Theories heralding the rise of network governance have dominated for a generation. Yet, empirical research suggests that claims for the transformative potential of networks are exaggerated. This ...topical and timely book takes a critical look at contemporary governance theory, elaborating a Gramscian alternative. It argues that, although the ideology of networks has been a vital element in the neoliberal hegemonic project, there are major structural impediments to accomplishing it. While networking remains important, the hierarchical and coercive state is vital for the maintenance of social order and integral to the institutions of contemporary governance. Reconsidering it from Marxist and Gramscian perspectives, the book argues that the hegemonic ideology of networks is utopian and rejects the claim that there has been a transformation from 'government' to 'governance'. This important book has international appeal and will be essential reading for scholars and students of governance, public policy, human geography, public management, social policy and sociology.
This paper explores neoliberalisation and its counter-currents through a six-case study of austerity urbanism in Spain and the UK. Applying Urban Regime Theory it highlights the role of urban ...politics in driving, variegating and containing neoliberalism since the 2008 crash. Variegated austerity regimes contribute to strengthening neoliberalism, but with limits. Welfarism survives austerity in felicitous circumstances. And, where contentious politics thrive, as in Spain, it holds out the potential for a broader challenge to neoliberalism. In contrast, austerity regimes in the UK cities are strongly embedded. The legacies of past struggles, and differing local and regional traditions form an important part of the explanation for patterns of neoliberalisation, hybridization and contestation.
ABSTRACT
The use of phylogenies in ecology is increasingly common and has broadened our understanding of biological diversity. Ecological sub‐disciplines, particularly conservation, community ecology ...and macroecology, all recognize the value of evolutionary relationships but the resulting development of phylogenetic approaches has led to a proliferation of phylogenetic diversity metrics. The use of many metrics across the sub‐disciplines hampers potential meta‐analyses, syntheses, and generalizations of existing results. Further, there is no guide for selecting the appropriate metric for a given question, and different metrics are frequently used to address similar questions. To improve the choice, application, and interpretation of phylo‐diversity metrics, we organize existing metrics by expanding on a unifying framework for phylogenetic information.
Generally, questions about phylogenetic relationships within or between assemblages tend to ask three types of question: how much; how different; or how regular? We show that these questions reflect three dimensions of a phylogenetic tree: richness, divergence, and regularity. We classify 70 existing phylo‐diversity metrics based on their mathematical form within these three dimensions and identify ‘anchor’ representatives: for α‐diversity metrics these are PD (Faith's phylogenetic diversity), MPD (mean pairwise distance), and VPD (variation of pairwise distances). By analysing mathematical formulae and using simulations, we use this framework to identify metrics that mix dimensions, and we provide a guide to choosing and using the most appropriate metrics. We show that metric choice requires connecting the research question with the correct dimension of the framework and that there are logical approaches to selecting and interpreting metrics. The guide outlined herein will help researchers navigate the current jungle of indices.
Seed masting, a reproductive strategy characterized by variable and synchronous investment in reproduction among years, has attracted much attention. Masting trees incur a cost in delayed ...reproduction, and thus masting requires an ecological or evolutionary explanation. The two broad causal mechanisms to explain seed masting are resource availability and economies of scale (EOS); the former assumes reproductive investment simply covaries with environment, the latter suggests an adaptive advantage. Two of the most commonly proposed EOS for masting are predator satiation and pollination efficiency. Here we suggest an additional EOS: pathogen escape. We borrow from the disease ecology literature to describe alternative models of pathogen-mediated masting. By comparing and contrasting their ecological dynamics, we show how predator satiation and pathogen escape may favour masting through similar mechanisms of mass-action interactions and temporal delays. However, pathogen- and predator-mediated dynamics may also diverge as a result of host epidemiological structure and the spatial scale of the interaction. We propose that pathogen escape should be considered among the list of putative mechanisms to help explain the many diverse observations of masting across space and phylogeny.
In this Essay, Davies and MacPherson propose that pathogen escape should be considered among the possible mechanisms to help explain masting.
Drawing from neo-Gramscian theory, the paper explores how urban austerity governance mediates crises of neoliberal hegemony. Focusing on the decade after the Global Economic Crisis of 2008–2009, it ...compares four European cities disclosing five intersecting characteristics of urban political economy that contributed to sustaining and disrupting austere neoliberalism. Austere neoliberalism was sustained through three characteristics: economic rationalism, state revanchism and weak counter-hegemony, but undermined by both weakening hegemony and the combustibility and generativity of urban struggles. Hence, although state revanchism is a prominent feature of urban politics, and novel counter-hegemonic forms are elusive, struggles for equality and solidarity remain contagious, tenacious and vibrant. Urban governance is a crucial arena for studying the interregnum, signposting multiple ways in which neoliberalism survives, mutates and dies.
