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  1. null (Ed.)
    China is positioning itself as a global leader in both renewable energy research, development, and deployment, and fossil fuel investment, exploration, and consumption. The newly merged mega-company, China Energy Investment Corp., has agreed to invest an unprecedented $83.7 billion into shale gas, power, and chemical projects in West Virginia. This decision comes after a visit to China by the United States’ President Trump, during which he secured professed commitments for over $250 billion in energy investments across the United States. While investment and dispossession in Appalachia have long been international in scope, the scale of this investment, as well as its particular political-historical context, makes this case unique. This paper analyzes two key processes central to this conjuncture in West Virginia’s recent history. First, building on recent scholarship, it argues that the ways in which the social and environmental costs of meeting China’s energy needs are increasingly being externalized into global “sacrifice zones” at global scales, even as China is making massive domestic investments in renewable energy, may constitute a sort of regional “socioecological fix” to the environmental effects of capitalist development. Second, via a consideration of Gaventa’s classic and more recent analyses of power and powerlessness in an Appalachian coal community, it explores why and how political assent to such development—which seems to reprise so many historical patterns that local critics decry—is secured in West Virginia. In doing so, it pays particular attention to the ways in which these familiar processes are playing out in a distinctive contemporary context, one characterized by a combination of populist and authoritarian politics that, in the United States, have touted false promises to “bring back coal” and rejuvenate a struggling local economy, and in China have led an authoritarian state to maintain economic growth for the nation at all costs. 
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  2. null (Ed.)
    Diatoms are major contributors to global primary production and their populations in the modern oceans are affected by availability of iron, nitrogen, phosphate, silica, and other trace metals, vitamins, and infochemicals. However, little is known about the role of phosphorylation in diatoms and its role in regulation and signaling. We report a total of 2759 phosphorylation sites on 1502 proteins detected in Phaeodactylum tricornutum. Conditionally phosphorylated peptides were detected at low iron (n = 108), during the diel cycle (n = 149), and due to nitrogen availability (n = 137). Through a multi-omic comparison of transcript, protein, phosphorylation, and protein homology, we identify numerous proteins and key cellular processes that are likely under control of phospho-regulation. We show that phosphorylation regulates: (1) carbon retrenchment and reallocation during growth under low iron, (2) carbon flux towards lipid biosynthesis after the lights turn on, (3) coordination of transcription and translation over the diel cycle and (4) in response to nitrogen depletion. We also uncover phosphorylation sites for proteins that play major roles in diatom Fe sensing and utilization, including flavodoxin and phytotransferrin (ISIP2A), as well as identify phospho-regulated stress proteins and kinases. These findings provide much needed insight into the roles of protein phosphorylation in diel cycling and nutrient sensing in diatoms. 
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  3. null (Ed.)
    To meet the ambitious objectives of biodiversity and climate conventions, the international community requires clarity on how these objectives can be operationalized spatially and how multiple targets can be pursued concurrently. To support goal setting and the implementation of international strategies and action plans, spatial guidance is needed to identify which land areas have the potential to generate the greatest synergies between conserving biodiversity and nature’s contributions to people. Here we present results from a joint optimization that minimizes the number of threatened species, maximizes carbon retention and water quality regulation, and ranks terrestrial conservation priorities globally. We found that selecting the top-ranked 30% and 50% of terrestrial land area would conserve respectively 60.7% and 85.3% of the estimated total carbon stock and 66% and 89.8% of all clean water, in addition to meeting conservation targets for 57.9% and 79% of all species considered. Our data and prioritization further suggest that adequately conserving all species considered (vertebrates and plants) would require giving conservation attention to ~70% of the terrestrial land surface. If priority was given to biodiversity only, managing 30% of optimally located land area for conservation may be sufficient to meet conservation targets for 81.3% of the terrestrial plant and vertebrate species considered. Our results provide a global assessment of where land could be optimally managed for conservation. We discuss how such a spatial prioritization framework can support the implementation of the biodiversity and climate conventions. 
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  4. Abstract

    Unraveling the relative impacts of climate, tectonics, and lithology on landscape evolution is complicated by the temporal and spatial scale over which observations are made. We use soil and desert pavement classification, longitudinal river profiles,10Be‐derived catchment mean modern and paleo‐erosion rates, and vertical incision rates to test whether, if we restrict our analyses to a spatial scale over which climate is relatively invariant, tectonic and lithologic factors will dominate the late Quaternary landscape evolution of the Calchaquí River Catchment, NW Argentina. We find that the spatial distribution of erosion rates, normalized channel steepness indices, and concavity indices reflect active tectonics and lithologic resistance. Knickpoints are spatially coincident with tectonic and/or lithologic discontinuities, indicating local base‐level control by faulting. Catchment mean erosion rates, ranging from 22.5 ± 2.6 to 121.9 ± 13.7 mm/kyr, and paleo‐erosion rates, ranging from 56+43/‐19to 105+60/‐33mm/kyr, are similar, possibly suggesting that Quaternary climate changes have not had a strong enough influence on erosion rates to be detected using cosmogenic10Be. However, punctuated abandonment of pediment and strath terraces at 43.6+15.0/‐11.6, 91.2+54.2/‐22.2, and 151+92.7/‐34.1ka and disparities between vertical incision rates and catchment mean erosion rates could suggest periods of landscape transience, possibly reflecting climate cyclicity. Our results emphasize the role of tectonic uplift and lithologic contrasts in shaping long‐term erosion rates and channel morphology at the relatively local scale of the Calchaqui River Catchment, in contrast to regional‐scale studies which find precipitation to exert the dominant control.

     
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