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The late 1980s saw the development of two bodies of literature addressing Japan's relationship to the Asian environmental crisis. The Japanese government's statements were concerned primarily with the contributions Japan could make to solving that crisis, while critical scholars and NGOs focused on ways in which Japanese activity exacerbated it. Using the annual White Papers of the Japan Environment Agency as a guide, this survey article inquires into the extent to which the government has come to engage with the arguments of the critical literature during the 1990s, a decade in which governments and multilateral lending agencies have been forced to deal more closely with environmental concerns. In particular I discuss (1) the extent to which the white papers address Japan's negative impacts on Asia; (2) the ways they treat Japan as a model for Asian environmental policy; and (3) their approach to conflict over policy-making. [ABSTRACT FROM AUTHOR]

Growing recognition of the need to tackle climate change and biodiversity loss together is leading to shifts in the global environmental governance landscape such that these two traditionally separate domains are increasingly interlinked. This process is taking place not at the level of the international policy regimes but rather through the work of transnational governance initiatives (TGIs) that connect state and non-state actors and which form an increasingly formalized part of the hybrid regime complexes through which global environmental governance is conducted. Central to these dynamics are 'nature-based solutions', interventions designed to work with nature to achieve multiple sustainability goals. In this paper, we demonstrate the ways in which TGIs frame and implement nature-based solutions. We show how this is leading to an evolution in market and asset-based responses to addressing these twin challenges and consider the wider consequences for how we understand what effective responses to the interlinked problems of climate and biodiversity entail. [ABSTRACT FROM AUTHOR]

Environmental degradation has become one of the major obstacles to sustainable development and human well-being internationally. Scientific efforts are being made to understand the mechanism of environmental degradation and sustainability. Critical Zone (CZ) science and research on the multi-functional landscape are emerging fields in Earth science that can contribute to such scientific efforts. This paper reviews the progress, similarities and current status of these two scientific research fields, and identifies a number of opportunities for their synergistic integration through functional and multi-functional approaches, process-based monitoring, mechanistic analyses and dynamic modeling, global long-term and networked monitoring and systematic modeling supported by scaling and deep coupling. These approaches proposed in this paper have the potential to support sustainable human well-being by strengthening a functional orientation that consolidates multi-functional landscape research and CZ science. This is a key challenge for sustainable development and human well-being in the twenty-first century. [ABSTRACT FROM AUTHOR]

This paper reports an evaluation of existing knowledge regarding the social bases of public concern with environmental quality. First, five popular hypotheses asserting relationships between environmental concern and eight demographic and social variables are reviewed, with particular attention paid to the theoretical explanations offered in support of each hypothesized relationship. Second, the results of 21 relevant studies are evaluated to determine the degree to which the empirical evidence supports the hypothesized relationships. Third, implications of the results of the review for future research are discussed. [ABSTRACT FROM AUTHOR]

The article offers information on the publication titled "Sources, Effects & Sinks of Hydrocarbons in the Aquatic Environment," that discussed several aspects related to hydrocarbons. It is stated that hydrocarbon entering the water bodies through various sources such as oil spills cause a lot of pollution and cause massive environmental degradation. Information on the process of biosynthesis of natural hydrocarbons have also been explained. It is stated that the various sections of the publication include information on petroleum hydrocarbons and the future of hydrocarbon use.

This paper tests propositions advanced in previous theoretical literature about the impact of international economic integration via trade and investment on environmental protection with a case study of China. We hypothesize that instead of leading to additional environmental degradation, increased openness to trade and foreign investment results in an overall improvement in environmental quality by acting as a transmission belt for superior regulatory standards and environmental technology from China’s key export markets. Additionally, pressure for enhanced environmental regulation and product standards from principal developed-world importers of Chinese goods may induce Chinese firms to self-regulate rather than attempting to reduce the cost of their exports by lowering environmental standards. Statistical analysis of the variation in environmental performance across China’s regions from 1996 to 2004 lends support to this hypothesis, indicating that rather than leading regions to engage in a “race to the bottom” with the lowering of environmental standards, increased trade and investment encourages more stringent policy enforcement and compliance. [ABSTRACT FROM AUTHOR]

War and conflict negatively impact all facets of a health system; services cease to function, resources become depleted and any semblance of governance is lost. Following cessation of conflict, the rebuilding process includes a wide array of international and local actors. During this period, stakeholders must contend with various trade-offs, including balancing sustainable outcomes with immediate health needs, introducing health reform measures while also increasing local capacity, and reconciling external assistance with indigenous legitimacy. Compounding these factors are additional challenges, including co-ordination amongst stakeholders, the re-occurrence of conflict and ulterior motives from donors and governments, to name a few. Due to these complexities, the current literature on post-conflict health system development generally examines only one facet of the health system, and only at one point in time. The health system as a whole, and its development across a longer timeline, is rarely attended to. Given these considerations, the present article aims to evaluate health system development in three post-conflict environments over a 12-year timeline. Applying and adapting a framework from Waters et al. (2007, Rehabilitating Health Systems in Post-Conflict Situations. WIDER Research Paper 2007/06. United Nations University. http://hdl.handle.net/10419/63390, accessed 1 February 2018.), health policies and inputs from the post-conflict periods of Afghanistan, Cambodia and Mozambique are assessed against health outputs and other measures. From these findings, we developed a revised framework, which is presented in this article. Overall, these findings contribute post-conflict health system development by evaluating the process holistically and along a timeline, and can be of further use by healthcare managers, policy-makers and other health professionals. [ABSTRACT FROM AUTHOR]

