In 1988, David Hull presented an evolutionary account of science. This was a direct analogy to evolutionary accounts of biological adaptation, and part of a generalized view of Darwinian selection accounts that he based upon the Universal Darwinism of Richard Dawkins. Criticisms of this view were made by, among others, Kim Sterelny, which led to it gaining only limited acceptance. Some of these criticisms are, I will argue, no longer valid in the light of developments in the formal modeling of (...) evolution, in particular that of Sergey Gavrilets’ work on adaptive landscapes. If we can usefully recast the Hullian view of science as being driven by selection in terms of Gavrilets’ and Kaufmann’s view of there being “giant components” of high-fitness networks through any realistic adaptive landscape, we may now find it useful to ask what the adaptive pressures on science are, and to extend the metaphor into a full analogy. This is in effect to reconcile the Fisherianism of the Dawkins–Hull approach to selection and replicators, with a Wrightean drift account of social constructionist views of science, preserving, it is to be hoped, the valuable aspects of both. (shrink)

Debates over adaptationism can be clarified and partially resolved by careful consideration of the ‘grain’ at which evolutionary processes are described. The framework of ‘adaptive landscapes’ can be used to illustrate and facilitate this investigation. We argue that natural selection may have special status at an intermediate grain of analysis of evolutionary processes. The cases of sickle-cell disease and genomic imprinting are used as case studies.

The discussion of the adaptive landscape in the philosophical literature appears to be divided along the following lines. On the one hand, some claim that the adaptive landscape is either “uninterpretable” or incoherent. On the other hand, some argue that the adaptive landscape has been an important heuristic, or tool in the service of explaining, as well as proposing and testing hypotheses about evolutionary change. This paper attempts to reconcile these two views.

The adaptive landscape is one of the most widely used metaphors in evolutionary biology. It is created by plotting fitness against phenotypes or genotypes in a given environment. The shape of the landscape is crucial in predicting the outcome of evolution: whether evolution will result in populations reaching predictable end points, or whether multiple evolutionary outcomes are more likely. In a more applied sense, the landscape will determine whether organisms will evolve to lose ‘costly’ resistance to (...) antibiotics, herbicides or pesticides when the use of the control agent is stopped. Laboratory populations of microbes allow evolution to be observed in real time and, as such, provide key insights into the topology of adaptive landscapes. BioEssays 27:1167–1173, 2005. © 2005 Wiley Periodicals, Inc. (shrink)

Sewall Wright introduced the metaphor of evolution on “adaptive landscapes” in a pair of papers published in 1931 and 1932. The metaphor has been one of the most influential in modern evolutionary biology, although recent theoretical advancements show that it is deeply flawed and may have actually created research questions that are not, in fact, fecund. In this paper I examine in detail what Wright actually said in the 1932 paper, as well as what he thought of the matter (...) at the very end of his career, in 1988. While the metaphor is flawed, some of the problems which Wright was attempting to address are still with us today, and are in the process of being reformulated as part of a forthcoming Extended Evolutionary Synthesis. (shrink)

The concepts of adaptive/fitness landscapes and adaptive peaks are a central part of much of contemporary evolutionary biology; the concepts are introduced in introductory texts, developed in more detail in graduate-level treatments, and are used extensively in papers published in the major journals in the field. The appeal of visualizing the process of evolution in terms of the movement of populations on such landscapes is very strong; as one becomes familiar with the metaphor, one often develops the feeling (...) that it is possible to gain deep insights into evolution by thinking about the movement of populations on landscapes consisting of adaptive valleys and peaks. But, since Wright first introduced the metaphor in 1932, the metaphor has been the subject of persistent confusion, from equivocation over just what the features of the landscape are meant to represent to how we ought to expect the landscapes to look. Recent advances—conceptual, empirical, and computational—have pointed towards the inadequacy and indeed incoherence of the landscapes as usually pictured. I argue that attempts to reform the metaphor are misguided; it is time to give up the pictorial metaphor of the landscape entirely and rely instead on the results of formal modeling, however difficult such results are to understand in ‘intuitive’ terms. (shrink)

