Journal articles on the topic 'Guyana – Climate'

Devant l'importance des enjeux en termes de climat, de santé publique ou d'activités économiques, la brume de poussières fait l'objet d'un intérêt croissant avec de nombreuses recherches menées depuis maintenant plusieurs décennies. Les régions ultramarines françaises des Antilles et de la Guyane sont particulièrement exposées aux poussières désertiques issues du Sahara. Celles-ci sont composées de divers éléments, notamment minéraux, pouvant favoriser les impacts sanitaires néfastes de certains virus et bactéries. La brume de poussières revêt un intérêt particulier dans la prévision opérationnelle, en raison de son rôle sur la convection atmosphérique, dont la compréhension, l'observation et la modélisation nécessitent d'être approfondies. Nous mettons en exergue la fréquence de ce phénomène aux Antilles et en Guyane, dépendant majoritairement de la variabilité naturelle du climat et des oscillations climatiques, mais pouvant également être en partie lié à l'impact de certaines activités humaines (comme la désertification). Given its importance in terms of climate, public health or economic activities, dust haze is subject to a growing interest with a lot of research carried out for several decades now. The French overseas regions of the Antilles and Guyana are particularly exposed to desert dust from the Sahara, which carries various elements, in particular minerals, and can favour the harmful health impacts of certain viruses and bacteria. Dust haze is of particular interest in operational forecasting because of its role in convection, which requires further understanding, observation and modeling. Through this article, we highlight the frequency of this phenomenon in the French West Indies and Guyana, depending mainly on the natural variability of climate and the climate oscillations, but which can also be partly linked to the impact of certain human activities (such as desertification).

This article follows the journey of Guyana’s Reducing Emissions from Deforestation and Forest Degradation (REDD+) programme, from its promising emergence in 2009 as an ambitious, Norway-funded scheme worth US$250m to its near-abandonment by all actors ten years later. It is based on primary fieldwork conducted in Guyana in 2016 and 2017 and a deep review of the theoretical and empirical literature on REDD+ policy processes and the Norway–Guyana agreement. The article shows how, contrary to the mainstream understanding of environmental policy as a disinterested search for a rational, scientific solution, decisions governing REDD+ policy in Guyana were rather shaped throughout by the political objectives and calculations of a small number of opportunistic elite actors. It further shows how even the modest incarnation of REDD+ in Guyana (which ended up resembling more of a results-based aid programme than a Payment for Ecosystem Services scheme) was continually affected by political factors beyond the control of policy managers. These included fluctuations in the world gold price that led to an increase in mining activity and deforestation, the departure of a key international investor which caused the collapse of the flagship REDD+-funded Amaila Falls hydropower project, and legislative gridlock in Guyana generated by a hung Parliament. While not suggesting that REDD+ (or similar Payment for Ecosystem Services schemes) can never work, the article nonetheless illustrates the ways in which political objectives and unforeseen events can overwhelm substantive policy efforts towards fighting climate change. The findings also illustrate the dangers of prioritizing short-term ‘success stories’ over longer-term and more consultative environmental policy processes.

This article details the epistemic politics that shape the climate adaptation of sea defense in Guyana. Rethinking the material arrangements of expertise in the Anthropocene, I track the work of a group of technoscientific experts participating in the Guyana Mangrove Restoration Project (GMRP). In an attempt to redesign sea defense around mangrove ecosystems, GMRP participants recognize that climate adaptation is not solely dependent on their well-intentioned efforts. As research objects, mangroves are not only forms of evidence but also tools that guide expert action and distinctions in day-to-day labor. Moreover, mangroves draw out the explicit contingencies of modeling, placing expert groups in tension with one another as each seeks to advance their own ideas for mangrove protection, management, or change. I show that this relational ontology is emblematic of climate-adaptation policy’s broader operative logics, or what I call inverse performativity. This is a process whereby an unruly world forces one expert group to seek help from others, building a new ecology of expertise to adapt to a changing climate. Impermanent and wondrous, mangroves urge us to think more creatively about vulnerability to climate change and the kinds of practices that inspire knowledge about it.

Completeness is an important element for Reducing Emissions from Deforestation and forest Degradation (REDD+) accounting to ensure transparency and accountability. However, including a full accounting for all emission sources in a REDD+ program is often resource-intensive and cost-prohibitive, especially considering that some emission sources comprise far less than 10% of total emissions and are thus considered insignificant according to Intergovernmental Panel on Climate Change (IPCC) guidance. This is evident in forest reference emission level (FREL)/forest reference level (FRL) submissions to the United Nations Framework Convention on Climate Change (UNFCCC). Of the 50 countries that have submitted FRELs to date, only half of them include degradation in their FRELs even though degradation is often a significant source of emissions. Half of the countries that do include degradation use satellite imagery without necessarily specifying degrading activities or separating anthropogenic activities. Guyana provides an example of an approach that enables inclusion of all emission sources while considering the significance of each when developing an accounting approach. Since submitting its FREL in 2014, Guyana has made stepwise improvements to its emission estimates so that the country is now able to report on all deforestation and degradation activities resulting in emissions, whether significant or not. Based on the example of Guyana’s efforts, the authors recommend a simple approach to move towards complete accounting in a cost-effective manner. This approach can be scaled to other countries with other activities that results in greenhouse gas emissions from deforestation and forest degradation. Such complete accounting allows for higher accountability in REDD+ systems and can lead to greater effectiveness in reducing emissions.

Reducing emissions from deforestation and forest degradation (REDD+) is a climate change mitigation policy in which rich countries provide payments to developing countries for protecting their forests. In 2009, the countries of Norway and Guyana entered into one of the first bilateral REDD+ programs, with Norway offering to pay US$250 million to Guyana if annual deforestation rates remained below 0.056% from 2010 to 2015. To quantify the impact of this national REDD+ program, we construct a counterfactual times-series trajectory of annual tree cover loss using synthetic matching. This analytical approach allows us to quantify tree cover loss that would have occurred in the absence of the Norway-Guyana REDD+ program. We found that the Norway-Guyana REDD+ program reduced tree cover loss by 35% during the implementation period (2010 to 2015), equivalent to 12.8 million tons of avoided CO2 emissions. Our analysis indicates that national REDD+ payments attenuated the effect of increases in gold prices, an internationally traded commodity that is the primary deforestation driver in Guyana. Overall, we found strong evidence that the program met the additionality criteria of REDD+. However, we found that tree cover loss increased after the payments ended, and therefore, our results suggest that without continued payments, forest protection is not guaranteed. On the issue of leakage, which is complex and difficult to quantify, a multinational REDD+ program for a region could address leakage that results from differences in forest policies between neighboring countries.

The coastal region of Guyana is predicted to experience an increase in annual temperature. Climate change trends indicate that the mean minimum and maximum temperatures will rise above the climatological average. This change in mean temperatures will alter the favourable conditions within coastal ecosystems, which can affect biodiversity. One such at-risk organism is the Guppy (Poecilia reticulata), a species that is particularly sensitive to temperature variations within their habitats.