The development, state-of-the-art and application of exergy concept to sustainability are discussed. Thermodynamic indicators, based on exergy, are proposed for the design and optimisation of energy systems. Efficiency of energy systems is determined using energy and exergy. This paper presents a methodology study of thermodynamic indicators for integrated sustainability assessment and its application to geotechnic system analysis. Information, obtained from thermodynamic indicators, is proposed to be used for managing the natural resources and reducing the environmental degradation caused by interaction between an energy system and environment. Life cycle analysis on the basis of exergy flow calculations is considered for assessment of total environmental impact on all stages of energy system life cycle. Integrated exergetic assessment, based on exergy analysis and thermoeconomics, is recommended for comparisons of alternative technical solutions and decision making for energy system design. Application of thermoeconomics to sustainable buildings is examined. [ABSTRACT FROM AUTHOR]

The article presents the schedule of the 1967 American Institute of Biological Sciences (AIBS) meetings which will be conducted at the Memorial Student Center in Texas A&M University, College Station, Texas from August 27 to September 1, 1967 and the information about the food service, housing and field trips. AIBS will hold a Plenary Session on August 28 for all biologists attending the meetings where speakers will discuss those forms of environmental deterioration and quality loss that have been going on for a long time. A half-day symposium on remote sensing, which is being cosponsored by the AIBS and the Ecological Society of America, will be held during the meetings. Also, a special session has been planned for August 31, to enable AIBS members to present papers.

This article discusses the concept of ecological intensification of agriculture through biodiversity management. It explains that humans have been able to achieve higher population densities than other animals due to the invention of agriculture, which allows for the conversion of biomass into food. However, modern industrial agriculture has led to negative effects on the environment, such as pollution, soil fertility loss, and biodiversity loss. The article highlights the positive relationship between biodiversity and plant biomass production in agroecosystems and explores various applications of biodiversity in agriculture, including genetic diversity within crops, mixed cropping, and field border plant diversity. It also discusses obstacles to implementing ecological intensification, such as lack of knowledge and inappropriate incentives. The article concludes by providing a list of literature reviews that readers can use as a starting point for further research on the topic. [Extracted from the article]

This paper argues that, in spite of recent judicial practice contributing to the integration of environmental considerations in human rights adjudication, progress in this field remains limited. This is so because of the prevailing ‘individualistic’ perspective in which human rights courts place the environmental dimension of human rights. This results in a reductionist approach which is not consistent with the inherent nature of the environment as a public good indispensable for the life and welfare of society as a whole. The article, rather than advocating the recognition of an independent right to a clean environment, presents a plea for a more imaginative approach based on the consideration of the collective-social dimension of human rights affected by environmental degradation. [ABSTRACT FROM PUBLISHER]

This paper examines the neoliberal claim that the only way to achieve sustainable growth and full employment is to abandon Keynesian macroeconomic management and the welfare state and bring back `flexible labour market policies'. It summarises the conditions required for neoliberal policies to produce such an outcome and their relevance to contemporary economic, social and political realities. This is followed by an empirical comparison of the economic performance and social well- being of seven advanced economies, widely regarded as leading proponents of the three models of capitalism: liberal, corporatist and social democratic. Contrary to the claim, the model that performs best is the one that has least in common with the neoliberal economic orthodoxy - a conclusion that is likely to be of particular relevance in the present century. [ABSTRACT FROM AUTHOR]

Aquatic ecosystems are constantly changing due to anthropic stressors, which can lead to biodiversity loss. Ocean sound is considered an essential ocean variable, with the potential to improve our understanding of its impact on marine life. Fish produce a variety of sounds and their choruses often dominate underwater soundscapes. These sounds have been used to assess communication, behaviour, spawning location, and biodiversity. Artificial intelligence can provide a robust solution to detect and classify fish sounds. However, the main challenge in applying artificial intelligence to recognize fish sounds is the lack of validated sound data for individual species. This review provides an overview of recent publications on the use of machine learning, including deep learning, for fish sound detection, classification, and identification. Key challenges and limitations are discussed, and some points to guide future studies are also provided. [ABSTRACT FROM AUTHOR]