Metaphors play a crucial role in both science in particular and human discourse in gen- eral. Plato’s story of the cave—about people shackled to a wall and incapable of perceiv- ing the world as it really is—has stimulated thinking about epistemology and the nature of reality for more than two millennia. But metaphors can also be misleading: being too taken with Plato’s story has cost philosophers endless discussions about how to access the world “as it is,” until Kant showed us (...) that it is just not going to happen, ever. (shrink)

Sewall Wright's adaptive landscape is the most influential heuristic in evolutionary biology. Wright's biographer, Provine, criticized Wright's adaptive landscape, claiming that its heuristic value is dubious because of deep flaws. Ruse has defended Wright against Provine. Ruse claims Provine has not shown Wright's use of the landscape is flawed, and that, even if it were, it is heuristically valuable. I argue that both Provine's and Ruse's analyses of the adaptive landscape are defective and (...) suggest a more adequate understanding of it. (shrink)

Philosophical analyses of science tend to ignore illustrations, implicitly regarding them as theoretically dispensible. If challenged, it is suggested that such neglect is justifiable, because the use of illustrations only leads to faulty reasoning, and thus is the mark of bad or inadequate science. I take as an example one of the most famous illustrations in the history of evolutionary biology, and argue that the philosophers' scorn is without foundation. I take my conclusions to be support for a naturalistic approach (...) to philosophy. (shrink)

Wright’s “adaptive landscape” has been influential in evolutionary thinking but controversial, especially because the landscape that organisms encounter is altered by the evolutionary process itsel...

The concepts of adaptation and fitness have such an appeal that they have been used in other scientific domains, including the social sciences. One particular aspect of this theory transfer concerns the so-called fitness landscape models. At first sight, fitness landscapes visualize how an agent, of any kind, relates to its environment, how its position is conditional because of the mutual interaction with other agents, and the potential routes towards improved fitness. The allure of fitness landscapes is first and (...) foremost that it represents a complex story about adaptation and fitness in one coherent image. Different accounts of fitness landscapes in different domains in the social sciences suggest that the properties and functions of fitness landscapes are attributed rather freely. These differences are testimony of the model’s versatility. At the same time, one will notice that the different approaches can also create ambiguity about the exact meaning and role of fitness landscapes in the social sciences. This article presents an extensive literature survey of the diverging interpretations and uses of fitness landscapes in the social sciences and discusses the implications in terms of how these models inform scientific inquiry. (shrink)

Prolonged investigations of past and present use of wetland margins in various lowlands within Latin America have yielded a wealth of detail. It has become necessary to search out regularities in the natural environmental context and the human adaptations, all of which can be done advantageously in the context of the concept of landscape. Such a move in the direction of theory is attempted here by means of a heuristic model and an exploration of variations in its expression. The (...) discussion of seasonal as well as longer termed change in the natural environment and human adaptation is easily accomodated. The essay includes a brief consideration of some of the recent directions in the investigation of the tropical wetland landscape. (shrink)

Few metaphors in biology are more enduring than the idea of Adaptive Landscapes, originally proposed by Sewall Wright (1932) as a way to visually present to an audience of typically non- mathematically savvy biologists his ideas about the relative role of natural selection and genetic drift in the course of evolution. The metaphor, how- ever, was born troubled, not the least reason for which is the fact that Wright presented different diagrams in his original paper that simply can- not (...) refer to the same concept and are therefore hard to reconcile with each other (Pigliucci 2008). For instance, in some usages, the landscape’s non- fitness axes represent combinations of individual genotypes (which cannot sensibly be aligned on a linear axis, and accordingly were drawn by Wright as polyhedrons of increasing dimensionality). In other usages, however, the points on the diagram represent allele or genotypic frequencies, and so are actually populations, not individuals (and these can indeed be coherently represented along continuous axes). (shrink)

The two authors of this paper have diametrically opposed views of the prevalence and strength of adaptation in nature. Hendry believes that adaptation can be seen almost everywhere and that evidence for it is overwhelming and ubiquitous. Gonzalez believes that adaptation is uncommon and that evidence for it is ambiguous at best. Neither author is certifiable to the knowledge of the other, leaving each to wonder where the other has his head buried. Extensive argument has revealed that each author thinks (...) his own view is amply supported by both theory and empirical evidence. Further reflection has revealed that the differences in opinion may start with the different disciplines in which we work: evolutionary ecology for Hendry and community ecology for Gonzalez. In the present paper, we each present devastating evidence supporting our own position and thus refuting that of the other. We then identify the critical differences that led to such opposing views. We close by combining our two perspectives into a common framework based on the adaptive landscape, and thereby suggest means by which to assess the prevalence and strength of adaptation. (shrink)

