The target article provides an intermediate account of culture and freedom that is conceived to be curvilinear by treating economic development not as an adaptive outcome in response to climate but as a cause of culture parallel to climate. We argue that the extent of environmental variability, including climatic variability, affects cultural adaptation.

This study utilizes structural equation modeling (SEM) to explore the positive effect of corporate environmental ethics on competitive advantage in the Taiwanese manufacturing industry via the mediator: green innovation performance. This study divides green innovation into green product innovation and green process innovation. The empirical results show that corporate environmental ethics positively affects green product innovation and green process innovation. In addition, this study verifies that green product innovation mediates the positive relationship between corporate environmental ethics and (...) competitive advantage, but green process innovation does not. Therefore, corporate environmental ethics can not only affect competitive advantage directly, but also influence it indirectly via green product innovation in the Taiwanese manufacturing industry. Taiwanese manufacturing companies can increase their corporate environmental ethics and green product innovation to enhance their competitive advantages. (shrink)

ABSTRACT The rapid increase in human population is one of the underlying factors driving the ecological crisis. Despite efforts on the part of educators to raise awareness of environmental issues, the ecological impact of a burgeoning population – and the ethical implications of having children – remains an unbroachable topic. Nevertheless, the increase in human numbers is central to questions of sustainability: How can a species expect to survive in a finite terrestrial environment without limits to its population? Since (...) most of the world’s ecological impact can be traced to capitalist-industrial- consumer societies in over-developed nations, the middle and upper classes in rich countries must weigh the ecological consequences of their family-planning decisions. In this paper, I argue that educational programs that are concerned with environmental ethics should have students examine the assumptions and implications of having children. I consider the risks associated with this proposal and respond to a series of possible objections. This paper does not advocate coercive measures for population control, but rather enjoins a pedagogical responsibility to view having children as an act with ecological consequences, an act that must be subject to careful examination. (shrink)

This study explores both the negotiating styles and moral reasoning processes of business people and governmental officials in Taiwan, so as to provide a footing for outsiders when negotiating with Taiwanese over environmental concerns. Findings imply that Taiwanese business people and governmental officials can and will reason both at the conventional level and at the postconventional level of moral judgment. But, results of this study also indicate that Taiwanese negotiating styles do not necessarily match their levels of moral reasoning. (...) With respect to pollution concerns, Taiwanese seem unwillingly to accept responsibility as autonomous individuals. Instead, responsibility is accepted when mandated by the law. (shrink)

We conduct an online survey experiment to determine the influence of multifunctionality recognition in agriculture on the price premiums of environmental-friendly agricultural products. We use the case of fish-friendly rice produced in Shiga prefecture, Japan, which contributes to the conservation of the water and ecosystem in rural areas around Lake Biwa by setting up fish ways and reducing the use of herbicides. We assume two conditions for consumers to pay premiums on environmental-friendly agricultural products. The first is that (...) consumers recognize multifunctionality in agriculture. The second condition is that consumers have a correct understanding of environment-friendly agricultural products. We thus examine the effects of respondents’ attributes on their responses to two types of visual stimuli: one associated with the multifunctionality of agriculture and information about environment-friendly agricultural products. In the analysis of the respondents; willingness to pay, the price premium of the group with both the stimulus and information is significantly higher than the price premium of the control group with no interventions. However, the price premium of the group with only the stimulus is not statistically different for the control group. The policy implication of this research is that consumers are more likely to support agri-environmental policies if they recognize both the multifunctionality of agriculture and the properties of environmental-friendly agricultural products. The two types of stimuli have complimentary effects on increasing price premiums. Promoting the recognition of multifunctionality is especially important for those who do not usually access information on agriculture. (shrink)