As climate continues to change, disturbances may increasingly navigate forest ecosystems towards tipping points, causing irreversible state shifts and a loss of biodiversity and ecosystem services. In this review, I elaborate the Special Issue topic 'Natural disturbances as tipping points of forest ecosystems under climate change' featured by Forestry and suggest a suit of adaptive measures to mitigate increasing disturbances and their impacts on forest ecosystems. The Special Issue contains seven case studies assessing drought, fire, wind and bark beetle disturbances in Europe, North America and Africa. Despite high severities and/or frequencies, disturbances have not yet induced a shift of the investigated forest ecosystems towards an alternative state. Instead, forests have shown high resistance, resilience or both. For instance, one case study reveals that short-interval fires in European beech forests may not even significantly alter tree species composition due to the high resprouting ability of beech. Yet, other case studies identify distinct differences in resilience amongst ecoregions, and indicate that climate change and disturbance interactions might tip the future carbon balance of forests from sink to source. Many forest ecosystems are likely able to cope with future increases in disturbance activity to some degree. However, tipping points might vary across ecosystems dominated by different disturbance agents. While wind and bark beetles mainly affect canopy trees, fire and drought also directly impair tree regeneration, thus reducing the capacity of ecosystems to recover and reorganize. Hence, forest ecosystems in which fire and drought are the dominant disturbance agents might approach tipping points earlier than forests dominated by other agents if disturbance activity continues to increase. Several proactive and reactive adaptive measures are available to mitigate increasing disturbances, but more research is needed to develop robust and region-specific strategies to prevent tipping points in forest ecosystems. [ABSTRACT FROM AUTHOR]

The acoustic adaptation hypothesis (AAH) and ecological character displacement (ECD) are two potential mechanisms shaping call evolution that can predict opposite trends for the differentiation of signals. Under AAH, signals evolve to minimize environmental degradation and maximize detection against background noise, predicting call homogenization in similar habitats due to environmental constraints on signals. In contrast, ECD predicts greater differences in call traits of closely related taxa in sympatry because of selection against acoustic interference. We used comparative phylogenetic analyses to test the strength of these two selective mechanisms on the evolution of advertisement calls in glassfrogs, a highly diverse family of neotropical anurans. We found that, overall, acoustic adaptation to the environment may outweigh effects of species interactions. As expected under the AAH, temporal call parameters are correlated with vegetation density, but spectral call parameters had an unexpected inverse correlation with vegetation density, as well as an unexpected correlation with temperature. We detected call convergence among co-occurring species and also across multiple populations from the same species in different glassfrogs communities. Our results indicate that call convergence is common in glassfrogs, likely due to habitat filtering, while character displacement is relatively rare, suggesting that costs of signal similarity among related species may not drive divergent selection in all systems. [ABSTRACT FROM AUTHOR]

Identifying function-enhancing enzyme variants is a 'holy grail' challenge in protein science because it will allow researchers to expand the biocatalytic toolbox for late-stage functionalization of drug-like molecules, environmental degradation of plastics and other pollutants, and medical treatment of food allergies. Data-driven strategies, including statistical modeling, machine learning, and deep learning, have largely advanced the understanding of the sequence–structure–function relationships for enzymes. They have also enhanced the capability of predicting and designing new enzymes and enzyme variants for catalyzing the transformation of new-to-nature reactions. Here, we reviewed the recent progresses of data-driven models that were applied in identifying efficiency-enhancing mutants for catalytic reactions. We also discussed existing challenges and obstacles faced by the community. Although the review is by no means comprehensive, we hope that the discussion can inform the readers about the state-of-the-art in data-driven enzyme engineering, inspiring more joint experimental-computational efforts to develop and apply data-driven modeling to innovate biocatalysts for synthetic and pharmaceutical applications. [ABSTRACT FROM AUTHOR]

This article examines the formation of International Environmental Agreements (IEAs). The economic literature focuses on scenarios where countries are weakly sensitive to environmental damages (constant or linear marginal damages) and finds that stable coalitions are small when countries choose their emission strategies simultaneously and the marginal benefit function is linear. Motivated by empirical evidence, our analysis addresses cases where countries are highly sensitive to environmental damages. In this context, we find equilibrium behaviors that reverse conventional wisdom. For instance, large coalitions including the grand coalition can be supported as an equilibrium outcome when the sensitivity of countries to environmental conditions its high. Our findings provide an additional explanation for large-scale IEAs such as the Montreal Protocol. [ABSTRACT FROM AUTHOR]

Welcomme, R. L. 2011. An overview of global catch statistics for inland fish. – ICES Journal of Marine Science, 68: 1751–1756.The reported global inland fish catch passed 10 million tonnes in 2008, after almost linear growth from the early 1950s. The rise coincides with an increasing number of reports of falling catches resulting from environmental degradation. It is thought that catches from inland waters were underreported in the past because of constraints on collecting the relevant data. National approaches to data collection are not generally comparable and their accuracy not usually assessed. National data processing and reporting should be audited, and training undertaken to harmonize these activities. The apparently bigger catches probably result from better reporting of actual catches rather than any increase in the amount of fish landed. Current data are sufficient only for a general overview of global inland catches of fish, rather than for the detailed analysis needed for management, policy formulation, and the valuation of inland fisheries. There is a need for improved approaches to data collection and for historical catches to be corrected to account for changes in methodologies and reporting procedures. [ABSTRACT FROM PUBLISHER]

Recent military doctrines and activities have re-kindled a long-standing debate about the relationship between international law and arms control in space. There is a notion that existing rules governing certain military uses of outer space are inadequate. Nonetheless, protection of the environment remains sacrosanct. While, to some extent, treaty-based rules governing military uses of outer space also seek to place limitations on the deliberate infliction of environmental damage for military purposes, the development and role of customary international law are pertinent. [ABSTRACT FROM AUTHOR]

