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Paleoecological reconstructions provide valuable insights into the impacts of environmental change on key functions of wetland ecosystems. Here, we integrate biological and sedimentological proxies to provide a baseline of vegetation and hydrological change since the Middle Holocene at a riparian marsh, with the goal of informing wetland restoration within a regional biodiversity hotspot in the Great Lakes coastal zone. Four stages of wetland development are identified, reflecting the combined impacts of Lake Erie fluctuations, fluvial processes, regional paleoclimate, and anthropogenic influence. Wetland establishment took place ∼6000 cal yr BP during a Lake Erie high stand, and pollen assemblages indicate that the site was initially a forested wetland. Subsequently, water levels remained elevated as a transition to an emergent marsh with silty, organic-rich sediments took place ∼5300 cal yr BP. Once water levels stabilized in the Late Holocene, a thicket swamp established in sandier sediments, suggesting closer proximity to the meandering channel. The intensification of European settlement from 1850 CE marked a major transition, resulting from disturbances caused by land clearance and hydrological alterations, including higher rates of sediment accretion, novel diatom communities, and increases in herbaceous vegetation. These paleoecological records demonstrate the importance of considering whole-watershed measures in restoration planning, including controls on mineral sediment influxes, maintenance of local water tables, and management of invasive species producing high biomass.
Many argue that America’s punitive turn was the result of racial backlash to the Civil Rights Movement. Yet some have noted support among black people for the policies attributed to this backlash, citing the influence of rising crime on black voters and politicians. In this article we gather new evidence and examine what it implies. Public opinion data show that not just the white but also the black public became more punitive after the 1960s. Voting data from the House show that most black politicians voted punitively at the height of concern about crime. In addition, an analysis of federally mandated redistricting suggests that in the early 1990s, black political representation had a punitive impact at the state level. Together, our evidence suggests that crime had a profound effect on black politics. It also casts some doubt on the conventional view of the origins of mass incarceration.
We used AMS 14C dating to determine the age of the composite wedge formation in the Batagay Upper Sand unit. The composite wedges are interpreted as syngenetic structures; they have grown vertically upward with aggradation of the host sandy deposits. The formation of composite wedges in Upper Sand commenced no later than 38.3 cal ka BP and stopped not earlier than 25.5 cal ka BP in the northwestern part of the slump. In the formation of ice wedges within the Upper Sand, frost cracks extended to a depth of 5–7 m, surpassing the normal depth of 3–4 m observed in the Upper Ice Complex. The composite ice wedges in the Upper Sand formed at temperatures ranging from –47 to –54°C, as evidenced by the paleotemperature reconstruction of the isotope composition of the Upper Ice Complex’s ice wedges.
This paper assesses the rhetorical and lyrical qualities of the Cretan translation of Guarini’s Pastor Fido as O Bistikos Voskos, by analysing passages that either deviate notably from the original or are the invention of the unknown Cretan poet. Comparison of the two dramatic works sheds light on the translator’s tendency to add or expand lyrical passages, thus giving more extended and emphatic poetic expression to the heroes’ emotions and thoughts.
This article examines institutional fragmentation among key organisations in charge of Biafra’s struggle for independence since the year 2000. The article argues that contrary to the mainstream explanations, which attribute the split to the differences in tactics between organisations (Duruji 2012) or their relations with the state (Kalyvas 2008; Cunningham 2014), organisational cohesion is largely absent due to the struggle for power and resources among the leaders in charge of the organisations. Supported by the in-depth interviews with key informants, we treat Biafran secessionist organisations as business models through which leading politicians act as political entrepreneurs and engage in predatory rent-seeking practices to maximise profits and power through the institutions that represent the collective struggle.
The combination of a right aortic arch with a vascular ring and coarctation of the aorta is a rare association, presenting a unique management challenge for the primary team. A thorough literature review revealed only seven published case reports, with three cases reported in the neonatal period with similar anatomy. This distinctive anatomy inspires inquiry into the development of coarctation in the context of a right aortic arch and vascular ring, as well as the best approach to surgical management. We encountered a similar case in a neonate with a combination of these malformations and a unique aortic arch branching pattern. Cardiac CT was instrumental in the diagnosis and surgical planning. This article reviews the variations in anatomy, clinical presentation, imaging findings, and management challenges encountered in the reported cases. This comprehensive review aims to assist the primary team in making informed decisions when treating these complex patients.
