1,489 research outputs found

    Europe’s Backlash against Multiculturalism

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    State of Utah v. John B. Tenney : Brief of Appellee

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    DEFENDANT\u27S APPEAL OF CONVICTIONS FOR SELLING UNREGISTERED SECURITIES (12 COUNTS), AN UNCLASSIFIED FELONY UNDER UTAH CODE ANN § 61-1-7 (1986); SECURITIES FRAUD (12 COUNTS), AN UNCLASSIFIED FELONY UNDER UNDER UTAH CODE ANN. § 61-1-1 (1986); UNREGISTERED SECURITIES BROKER (ONE COUNT), AN UNCLASSIFIED FELONY UNDER UTAH CODE ANN. § 61-1-3 (1986); EMPLOYING UNREGISTERED AGENTS, AN UNCLASSIFIED FELONY UNDER UTAH CODE ANN. § 61-1-3(2) (1986), ENTERED UPON JURY VERDICTS IN THE THIRD JUDICIAL DISTRICT COURT, IN AND FOR SALT LAKE COUNTY, UTAH, THE HONORABLE TYRONE E. MEDLEY, PRESIDING

    Immigrant candidates in the Netherlands 

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    Since the Second World War many people have migrated to the Netherlands, in particular from Indonesia, from Surinam, from the Netherlands Antilles, and from countries in the Mediterranean area. It has become clear by now that the vast majority of them have settled permanently. They have become immigrants, a fact has been admitted by the Dutch government. They pass under the name of “ ethnic minorities ”, and the policy elaborated for them bears this name as well. In the “ Draft Minorities Report ” (1981) and later in the “ Minorities Report ” (1983) too, the government expresses its wish to elaborate the minorities policy with the participation of the immigrants involved. It proposes explicitly to strengthen the general political influence of ethnic groups. The most far-reaching measure on that head is the enfranchisement of non-Netherlands immigrants

    Immigrant candidates in the Netherlands 

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    Since the Second World War many people have migrated to the Netherlands, in particular from Indonesia, from Surinam, from the Netherlands Antilles, and from countries in the Mediterranean area. It has become clear by now that the vast majority of them have settled permanently. They have become immigrants, a fact has been admitted by the Dutch government. They pass under the name of “ ethnic minorities ”, and the policy elaborated for them bears this name as well. In the “ Draft Minorities Report ” (1981) and later in the “ Minorities Report ” (1983) too, the government expresses its wish to elaborate the minorities policy with the participation of the immigrants involved. It proposes explicitly to strengthen the general political influence of ethnic groups. The most far-reaching measure on that head is the enfranchisement of non-Netherlands immigrants

    Long distance (>20 km) downstream detection of endangered stream frogs suggests an important role for eDNA in surveying for remnant amphibian populations

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    Background Globally, amphibian species have suffered drastic population declines over the past 40 years. Hundreds of species are now listed as Critically Endangered, with many of these considered “possibly extinct”. Most of these species are stream-dwelling frogs inhabiting remote, montane areas, where remnant populations are hard to find using traditional surveys. Environmental DNA (eDNA) could revolutionize surveys for ‘missing’ and endangered amphibian populations by screening water samples from downstream sections to assess presence in the upstream catchments. However, the utility of this survey technique is dependent on quantifying downstream detection probability and distances. Methods Here we tested downstream detection distances in two endangered stream frogs (Litoria lorica and L. nannotis) that co-occur in a remote stream catchment in north-east Australia, and for which we know precise downstream distributional limits from traditional surveys. Importantly, the two last populations of L. lorica persist in this catchment: one small (~1,000 frogs) and one very small (~100 frogs). We conducted eDNA screening at a series of sites kilometers downstream from the populations using precipitation from two fixed water volumes (15 and 100 mL) and via water filtering (mean 1,480 L). Results We detected L. nannotis and the small L. lorica population (~1,000 frogs) at most sampling sites, including 22.8 km downstream. The filtration method was highly effective for far-downstream detection, as was precipitation from 100 mL water samples, which also resulted in consistent detections at the far-downstream sites (including to 22.8 km). In contrast, we had limited downstream detection success for the very small L. lorica population (~100 frogs). Discussion The ecological aspects of our study system, coupled with thorough traditional surveys, enabled us to measure downstream eDNA detection distances with accuracy. We demonstrate that eDNA from a small population of approximately 1,000 frogs can be detected as far as 22.8 km downstream from the population. Water filtration is considered best for eDNA detection of rare aquatic species—indeed it was effective in this study—but we also achieved far-downstream detections when precipitating eDNA from 100 mL water samples. Collecting small water volumes for subsequent precipitation in the lab is more practical than filtration when surveying remote areas. Our downstream detection distances (>20 km) suggest eDNA is a valuable tool for detecting rare stream amphibians. We provide recommendations on optimal survey methods

    UvA-DARE (Digital Academic Repository)

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    Abstract In this paper we advocate the study of local street markets to explore fundamental issues about the relationship between economy and society. This relationship evolves over time and we believe that it has been recast in an age of increasing cultural diversity and neoliberal state regulatory structures. In street markets we can see how diversity and the nature of economic transactions become mutually constitutive. We argue that cultural diversity propels local markets, while everyday interactions in markets influence intercultural relationships. These complex processes are affected by the spatiality of markets and the regulatory environments within which they operate. We conclude by framing a research program on street markets and discuss a number of methodological complications that would need to be addressed in this endeavour

    Can environmental DNA be used to detect first arrivals of the cane toad, Rhinella marina, into novel locations?