An endogenous growth model, which links pollution to ineffective input-use, is developed to examine the potential for achieving balanced growth while preserving the environment through investment in conservation capital. We derive conditions under which individual preferences for environmental quality and private incentives for investment in conservation capital can lead to non-decreasing environmental quality with balanced growth even in the absence of environmental regulations. Additionally, conditions under which investment in conservation capital can enable an environmentally regulated economy to achieve a higher rate of sustainable balanced growth than otherwise are analysed. [ABSTRACT FROM AUTHOR]

Environmental degradation caused by rapid urbanization is a pressing global issue. However, little is known about how urban changes operate and affect environments across multiple scales. Focusing on China, we found urbanization was indeed massive from 2000 to 2015, but it was also very uneven, exhibiting high internal city dynamics. Urban areas in China as a whole became less green, warmer, and had exacerbated PM2.5 pollution. However, environmental impacts differed in newly developed versus older areas of cities. Adverse impacts were prominent in newly urbanized areas, while old urban areas generally showed improved environmental quality. In addition, regional environmental issues are emerging as cities expand, connect and interact to form urban megaregions. To turn urbanization into an opportunity for, rather than an obstacle to, sustainable development, we must move beyond documenting urban expansion to understand the environmental consequences of both internal city dynamics and the formation of urban megaregions. [ABSTRACT FROM AUTHOR]

The need for energy is increasing worldwide as the population has a continuous trend of increase. The restrictions on energy sources are becoming tougher as the authorities set these developed and developing countries. This leads to looking for other alternative energy sources to replace the conventional energy sources, leading to greenhouse emissions. Environmentally friendly energy sources (renewable energies), for example, geothermal, solar and wind, are viewed as clean and sustainable energy sources. Among these kinds of energy sources, geothermal energy is one of the best options because, like solar and wind energy sources, it does not depend on weather conditions. In this work, a single flash geothermal power plant is used to power a transcritical CO2 power plant is proposed. The energy and exergy analysis of the proposed combined power plant has been performed and the best possible operating mode of the power plant has been discussed. The effects of parameters such as separator pressure, CO2 condenser temperature and CO2 turbine inlet pressure and the pinch point on the energy efficiency, exergy efficiency and output power are determined and discussed. Our results indicate that the highest exergy destruction is in the CO2 vapor generator of 182.4 kW followed by the CO2 turbine of 106 kW, then the CO2 condenser of 82.81 kW and then the CO2 pump 58.76 kW. The lowest exergy destruction rates occur in the single flash geothermal power plant components where the separator has exactly zero exergy destruction rate. The results also show that the combined power plant produces more power and has better efficiencies (first law and second law) than the stand-alone geothermal power plant. Finally, Nelder–Mead simplex method is applied to determine the optimal parameters such as separator pressure, power output and pumps input power and second law efficiency. The results show that the power plant should be operated at a lower pinch temperature to reduce damage to the environment. As the condenser pressure increases, the environmental damage effectiveness coefficient decreases sharply until it reaches the minimum value of 1.2 to 1.7 MPa and then starts to increase. The trend of the impact of sports on environmental improvement is exactly the opposite of the trend of the effectiveness of environmental damage. Therefore, from an environmental point of view, it is recommended to operate the gas turbine at a high inlet pressure. [ABSTRACT FROM AUTHOR]

Simplified forest structures following even-age management have been associated with the loss of biodiversity, which may be avoided through disturbance-inspired silviculture. Here, we ask how much do gap characteristics in a managed old-growth differ from those in unmanaged old-growth subject only to natural dynamics? In this study, we compared important characteristics of gaps (e.g. canopy gap fraction, distribution of gap sizes) and gapmakers (e.g. size classes, frequency, decay classes) between a managed and an adjacent unmanaged old-growth Oriental beech (Fagus orientalis Lipsky) compartment in the Keladarsht region of northern Iran 10 years after a single harvest entry using single-tree selection. Canopy openings >100 m2 with visible remnants of gapmakers (i.e. stumps) were included in this study. Gap characteristics of both compartments were within typical ranges for old-growth beech. Nonetheless, small but potentially important differences between the two areas were observed. In the managed compartment, harvesting poor quality trees with structural defects and typical diameters at breast height >52.5 cm plus natural mortality resulted in 102 canopy gaps (1–6 gapmakers, averaging 3.5 gaps/ha, gap fraction 9.8 per cent) compared with 59 natural canopy gaps (1–7 gapmakers, averaging 2.6 gaps/ha, gap fraction 13.7 per cent) in the unmanaged compartment. In both compartments, medium-sized gaps (200–500 m2) were most prevalent. In the managed compartment, 60 per cent of gapmakers were large or very large (typically cut) compared with 39 per cent in the unmanaged compartment where large trees typically snapped and became snags. Uprooting, particularly of small and medium sized gapmakers, was less common in the managed than the unmanaged compartment. Our results indicate that even one single-tree selection harvest may lead to a short-term divergence in stand structure compared with the unmanaged forest. While such managed forests may no longer be considered as old-growth, divergences in canopy gap characteristics indicate that a more nuanced harvesting scheme that includes cutting some larger gaps may more closely mimic the canopy dynamics of this old-growth forest. [ABSTRACT FROM AUTHOR]

The article discusses various reports published within the issue, including one by Garrett Hardin on biological insights into abortion and another by William Odum on environmental degradation.

