Regional issues in environmental education

This paper presents a panorama of the African environmental education and communication (EE&C) landscape as it relates to natural resource management by capturing a view of past and current endeavours in The Gambia, Madagascar. Namibia, and Uganda and by positing a potential vision of future activities. On-site qualitative methods were employed. Observations are discussed in terms of their relevance to public and private sector support for a) formal EE&C (curriculum, teacher training, instructional materials). b) nonformal EE&C (adults/out-of-school youth continuing education programmes, extracurricular school youth programmes. public sector extension education systems. multi-media social marketing campaigns), c) community based EE&C, and d) interpretive EE&C

A Communication Strategy to Address Health Inequities in Municipal Settings

This study assessed knowledge of health inequities, importance and benefits/barriers of addressing inequities, and ways of communicating information about inequities among municipal officials. Five focus groups (N=47) were conducted with officials from economic development, land use and housing, public safety, education, and environment departments. Discussions were recorded, transcribed and analyzed for key themes. Findings show that participants had an uneven understanding of the symptoms and causes of health inequities and identified limitations to participating in health equity initiatives and collaborating with local health departments. Recommendations are that a communication strategy to reduce health inequities should aim to increase awareness of the links between local government policies and the health status of vulnerable populations. For collaborative efforts to work, local health departments need to make functions of public health more explicit, provide evidence of health inequities and their causes, and demonstrate that they have the commitment and capacity to lead

Hunter Harvest of Pen-Reared Northern Bobwhites Released From the Surrogator

There has been increased interest in releasing pen-reared northern bobwhites (Colinus virginianus) to meet quail hunting and shooting objectives as populations have declined. The Surrogatort is a commercially available product for rearing and releasing gamebirds into the wild and is promoted as a method to enhance bobwhite survival, improve hunting, and increase recruitment from natural reproduction. We used return-to-hunter bag data from 3 properties in Alabama, Georgia, and Kentucky to evaluate the Surrogatort as a pre-hunting season release technique for pen-reared bobwhites. Across all sites, 3,859 5-week old banded bobwhite chicks were released at varying times during June through October, 2005–2010. Ninety-three quail hunts were conducted during November through January 2005–2011 comprising 431 hunt party hours which resulted in 19 banded bobwhites being harvested. The return-to-hunter bag for all sites combined was 0.005 (range 1⁄4 0.000 to 0.008). This was considered unsatisfactory at each site and across all sites combined for a quality hunting/shooting experience. The mean cost per chick released was $3.41 (range 1⁄4$2.74 to $3.88) including the costs of quail chicks, Surrogatort units, propane, and feed across all sites. The mean cost per bird returned-to-hunter bag (Alabama and Georgia) was$655.80 (range 1⁄4 $489.91 to$821.68). These costs did not include economic depreciation of Surrogatort units

Host-linked soil viral ecology along a permafrost thaw gradient

Climate change threatens to release abundant carbon that is sequestered at high latitudes, but the constraints on microbial metabolisms that mediate the release of methane and carbon dioxide are poorly understood1,2,3,4,5,6,7. The role of viruses, which are known to affect microbial dynamics, metabolism and biogeochemistry in the oceans8,9,10, remains largely unexplored in soil. Here, we aimed to investigate how viruses influence microbial ecology and carbon metabolism in peatland soils along a permafrost thaw gradient in Sweden. We recovered 1,907 viral populations (genomes and large genome fragments) from 197 bulk soil and size-fractionated metagenomes, 58% of which were detected in metatranscriptomes and presumed to be active. In silico predictions linked 35% of the viruses to microbial host populations, highlighting likely viral predators of key carbon-cycling microorganisms, including methanogens and methanotrophs. Lineage-specific virus/host ratios varied, suggesting that viral infection dynamics may differentially impact microbial responses to a changing climate. Virus-encoded glycoside hydrolases, including an endomannanase with confirmed functional activity, indicated that viruses influence complex carbon degradation and that viral abundances were significant predictors of methane dynamics. These findings suggest that viruses may impact ecosystem function in climate-critical, terrestrial habitats and identify multiple potential viral contributions to soil carbon cycling

Metabolic rate and rates of protein turnover in food-deprived cuttlefish, Sepia officinalis (Linnaeus 1758)

To determine the metabolic response to food deprivation, cuttlefish (Sepia officinalis) juveniles were either fed, fasted (3 to 5 days food deprivation), or starved (12 days food deprivation). Fasting resulted in a decrease in triglyceride levels in the digestive gland, and after 12 days, these lipid reserves were essentially depleted. Oxygen consumption was decreased to 53% and NH4 excretion to 36% of the fed group following 3-5 days of food deprivation. Oxygen consumption remained low in the starved group, but NH4 excretion returned to the level recorded for fed animals during starvation. The fractional rate of protein synthesis of fasting animals decreased to 25% in both mantle and gill compared with fed animals and remained low in the mantle with the onset of starvation. In gill, however, protein synthesis rate increased to a level that was 45% of the fed group during starvation. In mantle, starvation led to an increase in cathepsin A-, B-, H-, and L-like enzyme activity and a 2.3-fold increase in polyubiquitin mRNA that suggested an increase in ubiquitin-proteasome activity. In gill, there was a transient increase in the polyubiquitin transcript levels in the transition from fed through fasted to the starved state and cathepsin A-, B-, H-, and L-like activity was lower in starved compared with fed animals. The response in gill appears more complex, as they better maintain rates of protein synthesis and show no evidence of enhanced protein breakdown through recognized catabolic processes

Lattice Gas Automata for Reactive Systems

Reactive lattice gas automata provide a microscopic approachto the dynamics of spatially-distributed reacting systems. After introducing the subject within the wider framework of lattice gas automata (LGA) as a microscopic approach to the phenomenology of macroscopic systems, we describe the reactive LGA in terms of a simple physical picture to show how an automaton can be constructed to capture the essentials of a reactive molecular dynamics scheme. The statistical mechanical theory of the automaton is then developed for diffusive transport and for reactive processes, and a general algorithm is presented for reactive LGA. The method is illustrated by considering applications to bistable and excitable media, oscillatory behavior in reactive systems, chemical chaos and pattern formation triggered by Turing bifurcations. The reactive lattice gas scheme is contrasted with related cellular automaton methods and the paper concludes with a discussion of future perspectives.Comment: to appear in PHYSICS REPORTS, 81 revtex pages; uuencoded gziped postscript file; figures available from [email protected] or [email protected]