Leverage points for addressing marine and coastal pollution: A review.

Despite an increasing understanding of the issue of marine pollution, humanity continues on a largely unsustainable trajectory. This study aimed to identify and classify the range of scientific studies and interventions to address coastal and marine pollution. We reviewed 2417 scientific papers published between 2000 and 2018, 741 of which we analysed in depth. To classify pollution interventions, we applied the systems-oriented concept of leverage points, which focuses on places to intervene in complex systems to bring about systemic change. We found that pollution is largely studied as a technical problem and fewer studies engage with pollution as a systemic social-ecological issue. While recognising the importance of technical solutions, we highlight the need to focus on under-researched areas pertaining to the deeper drivers of pollution (e.g. institutions, values) which are needed to fundamentally alter system trajectories.

Long necks enhance and constrain foraging capacity in aquatic vertebrates.

Highly specialized diving birds display substantial dichotomy in neck length with, for example, cormorants and anhingas having extreme necks, while penguins and auks have minimized necks. We attached acceleration loggers to Imperial cormorants Phalacrocorax atriceps and Magellanic penguins Spheniscus magellanicus, both foraging in waters over the Patagonian Shelf, to examine the difference in movement between their respective heads and bodies in an attempt to explain this dichotomy. The penguins had head and body attitudes and movements that broadly concurred throughout all phases of their dives. By contrast, although the cormorants followed this pattern during the descent and ascent phases of dives, during the bottom (foraging) phase of the dive, the head angle differed widely from that of the body and its dynamism (measured using vectorial dynamic acceleration) was over four times greater. A simple model indicated that having the head on an extended neck would allow these cormorants to half the energy expenditure that they would expend if their body moved in the way their heads did. This apparently energy-saving solution is likely to lead to greater heat loss though and would seem tenable in slow-swimming species because the loss of streamlining that it engenders would make it detrimental for fast-swimming taxa such as penguins.

La jibarización del logos: cómo el reduccionismo médico puede matar / The jibarization of logos: how medical reductionism can kill

Resumen: En las últimas décadas se ha desencadenado una verdadera proliferación disciplinar y subdisciplinar tanto en el ámbito médico como en la ciencia en general. Esta tendencia podría ser parcialmente explicada por dos hechos diacrónicos e interconectados dialécticamente: la profundización de la división técnica, social e internacional del trabajo del mundo capitalista globalizado, y el triunfo del Programa Reduccionista, desarrollado principalmente por el empirismo lógico del Círculo de Viena. El presente trabajo tiene por objetivo ahondar el debate sobre los intrincados vínculos entre la medicina, la biología, la filosofía, el reduccionismo y el pensamiento complejo, a partir de la utilización de dos ejemplos: un informe de caso de la medicina actual y la situación experimentada por un afamado científico norteamericano, Stephen Jay Gould, a propósito de su primer cáncer, un mesotelioma abdominal. Hemos observado cómo los dos hechos históricos mencionados han venido operando como una súper estructura de ''pinza'', descuartizando y comprimiendo al mismo tiempo al objeto a conocer, a las teorías que permiten su estudio y al propio sujeto que recibe el conocimiento. Esta jibarización del logos constituye un verdadero problema para la salud pública desde el momento en que impacta, omnipresente, en el modelo médico hegemónico actual, propiciando actitudes potencialmente peligrosas para los diversos integrantes de los sistemas de salud.

Abstract: In recent decades, a disciplinary and subdisciplinary proliferation has triggered both in the medical fields and science in general. This trend may be partially explained by two diachronic, dialectically interconnected facts: the deepening of technical, social and international division of labor in the globalized capitalist world, and the triumph of the reductionist program, mainly developed by the logical empiricism of the Vienna Circle. This paper aims to deepen the debate on the intricate links between medicine, biology, philosophy, reductionism and complex thought, by using two examples: a case report of current medicine and the situation experienced by a famous American scientist, Stephen Jay Gould, about his first cancer, an abdominal mesothelioma. We have witnessed how the two above-mentioned historical facts have been operating as a super-structure like a pair of ''tweezers'', dismembering and compressing at the same moment the object of knowledge, the theories that allow their study, and the subject that receives the knowledge. This jibarization of logos is a real problem for public health, from the moment that it impacts, omnipresent, in the actual hegemonic medical model, leading to potentially dangerous attitudes to the various components of health systems.

[The jibarization of logos: how medical reductionism can kill]. / La jibarización del logos: cómo el reduccionismo médico puede matar.