Abstract This article examines the ways Red Cross training in vulnerability capacity assessment (VCA) structures people’s understandings of the ordinary. This examination is situated within the context of Georgetown, Guyana, after disastrous flooding in 2005 led the Red Cross to deploy VCAs as a method for participatory climate adaptation. The article focuses on the circulation of narratives about the ordinary, which are used by VCA trainees to cultivate ethical responses to flood hazards and the use of water management equipment. It is argued that participatory climate adaptation can be understood as not simply a mode of governance, but rather as a model for reimagining the ordinary. While other scholarship on participatory climate adaptation addresses how daily life is informed by the political and ideological dynamics of such projects, this article focuses on the ordinary from the view of “mobile” climate adaptation technologies. From this perspective, VCA trainees take action but often times rely on sheer intuition to create knowledge practices in an attempt to navigate crisis in the everyday. In turn, they learn that while the VCA may nourish alternative forms of expertise, it is no easy or fool-proof solution for climate adaptation.

End-of-century changes in Caribbean climate extremes are derived from the Providing Regional Climate for Impact Studies (PRECIS) regional climate model (RCM) under the A2 and B2 emission scenarios across five rainfall zones. Trends in rainfall, maximum temperature, and minimum temperature extremes from the RCM are validated against meteorological stations over 1979–1989. The model displays greater skill at representing trends in consecutive wet days (CWD) and extreme rainfall (R95P) than consecutive dry days (CDD), wet days (R10), and maximum 5-day precipitation (RX5). Trends in warm nights, cool days, and warm days were generally well reproduced. Projections for 2071–2099 relative to 1961–1989 are obtained from the ECHAM5 driven RCM. Northern and eastern zones are projected to experience more intense rainfall under A2 and B2. There is less consensus across scenarios with respect to changes in the dry and wet spell lengths. However, there is indication that a drying trend may be manifest over zone 5 (Trinidad and northern Guyana). Changes in the extreme temperature indices generally suggest a warmer Caribbean towards the end of century across both scenarios with the strongest changes over zone 4 (eastern Caribbean).

Purpose This paper aims to explore the need for innovation in Caribbean tourism with stringent (mandatory) environmental regulations as the key driver of the process. It draws examples from three destinations, Barbados, Guyana and Jamaica. Design/methodology/approach This assessment entailed a review of the literature on the key issues. Theories on innovation, regulations and competitiveness were examined in brief. The paper also presents an overview of Caribbean tourism to provide context. Of note is the dearth of information on the drivers of innovation and its effect on the Caribbean tourism industry which was a major limitation of this assessment. Findings The main implication of this review is that it attempts to highlight the need for discourse on the effective use of environmental regulations to influence the behaviour of industry operatives towards achieving sustainable tourism. Within the context of climate change and the threat that this poses to Caribbean tourism, there is the critical need for this discourse. Consideration is also given to the value stringency of regulation since it is theorised that, if applied correctly, this may be the impetus to drive businesses to innovate to be competitive. Originality/value This is a novel approach to the management of the tourism industry which has shown a preference for self-regulation. Given the proposed outcome, the paper advocates mandatory, stringent regulations since self-regulation is a choice left solely to the industry operatives.

Mineral extractive industries are becoming increasingly relevant in climate change science and policy. Guyana’s economic policy, the Low Carbon Development Strategy, seeks to align sectors of the economy along a low carbon emission trajectory. Although the artisanal and small-scale gold mining (ASGM) sector is economically important, it is a known emissions-intensive sector that contributes to deforestation and direct operational emissions.

Fire plays an increasingly significant role in tropical forest and savanna ecosystems, contributing to greenhouse gas emissions and impacting on biodiversity. Emerging research shows the potential role of Indigenous land-use practices for controlling deforestation and reducing CO 2 emissions. Analysis of satellite imagery suggests that Indigenous lands have the lowest incidence of wildfires, significantly contributing to maintaining carbon stocks and enhancing biodiversity. Yet acknowledgement of Indigenous peoples' role in fire management and control is limited, and in many cases dismissed, especially in policy-making circles. In this paper, we review existing data on Indigenous fire management and impact, focusing on examples from tropical forest and savanna ecosystems in Venezuela, Brazil and Guyana. We highlight how the complexities of community owned solutions for fire management are being lost as well as undermined by continued efforts on fire suppression and firefighting, and emerging approaches to incorporate Indigenous fire management into market- and incentive-based mechanisms for climate change mitigation. Our aim is to build a case for supporting Indigenous fire practices within all scales of decision-making by strengthening Indigenous knowledge systems to ensure more effective and sustainable fire management. This article is part of the themed issue ‘The interaction of fire and mankind’.

Abstract. Tropical tree height-diameter (H:D) relationships may vary by forest type and region making large-scale estimates of above-ground biomass subject to bias if they ignore these differences in stem allometry. We have therefore developed a new global tropical forest database consisting of 39 955 concurrent H and D measurements encompassing 283 sites in 22 tropical countries. Utilising this database, our objectives were: 1. to determine if H:D relationships differ by geographic region and forest type (wet to dry forests, including zones of tension where forest and savanna overlap). 2. to ascertain if the H:D relationship is modulated by climate and/or forest structural characteristics (e.g. stand-level basal area, A). 3. to develop H:D allometric equations and evaluate biases to reduce error in future local-to-global estimates of tropical forest biomass. Annual precipitation coefficient of variation (PV), dry season length (SD), and mean annual air temperature (TA) emerged as key drivers of variation in H:D relationships at the pantropical and region scales. Vegetation structure also played a role with trees in forests of a high A being, on average, taller at any given D. After the effects of environment and forest structure are taken into account, two main regional groups can be identified. Forests in Asia, Africa and the Guyana Shield all have, on average, similar H:D relationships, but with trees in the forests of much of the Amazon Basin and tropical Australia typically being shorter at any given D than their counterparts elsewhere. The region-environment-structure model with the lowest Akaike's information criterion and lowest deviation estimated stand-level H across all plots to within amedian −2.7 to 0.9% of the true value. Some of the plot-to-plot variability in H:D relationships not accounted for by this model could be attributed to variations in soil physical conditions. Other things being equal, trees tend to be more slender in the absence of soil physical constraints, especially at smaller D. Pantropical and continental-level models provided less robust estimates of H, especially when the roles of climate and stand structure in modulating H:D allometry were not simultaneously taken into account.

Abstract. Tropical tree height-diameter (H:D) relationships may vary by forest type and region making large-scale estimates of above-ground biomass subject to bias if they ignore these differences in stem allometry. We have therefore developed a new global tropical forest database consisting of 39 955 concurrent H and D measurements encompassing 283 sites in 22 tropical countries. Utilising this database, our objectives were: 1. to determine if H:D relationships differ by geographic region and forest type (wet to dry forests, including zones of tension where forest and savanna overlap). 2. to ascertain if the H:D relationship is modulated by climate and/or forest structural characteristics (e.g. stand-level basal area, A). 3. to develop H:D allometric equations and evaluate biases to reduce error in future local-to-global estimates of tropical forest biomass. Annual precipitation coefficient of variation (PV), dry season length (SD), and mean annual air temperature (TA) emerged as key drivers of variation in H:D relationships at the pantropical and region scales. Vegetation structure also played a role with trees in forests of a high A being, on average, taller at any given D. After the effects of environment and forest structure are taken into account, two main regional groups can be identified. Forests in Asia, Africa and the Guyana Shield all have, on average, similar H:D relationships, but with trees in the forests of much of the Amazon Basin and tropical Australia typically being shorter at any given D than their counterparts elsewhere. The region-environment-structure model with the lowest Akaike's information criterion and lowest deviation estimated stand-level H across all plots to within a median –2.7 to 0.9% of the true value. Some of the plot-to-plot variability in H:D relationships not accounted for by this model could be attributed to variations in soil physical conditions. Other things being equal, trees tend to be more slender in the absence of soil physical constraints, especially at smaller D. Pantropical and continental-level models provided only poor estimates of H, especially when the roles of climate and stand structure in modulating H:D allometry were not simultaneously taken into account.