This research explores the adaptation strategies employed by Betawi traditional art performers in Jakarta amidst the challenges posed by the COVID-19 pandemic and the transition to the "New Normal Era." Through direct observations, comprehensive literature reviews, and structured questionnaires disseminated to 211 Betawi traditional art performers, this study investigates how performers have adjusted their practices to adhere to health protocols while continuing to preserve and promote ASEAN's intangible cultural heritage. Statistical analysis, including Structural Equation Modeling (SEM), was employed to assess (...) the relationship between performers' adaptability and various latent variables such as conformity, innovation, ritualism, retreatism, rebellion, authority (AUT), education (EDU), tools (TOOL), health protocols (HEAP), social media (SOCMED), and suitability of performance (SP). The results indicate that Betawi traditional art performers have demonstrated resilience and flexibility by leveraging digital platforms, embracing innovation, and diversifying their income sources. These adaptive strategies not only contribute to the preservation of intangible cultural heritage but also align with Sustainable Development Goals (SDGs) 8 (Decent Work and Economic Growth) and 11 (Sustainable Cities and Communities). Furthermore, the study underscores the broader implications of Betawi performers' adaptability for ASEAN countries, highlighting the promotion of cultural diversity, intercultural dialogue, and economic prosperity within the region. Overall, the findings emphasize the importance of supporting and sustaining traditional art forms in the face of evolving societal challenges, ultimately enriching the cultural landscape and fostering regional solidarity within ASEAN. (shrink)

This article identifies the types of legal issues that result from technological change and discusses the different institutions involved in resolving those problems. It demonstrates that, despite the focus on political solutions, other institutions also have a role to play in solving legal dilemmas presented by technological change. Legislation may not always be necessary and can cause problems, especially where a technology is likely to evolve further. Even where legislative solutions are necessary, it is important to factor in the role (...) played by other institutions when crafting legislation. (shrink)

Climate change intersecting with complex socio-economic and political processes has produced distinctive patterns of crisis migration. However there exists a significant gap in understanding and theorizing these forms of migration creating significant policy challenges. Using a case study of an interstate migrant settlement in Bengaluru, India this article unpacks migration as an adaptation strategy through the lens of emotions. The article offers significant insights into how emotions affect the choice of migration as an adaptation strategy and shapes the differential experiences (...) of risks and vulnerability for different groups of people. Emphasizing such relational aspects of migration, the article calls for more research that develops a nuanced understanding of the emotional landscapes of migrants across migration pathways. (shrink)