This paper reports on a global survey of cases of massive state repression since World War II. The universe of analysis includes sustained episodes in which the state or its agents impose on a communal or political group ‘conditions of life calculated to bring about its physical destruction in whole or part.’ We develop and use a typology which distinguishes between two categories of genocide (in which the victim groups are defined primarily in terms of communal characteristics) and four types of politicide (in which victim groups are defined in terms of their political status or opposition to the state). Forty-four episodes meet the operational guidelines developed here. Analysis of their properties and distribution shows that they occurred in all world regions, but with relatively few European and Latin American cases. Two or more began in each five-year period after 1945, with some clustering in the period of African decolonization; their median duration was five years. Aggregate fatalities were between seven and sixteen million people, at least as many who died in all international and civil wars in the period. [ABSTRACT FROM AUTHOR]

In 1992, the Union of Concerned Scientists shared their 'World Scientists' Warning to Humanity' with governmental leaders worldwide, calling for immediate action to halt the environmental degradation that threatens the systems that support life on Earth. A follow-up 'Second Warning' was released in 2017, with over 15 000 scientists as signatories, describing the lack of progress in adopting the sustainable practices necessary to safeguard the biosphere. In their 'Second Warning', Ripple and colleagues provided 13 'diverse and effective steps humanity can take to transition to sustainability.' Here, we discuss how the field of conservation physiology can contribute to six of these goals: (i) prioritizing connected, well-managed reserves; (ii) halting the conversion of native habitats to maintain ecosystem services; (iii) restoring native plant communities; (iv) rewilding regions with native species; (v) developing policy instruments; and (vi) increasing outdoor education, societal engagement and reverence for nature. Throughout, we focus our recommendations on specific aspects of physiological function while acknowledging that the exact traits that will be useful in each context are often still being determined and refined. However, for each goal, we include a short case study to illustrate a specific physiological trait or group of traits that is already being utilized in that context. We conclude with suggestions for how conservation physiologists can broaden the impact of their science aimed at accomplishing the goals of the 'Second Warning'. Overall, we provide an overview of how conservation physiology can contribute to addressing the grand socio-environmental challenges of our time. [ABSTRACT FROM AUTHOR]

Environmental change and biodiversity loss are but two of the complex challenges facing conservation practitioners and policy makers. Relevant and robust scientific knowledge is critical for providing decision-makers with the actionable evidence needed to inform conservation decisions. In the Anthropocene, science that leads to meaningful improvements in biodiversity conservation, restoration and management is desperately needed. Conservation Physiology has emerged as a discipline that is well-positioned to identify the mechanisms underpinning population declines, predict responses to environmental change and test different in situ and ex situ conservation interventions for diverse taxa and ecosystems. Here we present a consensus list of 10 priority research themes. Within each theme we identify specific research questions (100 in total), answers to which will address conservation problems and should improve the management of biological resources. The themes frame a set of research questions related to the following: (i) adaptation and phenotypic plasticity; (ii) human–induced environmental change; (iii) human–wildlife interactions; (iv) invasive species; (v) methods, biomarkers and monitoring; (vi) policy, engagement and communication; (vii) pollution; (viii) restoration actions; (ix) threatened species; and (x) urban systems. The themes and questions will hopefully guide and inspire researchers while also helping to demonstrate to practitioners and policy makers the many ways in which physiology can help to support their decisions. [ABSTRACT FROM AUTHOR]

Solar distillation systems have been found economically feasible in desalination of saline water. It is a simple and cost-effective low-carbon technology. Free of cost, non-polluting, non-exhaustible solar energy is used to produce distilled water inside a solar still. In this article, the usual economic analysis model has been modified by incorporating the factor of equivalent cost of environmental degradation and high- grade energy savings for solar stills. The unit cost of desalination of saline water is estimated to be US$ 0.034/L corresponding to 30.42% energy efficiency of a passive solar still. It decreases to US$ 0.024/L using the modified model. Double-slope passive solar stills desalinate at a lowest cost of US$ 0.007/L. Due to higher capital cost of active solar stills, the unit cost of desalination of saline water is higher even if productivity is more. Effects of variation of energy efficiency, useful life, capital cost, etc. are also studied. The payback periods of the passive solar still are found to be in the range of 1.1 to 7.6 years if the selling price of distilled water decreases from US$ 0.18 to 0.04/L. [ABSTRACT FROM AUTHOR]

Understanding factors driving diversity across biodiversity hotspots is critical for formulating conservation priorities in the face of ongoing and escalating environmental deterioration. While biodiversity hotspots encompass a small fraction of Earth's land surface, more than half the world's plants and two-thirds of terrestrial vertebrate species are endemic to these hotspots. Tropical Southeast (SE) Asia displays extraordinary species richness, encompassing four biodiversity hotspots, though disentangling multiple potential drivers of species richness is confounded by the region's dynamic geological and climatic history. Here, we use multilocus molecular genetic data from dense multispecies sampling of freshwater fishes across three biodiversity hotspots, to test the effect of Quaternary climate change and resulting drainage rearrangements on aquatic faunal diversification. While Cenozoic geological processes have clearly shaped evolutionary history in SE Asian halfbeak fishes, we show that paleo-drainage re-arrangements resulting from Quaternary climate change played a significant role in the spatiotemporal evolution of lowland aquatic taxa, and provide priorities for conservation efforts. [ABSTRACT FROM AUTHOR]

Corrections to the articles "Envisioning China's Political Future: Elite Responses to Democracy as a Global Constitutive Norm" that was published in the September 2007 issue and "Democracy and Environmental Degradation" that was published in the December 2006 issue are presented.