Abstract. We present an evaluation of sources, sinks and turbulent transport of nitrogen oxides, ozone and volatile organic compounds (VOC) in the boundary layer over French Guyana and Suriname during the October 2005 GABRIEL campaign by simulating observations with a single-column chemistry and climate model (SCM) along a zonal transect. Simulated concentrations of O3 and NO as well as NO2 photolysis rates over the forest agree well with observations when a small soil-biogenic NO emission flux was applied. This suggests that the photochemical conditions observed during GABRIEL reflect a pristine tropical low-NOx regime. The SCM uses a compensation point approach to simulate nocturnal deposition and daytime emissions of acetone and methanol and produces daytime boundary layer mixing ratios in reasonable agreement with observations. The area average isoprene emission flux, inferred from the observed isoprene mixing ratios and boundary layer height, is about half the flux simulated with commonly applied emission algorithms. The SCM nevertheless simulates too high isoprene mixing ratios, whereas hydroxyl concentrations are strongly underestimated compared to observations, which can at least partly explain the discrepancy. Furthermore, the model substantially overestimates the isoprene oxidation products methlyl vinyl ketone (MVK) and methacrolein (MACR) partly due to a simulated nocturnal increase due to isoprene oxidation. This increase is most prominent in the residual layer whereas in the nocturnal inversion layer we simulate a decrease in MVK and MACR mixing ratios, assuming efficient removal of MVK and MACR. Entrainment of residual layer air masses, which are enhanced in MVK and MACR and other isoprene oxidation products, into the growing boundary layer poses an additional sink for OH which is thus not available for isoprene oxidation. Based on these findings, we suggest pursuing measurements of the tropical residual layer chemistry with a focus on the nocturnal depletion of isoprene and its oxidation products.

Abstract. We present an evaluation of sources, sinks and turbulent transport of nitrogen oxides, ozone and volatile organic compounds (VOC) in the boundary layer over French Guyana and Suriname during the October 2005 GABRIEL campaign by simulating observations with a single-column chemistry and climate model (SCM) along a zonal transect. Simulated concentrations of O3 and NO as well as NO2 photolysis rates over the forest agree well with observations when a small soil-biogenic NO emission flux was applied. This suggests that the photochemical conditions observed during GABRIEL reflect a pristine tropical low-NOx regime. The SCM uses a compensation point approach to simulate nocturnal deposition and daytime emissions of acetone and methanol and produces daytime boundary layer mixing ratios in reasonable agreement with observations. The area average isoprene emission flux, inferred from the observed isoprene mixing ratios and boundary layer height, is about half the flux simulated with commonly applied emission algorithms. The SCM nevertheless simulates too high isoprene mixing ratios, whereas hydroxyl concentrations are strongly underestimated compared to observations, which can at least partly explain the discrepancy. Furthermore, the model substantially overestimates the isoprene oxidation products methlyl vinyl ketone (MVK) and methacrolein (MACR) partly due to a simulated nocturnal increase due to isoprene oxidation. This increase is most prominent in the residual layer whereas in the nocturnal inversion layer we simulate a decrease in MVK and MACR mixing ratios, assuming efficient removal of MVK and MACR. Entrainment of residual layer air masses, which are enhanced in MVK and MACR and other isoprene oxidation products, into the growing boundary layer poses an additional sink for OH which is thus not available for isoprene oxidation. Based on these findings, we suggest pursuing measurements of the tropical residual layer chemistry with a focus on the nocturnal depletion of isoprene and its oxidation products.

The burning of fossil fuels in developed nations and the conversion of natural grasslands and forests to intensely managed agricultural production systems are the single most important anthropogenic sources of greenhouse gases (GHGs) contributing to global warming. Such activities do not only contribute to the accumulation of GHGs in the atmosphere, but also lead to the depletion of the global soil organic matter (SOM) pool, further impacting soil fertility and crop productivity. Climate change will likely affect the distribution and productivity of life-sustaining agricultural crops and livestock in different regions of the world, including temperate and tropical biomes. As a result, the United Nations Development Program suggested that millions of people may be facing shortages of food and continued degradation of their agricultural resources. Therefore, one of the challenges is to maintain agricultural productivity to meet current and projected trends in food production, while at the same time minimizing GHG emissions, increasing C (C) sequestration and maintaining soil fertility. This, coupled with large-scale land, soil, and water degradation, will challenge the long-term and sustainable production of agricultural resources that promote food security. Traditional coping mechanisms, such as conventional agroecosystem management practices may not be an economically feasible adaptation strategy, especially for those already experiencing socioeconomic adversity. Therefore, improvement and refinement of ecologically-based land management practices are essential. Soft-path agricultural technologies such as the complex agroecosystems, including agroforestry systems, may make a substantial contribution in the mitigation of GHGs, the sequestration of C, and other ecological services while maintaining a long-term sustainable production of agricultural products. Due to their multipart structure, complex agroecosystems are likely more resilient to climate change and provide a sustainable alternative to conventional land management practices. This special issue of the Agriculture Journal, on the role of complex agroecosystems in climate change mitigation, encapsulates research from temperate and tropical biomes, with a special focus on agroforestry systems. In tropical regions, Chesney et al. investigated the performance of cowpea (Vigna unguiculata L.) on alley cropping agroforestry systems with Gliricidia sepium (Jacq.) Kunth ex Walp. and Leucaena leucacephala (Lam.) de Wit and a no-tree control on an infertile acidic soil in Guyana. Their goal was to evaluate the ability of fast-growing nitrogen (N2)-fixing trees (G. sepium, L. leucocephala) on cowpea yield. Such practice would maximize the cowpea crop yield but minimize the need for an external source of N fertilizers. They suggested that such practices provide a sustainable source of food, and conserve soil resources but it will also reduce the potential production of the GHGs over the long-term. They noted that these agroforestry practices would curb N2O emissions, which has a global warming potential 296 times greater than that of CO2. Smith and Oelbermann used a qualitative approach to evaluate the perception and knowledge of climate change by landowners in a remote Costa Rican agricultural community. They also evaluated the type of sustainable agricultural practices already implemented that could also serve as a strategy to climate change adaptation. Their study showed that community members were aware of climate change and already observed changes in local weather patterns over the past decade that affected the distribution of vegetation and wildlife. As a result, agricultural producers were continually striving to implement agroforestry practices which were viewed as more robust and resilient to climate change by helping to maintain agricultural productivity while also providing economic and socioecological needs. In temperate regions, Evers et al. provided an overview of the potential of tree-based intercropping (agroforestry alley cropping) systems in climate mitigation through the reduction of GHG emissions. They outlined the most recent research results from southern Ontario and Quebec and found that agroforestry systems could lower N2O emissions by 1.2 kg ha-1 y-1 compared to a conventional (monoculture) agroecosystem. They also suggested that the potential of agroforestry systems to sequester C in the soil and tree component was greater than in conventional agroecosystems, especially if fast-growing tree species for bioenergy production were used. Such practices may also provide an opportunity to receive payment for the ecological services provided by the agroforest, making these production systems a better option than conventional systems for agricultural producers in temperate regions. Isaac et al. investigated the internal accumulation and retention of nutrients in nutrient-spiked pine seedlings commonly used in temperate agroforestry systems and hypothesized that nutrient-spiking would lower seedling transplanting stress and reduce pressure on native soil resources and proposed that nutrient spiking would also lead to an increase in nutrient availability for the growing crop and also minimize competition between trees and crops. They found a favorable response in tree and crop root biomass accumulation in nutrient-spiked treatments and found that N, phosphorus (P) and potassium (K) significantly increased in the pine tissue and resulted in a steady or increased uptake of these nutrients by the crop (maize). Isaac et al. suggested that such specialized practices may be required when establishing agroforestry systems for the benefit of nutrient regulation and enhanced capacity to sequester C for the long-term mitigation of climate change. The Argentine Pampa is one of the most fertile regions in the world and natural grasslands and forests continue to be converted to intense agricultural production systems. Such practices have led to large losses in soil organic carbon (SOC) and contributed to the accumulation of GHGs in the atmosphere. The paper by Posse et al. outlines the absence of precise quantitative data on the emission and sequestration of GHG, which impedes a better understanding of the mechanisms driving CO2 emissions from agroecosystems. Although the paper by Posse et al. does not investigate CO2 fluxes from complex agroecosystems, but instead it provides vital information on the emission of this GHG in one of the most rapidly expanding agricultural frontiers in the world, which is also experiencing the effects of global warming on crop productivity. Posse et al. aim to characterize the exchange of CO2, using eddy covariance techniques, in a monoculture soybean system during an extreme dry summer which resulted in a high crop loss. They found that the greatest emission of CO2 occurred during premature crop senescence (due to drought) but the field became a CO2 sink once the soil as covered by weeds. As such, changes in crop phenology and botanical composition (weeds) coincided with changes in the flux of CO2. The papers presented in this special issue of the Agriculture Journal provided an important insight into the potential of decreasing GHGs and maximizing C sequestration. These papers have also provided an important stepping stone by outlining the future direction of research to further understand the importance and role of complex agroecosystems in mitigating climate change. This research field is in its infancy but results are favorable by indicating that complex agroecosystems not only enhance the cycling of nutrients and the productivity of agricultural crops and show greater resilience to climate change, but they can also play an important role in the mitigation of climate change.