It is shown that complex adaptations are best modelled as discrete processes represented on directed weighted graphs. Such a representation captures the idea that problems of adaptation in evolutionary biology are problems in a discrete space, something that the conventional representations using continuous adaptive landscapes does not. Further, this representation allows the utilization of well-known algorithms for the computation of several biologically interesting results such as the accessibility of one allele from another by a specified number of point mutations, (...) the accessibility of alleles at a local maximum of fitness, the accessibility of the allele with the globally maximum fitness, etc. A reduction of a model due to Kauffman and Levin to such a representation is explicitly carried out and it is shown how this reduction clarifies the biological questions that are of interest. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Grand Manner Aesthetics in LandscapeFrom Canvas to CelluloidEmily E. Auger (bio)Popular films about the environment and related human and material resource issues, particularly colonialism, tend to enhance the appeal of their subject matter by aesthetically transforming it according to audience preferences and tastes. Such mediating strategies are perhaps too familiar to contemporary artists of all types who would prefer to work beyond the limits of what their readers or (...) viewers are prepared to tolerate as entertainment, but the particular emphases and accommodations made by film artists to convey messages about the environment are little changed from those strategies used by painters over the past three centuries to a similar end. The methods by which environmental issues are aestheticized in late-twentieth-century film is directly and historically related to those established for grand manner painters by Nicholas Poussin (1594-1665) and taught at the French academy from the seventeenth through the nineteenth centuries. That these fundamentals were part of the training of artists who would be willing and able to enhance the glory of Louis XIV's absolutist monarchy seems not to have undermined the popular enthusiasm their association with the "classical" past generated outside of France. Thus, the grand manner ideal was repeated, elaborated, and adapted by subsequent British and American artists, teachers, and aestheticians, both amateur and professional, including Joshua Reynolds (1723-92), president of the British academy; theoretician Edmund Burke (1729-97); and such American painters as Benjamin West (1738-1820), Thomas Cole (1801-48), Frederic Church (1826-1900), and Albert Bierstadt (1830-1902).Examples of filmic adaptations of grand manner aesthetics considered here include English director John Boorman's The Emerald Forest (1985) and Anglo-French director Roland Joffé's The Mission (1986), both British productions; Kevin Costner's Dances with Wolves (1990) and John McTiernan's [End Page 96] Medicine Man (1992), both American productions with American directors; and Australian director Bruce Beresford's Black Robe (1991), a Canadian/Australian production based on Irish-born, Canadian novelist Brian Moore's best-selling novel of the same title (1985). While it might be argued that these films merely show the adaptation of academy-based grand manner ideals and principles to new imperialist interests, this article demonstrates how they educate and draw public sympathy to global environmental concerns, albeit with reference to a recognizably Western aesthetic tradition. Thus, the interest of this study to educators and students of the visual arts is twofold: first, it demonstrates the continued adaptation and application of aesthetic principles originally developed in the seventeenth century to a technology-based medium; and second, it shows how those aesthetic principles are currently applied in film to direct and modulate public opinion on matters well beyond the domain of pure or theoretical aesthetics.The grand manner aesthetic, first defined with reference to seventeenth-century painting and still apparent in twentieth-century film, is largely attributable to Poussin since he was an artist who wrote—and wrote well—about his understanding of artistic quality and priorities. He was deeply committed to classicism; he thought the elements of a painting should be idealized rather than realistic and particularized, that those elements should be clearly delineated in a linear manner, that exotic subjects and excessive color should be avoided as both appeal too much to the senses and not enough to the mind, and that figures should always predominate over landscape. Poussin's ideals became the model for students training at the French Academy, an institution officially formed in 1648 under the direct control of the government. Aspiring academicians were exhorted to produce images that were usually composites of the better, and sometimes imagined, aspects of the appearance, character, and deeds of the fictional and historical people, events, and locations that were their subjects. They were never allowed to forgot the hierarchy of value that placed genre painting forever below history painting, yet it cannot have escaped their notice that a certain number of well-executed examples of the lowly still life, domestic interior, and picturesque landscape on the exhibition walls made the "grandness" of more ambitious works more apparent by contrast.The French Academy soon became the envy of foreign upper-level bureaucrats cognizant... (shrink)

Religion is not an evolutionary adaptation per se, but a recurring by-product of the complex evolutionary landscape that sets cognitive, emotional and material conditions for ordinary human interactions. Religion involves extraordinary use of ordinary cognitive processes to passionately display costly devotion to counterintuitive worlds governed by supernatural agents. The conceptual foundations of religion are intuitively given by task-specific panhuman cognitive domains, including folkmechanics, folkbiology, folkpsychology. Core religious beliefs minimally violate ordinary notions about how the world is, with all of (...) its inescapable problems, thus enabling people to imagine minimally impossible supernatural worlds that solve existential problems, including death and deception. Here the focus is on folkpsychology and agency. A key feature of the supernatural agent concepts common to all religions is the triggering of an "Innate Releasing Mechanism," or “agency detector,” whose proper domain encompasses animate objects relevant to hominid survival - such as predators, protectors and prey - but which actually extends to moving dots on computer screens, voices in wind, faces on clouds. Folkpsychology also crucially involves metarepresentation, which makes deception possible and threatens any social order; however, these same metacognitive capacities provide the hope and promise of open-ended solutions through representations of counterfactual supernatural worlds that cannot be logically or empirically verified or falsified. Because religious beliefs cannot be deductively or inductively validated, validation occurs only by ritually addressing the very emotions motivating religion. Cross-cultural experimental evidence encourages these claims. (shrink)

