scholarly journals Successful population establishment from small introductions appears to be less common than believed

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e2440 ◽  
Author(s):  
Alyssa Corbett King ◽  
J. Michael Reed
Keyword(s):  
High Risk ◽  
Scientific Literature ◽  
Propagule Pressure ◽  
Small Populations ◽  
Population Theory ◽  
Risk Of Extinction ◽  
Successful Establishment ◽  
Population Establishment ◽  
The Relationship

Although small populations are at high risk of extinction, there are regular reports in the scientific literature of purported small, isolated, persistent populations. One source of evidence of the viability of small populations comes from the alleged successful introduction of species to areas outside their original range from introductions of few individuals. We reviewed the examples from introduction compendia on deliberate translocations of birds, and the original sources, to identify and evaluate purported examples of successful establishments from small introductions. We found 23 purportedly successful introductions from few (<30) individuals. After assessing original sources, we found that two of the claims were substantiated; the rest were ambiguous or could be rejected as examples, primarily due to a lack of evidence in original sources of the number of birds released and because of supplemental individuals from other releases, releases in nearby regions, and the possibility of natural invasion. Our results suggest that reports of successful establishment of birds from introductions of few individuals have been overstated. These results strengthen the relationship previously reported between propagule pressure and likelihood of establishment, and support the lack of viability of small populations presumed by population theory. We suggest that analyses of introduction failure and success would benefit from excluding studies where introduction effort is unknown or unreliably documented.

scholarly journals Relationship between propagule pressure and colonization pressure in invasion ecology: a test with ships' ballast

2012 ◽  
Vol 279 (1740) ◽  
pp. 2990-2997 ◽  
Author(s):  
Elizabeta Briski ◽  
Sarah A. Bailey ◽  
Oscar Casas-Monroy ◽  
Claudio DiBacco ◽  
Irena Kaczmarska ◽  
...  
Keyword(s):  
Scientific Literature ◽  
Propagule Pressure ◽  
Strong Relationship ◽  
Colonization Pressure ◽  
Selective Pressures ◽  
Number Of Species ◽  
Water And Sediment ◽  
Taxonomic Groups ◽  
The Relationship ◽  
New Habitats

Increasing empirical evidence indicates the number of released individuals (i.e. propagule pressure) and number of released species (i.e. colonization pressure) are key determinants of the number of species that successfully invade new habitats. In view of these relationships, and the possibility that ships transport whole communities of organisms, we collected 333 ballast water and sediment samples to investigate the relationship between propagule and colonization pressure for a variety of diverse taxonomic groups (diatoms, dinoflagellates and invertebrates). We also reviewed the scientific literature to compare the number of species transported by ships to those reported in nature. Here, we show that even though ships transport nearly entire local communities, a strong relationship between propagule and colonization pressure exists only for dinoflagellates. Our study provides evidence that colonization pressure of invertebrates and diatoms may fluctuate widely irrespective of propagule pressure. We suggest that the lack of correspondence is explained by reduced uptake of invertebrates into the transport vector and the sensitivity of invertebrates and diatoms to selective pressures during transportation. Selection during transportation is initially evident through decreases in propagule pressure, followed by decreased colonization pressure in the most sensitive taxa.

Usia Resiko Tinggi dan Perdarahan Post Partum

2018 ◽  
Vol 3 (2) ◽  
pp. 91
Author(s):  
Ani Media Harumi ◽  
Kasiati Kasiati
Keyword(s):  
High Risk ◽  
Post Partum ◽  
Chi Square ◽  
Sample Number ◽  
Chi Square Test ◽  
Study Population ◽  
Relationship Of ◽  
The Relationship

Abstract: The purpose of this study is to analyze the relationship of age high risk with the incidence ofbleeding post partum in dr. M. Soewandhie Surabaya hospital. This research is analytic with an approachof a sectional cross. The study population was all post partum mothers in the Dr. M. Soewandhie Surabayahospital in January 2016 to March 2017, which amounts to an average of 1840respondents while theresearch sample number 182. Measuring collection sheet data obtained by systematic random sampling.The Study was conducted Chi-Square test obtained mean count X2 (0,00) is less than á (0.05) thenH0 is rejected and H1 accepted it means that there is a relationship between the age of high risk withbleeding post partum. Conclusion, there is a relationship between the age of high risk with the incidenceof bleeding post partum in the Spaceof the Maternity room Dr. Moch. Soewandhie Surabayahospital.