The Hygiene Hypothesis has been recognized as an important cornerstone to explain the sudden increase in the prevalence of asthma and allergic diseases in modernized culture. The recent epidemic of allergic diseases is in contrast with the gradual implementation of Homo sapiens sapiens to the present-day forms of civilization. This civilization forms a gradual process with cumulative effects on the human immune system, which co-developed with parasitic and commensal Helminths. The clinical manifestation of this epidemic, however, became only visible in (...) the second half of the twentieth century. In order to explain these clinical effects in terms of the underlying IgE-mediated reactions to innocuous environmental antigens, the low biodiversity of antigens in the domestic environment plays a pivotal role. The skewing of antigen exposure as a cumulative effect of reducing biodiversity in the immediate human environment as well as in changing food habits, provides a sufficient and parsimonious explanation for the rise in allergic diseases in a highly developed and helminth-free modernized culture. Socio-economic tendencies that incline towards a further reduction of environmental biodiversity may provide serious concern for future health. This article explains that the “Hygiene Hypothesis”, the “Old Friends Hypothesis”, and the “Skewed Antigen Exposure Hypothesis” are required to more fully explain the rise of allergy in modern societies. (shrink)

What does living well look like in the Anthropocene? Despite our brief tenure on planet Earth, we have reached an epoch--the Anthropocene--that is characterized by our species' uncanny ability to spoil our own nest. In the face of this somber reality of ecological degradation, The Book of Ecological Virtues asks the all-important question, "What does living well look like in the Anthropocene?" It is vitally important that we turn towards the cultivation of ecovirtues, a new set of values by which (...) to live, if there is to be hope for us and other species to continue. These essays inspire readers not just to ponder but to embody and live the ideals of these timeless ecological virtues. (shrink)

Contemporary architecture is increasingly grounded in science and mathematics. Architectural discourse has shifted radically from the sometimes disorienting Derridean deconstruction, to engaging scientific terms such as fractals, chaos, complexity, nonlinearity, and evolving systems. That's where the architectural action is -- at least for cutting-edge architects and thinkers -- and every practicing architect and student needs to become conversant with these terms and know what they mean. Unfortunately, the vast majority of architecture faculty are unprepared to explain them to students, not (...) having had a scientific education themselves. Here is an architecture book by an architect/scientist, just in time to help architects in the new millennium. Alexander discusses many of the scientific terms arising in cutting-edge architecture, and explains them to those who don't have scientific training or advanced mathematical knowledge. We find discussions of the evolution of forms; the importance of process in design; iteration; genetic algorithms; sequences of transformations; different levels of scale (i.e. fractals); etc. They are explained here by an architect who is also a scientist, because he wants to change the way architects think and build. Alexander is not merely popularizing other scientists' results and making them accessible to architects: he is in fact presenting new and original scientific work that ties many of these concepts together in a way that will be useful to architects. (shrink)

We explore corporate environmental accountability by examining how carbon emissions affect voluntary climate-related information disclosure based on TCFD principles. Using computerized textual analysis to measure such climate-related disclosure, our results show that firms with higher levels of carbon emissions disclose more climate-related information. This relation is stronger in firms belonging to carbon-intensive industries, such as energy, materials, and utilities. We also examine this relationship at the category level for Governance, Strategy, Risk Management, and Metrics and Targets, finding that carbon (...) emissions drive disclosure in all categories except in Governance. Overall, our findings indicate that high carbon emitting firms appear to discharge their corporate accountability by increasing climate-related disclosure, consistent with legitimizing their potentially unethical actions and submitting to stakeholder and societal pressure. (shrink)

As part of a new focus on sustainability, this study examines the effects of technological attributes, market potential, and environmental factors on the commercialization of technologies. A survey was conducted on two of Taiwan’s promising sustainable high-tech industries—solar photovoltaic (PV) and light emitting diodes (LEDs). We found that if the technologies possess the specific attributes of innovativeness, genericness, simplicity, and compatibility, as required by the potential adopters, the level of market potential will be more favorable and technology commercialization (TC) (...) probability will be higher. In addition, the results of regression analysis indicate that environmental requirements play moderating roles in affecting the relationships between market potential and TC probability. The empirical findings highlight the role of market potential as a mediator between technological attributes and the likelihood of commercialization. Furthermore, environmental factors moderate the influence of market potential on TC. The results of this study can provide firms’ operations with insights into resource allocation, sustainable development, and competitive advantages in an intensely competitive environment. (shrink)

