10,803 research outputs found

    Squeezed out: the consequences of riparian zone modification for specialist invertebrates

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    While anthropogenic biodiversity loss in fresh waters is among the most rapid of all ecosystems, impacts on the conservation of associated riparian zones are less well documented. Riverine ecotones are particularly vulnerable to the combined ‘squeeze’ between land-use encroachment, discharge regulation and climate change. Over a 3-year period of persistent low discharge in a regulated, temperate river system (River Usk, Wales, UK; 2009–2011), specialist carabid beetles on exposed riverine sediments (ERS) were used as model organisms to test the hypotheses that catchment-scale flow modification affects riparian zone invertebrates more than local habitat character, and that this modification is accompanied by associated succession among the Carabidae. Annual summer discharge during the study period was among the lowest of the preceding 12 years, affecting carabid assemblages. The richness of specialist ERS carabids declined, while generalist carabid species’ populations either increased in abundance or remained stable. Community composition also changed, as three (Bembidion prasinum, B. decorum and B. punctulatum) of the four dominant carabids typical of ERS increased in abundance while B. atrocaeruleum decreased. Despite significant inter-annual variation in habitat quality and the encroachment of ground vegetation, beetle assemblages more closely tracked reach-scale variations between sites or catchment-scale variations through time. These data from multiple sites and years illustrate how ERS Carabidae respond to broad-scale discharge variations more than local habitat character. This implies that the maintenance of naturally variable flow regimes is at least as important to the conservation of ERS and their dependent assemblages as are site-scale measures

    Pariah (2011): Coming Out In The Middle

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    Two new species of Varicus from Caribbean deep reefs, with comments on the related genus Pinnichthys (Teleostei, Gobiidae, Gobiosomatini, Nes subgroup)

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    Tropical deep reefs (~40–300 m) are diverse ecosystems that serve as habitats for diverse communities of reef-associated fishes. Deep-reef fish communities are taxonomically and ecologically distinct from those on shallow reefs, but like those on shallow reefs, they are home to a species-rich assemblage of small, cryptobenthic reef fishes, including many species from the family Gobiidae (gobies). Here we describe two new species of deep-reef gobies, Varicus prometheus sp. nov. and V. roatanensis sp. nov., that were collected using the submersible Idabel from rariphotic reefs off the island of Roatan (Honduras) in the Caribbean. The new species are the 11th and 12th species of the genus Varicus, and their placement in the genus is supported by morphological data and molecular phylogenetic analyses. Additionally, we also collected new specimens of the closely-related genus and species Pinnichthys aimoriensis during submersible collections off the islands of Bonaire and St. Eustatius (Netherland Antilles) and included them in this study to expand the current description of that species and document its range extension from Brazil into the Caribbean. Collectively, the two new species of Varicus and new records of P. aimoriensis add to our growing knowledge of cryptobenthic fish diversity on deep reefs of the Caribbean

    Suburban Neighbourhood Adaptation for a Changing Climate (SNACC) final report

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    The report presents findings from the Suburban Neighbourhood Adaptation to a Changing Climate (SNACC) project. The project tested the effectiveness, feasibility and acceptability of a range of adaptations to the physical environment (i.e. to homes, gardens, and public spaces) that could be used to both mitigate and adapt to climate change in the UK

    COHE 7232 - Health Promotion Planning

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    Introduces the student to the theory and application of planning and evaluation principles. Planning and evaluation skills will be developed that can be utilized in a variety of health-related settings. Familiarizes students with theories and models from the social and behavioral sciences and health education used in behavior change interventions. Emphasizes the planning and implementing of community health interventions at multiple ecological levels

    The Politics of Persuasion versus the Construction of Alternative Communities: Zines in the Writing Classroom

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    We discuss how studying and creating zines in our composition classes allows our students to negotiate and explore the complexities of writing without the compulsions of many of the politically problematic commonplaces of composition pedagogy. We use zines to examine the unique ways in which their rhetorical devices address conflicts around questions of audience and diversity, as well as the particular questions that the zines raise about the politics of persuasion, our own writing practices, writing strategies that the zines suggest to us, and the construction of alternative communities

    Repair Matters

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    Repair has visibly come to the fore in recent academic and policy debates, to the point that ‘repair studies’ is now emerging as a novel focus of research. Through the lens of repair, scholars with diverse backgrounds are coming together to rethink our relationships with the human-made matters, tools and objects that are the material mesh in which organisational life takes place as a political question. This special issue is interested to map the ways that repair can contribute to organisational models alternative to those centered around growth. In order to explore the politics of repair in the context of organization studies, the papers gathered here investigate issues such as: repair as a specific kind of care and socially reproductive labour; repair as a direct intervention into the cornerstones of capitalist economy, such as exchange versus use value, division of work and property relations; repair of infrastructures and their relation with the broader environment; and finally repair as the reflective practice of fixing the organizational systems and institutional habits in which we dwell. What emerges from the diversity of experiences surveyed in this issue is that repair manifests itself as both a regime of practice and counter-conduct that demand an active and persistent engagement of practitioners with the systemic contradictions and power struggles shaping our material world

    Precarious Positions: Toward a Theory and Analysis of Rhetorical Vulnerability

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    In this project, I develop a framework for treating rhetoric as a system for managing vulnerabilities to and through discourse. I contend that, through rhetoric, we are all put into a fundamentally precarious position, an unavoidable state of exposure to material, social, institutional, and rhetorical forces that work to condition us as both agents and audiences. Rhetoric is not simply something we use; it is also something that we respond to, something to which we are continuously exposed, whether we like it or not. There is, in other words, a necessary concern for vulnerability at the heart of rhetorical theory and praxis, which makes it possible to analyze rhetorical genres and situations in terms of how vulnerabilities are managed by rhetors, audiences, and others. In my first chapter, I examine current scholarship on vulnerability within and beyond rhetorical studies, ultimately arguing that vulnerability is both a universal condition and a unique position. I then apply this framework in my next chapter to the rhetoric of the Westboro Baptist Church (WBC), which I describe as “trolling rhetoric” designed to provoke responses rather than persuade audiences. In my third chapter, I examine how opponents of the WBC attempt to manage their rhetorical vulnerability through legal appeals to decorum. Finally, in my fourth chapter, I examine the citational composing methods of the God Loves Poetry movement, an online initiative that manages rhetorical vulnerability by redacting the WBC’s documents into poems
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