ISLAM DAN PANCASILA DALAM PEMIKIRAN MOHAMMAD NATSIR

2019 ◽  
Vol 3 (1) ◽  
pp. 82
Author(s):  
Mhd Alfahjri Sukri
Keyword(s):  
Political Parties ◽  
Qualitative Method ◽  
Political Socialization ◽  
Scientific Literature ◽  
Research Data ◽  
The Political ◽  
Direct Influence ◽  
Childhood Environment ◽  
Political Conditions ◽  
The Relationship

This research was conducted to see how Mohammad Natsir thought about the relationship between Islam and Pancasila. This study also explains the causes of Natsir's change of mind which initially supported Pancasila as part of Islam and later turned into an opponent of Pancasila in Konstituante on 11 November to 6 December 1957. The methodology used was a qualitative method by describing the results of the analysis carried out. The research data is obtained through a review of documents and scientific literature. The results of the study show that Mohammad Natsir's change of mind regarding the relationship between Islam and Pancasila was influenced by Mohammad Natsir's political socialization which began from Natsir's view of Islam influenced by the childhood environment (conditional and socio-cultural) in Minangkabau; direct influence from national figures such as Ahmad Hassan, H. Agus Salim, Sheikh Ahmad Syurkati and H. O Tjokroaminoto; the indirect influence of international figures throughout reading book such as Hassan Al-Banna, Amir Syakib Arselan, Rashid Ridha and Muhammad Abduh; the influence of Natsir's organization and political parties, namely Jong Islamieten Bond (JIB), Islamic Unity (Persis), and Masyumi political parties; and the influence of the political conditions at that time which made Natsir's views change, which initially accepted Pancasila and then became an opponent of the Pancasila. This research shown there are two patterns of Natsir's relationship with Pancasila, namely (1) Natsir accepted Pancasila and, (2) Natsir opposed Pancasila.

О НЕКОТОРЫХ ИСТОРИЧЕСКИХ АСПЕКТАХ СТАНОВЛЕНИЯ ВОСПИТАТЕЛЬНОЙ РАБОТЫ С ОСУЖДЕННЫМИ В МЕСТАХ ЛИШЕНИЯ СВОБОДЫ

2020 ◽  
Author(s):  
Vasiliy Dvortsov ◽  
Alexander Efimenko
Keyword(s):  
General Education ◽  
Scientific Literature ◽  
Criminal Code ◽  
The Self ◽  
Self Assessment ◽  
Educational Work ◽  
Legal Norms ◽  
Education Profession ◽  
Comprehensive Programs ◽  
The Relationship

В статье предпринята попытка теоретического анализа и изучения научной литературы по организации и становлению воспитательной работы с осужденными в местах лишения свободы, продемонстрирована взаимосвязь между политико-воспитательной работой, ресоциализацией и исправлением осужденных в пенитенциарных учреждениях. Проведенное исследование позволяет предполагать, что воспитательная работа является основополагающим средством исправления различных категорий осужденных (регламентировано ст. 9 УИК РФ). На этой основе критерием исправления будет становиться устойчивое правопослушное поведение человека. В связи с этим возникает необходимость использования психолого-педагогической программы по перестройке и самооценке осужденных, позволяющей формировать их готовность к самореализации, когда осознание совершенных преступлений становится внутренне неприемлемым. Авторами отмечается, что, самоисправление человека зависит от ряда направлений воспитательной работы: нравственного, правового, физического воспитания, получения основного общего образования, получения профессии. Очевидно, что для закрепления положительного результата процесс ресоциализации в пенитенциарных учреждениях должен проводиться сотрудниками всех отделов и служб на основе комплексных программ, разработанных с учетом специфики и возраста осужденных.The article attempts a theoretical analysis and study of scientific literature on the organization and formation of educational work with convicts in prisons, demonstrates the relationship between «political and educational work», re-socialization and correction of convicts in prisons. The study suggests that educational work is a fundamental means of correcting various categories of convicts (regulated by article 9 of the criminal code). Based on this criterion fixes will become sustainable human behavior, demonstrating a conscious rejection of the violation of legal norms with the aim of securing sustainable patterns of law-abiding behavior. There is a need to use the psychological and pedagogical Program for restructuring and self-assessment of convicts, which allows to form on this basis their readiness for self-realization, when the awareness of the crimes committed becomes internally unacceptable. In this regard, the self-correction of a person depends on a number of areas, namely, moral, legal, physical education, basic General education, profession, forming the basis of educational work. It is obvious that in order to consolidate a positive result in penitentiary institutions, the activities of all departments and services should be carried out a process of re-socialization on the basis of comprehensive Programs developed taking into account the specifics and different ages of convicts.