Because no previous literature discusses the determinants of green product development performance, this study develops an original framework to fill the research gap. This study explores the influences of green dynamic capabilities and green transformational leadership on green product development performance and investigates the mediation role of green creativity. The results demonstrate that green dynamic capabilities and green transformational leadership positively influence green creativity and green product development performance. Besides, this study indicates that the positive relationships between green product development (...) performance and their two antecedents—green dynamic capabilities and green transformational leadership—are partially mediated by green creativity. It means that green dynamic capabilities and green transformational leadership can not only directly affect green product development performance positively but also indirectly affect it positively via green creativity. Hence, companies have to increase their green dynamic capabilities, green transformational leadership, and green creativity to enhance their green product development performance. (shrink)

This study extends previous literature on the association between corporate social responsibility and corporate financial behavior by investigating the influence of corporate environmental performance on the cost of debt. Using a sample of Chinese private-owned firms, we document strong and consistent evidence to show that corporate environmental performance is significantly negatively associated with the interest rate on debt—the proxy for the cost of debt. The findings suggest that lenders applaud better environmental performance. Moreover, internal control attenuates the (...) negative association between corporate environmental performance and the interest rate on debt, implying substitutive effects between corporate environmental performance and internal control on the reduction of interest rates on debt. The results are robust to various sensitivity tests and are still valid after controlling for the potential endogeneity between corporate environmental performance and the interest rate on debt. (shrink)

This study examines the influence of corporate environmental performance on the propensity that auditors issue modified audit opinions and further investigates the moderating effects of internal control and greenwashing. Using a sample of Chinese listed firms, our findings reveal that corporate environmental performance is significantly negatively associated with modified audit opinions, suggesting that auditors applaud environmentally friendly firms. Moreover, internal control reinforces the negative association between corporate environmental performance and modified audit opinions, but greenwashing attenuates the negative (...) effect of corporate environmental performance on modified audit opinions. The findings are robust to various sensitivity tests, and our conclusions are still valid after controlling for the potential endogeneity. Additional tests reveal that corporate environmental performance is negatively associated with modified audit opinions only for firms without audit opinion shopping and corporate environmental performance is significantly negatively associated with both earnings management and audit fees. (shrink)

This study aims to propose a framework considering both economic issues and environmental effects in technology evaluation in order to provide firms' decision makers a useful reference in adopting technologies that will enable them to fulfill corporate social responsibilities and get competitive advantages at the same time. Recently, the demands for technology evaluation have increased with the flourishing development of technology licensing, technology transaction or joint venture on the one hand and with the pressing needs of environmental protection (...) for human beings' sustainable development on the other hand. Under such conditions, it thus goes without saying that firms' decision makers are propelled to take into account both economic benefits and environmental effects in evaluating technologies by choosing low or nonpolluting technologies for manufacturing products. Although technology evaluation is not a new and emerging subject currently besetting scholars in the field of management, previous research on this topic has unwittingly left behind the pressing issue of environmental effects. Based on this observation, this study purports to develop a new framework for technology evaluation by taking both economic benefits and environmental perspectives into consideration. In it, we seek to demonstrate that our proposed framework will not only be a workable model but also can serve as a useful point of reference for technology appraisers and firms' decision makers. (shrink)