Understanding biotic responses to environmental changes will help identify extinction risks and direct conservation efforts to mitigate negative effects associated with anthropogenic-induced environmental changes. Here we use the Quaternary fossil record of mole salamanders (Ambystoma) from the southwestern United States and northern Mexico to reveal geographic patterns of extirpation since the Pleistocene. Ambystoma are known to have previously inhabited regions of central Texas on the Edwards Plateau; however, they are largely absent from the region today. We used a well-dated fossil record of Ambystoma from Hall’s Cave combined with other fossil sites in the region to deduce why Ambystoma was ultimately extirpated from the Edwards Plateau and to test hypotheses related to temperature-driven body-size changes in line with the temperature–size rule. We propose that Ambystoma was likely extirpated from the region due to changing temperature and precipitation regimes that caused increased mortality and disruptions to breeding and larval development. We found some support for decreased body size in Ambystoma with increased temperature during the late Pleistocene, suggesting that body size may be an important feature to monitor in modern populations of Ambystoma as salamanders become subjected to increasingly hotter temperatures in the coming decades.
Gay and Meier asked if a trisection diagram for the Gluck twist on a spun or twist-spun 2-knot in $S^4$ obtained by a certain method is standard. In this paper, we show that the trisection diagram for the Gluck twist on the spun $(p+1,p)$-torus knot is standard, where p is any integer greater than or equal to 2.
Garra gotyla is a benthopelagic freshwater cyprinid fish native to Asia, valued for both food and ornamental purposes; nevertheless, its parasitic diseases are poorly understood. The present study investigated the presence and ecological indices (prevalence and intensity) of monogenean parasites infecting G. gotyla in Mizoram, northeast India. Additionally, the study aimed to assess the phylogenetic relationships among three closely related dactylogyrid genera: Dactylogyrus, Dogielius, and Dactylogyroides. Monogeneans were initially identified based on the comparative morphology of their sclerotised haptoral and reproductive structures, followed by BLASTn comparisons of their partial 28S rRNA gene sequences. Two dactylogyrid species, Dactylogyrus labro sp. n. and Dogielius salpinx sp. n., were recovered and are described herein as new to science. Dactylogyrus labro was found to infect all examined fish, whereas D. salpinx had a slightly lower prevalence, ranging from 76.5% to 83.3% across different sampling sites. The phylogenetic insights from these species presented in this study highlight the complex evolutionary relationships within these three genera. Further, this study provides the first confirmed molecular data for a Dogielius species, allowing for much-needed phylogenetic studies on the genus and filling a gap in sequencing data for Indian monogeneans. Since all monogeneans are potentially hazardous parasites, more studies are needed to map their diversity and effects on host fishes in this region.
This review article discusses five volumes that provide the final report on the excavations in Insula ix at Silchester (the ‘Town Life Project’), which began in 1997 and were completed in 2014:
M Fulford, A Clarke and H Eckardt 2006. Life and Labour in Late Roman Silchester: excavations in Insula ix since 1997 (Britannia Monogr no. 22), Society for the Promotion of Roman Studies, London [henceforth Vol 1]
M Fulford and A Clarke 2011. Silchester: city in transition. The mid-Roman occupation of Insula ix c AD 125–250/300. A report on excavations undertaken since 1997 (Britannia Monogr no. 25), Society for the Promotion of Roman Studies, London [henceforth Vol 2]
M Fulford, A Clarke, E Durham and N Pankhurst 2018. Late Iron Age Calleva: the pre-conquest occupation at Silchester Insula ix (Britannia Monogr no. 32), Society for the Promotion of Roman Studies, London [henceforth Vol 3]
M Fulford, A Clarke, E Durham and N Pankhurst 2020. Silchester Insula ix. The Claudio-Neronian occupation of the Iron Age oppidum: the early Roman occupation at Silchester Insula ix (Britannia Monogr no. 33), Society for the Promotion of Roman Studies London [henceforth Vol 4]
M Fulford, A Clarke and N Pankhurst 2024. Silchester Insula ix: oppidum to Roman city c 85–125/150 (Britannia Monogr no. 37), Society for the Promotion of Roman Studies, London [henceforth Vol 5]
Hatching failure represents a significant and growing barrier to reproductive success in threatened birds, but its causes are often hard to identify. Egg abandonment by parents is a commonly observed phenomenon – often believed to be driven by disturbance, partial predation, and/or extreme environmental events – and is assumed to result in the mortality of viable eggs in the clutch. However, in practice it is often unclear whether abandonment is the cause of egg failure, or conversely, if parents abandon their eggs after detecting they are inviable. From a conservation management perspective, approaches to mitigating hatching failure would differ substantially depending on which of these scenarios is true. Here we draw evidence from both a systematic literature search and empirical data from a wild population of threatened birds to show that studies rarely have sufficiently clear definitions or timeframes for determining whether abandonment occurred, or sufficient monitoring effort to distinguish between parental abandonment as the cause or consequence of embryo mortality. By combining evidence from nest records and unhatched egg examinations, we show that parental abandonment rates are likely to be over-estimated, while other drivers of reproductive failure may be underestimated. We provide recommendations for improving the accuracy of egg fate records, which we hope will improve the accuracy of hatching failure data and enhance the specificity of related conservation interventions.
