The beetle fauna of Dominica, Lesser Antilles (Insecta: Coleoptera) : diversity and distribution

The beetle fauna of the island of Dominica is summarized. It is presently known to contain 269 genera, and 361 species (in 42 families), of which 347 are named at a species level. Of these, 62 species are endemic to the island. The other naturally occurring species number 262, and another 23 species are of such wide distribution that they have probably been accidentally introduced and distributed, at least in part, by human activities. Undoubtedly, the actual numbers of species on Dominica are many times higher than now reported. This highlights the poor level of knowledge of the beetles of Dominica and the Lesser Antilles in general. Of the species known to occur elsewhere, the largest numbers are shared with neighboring Guadeloupe (201), and then with South America (126), Puerto Rico (113), Cuba (107), and Mexico-Central America (108). The Antillean island chain probably represents the main avenue of natural overwater dispersal via intermediate stepping-stone islands. The distributional patterns of the species shared with Dominica and elsewhere in the Caribbean suggest stages in a dynamic taxon cycle of species origin, range expansion, distribution contraction, and re-speciation

IV. A short account of Souffriere in the island of St. Lucia. From observations on the diseases which appeared in the army there in December 1778

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Pest categorisation of Sternochetus mangiferae

The European Commission requested EFSA to conduct a pest categorisation of Sternochetus mangiferae (Coleoptera: Curculionidae), a monophagous pest weevil whose larvae exclusively feed on mango seeds, whereas adults feed on mango foliage. S. mangiferae is a species with reliable methods available for identification. It is regulated in the EU by Council Directive 2000/29/EC where it is listed in Annex IIB as a harmful organism whose introduction into EU Protected Zones (PZ) (Alentejo, Algarve and Madeira in Portugal, and Granada and Malaga in Spain) is banned. S. mangiferae is native to South East Asia and has spread to other mango-growing areas in Africa, South America and Oceania, causing significant damage. Larvae of S. mangiferae have been detected several times in mango fruit imported into the EU. In 2013, an outbreak was declared in one PZ in Spain. Official measures taken achieved eradication, which was officially declared in January 2018. The EFSA Plant Health Panel concludes that S. mangiferae could establish again and spread in the mango-growing areas of southern EU. Considering the criteria within the remit of EFSA to assess the status as a potential Union quarantine pest (QP), as a potential protected zone quarantine pest (PZQP) or as a potential regulated non-quarantine pest (RNQP), S. mangiferae meets with no uncertainties the criteria for consideration as a potential Union QP, as it is absent from the EU, potential pathways for entry exist, and its establishment would cause an economic impact. The criterion of the pest being present in the EU, which is a prerequisite for RNQP and PZ QP, is not met

A Taxonomy of Independent Electoral Reapportionment Systems

This paper addresses a means of checking legislative gerrymandering, which I have called the Independent Electoral Reapportionment Commission (IERC). Its purpose is to prevent self-interested politicians from drawing biased constituency lines. While scholars have researched gerrymandering, few scholars have researched commissions designed to limit such gerrymandering, and no comprehensive work details the global means of accomplishing this goal. Thus, the purpose of this paper is not to normatively prescribe the best practices for composing and empowering an IERC, but rather to descriptively show how different countries conduct this process. While Part II makes some determinations about which commissions may conceptually function better than others, these conclusions are theoretical and not based on careful scrutiny of how these systems are actually functioning. This paper dissects how current committees function so that knowledge can be used contextually to aid those trying to design a better commission for their own country

A Taxonomy of Independent Electoral Reapportionment Systems

This paper addresses a means of checking legislative gerrymandering, which I have called the Independent Electoral Reapportionment Commission (IERC). Its purpose is to prevent self-interested politicians from drawing biased constituency lines. While scholars have researched gerrymandering, few scholars have researched commissions designed to limit such gerrymandering, and no comprehensive work details the global means of accomplishing this goal. Thus, the purpose of this paper is not to normatively prescribe the best practices for composing and empowering an IERC, but rather to descriptively show how different countries conduct this process. While Part II makes some determinations about which commissions may conceptually function better than others, these conclusions are theoretical and not based on careful scrutiny of how these systems are actually functioning. This paper dissects how current committees function so that knowledge can be used contextually to aid those trying to design a better commission for their own country

Root traits explain plant species distributions along climatic gradients yet challenge the nature of ecological trade-offs