Drawing from the dual process model of morality and life history theory, the present research examined the role of cognitive and emotional processes as bridges between basic environmental challenges and other-centered moral orientation. In two survey studies, cognitive and emotional processes represented by future-oriented planning and emotional attachment, respectively, or by perspective taking and empathic concern, respectively, positively predicted other-centeredness in prosocial moral reasoning and moral judgment dilemmas based on rationality or intuition. Cognitive processes were more closely related to (...) rational aspects of other-centeredness, whereas the emotional processes were more closely related to the intuitive aspects of other-centeredness. Finally, the cognitive and emotional processes also mediated negative effects of unpredictability, as well as positive effects of individual-level, contest competition on other-centeredness. Overall, these findings support the view that cognitive and emotional processes do not necessarily contradict each other. Rather, they might work in concert to promote other-centeredness in various circumstances and might be attributed to humans’ developmental flexibility in the face of environmental challenges. (shrink)

Despite the (serious) global concerns about the safety and genetic stability of genetically modified organisms, the Malaysian National Biosafety Board (NBB) has recently approved the field testing for genetically modified (GM) male mosquitoes. With this development, bioethical issues, which in some respect could adversely impinge on the social, economic and environmental aspects of the society, have surfaced, and these concerns must be addressed by the authorities concerned. In reviewing this application, the National Biosafety Board has followed the requirements of (...) the Biosafety Act 2007, which was created to strike a balance between promoting biotechnology and at the same time protecting against its potential environmental and human health risks in Malaysia. However, the 2007 Act fails to adequately take into account any bioethical issues in spite of the inclusion of a provision on socio-economic consideration. As part of an ongoing doctoral research project, and by way of an instrumental critique of the 2007 Act, the present paper attempts to address the role and function of the Malaysia biosafety legal framework in governing bioethical concerns relating to Genetically Modified Organisms (GMOs) within the current biotechnology background in Malaysia. Additionally, the paper suggests that the ambiguity of the provisions contained within the 2007 Act in governing such concerns, representing wider societal interests and welfare, in some ways might defeat the balancing role that this act was originally intended to fulfil. (shrink)

Progressive supranuclear palsy is a movement disorder with prominent tau neuropathology. Brain diseases with abnormal tau deposits are called tauopathies, the most common of which is Alzheimer's disease. Environmental causes of tauopathies include repetitive head trauma associated with some sports. To identify common genetic variation contributing to risk for tauopathies, we carried out a genome-wide association study of 1,114 individuals with PSP and 3,247 controls followed by a second stage in which we genotyped 1,051 cases and 3,560 controls for (...) the stage 1 SNPs that yielded P ≤ 10-3. We found significant previously unidentified signals associated with PSP risk at STX6, EIF2AK3 and MOBP. We confirmed two independent variants in MAPT affecting risk for PSP, one of which influences MAPT brain expression. The genes implicated encode proteins for vesicle-membrane fusion at the Golgi-endosomal interface, for the endoplasmic reticulum unfolded protein response and for a myelin structural component. © 2011 Nature America, Inc. All rights reserved. (shrink)

While the effect of top executives' social networks on their compensations has received substantial scholarly attention, little effort has been made to integrate segmented views to offer more complete understanding of this effect. In this paper, we propose an integrative two-stage model by taking both economic and socio-political views into account. We theorise that some characteristics of top executive's outside social ties are positively related to firm performance, and those relationships are conditioned by external and internal strategic contexts, such as (...) environmental uncertainty, strategic relevance, and tie strength. We also theorise that firm performance leads to executives' compensations, but this linkage is moderated by the socio-political dynamics among executives (within-group dynamics) as well as between executives and a board of directors (between-group dynamics) inside the firm. Based on our integrative framework, this paper provides the comprehensive understanding of how executives' compensations are determined and highlights the importance of executive's social ties and their implications. (shrink)

This research empirically investigates the static and dynamic impacts of firms' digital transformation on environmental, social, and governance (ESG) performance by employing data of listed Chinese companies from 2011 to 2020 via estimations of propensity score matching and difference in differences. First, we find that digital transformation does some good to improve firms' ESG, which is confirmed after conducting several robustness tests. Second, digital transformation benefits the three aspects of ESG (environmental performance, social responsibility, and governance), and its (...) impact is dynamic, promote ESG two years after the digital reform. Third, the impact of digital transformation on ESG is not constant among different firms. Specifically, digital transformation's impact on ESG is stronger among firms located in western or central regions of China and to those in polluting and competitive industries, as well as among non-stated-owned enterprises. (shrink)

