choice conventional wisdom. Yet in the 1990s a countermovement in political economy called “neoconsolidationism” began to challenge this wisdom. The neoconsolidationists use the logic of government failure central to public choice economics to argue that quasimarkets fail and that jurisdictional consolidation is a superior way to supply public goods and services in metropolitan areas. Public choice scholars have largely ignored the neoconsolidationists’ challenge. This paper brings that challenge to public choice scholars’ attention with the hope of encouraging responses. It also offers some preliminary thoughts about the directions such responses might take.Public Goods; Quasimarkets

Incorporating biological regeneration into economic assessments of mining in forest regions

Assessments of the economic, environmental and social consequences of mining have usually produced an estimate of the commercial benefits that mining in the area would generate, with environmental costs being examined in physical terms only. A theoretical framework for calculating the threshold environmental value of an area (the minimum size of the environmental cost of mining required to make conservation the socially optimal choice) is developed, where both the potential mining benefits and the rate of biological regrowth following mine rehabilitation are known. Including the rate of biological regrowth allows for the calculation of a more meaningful figure, as the benefits generated by rehabilitation are explicitly considered.Resource /Energy Economics and Policy,