A study of the client kings in the early Roman period

When the city-state of Rome began to exert her influence throughout the Mediterranean, the ruling classes developed friendships and alliances with the rulers of the various kingdoms with whom contact was made. During the great military struggles which heralded the end of the republic, it became clear that the general who could count on the clientship of the powerful kingdoms within Rome’s sphere of influence would have a decided advantage over less fortunate rivals. Moreover when Octavian, later Augustus, became the sole ruler of the Roman world after the battle of Actuim, these client kingdoms were an important factor in the defence of the Roman Empire, and Octavian insisted that their kings became personal clients of the emperor. Augustus saw beyond the former uses of these kings, as military supporters in battles fro supremacy, and realized their full potential to a unified empire – some client states he used as buffers against more remote hostile nations, others protected trade routes and others maintained a sense of national identity, whilst introducing the Pax Augusta to their troublesome subjects. At the same time the emperor realized the annexation of some of these kingdoms was necessary and desirable, and so the gradual transformation of kingdoms into provinces began. Augustus' successors found that their predecessor, who had inherited so many small but potentially powerful clients, had set a good example in dealing with them. The Julio-Claudians and Flavians continued the process of romanization and annexation, and new clients were only contemplated when the legions needed support or a respite from warfare; only in Armenia did the clientship pose problems. Trajan, the warrior-emperor, was the first to attempt to annex all his clients and his failure showed the wisdom of Augustus' settlement - a settlement which lasted for several centuries

Evaluation of the “Three Steps in Screening for Dyslexia” Assessment Protocol Designed for New Zealand Teachers

Traditionally, the New Zealand Ministry of Education opposed the recognition of dyslexia. However, since 2007, the Ministry of Education’s position has started to change, evidenced by the development of a working definition. In 2021 the Ministry of Education released Three Steps in Screening for Dyslexia (TSSD), an assessment protocol designed to support teachers to screen for dyslexia. The current research evaluated the TSSD with a sample of 209 children in Years 4 to 6 (8–10 years-of-age) from New Zealand. The research investigated whether children could be accurately classified using tests from the TSSD, whether the three-step protocol described in the TSSD was a valid assessment approach, and what effect operationalising the term average at different cut-off points had on dyslexia screening. Children were classified using two cluster analyses. The first analysis was based on tests from the Woodcock Johnson IV and the second analysis was based on tests from the TSSD. Subsequent analyses investigated specific aspects of the TSSD protocol, including its sequential design and the placement of cut-off points. Results revealed a number of limitations to the TSSD approach. The authors discuss three changes that could be made to improve the validity and reliability of the TSSD, including a broader assessment of the decoding and language comprehension constructs; directing teachers to assess both decoding and language comprehension, irrespective of a child’s language comprehension ability; and placing a greater emphasis on discrepancy bands over cut-off points.Publishe

The identification and classification of struggling readers based on the simple view of reading.

The simple view of reading (SVR) predicts that reading difficulties can result from decoding difficulties, language comprehension difficulties, or a combination of these difficulties. However, classification studies have identified a fourth group of children whose reading difficulties are unexplained by the model. This may be due to the type of classification model used. The current research included 209 children in Grades 3-5 (8-10 years of age) from New Zealand. Children were classified using the traditional approach and a cluster analysis. In contrast to the traditional classification model, the cluster analysis approach eliminated the unexplained reading difficulties group, suggesting that poor readers can be accurately assigned to one of three groups, which are consistent with those predicted by the SVR. The second set of analyses compared the three poor reader groups across 14 measures of reading comprehension, decoding, language comprehension, phonological awareness, and rapid naming. All three groups demonstrated reading comprehension difficulties, but the dyslexia group showed particular weaknesses in word processing and phonological areas, the SCD group showed problems deriving meaning from oral language, and the mixed group showed general deficits in most measures. The findings suggest that the SVR does have the potential to determine reading profiles and differential intervention methods.Publishe

The influence of prey, pastoralism and poaching on the hierarchical use of habitat by an apex predator