Digital transformation doesn't just raise ethical issues, it-in itself-is an ethical shift. Business leaders today are struggling to manage conflicting imperatives, those of the emerging digital world and those of the bureaucratic world of the past. The act of digital transformation requires a deep change in the moral outlook and ethical assumptions of a business. But how do we get there? Enterprise strategist and author Mark Schwartz shows how we need to learn to think differently about relationships with customers and (...) employees. That the ethics of digital transformation is a matter of cultivating and applying virtues rather than applying rules. Ethics is not just a matter of refraining from doing bad things. It's a matter of building the world we want, and it's the job of company executives. Featuring a chapter on bullshit, a handy chart of excuses for bad behavior, and Schwartz's typically paradoxical blend of deep insight and pasta jokes, this book guides business leaders as they struggle to adapt their bureaucratic framework of ethics to the emerging landscape of the digital world. By the end of the book, business leaders will rethink what it takes to be an ethical organization. (shrink)

Aiming at the shortcomings of standard particle swarm optimization algorithms that easily fall into local optimum, this paper proposes an optimization algorithm that improves quantum behavioral particle swarms. Aiming at the problem of premature convergence of the particle swarm algorithm, the evolution speed of individual particles and the population dispersion are used to dynamically adjust the inertia weights to make them adaptive and controllable, thereby avoiding premature convergence. At the same time, the natural selection method is introduced into the (...) traditional position update formula to maintain the diversity of the population, strengthen the global search ability of the LTQPSO algorithm, and accelerate the convergence speed of the algorithm. The improved LTQPSO algorithm is applied to landscape trail path planning, and the research results prove the effectiveness and feasibility of the algorithm. (shrink)

_ This scholarly article delves into the transformative impact of technological disruptions on the contemporary labor market and explores the necessary adaptations for individuals, businesses, and policymakers. The article examines emerging trends, challenges, and opportunities in the evolving landscape of work, offering insights into how stakeholders can navigate the complex interplay between technology and employment._.

We present here the hypothesis that the unique microenvironmental pH landscape of acid‐base transporting epithelia is an important factor in development of epithelial cancers, by rendering the epithelial and stromal cells pre‐adapted to the heterogeneous extracellular pH (pHe) in the tumor microenvironment. Cells residing in organs with net acid‐base transporting epithelia such as the pancreatic ductal and gastric epithelia are exposed to very different, temporally highly variable pHe values apically and basolaterally. This translates into spatially and temporally non‐uniform intracellular (...) pH (pHi) patterns. Disturbed pHe‐ and pHi‐homeostasis contributes to essentially all hallmarks of cancer. Our hypothesis, that the physiological pHe microenvironment in acid‐base secreting epithelia shapes cancers arising in these tissues, can be tested using novel imaging tools. The acidic tumor pHe in turn might be exploited therapeutically. Pancreatic cancers are used as our prime example, but we propose that this concept is also relevant for other cancers of acid‐base transporting epithelia. (shrink)

Despite its widespread existence, the adaptive role of aneuploidy (the abnormal state of having an unequal number of different chromosomes) has been a subject of debate. Cellular aneuploidy has been associated with enhanced resistance to stress, whereas on the organismal level it is detrimental to multicellular species. Certain aneuploid karyotypes are deleterious for specific environments, but karyotype diversity in a population potentiates adaptive evolution. To reconcile these paradoxical observations, this review distinguishes the role of aneuploidy in cellular versus (...) organismal evolution. Further, it proposes a population genetics perspective to examine the behavior of aneuploidy on a populational versus individual level. By altering the copy number of a significant portion of the genome, aneuploidy introduces large phenotypic leaps that enable small cell populations to explore a wide phenotypic landscape, from which adaptive traits can be selected. The production of chromosome number variation can be further increased by stress‐ or mutation‐induced chromosomal instability, fueling rapid cellular adaptation. (shrink)