Abstract. In the framework of the EUREC4A (Elucidating the role of clouds–circulation coupling in climate) campaign that took place in January and February 2020, integrated water vapour (IWV) contents were retrieved over the open tropical Atlantic Ocean using Global Navigation Satellite System (GNSS) data acquired from three research vessels (R/Vs): R/V Atalante, R/V Maria S. Merian and R/V Meteor. This paper describes the GNSS processing method and compares the GNSS IWV retrievals with IWV estimates from the European Centre for Medium-range Weather Forecasts (ECMWF) fifth reanalysis (ERA5), from the Moderate Resolution Imaging Spectroradiometer (MODIS) infrared products and from terrestrial GNSS stations located along the tracks of the ships. The ship-borne GNSS IWV retrievals from R/V Atalante and R/V Meteor compare well with ERA5, with small biases (−1.62 kg m−2 for R/V Atalante and +0.65 kg m−2 for R/V Meteor) and a root mean square (rms) difference of about 2.3 kg m−2. The results for the R/V Maria S. Merian are found to be of poorer quality, with an rms difference of 6 kg m−2, which is very likely due to the location of the GNSS antenna on this R/V prone to multipath effects. The comparisons with ground-based GNSS data confirm these results. The comparisons of all three R/V IWV retrievals with MODIS infrared products show large rms differences of 5–7 kg m−2, reflecting the enhanced uncertainties in these satellite products in the tropics. These ship-borne IWV retrievals are intended to be used for the description and understanding of meteorological phenomena that occurred during the campaign, east of Barbados, Guyana and northern Brazil. Both the raw GNSS measurements and the IWV estimates are available through the AERIS data centre (https://en.aeris-data.fr/, last access: 20 September 2020). The digital object identifiers (DOIs) for R/V Atalante IWV and raw datasets are https://doi.org/10.25326/71 (Bosser et al., 2020a) and https://doi.org/10.25326/74 (Bosser et al., 2020d), respectively. The DOIs for the R/V Maria S. Merian IWV and raw datasets are https://doi.org/10.25326/72 (Bosser et al., 2020b) and https://doi.org/10.25326/75 (Bosser et al., 2020e), respectively. The DOIs for the R/V Meteor IWV and raw datasets are https://doi.org/10.25326/73 (Bosser et al., 2020c) and https://doi.org/10.25326/76 (Bosser et al., 2020f), respectively.

Les Antilles-Guyane (AG) sont les départements français du continent américain, situés en zone intertropicale. La diversité des écosystèmes ainsi que le climat tropical à très forte pluviosité exposent à un vaste panel de pathologies infectieuses. Ces territoires sont de plus l’objet de mouvements importants de populations, voyageurs ou migrants, ce qui joue un rôle significatif dans le développement d’épidémies et/ou de pathologies émergentes. Ces pathologies infectieuses dites « tropicales » peuvent nécessiter une prise en charge en réanimation. Nous rapportons ici les principales données récentes concernant ces pathologies (hors infection liée au VIH) ainsi que les stratégies diagnostiques et thérapeutiques, à l’usage des réanimateurs amenés à exercer en zone tropicale AG ou recevant en métropole des patients issus de cette région.

The Guianas are an important migratory field in the Caribbean migratory system, whereby goods, objects, currencies, and populations circulate for different reasons: geographical, cultural proximity, climatic, geopolitical and socioeconomic factors. From the 1960s and 1970s, Haitian migration increased in the Guianas. Five decades later, after the January 2010 earthquake, the migratory spaces were intensified in the region, Brazil became part of them as a country of residence and transit to reach French Guiana and Suriname. In 2013, the routes were altered. Some migrants started to use the Republic of Guyana to enter Brazil through the border with Roraima, in the Amazon, or to cross the border towards Suriname and French Guiana. This article is divided into two levels. First, it describes the way in which migrants' practices and trajectories intersect national borders in the Guianas. Then, it analyzes the migratory system, documents and papers, and the problems that the different Haitian migratory generations raise in space and time. The ethnographic research is based on the Triple Border Brazil, Colombia and Peru, but also in Suriname, French Guiana and Haiti.

Abstract. The GABRIEL airborne field measurement campaign, conducted over the Guyanas in October 2005, produced measurements of hydroxyl radical (OH) concentration which are significantly higher than can be simulated using current generation models of atmospheric chemistry. Based on the hypothesis that this "missing OH" is due to an as-yet undiscovered mechanism for recycling OH during the oxidation chain of isoprene, we determine that an OH recycling of about 40–50% (compared with 5–10% in current generation isoprene oxidation mechanisms) is necessary in order for our modelled OH to approach the lower error bounds of the OH observed during GABRIEL. Such a large amount of OH in our model leads to unrealistically low mixing ratios of isoprene. In order for our modelled isoprene mixing ratios to match those observed during the campaign, we also require that the effective rate constant for the reaction of isoprene with OH be reduced by about 50% compared with the lower bound of the range recommended by IUPAC. We show that a reasonable explanation for this lower effective rate constant could be the segregation of isoprene and OH in the mixed layer. Our modelling results are consistent with a global, annual isoprene source of about 500 Tg(C) yr−1, allowing experimentally derived and established isoprene flux rates to be reconciled with global models.