ABSTRACT
We examine the connection between the properties of the circumgalactic medium (CGM) and the quenching and morphological evolution of central galaxies in the EAGLE and IllustrisTNG ...simulations. The simulations yield very different median CGM mass fractions, fCGM, as a function of halo mass, M200, with low-mass haloes being significantly more gas-rich in IllustrisTNG than in EAGLE. Nonetheless, in both cases scatter in fCGM at fixed M200 is strongly correlated with the specific star formation rate and the kinematic morphology of central galaxies. The correlations are strongest for ∼L⋆ galaxies, corresponding to the mass scale at which AGN feedback becomes efficient. This feedback elevates the CGM cooling time, preventing gas from accreting on to the galaxy to fuel star formation, and thus establishing a preference for quenched, spheroidal galaxies to be hosted by haloes with low fCGM for their mass. In both simulations, fCGM correlates negatively with the host halo’s intrinsic concentration, and hence with its binding energy and formation redshift, primarily because early halo formation fosters the rapid early growth of the central black hole (BH). This leads to a lower fCGM at fixed M200 in EAGLE because the BH reaches high accretion rates sooner, whilst in IllustrisTNG it occurs because the central BH reaches the mass threshold at which AGN feedback is assumed to switch from thermal to kinetic injection earlier. Despite these differences, there is consensus from these state-of-the-art simulations that the expulsion of efficiently cooling gas from the CGM is a crucial step in the quenching and morphological evolution of central galaxies.
Native biodiversity decline and non-native species spread are major features of the Anthropocene. Both processes can drive biotic homogenization by reducing trait and phylogenetic differences in ...species assemblages between regions, thus diminishing the regional distinctiveness of biotas and likely have negative impacts on key ecosystem functions. However, a global assessment of this phenomenon is lacking. Here, using a dataset of >200,000 plant species, we demonstrate widespread and temporal decreases in species and phylogenetic turnover across grain sizes and spatial extents. The extent of homogenization within major biomes is pronounced and is overwhelmingly explained by non-native species naturalizations. Asia and North America are major sources of non-native species; however, the species they export tend to be phylogenetically close to recipient floras. Australia, the Pacific and Europe, in contrast, contribute fewer species to the global pool of non-natives, but represent a disproportionate amount of phylogenetic diversity. The timeline of most naturalisations coincides with widespread human migration within the last ~500 years, and demonstrates the profound influence humans exert on regional biotas beyond changes in species richness.
New municipalism in Spain arose from a major political wave, now in a period of crisis and electoral retreat. This paper applies a regime-theoretic framework to analyse new municipalist governance in ...two smaller city cases: A Coruña and Santiago de Compostela. It argues that whilst new municipalist electoral victories inaugurated a crisis for established regimes, the crucial weakness was that they did not consolidate new urban regimes. Municipalists faced severe governability challenges linked to the enduring power of older urban regimes. The paper suggests that this is explained by problems in establishing regime incumbency, the consolidation of the necessary governing capacity by a resource coalition to deliver its agenda and succeed politically. Although established regimes were weakened enough to lose elections, they maintained considerable capacity to constrain the municipalist project and shape urban governance, a significant degree of incumbency. This ultimately enabled them to recover office in 2019. We argue that a critical regime-theoretical perspective assists in understanding the wider crisis of Spanish municipalism and the multi-scalar struggle for hegemony as it plays out in the local state arena.
Global change has become a central focus of modern biology. Yet, our knowledge of how anthropogenic drivers affect biodiversity and natural resources is limited by a lack of biological data spanning ...the Anthropocene. We propose that the hundreds of millions of plant, fungal and animal specimens deposited in natural history museums have the potential to transform the field of global change biology. We suggest that museum specimens are underused, particularly in ecological studies, given their capacity to reveal patterns that are not observable from other data sources. Increasingly, museum specimens are becoming mobilized online, providing unparalleled access to physiological, ecological and evolutionary data spanning decades and sometimes centuries. Here, we describe the diversity of collections data archived in museums and provide an overview of the diverse uses and applications of these data as discussed in the accompanying collection of papers within this theme issue. As these unparalleled resources are under threat owing to budget cuts and other institutional pressures, we aim to shed light on the unique discoveries that are possible in museums and, thus, the singular value of natural history collections in a period of rapid change.This article is part of the theme issue 'Biological collections for understanding biodiversity in the Anthropocene'.
When communities are assembled through processes such as filtering or limiting similarity acting on phylogenetically conserved traits, the evolutionary signature of those traits may be reflected in ...patterns of community membership. We show how the model of trait evolution underlying community-structuring traits can be inferred from community membership data using both a variation of a traditional eco-phylogenetic metric-the mean pairwise distance (MPD) between taxa-and a recent machine learning tool, Convolutional Kitchen Sinks (CKS). Both methods perform well across a range of phylogenetically informative evolutionary models, but CKS outperforms MPD as tree size increases. We demonstrate CKS by inferring the evolutionary history of freeze tolerance in angiosperms. Our analysis is consistent with a late burst model, suggesting freeze tolerance evolved recently. We suggest that multiple data types that are ordered on phylogenies, such as trait values, species interactions, or community presence/absence, are good candidates for CKS modeling because the generative models produce structured differences between neighboring points that CKS is well-suited for. We introduce the R package kitchen to perform CKS for generic application of the technique.
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