For the first time in well over half a century, a Church of England bishop has been elected archbishop of an Australian metropolitan diocese with the election of Ric Thorpe, the Bishop of Islington in London, as Archbishop of Melbourne. It has come as a considerable surprise, not only for Melbourne but also for the Anglican Church of Australia. This paper will begin by dissecting the May election, contrasting it with previous Melbourne elections, before outlining the progressive character of Melbourne Diocese that exists no more. It will then discuss how the dramatic changes the election has revealed have come about, before turning to the impact on the broader Australian church.
Recent voter turnout data has revealed a consistent and growing turnout gap between Black and White Americans since the 2012 Presidential election. Scholars have attributed this gap to an increase in restrictive voting laws. However, few have considered the decreased effectiveness of long-standing models of political behavior on Black voter turnout as the American political landscape has shifted. This note seeks to uncover patterns in recent Presidential elections that display a lack of effectiveness of prominent voter turnout models for Black Americans due to disparate socializing experiences in a post-Obama context like voter suppression and a global pandemic. It employs models previously used by Leighley and Vedlitz (1999) to evaluate and compare turnout models for Black and White individuals with mini-meta analysis. This paper utilizes the 2016 and 2020 Collaborative Multiracial Post-election Survey (CMPS) and the 2016 and 2020 American National Election Study to establish models and measure their impact on Black and White voter turnout. I find support that prominent turnout models behave differently in a post-Obama context like income, length of residence, group consciousness, and group threat while some models behave differently for Black and white voters like political interest and political efficacy. These findings assert that new turnout models need to be established to better understand the Black electorate in a post-Obama context.
This study proposes an animal selection protocol for adaptability using machine learning models to analyse variables related to genotype–environment interaction in cows raised in the Ñeembucú wetlands of Paraguay. The objective is to optimise selection and improve reproductive efficiency by addressing adaptive traits related to specific environments. Machine learning enabled the identification of key physiological variables associated with environmental adaptability that influence body condition in cows, including phosphatase, cholesterol, phosphorus, hair length, creatinine, haematocrit, creatine phosphokinase, haemoglobin, body temperature and calcium. The gradient boosting machine model was selected for its superior performance based on root mean square error and mean absolute error indicators. Results indicated that low concentrations of phosphatase and creatine phosphokinase, along with shorter hair length, positively affect body condition score. Likewise, body temperature dynamics were reflected in the response variable. Higher levels of haematocrit and haemoglobin showed a positive influence on body condition score. Based on the identified influential variables, a selection protocol for adaptability in breeding cows is proposed.
A flexible power assistive exoskeleton is proposed in this study to overcome limitations in range of motion, assistance, and comfort existing in current exoskeletons. The flexible power assistive exoskeleton is made of three springs that store energy from shoulder movements to provide assistance. It uses biomechanical models to simulate muscle forces. It is highly portable and comfortable, with only 83.29 g weight. A theoretical model was established to address the relationship between body work and output force. An evaluation system is proposed to assess the comfort effect of the assistive exoskeleton. Results show that the assistive exoskeleton can support all ranges of motion for the human upper limbs. It can offer up to 14.2% assistance. It also has a mass-to-assistance value of 120. For a comforting evaluation, its satisfaction rate reaches 93.4%. In summary, we present a highly flexible power-assisted exoskeleton with a large motion range, noticeable assistance effect, and high comfortability. This work contributes to the development of flexible assistive exoskeletons and comforting evaluation strategies for wearable devices.