Inbreeding reduces reproductive fitness

2017 ◽  
Author(s):  
Richard Frankham ◽  
Jonathan D. Ballou ◽  
Katherine Ralls ◽  
Mark D. B. Eldridge ◽  
Michele R. Dudash ◽  
...  
Keyword(s):  
Natural Selection ◽  
Inbreeding Depression ◽  
Reproductive Fitness ◽  
Heterozygote Advantage ◽  
Small Populations ◽  
Population Bottlenecks ◽  
Risk Of Extinction ◽  
Survival And Reproduction

The harmful impacts of inbreeding are generally greater in species that naturally outbreed compared to those in inbreeding species, greater in stressful than benign environments, greater for fitness than peripheral traits, and greater for total fitness compared to its individual components. Inbreeding reduces survival and reproduction (i.e., it causes inbreeding depression), and thereby increases the risk of extinction. Inbreeding depression is due to increased homozygosity for harmful alleles and at loci exhibiting heterozygote advantage. Natural selection may remove (purge) the alleles that cause inbreeding depression, especially following inbreeding or population bottlenecks, but it has limited effects in small populations and usually does not completely eliminate inbreeding depression. Inbreeding depression is nearly universal in sexually reproducing organisms that are diploid or have higher ploidies.

scholarly journals Self-Rated Health Status as a Predictor of Executive Function in Older Latinos

2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 331-332
Author(s):  
Jacqueline Guzman ◽  
Yuliana Soto ◽  
David Marquez ◽  
Susan Aguinaga
Keyword(s):  
Executive Function ◽  
High Risk ◽  
Cognitive Decline ◽  
Behavioral Interventions ◽  
Controlled Trial ◽  
Self Rated Health ◽  
Excellent Health ◽  
Trail Making ◽  
Fair Poor ◽  
The Relationship

Abstract Latinos have high risk of Alzheimer’s disease and related dementias (ADRD). Self-rated health (SRH) has been used to predict cognitive decline. Early detection of executive function changes may help identify those at higher risk of cognitive decline. The purpose of this study was to examine the relationship between SRH and executive function in Latinos. Latinos (N=333, 84.4% female, Mage= 64.9 ± 7.08) from the BAILA randomized controlled trial self-rated their health as 1) poor/fair, 2) good, and 3) very good/excellent. Executive function was assessed by the Trail-making B, Verbal Fluency, Stroop C & CW, and the Digit Modality tests and stratified by SRH. One-way analysis of variance showed that the effect of SRH was significant for Trails B, F(2,298)=4.01, p=.019 and Stroop CW, F(2,298)=3.07, p=.048. Tukey’s test indicated that participants who rated their health as fair/poor took longer to complete Trails B (M=196.78±83.0 seconds) compared to those who rated their health as good (M=185.25 ± 85.1 seconds) and very good/excellent (M=149.25±95.3 seconds). Stroop CW results demonstrated that those in the fair/poor health category scored lower (M=17.22±6.6) than those in good (M=19.70±8.5 words/minutes) and very good/excellent health categories (M=18.73±8.2 words/minute). In sum, the results suggest SRH is related to executive function such that lower categories of SRH are indicative of poorer executive function. SRH might be used as a proxy for executive function and as a tool that community leaders can use to identify individuals at high risk of ADRD in need of behavioral interventions.

scholarly journals Post-transplant absolute lymphocyte count predicts early cytomegalovirus infection after heart transplantation

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Minjae Yoon ◽  
Jaewon Oh ◽  
Kyeong-Hyeon Chun ◽  
Chan Joo Lee ◽  
Seok-Min Kang
Keyword(s):  
High Risk ◽  
Heart Transplantation ◽  
Immunosuppressive Therapy ◽  
Lymphocyte Count ◽  
Cytomegalovirus Infection ◽  
Absolute Lymphocyte Count ◽  
Cmv Infection ◽  
Igg Antibody ◽  
Post Transplant ◽  
The Relationship