Nanotechnology shows great promise in a variety of applications with attractive economic and societal benefits. However, societal issues associated with nanotechnology are still a concern to the general public. While numerous technological advancements in nanotechnology have been achieved over the past decade, research into the broader societal issues of nanotechnology is still in its early phases. Based on the data from the Web of Science database, we applied the main path analysis, cluster analysis and text mining tools to explore the (...) main research fronts and hierarchical structure of these societal issues. We found that the research studies fell into four categories: "General Toxicity and EHS (Environment, Health and Safety)," "Medicine and Cytotoxicity," "Assessment and Regulation," and "Environment and Ecotoxicity." These research studies have disclosed much information about the potential effect of nanotechnology on public health and the environment. Relatively speaking, the studies on the assessment, regulation, preventive solutions, and environmental protection are just emerging. This finding indicates that an abundance of effort should be conducted on these emerging themes to maximize the benefits of nanotechnology while minimizing its potential harm. The implications for various parties in this domain are also presented. (shrink)

Exposure to environmental contextual changes, such as those occurring after an earthquake, requires individuals to learn novel routes around their environment, landmarks, and spatial layout. In this study, we aimed to uncover whether contextual changes that occurred after the 2009 L’Aquila earthquake affected topographic memory in exposed survivors. We hypothesized that individuals exposed to environmental changes – individuals living in L’Aquila before, during and after the earthquake (hereafter called exposed participants, EPs) – improved their topographic (...) memory skills compared with non-exposed participants (NEPs) who moved to L’Aquila after the earthquake, as only EPs had to modify their previous cognitive map of L’Aquila. We also hypothesized that memory improvement was selective for the navigational space and did not generalize across other spatial and verbal domains. To test these hypotheses, we compared the topographic and spatial memory skills of 56 EPs without post-traumatic stress disorder symptoms to the skills of 47 NEPs using the Walking Corsi Test (WalCT; memory test in the navigational space) and the Corsi Block-Tapping Test (CBT; visuospatial memory test in the reaching space); EPs and NEPs were matched for gender, education and general navigational skills. A sub-group of participants also underwent the Rey-Auditory Verbal Learning Test (verbal memory test). The results showed that EPs, in contrast to NEPs, showed better performances on topographic learning assessed using the WalCT rather than spatial learning assessed by the CBT. This outcome suggests the possibility that EPs specifically improved topographic memory. This effect may be due to continuous exposure to environmental changes that have required individuals to learn novel paths within the city and integrate novel information, such as “new towns”, into their pre-existing mental representation of the city. Implications and limitations of the study are discussed. (shrink)

There is evidence that asexual reproduction has a long-term disadvantage when compared to sexual reproduction. This disadvantage is usually assumed to arise from the more efficient incorporation of advantageous mutations by sexual populations. We consider here the effect on asexual and sexual populations of changes in the fitness of harmful mutations. It is shown that the re-establishment of equilibrium following environmental change is generally faster in sexual populations, and that the mutational load experienced by the sexual population can (...) be significantly less during this period than that experienced by an asexual one. Changes in the fitness of harmful mutations may therefore impose a greater long-term disadvantage on asexual populations than those which are sexual. (shrink)

This paper argues that a combination of increasing inequality, hypocrisy, population growth and adverse global environmental change imperils our civilisation. Selected examples of existing inequality and the immoral treatment of human beings are provided from countries of the Asia Pacific. There is also limited discussion of the global eco-social crisis, stressing the links between environmental scarcity and the human responses of resentment, conflict, terrorism and ill-governance. The essay contends that just as the lives of unborn humans similar to (...) us are of interest and value to bio-ethicists, so too should be the lives and descendants of people who are unlike us, even if such people are perceived to be substantially different to ourselves in terms of status, culture and spending power. It is argued that it is in the interests of ourselves, society, and global civilisation that the lives of such people are considered and where possible improved in order to foster the “sustainability transition” needed to secure our collective future. The essay concludes with a discussion of an important element for securing our future: the development and implementation of alternative economic systems which will provide more accurate indicators of global progress. (shrink)