Degradation of the marine environment pushes the law of the sea to develop both substantial and procedural measures to safeguard marine environmental sustainability. Ill-planned and non-planned activities, land, sea or sea-bed based, become one of the main forces behind marine pollution. Environmental impact assessment (EIA), as an effective precautionary tool in evaluating and monitoring potential harm of planned activities, has been rapidly and widely integrated into both national and international legal regimes. However, the rudimentary and unelaborated EIA provisions in the United Nations Convention on the Law of the Sea do not create an effective marine EIA procedure, which can be improved through a comparative study of relevant sources of international law on EIA. [ABSTRACT FROM PUBLISHER]

China harbors one of the most species-rich floras in the world. This plant diversity is currently severely threatened by high levels of habitat degradation and unsustainable resource extraction, the country's exceptionally fast economic growth, an uncontrolled increase in tourism, invasive species, and climate change. Furthermore, China's current system of protected areas is ineffective at conserving the country's plant resources, with low levels of enforcement and only a few small reserves located in both the most phytodiverse regions and in areas facing the highest anthropogenic pressure. Seven strategic steps are required in order to secure a future for China's wild plants, including surveys to establish current species distributions and threat levels, the creation of an effective protected-area system focused on quality rather than quantity, resettlement of parts of the scattered rural population, control of the illegal export trade and invasive species, and a streamlining of administrative responsibilities and capacity building in conservation. [ABSTRACT FROM AUTHOR]

Aims Salt stress resulting from soil salinization is one of the driving forces of the land degradation throughout the world. The modern Yellow River delta is one of the most saline areas in China. Phytoremediation can be an effective way to restore the salinized ecosystems, which requires selecting appropriate plant species. This study explored the germination responses of common plant species from contrasting habitats in the Yellow River delta to varying salinity, offering experimental information for ecosystem restoration in the Yellow River delta. Methods In this study, 15 common plant species from the Yellow River delta were divided into two groups (high-salinity and low-salinity groups) by their natural habitats using Canonical Correlation Analysis. Seeds of each species were treated with five salinity levels (0, 5, 10, 20 and 30 ppt), using a randomized complete block design, and germinated seeds were counted and removed daily for 28 days to calculate the final germination proportion and mean time to germination. The germination responses of seeds to salinity treatments were compared between the two groups. Important Findings In relation to salinity, seed germination behavior of the test species was closely related to the salinity level of the habitats over which they were distributed. Species from the habitats with higher salinity had generally higher final germination proportion but shorter mean time to germination than those from the habitats with lower salinity in all of five salinity treatments used. The final germination proportion and mean time to germination of low-salinity group species were more sensitive to salinity than those of high-salinity group species. Selecting the species with high final germination proportion and short mean time to germination is important for restoration of salinized land. [ABSTRACT FROM PUBLISHER]

Environmentalists have argued that ecological degradation will lead to declines in the well-being of people dependent on ecosystem services. The Millennium Ecosystem Assessment paradoxically found that human well-being has increased despite large global declines in most ecosystem services. We assess four explanations of these divergent trends: (1) We have measured well-being incorrectly; (2) well-being is dependent on food services, which are increasing, and not on other services that are declining; (3) technology has decoupled well-being from nature; (4) time lags may lead to future declines in well-being. Our findings discount the first hypothesis, but elements of the remaining three appear plausible. Although ecologists have convincingly documented ecological decline, science does not adequately understand the implications of this decline for human well-being. Untangling how human well-being has increased as ecosystem conditions decline is critical to guiding future management of ecosystem services; we propose four research areas to help achieve this goal. [ABSTRACT FROM AUTHOR]

Suburban, exurban, and rural development is a leading cause of biodiversity loss and natural resource degradation in the United States. In response to this threat, conservation development has been advanced as a way to combine land development with functional protection for conservation resources. This article provides a review, analysis, and ecological critique of the four principal types of conservation development: (1) conservation buyer projects, (2) conservation and limited development projects, (3) conservation subdivisions, and (4) conservation-oriented planned development projects. Each approach can contribute to landscape-scale conservation, with benefits that include reducing the off-site impacts of development, buffering and connecting protected areas, and conserving imperiled species and ecosystems. However, the benefits of these approaches depend significantly on project density, design, and context. Accordingly, this article offers a framework for differentiating and analyzing these approaches to conservation development for the purposes of research, land-use planning, public policy, and conservation practice. [ABSTRACT FROM AUTHOR]