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    Eradicating invasive species is difficult, but success is more likely when populations are small after arrival. The cane toad, Rhinella marina, is an invasive pest species that threatens native fauna worldwide. Increasingly, environmental DNA (eDNA) is used as a technique to monitor the presence of invasive species given its power to detect low numbers of individuals. We aimed to investigate eDNA persistence in freshwater at three different temperatures (25, 30 and 35°C) and eDNA detection thresholds for R. marina using controlled experiments in aquaria. For the latter, two water volumes and two cane toad exposure times were used (800 or 200 L volume with 5 or 30 min exposure). A 15‐ml water sample was collected from each replicated aquaria and preserved with 5 ml Longmire's buffer. Environmental DNA was extracted and four technical quantitative PCR replicates were analyzed targeting the cane toad 16S rDNA mitochondrial gene. Environmental DNA decayed rapidly in water and was reliably detected for up to 3 days after cane toad removal, regardless of the temperature treatment. Also, cane toad eDNA was detected in the water after a 5‐min initial exposure of a single individual in 800 L of water. Under the physical parameters tested here, a positive detection means that a cane toad has been in contact with the water body between 1 and 3 days prior to the sampling event. The results of the present study show the importance of eDNA for determining the presence of a species that occurs at low abundance in a small water body, such as at the onset of a cane toad invasion

    Temporal genetic patterns of diversity and structure evidence chaotic genetic patchiness in a spiny lobster

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    Population structure of many marine organisms is spatially patchy and varies within and between years, a phenomenon defined as chaotic genetic patchiness. This results from the combination of planktonic larval dispersal and environmental stochasticity. Additionally, in species with bi-partite life, postsettlement selection can magnify these genetic differences. The high fecundity (up to 500,000 eggs annually) and protracted larval duration (12–24 months) and dispersal of the southern rock lobster, Jasus edwardsii, make it a good test species for chaotic genetic patchiness and selection during early benthic life. Here, we used double digest restriction site-associated DNA sequencing (ddRADseq) to investigate chaotic genetic patchiness and postsettlement selection in this species. We assessed differences in genetic structure and diversity of recently settled pueruli across four settlement years and between two sites in southeast Australia separated by approximately 1,000 km. Postsettlement selection was investigated by identifying loci under putative positive selection between recently settled pueruli and postpueruli and quantifying differences in the magnitude and strength of the selection at each year and site. Genetic differences within and among sites through time in neutral SNP markers indicated chaotic genetic patchiness. Recently settled puerulus at the southernmost site exhibited lower genetic diversity during years of low puerulus catches, further supporting this hypothesis. Finally, analyses of outlier SNPs detected fluctuations in the magnitude and strength of the markers putatively under positive selection over space and time. One locus under putative positive selection was consistent at both locations during the same years, suggesting the existence of weak postsettlement selection

    Advancing our understanding of the connectivity, evolution and management of marine lobsters through genetics

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    The genomic revolution has provided powerful insights into the biology and ecology of many non-model organisms. Genetic tools have been increasingly applied to marine lobster research in recent years and have improved our understanding of species delimitation and population connectivity. High resolution genomic markers are just beginning to be applied to lobsters and are now starting to revolutionise our understanding of fine spatial and temporal scales of population connectivity and adaptation to environmental conditions. Lobsters play an important role in the ecosystem and many species are commercially exploited but many aspects of their biology is still largely unknown. Genetics is a powerful tool that can further contribute to our understanding of their ecology and evolution and assist management. Here we illustrate how recent genetic advancements are (1) leading to a step change in our understanding of evolution and adaptation, (2) elucidating factors driving connectivity and recruitment, (3) revealing insights into ecological processes and can (4) potentially revolutionise management of this commercially important group. We discuss how improvements in sequencing technologies and statistical methods for genetic data analyses combined with increased sampling efforts and careful sampling design have transformed our understanding of lobsters biology in recent years. We also highlight possible future directions in the application of genomic tools to lobster research that can aid management, in particular, the close-kin-mark-recapture method. Finally, we identify gaps and challenges in lobster research, such as the lack of any reference genomes and predictions on how lobsters will respond to future environmental conditions
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