In recent decades, a disciplinary and subdisciplinary proliferation has triggered both in the medical fields and science in general. This trend may be partially explained by two diachronic, dialectically interconnected facts: the deepening of technical, social and international division of labor in the globalized capitalist world, and the triumph of the reductionist program, mainly developed by the logical empiricism of the Vienna Circle. This paper aims to deepen the debate on the intricate links between medicine, biology, philosophy, reductionism and complex thought, by using two examples: a case report of current medicine and the situation experienced by a famous American scientist, Stephen Jay Gould, about his first cancer, an abdominal mesothelioma. We have witnessed how the two above-mentioned historical facts have been operating as a super-structure like a pair of "tweezers", dismembering and compressing at the same moment the object of knowledge, the theories that allow their study, and the subject that receives the knowledge. This jibarization of logos is a real problem for public health, from the moment that it impacts, omnipresent, in the actual hegemonic medical model, leading to potentially dangerous attitudes to the various components of health systems.

A spherical-plot solution to linking acceleration metrics with animal performance, state, behaviour and lifestyle.

BACKGROUND: We are increasingly using recording devices with multiple sensors operating at high frequencies to produce large volumes of data which are problematic to interpret. A particularly challenging example comes from studies on animals and humans where researchers use animal-attached accelerometers on moving subjects to attempt to quantify behaviour, energy expenditure and condition. RESULTS: The approach taken effectively concatinated three complex lines of acceleration into one visualization that highlighted patterns that were otherwise not obvious. The summation of data points within sphere facets and presentation into histograms on the sphere surface effectively dealt with data occlusion. Further frequency binning of data within facets and representation of these bins as discs on spines radiating from the sphere allowed patterns in dynamic body accelerations (DBA) associated with different postures to become obvious. METHOD: We examine the extent to which novel, gravity-based spherical plots can produce revealing visualizations to incorporate the complexity of such multidimensional acceleration data using a suite of different acceleration-derived metrics with a view to highlighting patterns that are not obvious using current approaches. The basis for the visualisation involved three-dimensional plots of the smoothed acceleration values, which then occupied points on the surface of a sphere. This sphere was divided into facets and point density within each facet expressed as a histogram. Within each facet-dependent histogram, data were also grouped into frequency bins of any desirable parameters, most particularly dynamic body acceleration (DBA), which were then presented as discs on a central spine radiating from the facet. Greater radial distances from the sphere surface indicated greater DBA values while greater disc diameter indicated larger numbers of data points with that particular value. CONCLUSIONS: We indicate how this approach links behaviour and proxies for energetics and can inform our identification and understanding of movement-related processes, highlighting subtle differences in movement and its associated energetics. This approach has ramifications that should expand to areas as disparate as disease identification, lifestyle, sports practice and wild animal ecology. UCT Science Faculty Animal Ethics 2014/V10/PR (valid until 2017).

Post-mortem findings in southern right whales Eubalaena australis at Península Valdés, Argentina, 2003-2012.

Between 2003 and 2012, 605 southern right whales (SRW; Eubalaena australis) were found dead along the shores of Península Valdés (PV), Argentina. These deaths included alarmingly high annual losses between 2007 and 2012, a peak number of deaths (116) in 2012, and a significant number of deaths across years in calves-of-the-year (544 of 605 [89.9%]; average = 60.4 yr(-1)). Post-mortem examination and pathogen testing were performed on 212 whales; 208 (98.1%) were calves-of-the-year and 48.0% of these were newborns or neonates. A known or probable cause of death was established in only a small number (6.6%) of cases. These included ship strike in a juvenile and blunt trauma or lacerations (n = 5), pneumonia (n = 4), myocarditis (n = 2), meningitis (n = 1), or myocarditis and meningitis (n = 1) in calves. Ante-mortem gull parasitism was the most common gross finding. It was associated with systemic disease in a single 1-2 mo old calf. Immunohistochemical labeling for canine distemper virus, Toxoplasma gondii and Brucella spp., and PCR for cetacean morbillivirus (CeMV), influenza A, and apicomplexan protozoa were negative on formalin-fixed, paraffin-embedded lung and brain samples from a subset of whales; PCR for Brucella spp. was positive in a newborn/neonate with pneumonia. Skin samples from whales with gull parasitism were PCR negative for CeMV, poxvirus, and papillomavirus. This is the first long-term study to investigate and summarize notable post-mortem findings in the PV SRW population. Consistent, significant findings within or between years to explain the majority of deaths and those in high-mortality years remain to be identified.