Ecological and social systems are complex and entwined. Complex social-ecological systems interact in a multitude of ways at many spatial scales across time. Their interactions can contribute both positive and negative consequences in terms of sustainability and the context in which they exist affecting future landscape change. Non-metropolitan landscapes are the major theatre of interactions where large-scale alteration occurs precipitated by local to global forces of economic, social, and environmental change. Such regional landscape effects are critical also to (...) local natural resource and social sustainability. The institutions contributing pressures and responses consequently shape future landscapes and in turn influence how social systems, resource users, governments, and policy makers perceive those landscapes and their future. Science and policy for "sustainable" futures need to be integrated at the applied "on-ground" level where products and effects of system interactions are fully included, even if unobserved. Government agencies and funding bodies often consider such research as "high-risk". This paper provides some examples of interdisciplinary research that has provided a level of holistic integration through close engagement with landholders and communities or through deliberately implementing integrative and innovative on-ground experimental models. In retrospect, such projects have to some degree integrated through spatial synthesis, policy analysis, and institutional arrangements that are relevant locally and acceptable in business, as well as at broader levels of government and geography. This has provided transferable outcomes that can contribute real options and adaptive capacity for suitable positive futures. (shrink)

In complexity theory, both the brain and consciousness are understood as trophic systems—they consume metabolic energy when they function. Complex systems are dynamic and nonlinear and comprise diverse entities that are interdependent and interconnected in such a way that information is shared and that entities adapt to one another. Some natural complex systems are complex adaptive systems (CAS), which are sensitive to change in relation to their environments and are often chaotic. Consciousness and the neural systems mediating consciousness may (...) be modeled as CAS and, more specifically, as intelligent complex adaptive systems (ICAS), where intelligence means that a nervous system can solve problems successfully by intervening between sensory input and behavioral output. Evolution of any ICAS will result in emergent properties, particularly advanced brains. Two processes are involved in integrating experience and knowledge: the effort after meaning and the effort after truth. These efforts are mediated by the predominance given to direct experience presented to the brain's sensorium and modeling processes mediated by higher cognitive functions. Understanding consciousness as an ICAS has profound repercussions in how anthropology conceives of culture. (shrink)

The challenges of the Anthropocene are growing ever more complex and uncertain, underpinned by the emergence of systemic risks. At the same time, the landscape of risk governance has become compartmentalised and siloed, characterized by non-overlapping activities, competing scientific discourses, and distinct responsibilities distributed across diverse public and private bodies. Operating across scales and disciplines, actors tend to work in silos which constitute critical gaps within the interface of science, policy, and practice. Yet, increasingly complex and ‘wicked’ problems require (...) holistic solutions, multi-scalar communication, coordination, collaboration, data interoperability, funding, and stakeholder engagement. To address these problems in a real-world context, we present the Risk-Tandem framework for bridging theory and practice; to guide and structure the integration of disaster risk management (DRM), climate change adaptation (CCA) and systemic risk management through a process of transdisciplinary knowledge co-production. Advancing the frontiers of knowledge in this regard, The Risk-Tandem framework combines risk management approaches and tools with iterative co-production processes as a cornerstone of its implementation, in efforts to promote the co-design of fit-for-purpose solutions, methods and approaches contributing toward strengthened risk governance alongside stakeholders. The paper outlines how the framework is developed, applied, and further refined within selected case study regions, including Denmark, Germany, Italy and the Danube Region. (shrink)

The rapid rise of streaming platforms such as Netflix and Disney+ has fundamentally disrupted traditional Hollywood film financing models. This paper examines the financial impacts of these platforms on Hollywood's established funding mechanisms, highlighting how they have reshaped revenue streams, investment patterns, and risk management strategies. By leveraging data analytics and financial modelling, this study explores how traditional studios and new media companies have adapted their financing strategies to align with the evolving digital landscape. Additionally, the paper delves into (...) the implications of these shifts for future film production and distribution, offering insights into how data-driven decision-making increasingly influences investment choices in the entertainment industry. Through a comprehensive analysis, this research provides a deeper understanding of the interplay between technology and finance in shaping the future of Hollywood. (shrink)