Anthropocentrism has been proposed as the underlying cause of modern society's environmental impact. Concomitantly, hunter-gatherers’ orientation towards nature is connected with minimal environmental change or conservation, and seen as validating the idea that ‘what people do about their ecology depends upon what they think about themselves in relation to things around them’ (White 1967: 1205). Here it is argued that the notion that orientation towards nature is instrumental in environmental impact in any generalisable way has little empirical (...) support and, most importantly, is under-theorised and conceptually flawed. Employing a strong structurationist approach, it is shown that the tendency to abstract particular values from their social and environmental context must be resisted and that a deeper conception of the ‘inner lives’ of agents is required. Such an approach is more expansive and engages with a range of other motives as well as the unintended environmental consequences of actions. (shrink)

Partnerships can play an important role in addressing environmental concerns and fostering environmental improvement. In this context, we argue that a more elaborate understanding is needed of how partners intend to reach beyond the partnership boundaries and target stakeholders at the firm, industry, supply-chain, or societal levels. As environmental improvement is intertwined with the process of change, we build on the theory of planned change to explain how the focus on selected partnership mechanisms may help partners anticipate (...) and overcome barriers when targeting environmental improvement at these different levels. We test our framework, using a sample of 566 environmental partnerships formed in the USA, and provide rich insights into how partners intend to reach beyond the partnership boundaries. From a practical perspective, these insights may inform corporate managers’ decision to configure environmental partnerships in terms of the target group and suitable partnership mechanism. From a theory perspective, the study helps develop a more systematic understanding of what partners intend to do and when partnerships may provide benefits in addressing level-specific change barriers. These insights provide a first step in positioning partnerships in the broader context of environmental change and encourage future research to move from the intentions to the actual outcomes. (shrink)

The concept of reaction norms plays a crucial role in connecting molecular and evolutionary biology.

What role does environmental change play in Jakob von Uexküll’s thought? And what role can it play in a up-to-date Uexküllian framework? Admittedly, in hindsight it appears that the Umwelt theory suffers from its reliance on Uexküll’s false premise that the environment (including its mixture of species) is generally stable. In this article, the Umwelt theory of Uexküll is reviewed in light of modern findings related to environmental change, especially from macroevolution. Uexküll’s thought is interpreted as a distinctive (...) theory of phenomenology—an ‘Uexküllian phenomenology’—characterized by an assumption of the (in the realm of life) universal existence of a genuine first person perspective, i.e., of experienced worlds. It is suggested that acknowledging this distinctiveness is critical for eco-phenomenology as well as for biosemiotics; the latter of which can only thus thrive as a true ‘semiotics of being’, rather than a mere ‘semiotics of functioning’. (shrink)

Work on global ethics looks at ethical connections on a global scale. It should link closely to environmental ethics, recognizing that we live in unified social-ecological systems, and to development ethics, attending systematically to the lives and interests of contemporary and future poor, marginal and vulnerable persons and groups within these systems and to the effects on them of forces around the globe. Fulfilling these tasks requires awareness of work outside academic ethics alone, in other disciplines and across disciplines, (...) in public debates and private agendas. A relevant ethics enterprise must engage in systematic description and understanding of the ethical stances that are expressed or hidden in the work of influential stakeholders and analysts, and seek to influence and participate, indeed embed itself, in the expressed and hidden choice-making involved in designing and conducting scientific research and in policy analysis and preparation; it will contribute in value-critical and interpretive policy analysis. It will explore how the allocation of attention and of concern in research and policy depend on perceptions of identity and of degrees of interconnection, and are influenced by the choice or avoidance of humanistic interpretive methodologies. The paper illustrates these themes with reference to the study of climate change. (shrink)

This book discusses the effects that power generation has had on the land, the water, the air, and the biosphere.