Abstract. The GABRIEL airborne field measurement campaign, conducted over the Guyanas in October 2005, produced measurements of hydroxyl radical (OH) concentration which are significantly higher than can be simulated using current generation models of atmospheric chemistry. Based on the hypothesis that this "missing OH" is due to an as-yet undiscovered mechanism for recycling OH during the oxidation chain of isoprene, we determine that an OH recycling of about 40–50% (compared with 5–10% in current generation isoprene oxidation mechanisms) is necessary in order for our modelled OH to approach the lower error bounds of the OH observed during GABRIEL. Such a large amount of OH in our model leads to unrealistically low mixing ratios of isoprene. In order for our modelled isoprene mixing ratios to match those observed during the campaign, we also require that the effective rate constant for the reaction of isoprene with OH be reduced by about 50% compared with the lower bound of the range recommended by IUPAC. We show that a reasonable explanation for this lower effective rate constant could be the segregation of isoprene and OH in the mixed layer. Our modelling results are consistent with a global, annual isoprene source of about 500 Tg(C) yr−1, allowing experimentally derived and established isoprene flux rates to be reconciled with global models.

Abstract Joint size and fall velocity distributions of raindrops were measured with a Particle Size and Velocity (PARSIVEL) precipitation particle disdrometer in a field experiment conducted during July and August 2007 at a semiarid continental site located in Guyuan, Ningxia Province, China (36°N, 106°16′E). Data from both stratiform and convective clouds are analyzed. Comparison of the observed raindrop size distributions shows that the increase of convective rain rates arises from the increases of both drop concentration and drop diameter while the increase of the rain rate in the stratiform clouds is mainly due to the increase of median and large drop concentration. Another striking contrast between the stratiform and convective rains is that the size distributions from the stratiform (convective) rains tend to narrow (broaden) with increasing rain rates. Statistical analysis of the distribution pattern shows that the observed size distributions from both rain types can be well described by the gamma distribution. Examination of the raindrop fall velocity reveals that the difference in air density leads to a systematic change in the drop fall velocity while organized air motions (updrafts and downdrafts), turbulence, drop breakup, and coalescence likely cause the large spread of drop fall velocity, along with additional systematic deviation from terminal velocity at certain raindrop diameters. Small (large) drops tend to have superterminal (subterminal) velocities statistically, with the positive deviation from the terminal velocity of small drops being much larger than the negative deviation of large drops.

Abstract. Tropical forests are a strong source of biogenic volatile organic compounds (BVOCs) to the atmosphere which can potentially impact the atmospheric oxidation capacity. Here we present airborne and ground-based BVOC measurements representative for the long dry season covering a large area of the northern Amazonian rainforest (6–3° N, 50–59° W). The measurements were conducted during the October 2005 GABRIEL (Guyanas Atmosphere-Biosphere exchange and Radicals Intensive Experiment with the Learjet) campaign. The vertical (35 m to 10 km) and diurnal (09:00–16:00) profiles of isoprene, its oxidation products methacrolein and methyl vinyl ketone and methanol and acetone, measured by PTR-MS (Proton Transfer Reaction Mass Spectrometry), have been used to empirically estimate their emission fluxes from the forest canopy on a regional scale. The mixed layer isoprene emission flux, inferred from the airborne measurements above 300 m, is 5.7 mg isoprene m−2 h−1 after compensating for chemistry and ~6.9 mg isoprene m−2 h−1 taking detrainment into account. This surface flux is in general agreement with previous tropical forest studies. Inferred methanol and acetone emission fluxes are 0.5 mg methanol m−2 h−1 and 0.35 mg acetone m−2 h−1, respectively. The BVOC measurements were compared with fluxes and mixing ratios simulated with a single-column chemistry and climate model (SCM). The inferred isoprene flux is substantially smaller than that simulated with an implementation of a commonly applied BVOC emission algorithm in the SCM.

Abstract Farley, E. V., Starovoytov, A., Naydenko, S., Heintz, R., Trudel, M., Guthrie, C., Eisner, L., Guyon, J. R. 2011. Implications of a warming eastern Bering Sea for Bristol Bay sockeye salmon. – ICES Journal of Marine Science, 68: 1138–1146. Overwinter survival of Pacific salmon (Oncorhynchus sp.) is believed to be a function of size and energetic status they gain during their first summer at sea. We test this notion for Bristol Bay sockeye salmon (O. nerka), utilizing data from large-scale fisheries and oceanographic surveys conducted during mid-August to September 2002–2008 and from February to March 2009. The new data presented in this paper demonstrate size-selective mortality for Bristol Bay sockeye salmon between autumn and their first winter at sea. Differences in the seasonal energetic signatures for lipid and protein suggest that these fish are not starving, but instead the larger fish caught during winter apparently are utilizing energy stores to minimize predation. Energetic status of juvenile sockeye salmon was also strongly related to marine survival indices and years with lower energetic status apparently are a function of density-dependent processes associated with high abundance of juvenile sockeye salmon. Based on new information regarding eastern Bering Sea ecosystem productivity under a climate-warming scenario, we hypothesize that sustained increases in spring and summer sea temperatures may negatively affect energetic status of juvenile sockeye salmon, potentially resulting in increased overwinter mortality.

Les régions tropicales subissent une déforestation importante. En Amérique du Sud,la forêt est généralement remplacée par une prairie, C'est pourquoi nous avons étudié le comportement hydrologique de 2 petits (1,5 ha) bassins versants. Un bassin (bassin B) est recouvert par une forêt primaire, tandis que le second (bassin A) a été défriché et transformé en prairie (Digitaria swazilandensis, programme ÉCÉREX, ORSTOM/CTFT). Ces bassins, situés en Guyane Française, sont proches (500 m), escarpés et principalement constitués par des sols à drainage vertical ralenti. Le climat est de type tmpical humide avec une température moyenne (26 °C) et des précipitations moyennes annuelles (3500 à 3900 mm/an) élevées. L'évapotranspiration réelle et potentielle de la forêt primaire sont respectivement égales à 1470 mm/an et 1565 mm/an, En période d'étiage, nous avons observé un écoulement permanent à l'exutoire du bassin A, alors que le bassin B en est dépourvu. Deux crues (24 mai 1992 et 15 mai 1993) ont été étudiées, simultanément sur les 2 bassins. Pendant les crues, nous avons prélevé des échantillons d'eau des précipitations (pluie et pluviolessivat), des ruisseaux et du sol. Sur ces sites, l'eau circulant dans les couches peu profondes du sol présente une concentration élevée en K+ et faible en Cl-. Une signature opposée caractérise l'eau des couches pmfondes du sol. L'analyse des relations existant entre les traceurs chimiques (K+, Cl-) et isotopique l80) ainsi l'étude des propriétés hydrodynamiques du sol permet de décomposer qualitativement l'hydrogramme de crue en 3 réservoirs: sol superficiel (écoulement hypodermique), sol intermédiaire (de 0 à - 0,4 m), sol profond (bassin B) ou nappe (bassin A). Une décomposition quantitative a été effectuée en utilisant des traceurs chimique (Cl-) et isotopique l80). Nous avons ainsi montré que les crues sur les 2 bassins sont dominées par l'écoulement issu des couches intermédiaires du sol qui représente environ la moitié de l'écoulement total de crue. Cependant,les mécanismes de génération des crues diffèrent sur les 2 bassins. Sur le bassin A, les couches profondes du sol sont saturées avant la crue et participent donc à la totalité de la crue. Au contraire, sur le bassin B, les couches profondes de sol atteignent la saturation peu de temps avant le pic de crue et participent donc essentiellement aux écoulement pendant la décrue. Ces résultats confirment les études hydrologiques réalisées précédemment (FRITSCH, 199Ù) et permettent d'identifier les mécanismes de genèse des crues et ainsi de mettre en évidence l'effet de la déforestation.