Ecological theory is built on trade-offs, where trait differences among species evolved as adaptations to different environments. Trade-offs are often assumed to be bidirectional, where opposite ends of a gradient in trait values confer advantages in different environments. However, unidirectional benefits could be widespread if extreme trait values confer advantages at one end of an environmental gradient, whereas a wide range of trait values are equally beneficial at the other end. Here, we show that root traits explain species occurrences along broad gradients of temperature and water availability, but model predictions only resembled trade-offs in two out of 24 models. Forest species with low specific root length and high root tissue density (RTD) were more likely to occur in warm climates but species with high specific root length and low RTD were more likely to occur in cold climates. Unidirectional benefits were more prevalent than trade-offs: for example, species with large-diameter roots and high RTD were more commonly associated with dry climates, but species with the opposite trait values were not associated with wet climates. Directional selection for traits consistently occurred in cold or dry climates, whereas a diversity of root trait values were equally viable in warm or wet climates. Explicit integration of unidirectional benefits into ecological theory is needed to advance our understanding of the consequences of trait variation on species responses to environmental change.</p

Associations among early-season root and shoot traits, nutrient use efficiency and grain yield of spring wheat

Nutrient-efficient and high-yielding spring wheat is needed in high-latitude regions. The aims of this thesis were: (1) to evaluate the effects of soil compaction and differential weather conditions on plant growth and grain yield, (2) to identify critical nutrient elements limiting plant growth and grain yield, and (3) to identify root and shoot traits at an early growth stage (early vigor) influencing nutrient use efficiency and grain yield of spring wheat. This thesis is based on a two-year field trial and a three-week greenhouse experiment. Nine spring wheat genotypes were field-grown on compacted and non-compacted soils during two cropping seasons with contrasting weather conditions. In addition, the same genotypes were greenhousegrown for three weeks in rhizoboxes to further explore the genotype-specific associations between early vigor and nutrient accumulation. Soil compaction increased plant biomass in the drier year but decreased it in the wetter year, compared to the non-compacted treatment. In addition to nitrogen, magnesium-tophosphorus ratio co-limited total plant biomass and grain yield. Depending on the nutrient of interest, different root system traits were identified as relevant for their accumulations. Furthermore, a potential trade-off was found between nitrogen uptake efficiency and grain-specific nitrogen efficiency (i.e., grain yield per nitrogen accumulation), and it might be partly triggered by some trade-offs seen between root system traits already at an early growth stage. I emphasize that weather conditions significantly influence the interactions between compacted soil and plant growth. I suggest that the potential of early vigor to improve nutrient use efficiency and grain yield should be further investigated, together with the spatial and temporal dynamics of soil resources

A National Bilingual Education Policy for the Economic and Academic Empowerment of Youth in St. Lucia, West Indies

This campaign portfolio argues the case for a national bilingual education policy on the island of St. Lucia, where youth speak both St Lucian Creole and St. Lucian standard English. The portfolio consists of a policy paper and brief, an advocacy plan, a communications plan, monitoring and evaluation plan. The Bilingual Education Taskforce (BET), made up of teachers, parents and principals, is an advocacy organization that discovered the need for a bilingual education intervention when they observed, assessed and analyzed the written work of struggling readers at their school, the Anse la Raye Infant School on the west coast of St. Lucia. They also analyzed the issues of youth unemployment, youth drop-out rates and low tertiary education enrollment. A pattern began to emerge that illustrated a struggling reader’s path through the education system. Consistent low academic achievement in the area of English Language Arts (ELA) was found at each academic level, infant, primary, and secondary. Scores on compulsory national ELA exams upon completion of secondary school consistently showed stagnant progress among secondary youth. Youth must score at least a grade of I, II, or III to be considered for tertiary education and since many did not score well, they were not afforded an opportunity to earn a tertiary level education. The problem with low tertiary enrollments is directly linked to employment opportunities and long term economic prosperity for youth. Without at least a tertiary, associate’s education, youth are at a disadvantage, often remaining under- or unemployed. This portfolio policy plan advocates for bilingual education at the primary and secondary level as an intervention for improving learning outcomes of St. Lucian bilingual youth who need early support in language development. Keywords: education policy, bilingualism, bilingual education, Eastern Caribbean, Creole, St. Lucia, linguistics, socio-linguistics, speech, cognition, language acquisitio