Over the past 20 years, there have been dozens of news organization, academic, and nonpartisan public opinion surveys on global warming, yet there exists no authoritative summary of their collective findings. In this article, we provide a systematic review of trends in public opinion about global warming. We sifted through hundreds of polling questions culled from more than 70 surveys administered over the past 20 years. In compiling the available trends, we summarize public opinion across several key dimensions including (a) public awareness of the issue of global warming; (b) public understanding of the causes of global warming and the specifics of the policy debate; (e) public perceptions of the certainty of the science and the level of agreement among experts; (d) public concern about the impacts of global warming; (e) public support for policy action in light of potential economic costs: and (f) public support for the Kyoto climate treaty. [ABSTRACT FROM AUTHOR]

Sociologists have long debated the impacts of foreign investment for less developed countries. However, theorization fails to articulate the potential environmental consequences of foreign investment dependence. Here, an ecostructural theory of investment dependence is proposed and a derived hypothesis is tested. The hypothesis states that less developed countries dependent on foreign investment in manufacturing exhibit higher levels of per capita noxious gas emissions. These anthropogenic emissions contribute to global warming, climate change, and a variety of human health problems. To test the hypothesis, newly available panel data for the emission of nitrogen oxides, volatile organic compounds, carbon monoxide, and carbon dioxide gas as well as measures of foreign investment in manufacturing are analyzed in random effects generalized least squares (GLS) panel regression models for 39 less developed countries. Findings confirm the hypothesis, even when controlling for domestic investment the relative size of the manufacturing sector, level of development, and other factors. Overall, the analyses support the ecostructural theory of foreign investment dependence, and underscore the sociological relevance in considering the environmental impacts of the transnational organization of production as well as the overall scale of production. [ABSTRACT FROM AUTHOR]

China's rapid development is influencing global patterns of resource use and their associated environmental and geopolitical impacts. Trend projections suggest that China's rise will have unprecedented impacts on the rest of the world. I examine three key drivers affecting China's emergence (scale of development, government policy decisions, and globalization), along with four factors that may constrain development (environmental degradation, political instability, coal and oil consumption, and carbon dioxide emissions). China's rise represents a tipping point between fossil fuel-based economies and still emergent sustainable alternatives. Policy precedents between the United States and China over the next decade may well determine the future course of global sustainability. [ABSTRACT FROM AUTHOR]

This article brings together the relative gains argument and the analysis of global environmental problems such as ozone depletion and global climate change. We develop an n-actor relative gains model for the provision of nonexcludable goods. In order to derive testable hypotheses we also develop a comparable n-actor specification for excludable goods such as international trade and derive hypotheses concerning the expected level of cooperation by using comparative statics. The models suggest that there should be a higher level of cooperation on trade and ozone depletion than on global climate change. After reviewing alternative explanations we confirm the explanatory power of the model by demonstrating that we observe a much lower level of cooperation for the climate case than either of the other two cases. We thus conclude that the case of global warming falls within the empirical domain of neorealism and that power-based explanations cannot be ignored. [ABSTRACT FROM AUTHOR]

The article discusses the results from the Millennium Ecosystem Assessment, the result of a collaboration of scientists to describe the state of the environment. The report does not provide advice on how to improve the Earth's environment, which, the author claims, is the reason why the media did not offer much press coverage of its release. Components of the assessment include human health, desertification and land degradation, global warming and climate change, population, and wetlands and water. Walter V. Reid was the director of the Millennium Ecosystem Assessment. INSETS: Four scenarios;Earth a star?.

We analyzed the threats to imperiled vertebrate species in China and compared our results with those from a similar study conducted in the United States. Overexploitation is the most pervasive threat to Chinese vertebrates, contributing to the endangerment of 78% of imperiled species, followed by habitat destruction (70%), pollution (20%), alien species (3%), and disease (< 1%). Harvest for food and use in traditional Chinese medicines are the two main forms of overexploitation, while logging is the most pervasive form of habitat destruction. Threats to vertebrate species are strikingly different in the United States, where habitat destruction affects 92% of imperiled vertebrate species, followed by alien species (47%), pollution (46%), overexploitation (27%), and disease (11%). The greater frequency of overexploitation in China stems from China's larger, poorer, and more rural population, along with widespread trade in wildlife products. The apparent tower frequency of alien species in China may reflect neglect of this issue by Chinese scientists. [ABSTRACT FROM AUTHOR]

This article presents a synthesis of what is known about areas of rapid land-cover change around the world over the past two decades, based data compiled from remote sensing and censuses, as well as expert opinion. Asia currently has the greatest concentration of areas of rapid land-cover changes, and dryland degradation in particular. The Amazon basin remains a major hotspot of tropical deforestation. Rapid cropland increase, often associated with large-scale deforestation, is prominent in Southeast Asia. Forest degradation in Siberia, mostly related to activities, is increasing rapidly. The southeastern United States and eastern China are experiencing rapid cropland decrease. Existing not support the claim that the African Sahel is a desertification hotspot. Many of the most populated and rapidly changing cities are found the tropics. [ABSTRACT FROM AUTHOR]

The article reports on the macroeconomic impact of oil industry on forests. Over the past decade there has been growing interest in the relationship between macroeconomics and the environment, including the links to deforestation and forest degradation. This article focuses mainly on the five primary case study countries. For forest impacts, the concentration is on forest conversion to other land uses and deforestation, defined as a removal of trees to less than 10 percent crown cover. Selective logging is thus not deforestation but may degrade forests and enable conversion.