Ecological stoichiometry affects the processes and functions of ecosystems, but the similarities and differences of stoichiometric characteristics among diverse agropastoral ecosystems under the same climatic conditions remain unclear. In this study, plant and soil stoichiometric characteristics of different agroecosystems, namely natural grassland (free-grazing and mowed grassland), artificial grassland (oat, Chinese leymus and corn silage), field crops (naked oats, flax and wheat) and commercial crops (cabbage and potatoes), were investigated in Guyuan County, China. Results showed total nitrogen (TN), total phosphorus (TP) and N:P ratios in plant tissue varied significantly among ecosystem types (P < 0.05). In general, the mean soil organic carbon, TN and TP content in the 0–0.3 m soil layer in potatoes (8.01, 1.05 and 0.33 g kg–1 respectively) were significantly lower than in other agroecosystems (P < 0.05). The mean C:N ratios of the 0–0.3 m soil layer did not differ significantly among the agroecosystems (P > 0.05). However, the C:P ratio was lower in potato than cabbage sites (24.64 vs 33.17), and was lower at both these sites than in other agroecosystems (P < 0.05). With regard to N:P ratios, only the potato ecosystem had lower values than in other ecosystems (P < 0.05), which did not differ significantly (P > 0.05). Above all, N is more likely to be limiting than P for biomass production in local agroecosystems. Soil C:P and N:P ratios decreased significantly with an increase in the utilisation intensity (from natural grassland to commercial crop). The findings of this study suggest that restoring, preserving and increasing soil organic carbon (especially for cabbage and potatoes), scientifically adjusting the application of N and P fertiliser and enhancing subsidies for low-loss soil nutrient systems, such as grassland, rather than commercial crops will help improve and sustain agroecosystems.

Research on the overlap between race and vulnerability to the physical and governance-related aspects of climate change is often globally scaled, based on extended temporalities, and colour-coded with non-white populations recognized as being at greater risk of experiencing the adverse effects of climate change. This article shows how de-centring whiteness from its position as automatic, oppositional counterpart to blackness can make space for greater recognition of the role played by the environment in processes of racialization. De-centring whiteness in this way would form a valuable step towards recognizing how race, constructed in part through shifting relations between people and the environment, overlaps with climate vulnerability within multiracial populations. Without discounting the value of global, colour-coded interpretations of race, I point out the limits of their applicability to understandings of how climate change is unfolding Guyana and Suriname, two multiracial Caribbean countries. I argue that in the postcolonial period, relations with the environment take historical constructions of race forward in ways that undergird the impacts of climate change. Even further, I show how the environment has always played a key, underacknowledged role in processes of racialization, complicating colour-coded interpretations of race, whether global or local.

The high-dispersal rates of microorganisms have driven to the expectation of their cosmopolitan geographic distribution. However, recent studies demonstrate that microorganisms instead show particular biogeography. Despite the existence of cosmopolitan species, geographically limited microbial groups have been found in aquatic and terrestrial environments worldwide. Diatoms are long time used model to study the biogeography of microorganisms. They are unicellular eukaryotic microalgae that contribute significantly to the aquatic primary production and have huge taxonomic diversity and marked species-specific ecological preferences. Several authors considered that diatoms have no limits in dispersion and are ubiquitously present. On the other hand, recent studies have shown that endemism exists for several genera, and species may have low dispersal capacity. However, all these studies are based on data obtained by microscopy and therefore suffer from the many well-identified biases associated with the optical identification of microorganisms at large scale. Metabarcoding technologies provide an access to taxonomic precision with a higher resolution compared to microscopy and open therefore the possibility of analyzing microbial diversity at genetic level. Recent bioinformatics tools allow reliable and standardized comparison of large datasets originating from distant geographic regions, overcoming issues related to biases in species identification. In this study we used metabarcoding data to revisit central questions in freshwater diatom biogeography. We assembled a large dataset of samples of benthic diatoms collected from rivers in seven different geographic regions. These regions cover the subpolar (Fennoscandia), temperate (France Mainland) and tropical (West Africa, French Guyana, New Caledonia, Tahiti island and Mayotte island) climate zones. The selected geographic regions can also be classified into four continental areas (Fennoscandia, France Mainland, West Africa, and French Guyana) and three islands (New Caledonia, Tahiti and Mayotte). We analyzed diatom alpha, beta and gamma diversity patterns in this dataset to address two main questions: 1) the presence of a latitudinal gradient in diatom diversity and 2) the cosmopolitanism of diatoms. Similarly to results previously reported by Soininen et al. 2016, our data showed a decrease in diatom richness with a decrease in latitude. However, testing the effect of land type (island vs. mainland) showed that this factor explains the actual variability of richness along the climatic gradient and the effect of latitude is not significant. Differences in community structure between regions and climate zones were significant. In multivariate analysis, tropical samples did not overlap with any of the other climate zones, suggesting the specificity of these communities.

The soils beneath the rainforest of Guyana have the potential to hold, and release, large stores of carbon under land use and climate change. Little is known about soil carbon stocks or molecular dynamics in this region. This study therefore aims to elucidate differences in the molecular (lignin and tannin) and bulk soil organic carbon (SOC) stocks in different ‘sub-environments’ along a rainforest-savannah boundary, setting a framework for further investigation into the soil carbon dynamics of the region. Bulk SOC analysis shows that Gleysols have the highest stocks, particularly those under rainforest vegetation (swamp and island forests surrounded by savannah), whereas Plinthosols have significantly lower SOC stocks. Texture and soil water content analysis indicates that predominantly clay soils play a role in high SOC stocks, whilst predominantly sandy soils prevent SOC stocks from accumulating. Clay and sand are present in both Gleysols and Plinthosols, to different extents. Analysis of lignin and tannin in surface soils of the sub-environments reveals clear differences in molecular composition. Heavily degraded lignin signatures in rainforest Gleysols suggests a surrounding physio-chemical environment which promotes their degradation. Conversely, Plinthosols beneath woodland within the savannah have the greatest amount of lignin and tannin products. The presence of the clay mineral kaolinite and iron oxide strengite in these soils indicates a low ability for protection or complexing of organic matter. Therefore, water content and microbial activity may play a more important role in the degradation of lignin and tannin, as well as the SOC stock. With the potential for future deforestation due to land use or climate change, the high lignin degradation of Gleysols indicates a vulnerability to savannah encroachment. Forest Islands isolated from the main forest biome are the most vulnerable to change, and could lose a significant proportion of their SOC stock in a transition to savannah.