This paper gives a detailed narrative of a controversial empirical research in postwar population genetics, the analysis of the cytological polymorphisms of an Australian grasshopper, Moraba scurra. This research intertwined key technical developments in three research areas during the 1950s and 1960s: it involved Dobzhansky’s empirical research program on cytological polymorphisms, the mathematical theory of natural selection in two-locus systems, and the building of reliable estimates of natural selection in the wild. In the mid-1950s the cytologist Michael White discovered an (...) interesting case of epistasis in populations of Moraba scurra. These observations received a wide diffusion when theoretical population geneticist Richard Lewontin represented White’s data on adaptive topographies. These topographies connected the information on the genetic structure of these grasshopper populations with the formal framework of theoretical population genetics. As such, they appeared at the time as the most successful application of two-locus models of natural selection to an empirical study system. However, this connection generated paradoxical results: in the landscapes, all grasshopper populations were located on a ridge while they were expected to reach a peak. This puzzling result fueled years of research and triggered a controversy attracting contributors from Australia, the United States and the United Kingdom. While the original problem seemed, at first, purely empirical, the subsequent controversy affected the main mathematical tools used in the study of two-gene systems under natural selection. Adaptive topographies and their underlying mathematical structure, Wright’s mean fitness equations, were submitted to close scrutiny. Suspicion eventually shifted to the statistical machinery used in data analysis, reflecting the crucial role of statistical inference in applied population genetics. In the 1950s and 1960s, population geneticists were not simply in search for new generalizations about the evolutionary process and for new evidence about genetic variation: struggling against statistical artifacts, they were searching for reliable tests and descriptors to analyze their data. (shrink)

I consider recent uses of the notion of neutrality in evolutionary biology and ecology, questioning their relevance to the kind of explanation recently labeled ‘topological explanation’. Focusing on fitness landscapes and genotype-phenotype maps, I explore the explanatory uses of neutral subspaces, as modeled in two perspectives: hyperdimensional fitness landscapes and RNA sequence-structure maps. I argue that topological properties of such spaces account for features of evolutionary systems: respectively, capacity for adaptive evolution toward global optima and mutational robustness of genotypes. (...) Thus many models appealing to “neutral” manifolds provide topological alternatives to hypothetical mechanisms. (shrink)

Transhumance is a form of extensive livestock production that involves seasonal movements among ecological zones or landscape types. Rangeland-based transhumance constitutes an important social and economic relationship to nature in many regions of the world, including across the Western US. However, social and ecological drivers of change are reshaping transhumant practices, and managers must adapt to increased demands for public rangeland use. Specifically, concerns for wildlife conservation have led to reduced access to seasonal public lands grazing for western US (...) livestock producers. To understand how managers adapt to loss of grazing areas (called “seasonal ranges”) we create agroecological calendars from manager records spanning 35 years (1986–2021) at the US Sheep Experiment Station in Idaho and Montana, US. The calendars illustrate how a loss of winter and summer ranges after 2013 coincided with shifts in the operation’s adaptive strategies, leading to more grazing of fall crop residue and purchased winter feed, and reducing flexibility to move livestock to cope with variable forage conditions. These changes shifted the job duties and experiences of farm workers and managers, and raised several new questions related to sheep production and vegetation management outcomes that merit future research. Transhumant system transformation has implications for human relationships with nature, rural communities, sheep genetics, production, and vegetation communities. For livestock operations that rely on government-managed lands to sustain transhumant traditions, innovative forms of collaboration and social adaptation that help secure access to seasonal ranges will be as important as technological innovations to address biodiversity conservation, climate change adaptation, and food system sustainability issues that are reshaping access to grazing lands. (shrink)

Adaptation to changing and new environmental conditions is of fundamental importance to sustainability and requires concerted efforts amongst science, policy, and practice to produce solution-oriented knowledge. Joint knowledge production or co- production of knowledge has become increasingly popular terms to describe the process of scientists, policy makers and actors from the civil society coming together to cooperate in the production, dissemination, and application of knowledge to solve wicked problems such as climate change. Networks are particularly suited to produce knowledge in (...) a joint fashion. However, the process of joint knowledge production (JKP) in networks has rarely been examined. In this paper, we present a sketch of the adaptation network landscape and assess how joint knowledge production supports the development of solution-oriented knowledge in climate change adaptation networks. We conclude that the processes of JKP are diverse, complex, and highly dependent on the interests and roles of actors within the network. To keep such processes alive, signposts in form of analysis and intermediary products along the network lifetime should be positioned as means of stocktaking and monitoring for the future. (shrink)