As an apex predator, habitat selection by African lions, Panthera leo, is primarily determined by bottom-up processes; however, increasing anthropogenic pressures may alter these relationships. Using camera traps and track surveys in the Limpopo National Park, Mozambique, we collected detection/non-detection data of lions and their prey and combined these with occurrence data on bushmeat poaching activities and spatial data on agro-pastoralist land use and other landscape features. We used hierarchical modelling within an occupancy framework to determine the relative influences of ecological variables on resource use and non-use by lions at two spatial scales. Habitat use by lions was most strongly influenced by the occurrence of their preferred prey across both spatial scales. However, lions were strongly negatively predicted by bushmeat poaching at the finer spatial scale and generally negatively predicted by agro-pastoralist activities at the coarser scale. Restricting our analysis to the home-range scale would have greatly underestimated the impact of bushmeat poaching on the ecology of lions. The results of our study illustrate the trophic dependency of prey resources to lions and the importance of considering scale when investigating species habitat use. Importantly, our study also demonstrates the limiting influence of bushmeat poaching on the use of habitat by an apex predator.K.T.E. and L.A. were supported by the May and Stanley Smith Trust, The Wipplinger KL Bursary Found, Wilderness Wildlife Trust and Canada National Student Grants.http://www.sawma.co.zaam201

Trophic scaling and occupancy analysis reveals a lion population limited by top-down anthropogenic pressure in the Limpopo National Park, Mozambique

The African lion (Panthera Leo) has suffered drastic population and range declines over the last few decades and is listed by the IUCN as vulnerable to extinction. Conservation management requires reliable population estimates, however these data are lacking for many of the continent’s remaining populations. It is possible to estimate lion abundance using a trophic scaling approach. However, such inferences assume that a predator population is subject only to bottom-up regulation, and are thus likely to produce biased estimates in systems experiencing top-down anthropogenic pressures. Here we provide baseline data on the status of lions in a developing National Park in Mozambique that is impacted by humans and livestock. We compare a direct density estimate with an estimate derived from trophic scaling. We then use replicated detection/nondetection surveys to estimate the proportion of area occupied by lions, and hierarchical ranking of covariates to provide inferences on the relative contribution of prey resources and anthropogenic factors influencing lion occurrence. The direct density estimate was less than 1/3 of the estimate derived from prey resources (0.99 lions/100 km2 vs. 3.05 lions/100 km2). The proportion of area occupied by lions was Y= 0.439 (SE = 0.121), or approximately 44% of a 2 400 km2 sample of potential habitat. Although lions were strongly predicted by a greater probability of encountering prey resources, the greatest contributing factor to lion occurrence was a strong negative association with settlements. Finally, our empirical abundance estimate is approximately 1/3 of a published abundance estimate derived from opinion surveys. Altogether, our results describe a lion population held below resource-based carrying capacity by anthropogenic factors and highlight the limitations of trophic scaling and opinion surveys for estimating predator populations exposed to anthropogenic pressures. Our study provides the first empirical quantification of a population that future change can be measured against.KTE and LA were supported by the May and Stanley Smith Trust, The Wipplinger KL Bursary Found, Wilderness Wildlife Trust and Canada National Student Grants.http://www.plosone.orgam201

Use of site occupancy models for targeted monitoring of the cheetah

The cheetah Acinonyx jubatus has suffered dramatic range contractions and population declines as a result of habitat degradation, prey depletion and conflict with humans. Of further concern is that many of Africa’s remaining cheetah populations persist in human-dominated and highly fragmented landscapes, where their ecology is poorly understood and population data are lacking. Presence–absence surveys may be a practical means to collect these data; however, failing to account for detection error can lead to biased estimates and misleading inferences; potentially having deleterious consequences for species conservation. The goal of this study was to identify how an occupancy modelling technique that explicitly accounts for detectability could be used for quantifying cheetah status in humanimpacted landscapes. Replicated camera-trap and track surveys of 100-km2 sample units were used to estimate the proportion of area occupied by cheetahs and to determine the survey effort required to inform conservation planning. Based on our results, 16 km [±standard error (SE) = 12–22] of walking or 193 camera-trap nights (±SE = 141–292) are required to confirm cheetah absence at a given 100-km2 grid cell (with 95% certainty). Accounting for detection resulted in an overall cheetah occurrence estimate of 0.40 (SE = 0.13), which is 16% higher than the traditional presence–absence estimate that ignores detection error. We test a priori hypotheses to investigate factors limiting cheetahs using an occurrence probability model of their preferred prey. The results show that both cheetahs and their prey were strongly negatively influenced by human settlements. Our study provides an unbiased estimate of occurrence that can be used to compare status across different sites and as a basis for long-term monitoring. Based on our results, we suggest that track and/or camera-trap surveys coupled with site occupancy models may be useful for targeted monitoring of cheetahs across their distribution.http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1469-7998hb201