An allochthonous input can modify trophic relationships, by providing an external resource that is normally limiting within a system. The subsidy may not only elicit a growth response of the primary producers via a bottom-up effect, but it also may lead to runaway herbivore growth in the absence of increased predation. If the consumer is migratory and predation is similarly dampened in the alternative system, the increased numbers may produce a top-down cascade of direct and indirect effects on an ecosystem that may be a great distance from the source of the subsidy. In an extreme case, it can lead to a catastrophic shift in ecosystem functioning as a result of biotic exploitation that produces an alternative stable state. The loss of resilience is particularly sensitive to herbivore density which can result in two different outcomes to the vegetation on which the consumer feeds. Over-compensatory growth of aboveground biomass gives way to sward destruction and near irreversible changes in soil properties as density of a herbivore increases. A striking temporal asymmetry exists between a reduction in the consumer population and recovery of damaged vegetation and degraded soils. [ABSTRACT FROM AUTHOR]

Neither biologists nor nonbiologists in today's society are paying adequate attention to the escalating ethical issues raised by the human predicament, and the expertise of biologists seems to demand they make additional contributions to environmental ethics, broadly defined. Massive environmental destruction and the development of biological and nuclear weapons have changed the world; cultural evolution of ethics has not kept pace. "Bioethics" must be expanded from its focus on medical issues to consider such things as the ethics of preserving natural capital for future generations and those of dealing with overconsumption. Bioethics should examine issues as diverse as the ethics of invading Iraq to increase the role of the rich in generating climate change and the ethics of the Lomborg affair. Achieving a sustainable global society will require developing an agreed-upon ethical basis for the necessary political discourse, and the time to start is now. [ABSTRACT FROM AUTHOR]

Evidence suggests that the combinations of over 70,000 to 75,000 chemicals in air, land, water, and food to which children are exposed daily are instrumental in increasing the rates and severity of preventable childhood illness from asthma, leukemia, and other diseases. This article defines chemical contamination and reviews data regarding the ubiquity of toxic chemicals in the United States. It describes major risk pathways to fetuses and children at different developmental stages and discusses evidence regarding exposure and harm to children from chemical contamination. The adequacy of national social welfare and environmental policies is assessed and policy-level interventions are recommended to address the unique vulnerability of children--especially children who are poor and children of color--to toxic chemicals. The authors review the roles for social workers in protecting current and future generations from environmental contaminants. [ABSTRACT FROM AUTHOR]

Over the last three decades, forest degradation in the Brazilian Amazon has diminished the availability of some widely used medicinal plant species. Results of a 9-year market study suggest that forests rep resent an important habitat for medicinal plants used in eastern Amazonia: Nine of the twelve top-selling medicinal plants are native species, and eight are forest based. Five of the top-selling species have begun to be harvested for timber, decreasing the availability of their barks and oils for medicinal purposes. Many of these medicinal plants have no botanical substitute, and pharmaceuticals do not yet exist for some of the diseases for which they are used. Market surveys indicate that all socioeconomic classes in Amazonia use medicinal plants because of cultural preferences, low cost, and efficacy Degradation of Amazonian forests may signify not only the loss of potential pharmaceutical drugs for the developed world but also the erosion of the sole health care option for many of Brazil's rural and urban poor. [ABSTRACT FROM AUTHOR]

A central feature of modernity is that state authority has been conceived as resting on the consent of the governed, which in turn depends upon governments' ability to promote economic prosperity. The performance criteria upon which political authority has been judged in large part are positively correlated with the exponential growth in the use of fossil fuels. An international scientific consensus has emerged: the burning of fossil fuels will cause global climate change sometime in this century. This suggests that the authority of science presents a challenge to a key source of the state'spolitical authority: its role as guarantor of wealth production. Moreover, since the real impact of global climate change will not be felt for several decades,the notion of intergenerational responsibility is implicit in contemporaryefforts to reduce greenhouse gas (GHG) emissions. Given that the liberal notion of political authority entails consent of currently living self-interested citizens, efforts to promote intergenerational responsibility suggest that the basis of political authority is being revised by efforts to cope with global environmental degradation. [ABSTRACT FROM AUTHOR]

Discusses alternatives to viewing environmental destruction in terms of limits when studying the relationship between economic growth and continuous environmental degradation. Alternative metaphors for environmental destruction; Examination of biophysical limits imposed on economic activity; The politics of limits; Benefits of the tapestry and political-ecological approaches.

Focuses on the economic aspects of ecological problems that threaten the sustainability of Earth's life-support systems. How the relative costs and benefits of environmental resources affect peoples' incentives for protecting, enhancing, or destroying natural capital; Difference between global and local environmental concerns; Economic valuation of ecosystem services; Why markets cannot be relied on to generate signals of resource scarcity; Effect of institutional failure on ecosystem degradation.