Abstract Few ecologists and evolutionary biologists are familiar with the ecology and evolution of the campo rupestre, an ancient azonal peinobiome characterized by a fire-prone, nutrient-impoverished, montane vegetation mosaic, home to thousands of endemics and climate refugia. With the goal of providing a synthetic view of the campo rupestre, we provide a brief historical account of the biological research, revisit its geographical distribution and identify knowledge gaps. The azonal campo rupestre is distributed as isolated and naturally fragmented sky islands, mostly in Central and Eastern Brazil and in the Guyana Shield, with significant areas across the Amazon, Cerrado, Atlantic Forest, Caatinga and Pantanal. Our proposal to elevate campo rupestre to the level of biome is expected to improve communication among scientists and consolidate the use of the term campo rupestre in the ecological and evolutionary literature, as is the case for analogous ecosystems, such as kwongan, fynbos, páramos and tepuis. Based on the identification of knowledge gaps, we propose a research programme comprising ten key topics that can foster our understanding of the ecology and evolution of campo rupestre and, potentially, support conservation strategies.

Environmental health departments in the Caribbean continue to contend with environmental determinants of health related to an increasingly complex array of challenges, including climatic change, disasters, pollution, bioterrorism, and global pandemics. Building the human resource capacity to meet these challenges requires access to modernized, context-relevant training, especially for environmental health inspectors who interface with the public. This study focuses on the standardized Three-Step training program delivered by education institutions across the Caribbean, which is the primary training required by ministries of health for entry into the environmental health inspectorate. A total of 22 focus groups were completed in five countries—Barbados, Guyana, Jamaica, Saint Lucia, and Trinidad and Tobago—with 94 participants drawn from the education institutions delivering training and the inspectors who have received the training. Findings suggest: program strengths in core academic content; weaknesses in faculty experts to deliver advanced subjects; opportunities for enhancing field-training experiences in collaboration with ministries; and threats to program survival due to bottlenecks in public sector hiring that reduce the attractiveness of entering the profession. Interestingly, academic trainers and practitioners differ on the importance of certain knowledge sets, such as legal and court procedural skills and epidemiological data analysis. As ministries of health in these countries contemplate ways to modernize the inspectorates, these findings can guide how ministries and education institutions work together to modernize the Three-Step training program. Points for practitioners Environmental health inspectors interfacing with the public are well placed to contribute perspectives to the public health modernization discourse. Formal training programs must be periodically and frequently recalibrated to societal needs and the state of the art in subject area knowledge. Strengthening the local teaching institutions’ capacity to deliver relevant educational programs will translate into better-prepared frontline professionals. Formal training lags in integrating some emergent subject areas, such as climate change and environmental health determinants.

AbstractThe origin of modern disjunct plant distributions in the Brazilian Highlands with strong floristic affinities to distant montane rainforests of isolated mountaintops in the northeast and northern Amazonia and the Guyana Shield remains unknown. We tested the hypothesis that these unexplained biogeographical patterns reflect former ecosystem rearrangements sustained by widespread plant migrations possibly due to climatic patterns that are very dissimilar from present-day conditions. To address this issue, we mapped the presence of the montane arboreal taxa Araucaria, Podocarpus, Drimys, Hedyosmum, Ilex, Myrsine, Symplocos, and Weinmannia, and cool-adapted plants in the families Myrtaceae, Ericaceae, and Arecaceae (palms) in 29 palynological records during Heinrich Stadial 1 Event, encompassing a latitudinal range of 30°S to 0°S. In addition, Principal Component Analysis and Species Distribution Modelling were used to represent past and modern habitat suitability for Podocarpus and Araucaria. The data reveals two long-distance patterns of plant migration connecting south/southeast to northeastern Brazil and Amazonia with a third short route extending from one of them. Their paleofloristic compositions suggest a climatic scenario of abundant rainfall and relative lower continental surface temperatures, possibly intensified by the effects of polar air incursions forming cold fronts into the Brazilian Highlands. Although these taxa are sensitive to changes in temperature, the combined pollen and speleothems proxy data indicate that this montane rainforest expansion during Heinrich Stadial 1 Event was triggered mainly by a less seasonal rainfall regime from the subtropics to the equatorial region.