Evidence for a resident population of cheetah in the Parque Nacional do Limpopo, Mozambique

Transboundary protected areas may be important for the conservation of large African carnivores because these species require large tracts of habitat to maintain viable population numbers and gene flow. Cheetah (Acinonyx jubatus Schreber, 1775), is a species that may benefit from transboundary conservation agreements. It occurs at naturally low population densities, makes use of large home ranges, and disperses over long distances, thus requiring large tracts of suitable habitat to maintain viable population numbers. Here we present the first scientific evidence of a breeding population of cheetah in Parque Nacional do Limpopo (PNL), Mozambique. We obtained data from camera-traps deployed during occupancy surveys conducted from 9 September 2011 to 31 August 2012 over a 3400 km2 study area located within the central third of PNL. These results highlight the importance of the Greater Limpopo Transfrontier Park (GLTFP) to the overall conservation of cheetah in Africa, and the potential value of transboundary protected areas for the conservation of wide-roaming terrestrial mammals.University of Pretoria, the Wilderness Trust and CIB

Evidence for a resident population of cheetah in the Parque Nacional do Limpopo, Mozambique

Transboundary protected areas may be important for the conservation of large African carnivores because these species require large tracts of habitat to maintain viable population numbers and gene flow. Cheetah (Acinonyx jubatus Schreber, 1775), is a species that may benefit from transboundary conservation agreements. It occurs at naturally low population densities,makes use of largehomeranges, and disperses over long distances, thus requiring large tracts of suitable habitat to maintain viable population numbers. Here we present the first scientific evidence of a breeding population of cheetah in Parque Nacional do Limpopo (PNL), Mozambique. We obtained data from camera-traps deployed during occupancy surveys conducted from 9 September 2011 to 31 August 2012 over a 3400 km2 study area located within the central third of PNL. These results highlight the importance of the Greater Limpopo Transfrontier Park (GLTFP) to the overall conservation of cheetah in Africa, and the potential value of transboundary protected areas for the conservation of wide-roaming terrestrial mammals.The University of Pretoria and the Wilderness Trusthttp://www.sawma.co.za/am201

Rhino poaching may cause atypical trophic cascades

Current anthropogenic pressures drive the widespread loss of apex consumers where the effects of their removal from a system may cascade through lower trophic levels, with unanticipated impacts (Estes et al. 2011; Ripple et al. 2014). Similarly, the observed global decline in large herbivores has complex outcomes for ecosystem functioning (Ripple et al. 2015). Key to predicting and understanding the consequences of declines in both these guilds has been the concept of ecological cascades. Thus, hypothesizing ecological pathways and species’ interactions is an important first step in forecasting ecological responses to changes in the abundance and distribution of both apex predators and large herbivores. We raise the question of whether the recent surge in poaching of white rhinoceros (Ceratotherium simum) and, to a lesser extent, the less abundant black rhinoceros (Diceros bicornis) in the Kruger National Park, South Africa, is providing the ingredients for an atypical cascade – one in which the mechanisms include an artificial enhancement rather than reduction of apex predators. We further hypothesize that this atypical trophic cascade could act synergistically with another anthropogenic pressure, the related poaching of lions (Panthera leo) for body parts coveted by rhino poachers, and subsistence poaching of wild meat in the adjoining Limpopo National Park, Mozambique, leading to the creation of an “ecological trap” (where species mistakenly respond to environmental cues that no longer match habitat quality) for an endangered species.This is the publisher’s final pdf. The article is copyrighted by the Ecological Society of America and published by John Wiley & Sons, Inc. It can be found at: http://esajournals.onlinelibrary.wiley.com/hub/journal/10.1002/%28ISSN%291540-9309