T. C. Boyle’s A Friend of the Earth (2001), tells the story of Tyrone Tierwater, a one time monkeywrencher and environmental avenger for “E. F.!” (Earth Forever!) who we first meet in 2025 in his mid-seventies. Tierwater is now working for a character based on Michael Jackson, who in his semi-retirement has employed the elder eco-warrior to help save some of the last remnants of a few dying species – warthogs, peccaries, hyenas, jackals, lions and what is likely the (...) last Patagoninan fox. The not too distant environmental future painted by Boyle is a disaster. Global warming has finally caught up to us with a vengeance and even the secure shores of the U.S. are wracked by unmitigated cycles of flooding and drought seriously degrading most semblances of life as we know it. To be sure, though, people, and some versions of progress, go on. While most affordable food and drink is limited to some combination of catfish and sake (very little else having survived decades of disastrous weather and a series of crop blights), and there are constant threats of new strains of life-threatening and highly contagious diseases, suburban development continues and new humans come into existence with the promise, at least in the developed world, of longer life spans. But Boyle does not give us anything like the overly optimistic views expressed by some conservative columnists who dismiss the need for global climate treaties; this is not an environmental future that is only felt with difficulty in the underdeveloped south requiring simpler economic readjustments for Americans without a substantial shift in lifestyle. The world.. (shrink)

Animals and plants are metaorganisms and associate with microbes that affect their physiology, stress tolerance, and fitness. Here the hypothesis that alteration of the microbiome may constitute a fast‐response mechanism to environmental change is examined. This is supported by recent reciprocal transplant experiments with reef corals, which have shown that their microbiome adapts to thermally variable habitats and changes over time when transplanted into different environments. Further, inoculation of corals with beneficial bacteria increases their stress tolerance. But corals (...) differ in their ability to flexibly associate with different bacteria. How scales of microbiome flexibility may reflect different metaorganism adaptation mechanisms is discussed and future directions for research are pinpointed. It is posited that microbiome flexibility is a broad phenomenon that contributes to the ability of organisms to respond to environmental change. Importantly, adapting with microbial help may provide an alternate route to organismal adaptation that facilitates rapid responses. (shrink)

3. Inherent Value and Moral Standing in Environmental Change was published in Earthly Goods on page 52.

Two kinds of factors set the tempo and direction of organic and cultural evolution, those external to biotic evolutionary process, such as changes in the earth’s physical and chemical environments, and those internal to it, such as the time required for chance factors to lead lineages across adaptive valleys to a new niche space (Valentine 1985). The relative importance of these two sorts of processes is widely debated. Valentine (1973) argued that marine invertebrate diversity patterns responded to seafloor spreading (...) as this process generated more or less niche space. He suggested that natural selection is a powerful force and that earth’s biota are in near equilibrium with the niches available on the geological time scale. Walker and Valentine (1984) modeled the evolution of species assuming a logistic speciation rate limited by internal factors and a diversity-independent death rate caused by ongoing environmental change. Fitting this model to the observed evolution of shelled marine invertebrates suggests that the lag between extinctions and the evolution of new species leaves perhaps 30% of ecological niches unfilled. In this model, the biota lag environmental change by perhaps a few million years. However, as Valentine (1985) notes, if adaptive landscapes have whole suites of niches protected by deep maladaptive valleys, the waiting time for some pioneering species to cross the divide may be very long, generating the rare events that set new body plans and generate major adaptive radiations. Eldredge and Gould (1972) and Gould (2002) championed the idea that internal processes such as genetic and developmental constraints, coupled with the complexity of the adaptive landscape, resulted in a highly historically contingent evolutionary process. On Gould’s account, most of the history of life had to do not with a relatively close tracking of a changing environment but with the halting evolutionary exploration a deeply fissured niche space, mostly by rapid bursts of evolution as a fissure was crossed, followed by long periods of stasis.. (shrink)