‘Country’ is a word that is made to do much discursive work. In one common configuration, country is synonymous with ‘rural’, also evinced through terms like countryside and country-minded. Yet, at the same time, country is synonymous with ‘nation’. This usage is more emotive and identificatory than administrative, as in ‘my country’, ‘my land’, ‘my homeland’. Augmenting a sense of national allegiance, this use of country evokes something of the connection between people, landscape, belonging, identity and subjectivity. Moreover, country-as-rural(ity) and country-as-nation(ality) have significant overlaps. The rural landscape – the countryside – is often imagined as the ‘heartland’ of the modern Western nation-state – a source of national identity and a storehouse for values ‘lost’ through the experience of progress, modernity and industrialisation (Bell). Here, the countryside, supposedly, is a traditional material and discursive site for family, community and well-being (Little and Austin). From yet another angle, country is a genre or style, as in country music, country and western film, country living, country comfort and country cooking. In this way, country becomes a commercial selling point and a commodified imaginary – although this is not at all mutually exclusive with the evocation of belonging, identity and national cultural values through the countryside. This commodification is seen in the recent revaluing of country getaways (McCarthy), sea-change (Burnley and Murphy) and tree-change (Costello), which in turn invokes the notion of country as a store of traditional values, moral restoration and physical revitalisation. Clearly, then, these multifaceted invocations of country – as rurality, nationality and commodity – interleave and overlap in various and complex ways. The papers comprising this issue of M/C Journal seek to explore the intermingling discourses of country, and how these have changed (and continue to change) over time and between places. Indeed, many of these meanings have heightened importance in the present cultural and political moment, and the contents of the papers draw attention to these emerging currencies. Country-as-nation(ality) – and as homeland – is reinforced in the current context of social unrest around terror, security, minority political rights, and climate change threats. And as people search for anchors of security, reinvestments are made in the ‘authenticity’ of rurality and rural communities as sources of both personal respite and wider national cultural values. This has flow on effects in the sphere of the cultural economy, where country living, rustic style and bucolic retreats are increasingly sought by cultural consumers. These affiliations between country, nation, rurality, security, community and consumption are critically interrogated in the subsequent papers. One key theme elicited across the collection is how country – as style, commodity, rurality and/or nationality – shapes social and cultural identities. Annabel Cooper, Chris Gibson, Loria Maxwell and Kara Stooksbury, Anthony Lambert and Catherine Simpson, and Andrew Gorman-Murray, explore the links between country and national identities, and how these interconnections take both similar and different contours across the United States, Europe and the Antipodes. In their papers, Cooper and Gibson also consider the connections between national identities, country style and gendered subjectivities. Simpson and Lambert, Michael Wesch and Clemence Due, meanwhile, draw attention to the links between land, country and Indigenous subjectivities. In doing so, Due and Lambert and Simpson, as well as Lelia Green, Gerry Bloustien and Mark Balnaves, elicit how discourses of country exclude particular identities, and leave certain social groups with a sense of unease. Terry Maybury, Donna Lee Brien and Jesse Schlotterbeck focus on the broader intermingling of rurality, regionality and identity. Another key theme traced through the papers is how county is also linked with a range of media and cultural commodities. Country music is most well-known in this regard, but also prominent are country and western films and country cooking. Several authors in this collection – Gibson, Maxwell and Stooksbury, and Brien – show the ongoing importance of these products, and their role in linking different notions of country across the scales and sites of the rural, the national and the transnational. Cooper, Schlotterbeck, and Lambert and Simpson reveal how ideas of country seep into films not specifically designated as country films, such as the noir, period and thriller genres. The deployment of country in a range of other cultural and media products is explored in this collection as well, including print news media (Due; Gorman-Murray), tourist promotions (Brien; Gorman-Murray), archival photographs (Gorman-Murray), statecraft (Wesch), and social mores and practices of belonging, attachment and alienation (Green et al; Maybury). Importantly, then, the papers in this collection, drawing on a range of data, entry points and conceptual lenses, explore the way different meanings and scales country overlap, and how notions of country ‘travel’ between places and contexts, in the process transforming and taking on new inflections. In the lead paper, Annabel Cooper explores the way country, national identities and feminine subjectivities come together in Jane Campion’s Portrait of a Lady. In this evocative discussion she shows how gender is modulated by national identities as much as other subjectivities, and moreover, how the insertion of an Antipodean femininity in the film version of Portrait reworked the geographical underpinnings of Henry James’ novel. She argues that the United States’ national self-imagination has moved on in the century between the novel and the film, and that Campion rearticulated the story through a feminine Antipodean lens. In Campion’s Portrait, notions of country and narratives of national femininities travel not only between the United States and Europe, but between the Americas and the Antipodes as well. Chris Gibson provides a complementary piece. Focusing on the imagery and lyrics of country sheet music in pre-war Australia, he shows how masculinities are inflected by discourses of both country-as-rurality and country-as-nation. In this case, images of masculinities from the American West insinuated into Australia through the trans-Pacific transaction of country music, particularly in the simultaneously visual and oral register of sheet music. For both Gibson and Cooper, country, whether associated with rurality or nationality, is not singularly emplaced, but travels transnationally as well. Lori Maxwell and Kara Stooksbury also turn their attention to country music. In their case the focus is contemporary country music in the United States, and the role this genre and its artists has played in recent American political culture, particularly Republican positions on ‘love of country’ and national allegiance. Their analysis shows how country, as a commodity linked with a particular species of rurality, is used by presidents, politicians and commentators to frame discourses of patriotic nationalism and appropriate notions of American belonging. Also focusing on cultural production in the United States’ context, Jesse Schlotterbeck critically examines the diverse roles of rurality and rural places in film noir, helping to define a subgenre of ‘rural noir’. He not only discusses the deployment of the rural in noir as a place of goodness, decency and traditional values, but also how the rural is simultaneously drawn into networks of crime, and even becomes a haven for criminality. This adds to work which challenges the romantic idyllisation of the countryside as a site of moral integrity and a store of ‘proper’ national cultural values. Anthony Lambert and Catherine Simpson similarly raise the spectre of criminality in the countryside through film analysis, but their focus is on the Australian film Jindabyne and the associated geographical context of the Australian Alps. The issues around criminality and country(side) in their analysis is broader than legal transcendence, encompassing contemporary cultural politics and social justice. Jindabyne’s narrative focus on the murder of a young Aboriginal woman provides a catalyst for interrogating Indigenous dispossession, postcolonial race relations, environmental change, and the shifting senses of belonging to country for settler Australians negotiating this ‘aftermath culture’. Andrew Gorman-Murray also concentrates on the Australian Alps, and explores the changing links between this countryside and national identity in a postcolonial settler society, but his cultural political context and catalyst are different: the threats to landscape, country and national values from imminent climate change impacts in the Australian Alps. Cultural dimensions and meanings of climate change are an emerging and important research concern (Hulme), and his analysis demonstrates how national identities and ideals of country(side) are reconfigured through the anticipated effects of climate change on the landscape. The next few papers turn to minority or Indigenous social groups’ belonging and attachment to country, both as nation and (home)land, through various experiences of insecurity. Lelia Green, Gerry Bloustien and Mark Balnaves discuss their survey finding that Jewish-Australians express the highest level of fear amongst religious groups in this country. Analysing both survey responses and additional narratives, they comprehensively interpret this heightened fear through intersecting contemporary processes of terror, insecurity, anti-Semitism, and diasporic community-formation, which collide in the context of cultural and political rhetoric about national homeland security. Complimenting both this paper and Simpson and Lambert’s discussion, Clemence Due considers the vexed question of who can lay claim to country in Australia – understood at-once as the nation, the rural countryside, and its resources – in the cultural political context of Indigenous dispossession and native title issues. She examines how this debate – about negotiating Indigenous rights to country in a political and legal context of white sovereignty – has been depicted in The Australian during 2008. Michael Wesch explores similar tensions between government authority and Indigenous sovereignty in a different context, that of New Guinea. His ethnographic analysis is evocative, showing the quite different concepts of country deployed by the state and local peoples in relation to land, settlement and governance, where Indigenous relational connections to land and belonging rub up against the categorical imperatives of statecraft. The final two papers return to rural and regional areas of Australia, and consider embodied connections to place for settler Australians. Situating her discussion within the academic arenas of food studies and the cultural economy, Donna Lee Brien provides an illuminating analysis of the role and significance of rural and regional chefs within their local communities. Her geographical focus is Armidale and Guyra, in northern New South Wales. Linking country as a generic commodity and as a rural locality, she shows how ‘foodie culture’ is not merely a tourist drawcard, but also deeply implicated in the maintenance of the local community. Terry Maybury, meanwhile, delivers a provocative discussion of the links between country, regionality and belonging through a diagrammatical analysis of ‘home’ – home understood as both “the virtuality of digital flows and the reality of architectural footings.” In this conceptualisation, home provides a nexus for self in a global/regional network, the site which allows one to gather the various elements, scales and nuances of country together in a comprehensible fashion. Home, in this way, lies at the heart of country, and makes sense of all its multifarious and interleaving dimensions and meanings. I would also like to acknowledge and thank Rohan Tate, our cover artist, for providing a photographic montage of ‘country’ which draws together the various strands explored through this collection – as nationality, rurality and commodity. The collection of various signifiers and objects prompts one to question what country is and where it is to be found. I extend thanks to those who reviewed the submissions for this issue. I trust the readers find this collection of papers as stimulating as I have. I hope the juxtaposition of various takes on country, and discussions of how those meanings and experiences intermingle, prompt further exploration and conceptualisation of the discursive and material significance of country in contemporary society and culture. References Bell, David. “Variations on the Rural Idyll.” Handbook of Rural Studies. Eds. Paul Cloke, Terry Marsden and Patrick Mooney. London: Sage, 2006. 149-160. Burnley, Ian and Peter Murphy. Sea Change: Movement from Metropolitan to Arcadian Australia. Sydney: UNSW Press, 2004. Costello, Lauren. “Going bush: the implications of urban-rural migration.” Geographical Research 45.1 (2007): 85-94. Hulme, Mike. “Geographical work at the boundaries of climate change.” Transactions of the Institute of British Geographers 33.1 (2008): 5-11. Little, Jo and Patricia Austin. “Women and the Rural Idyll.” Journal of Rural Studies 12.1 (1996): 101-111. McCarthy, James. “Rural Geography: Globalizing the Countryside.” Progress in Human Geography 32.1 (2008): 129-137.