AbstractImmunosuppressive therapy can decrease rejection episodes and increase the risk of severe and fatal infections in heart transplantation (HT) recipients. Immunosuppressive therapy can also decrease the absolute lymphocyte count (ALC), but the relationship between early post-transplant ALC and early cytomegalovirus (CMV) infection is largely unknown, especially in HT. We retrospectively analyzed 58 HT recipients who tested positive for CMV IgG antibody and received basiliximab induction therapy. We collected preoperative and 2-month postoperative data on ALC and CMV load. The CMV load > 1200 IU/mL was used as the cutoff value to define early CMV infection. Post-transplant lymphopenia was defined as an ALC of < 500 cells/μL at postoperative day (POD) #7. On POD #7, 29 (50.0%) patients had post-transplant lymphopenia and 29 (50.0%) patients did not. The incidence of CMV infection within 1 or 2 months of HT was higher in the post-transplant lymphopenia group than in the non-lymphopenia group (82.8% vs. 48.3%, P = 0.013; 89.7% vs. 65.5%, P = 0.028, respectively). ALC < 500 cells/μL on POD #7 was an independent risk factor for early CMV infection within 1 month of HT (odds ratio, 4.14; 95% confidence interval, 1.16–14.77; P = 0.029). A low ALC after HT was associated with a high risk of early CMV infection. Post-transplant ALC monitoring is simple and inexpensive and can help identify patients at high risk of early CMV infection.

scholarly journals The Relationship Between Self-Compassion, Childhood Maltreatment and Attachment Orientation In High-Risk Adolescents

2021 ◽  
pp. 0044118X2110028
Author(s):  
Heather Mary Quinlan ◽  
Kellie Lynn Hadden ◽  
David Paul Storey
Keyword(s):  
Psychological Distress ◽  
High Risk ◽  
Childhood Maltreatment ◽  
Newfoundland And Labrador ◽  
Attachment Anxiety ◽  
Non Profit ◽  
Self Compassion ◽  
Attachment Orientation ◽  
The Relationship ◽  
Street Environment

The purpose of the current study was to explore whether selfcompassion predicted psychological distress over and above childhood maltreatment and attachment orientation in high-risk youths. Fifty-one youths (31 males, 20 females) aged 17 to 24, recruited from a community non-profit organization in St. John’s, Newfoundland and Labrador, Canada, were administered validated measures of childhood maltreatment, attachment orientation, self-compassion, and psychological distress. Results indicated that self-compassion was inversely associated with childhood maltreatment, attachment anxiety, attachment avoidance, and psychological distress. However, results did not support the hypothesis that self-compassion was a significant predictor of psychological distress over and above attachment anxiety and childhood maltreatment in high-risk youths. Our results indicated that self-compassion is not well developed in street-involved youths and may be a vital intervention target to heal negative internalized views of the self, while maintaining vigilance to threats inherent in the street environment.

scholarly journals Implications of Autonomous Vehicles for Accessibility and Transport Equity: A Framework Based on Literature

2021 ◽  
Vol 13 (8) ◽  
pp. 4448
Author(s):  
Alberto Dianin ◽  
Elisa Ravazzoli ◽  
Georg Hauger
Keyword(s):  
Conceptual Model ◽  
Transport System ◽  
Urban Areas ◽  
Autonomous Vehicles ◽  
Scientific Literature ◽  
Social Groups ◽  
Future Studies ◽  
Social Accessibility ◽  
The Relationship

Increasing accessibility and balancing its distribution across space and social groups are two fundamental goals to make transport more sustainable and equitable. In the next decades, autonomous vehicles (AVs) could significantly transform the transport system, influencing accessibility and transport equity. In particular, depending on the assumed features of AVs (e.g., private or collective) and the considered spatial, social, and regulative context (e.g., rural or urban areas), impacts may be very different. Nevertheless, research in this field is still limited, and the relationship between AV assumptions and accessibility impacts is still partially unclear. This paper aims to provide a framework of the key and emerging aspects related to the implications of AVs for accessibility and transport equity. To set this framework, we perform an analysis of the scientific literature based on a conceptual model describing the implications of AVs for the distribution of accessibility across space and social groups. We recognize four main expected impacts of AVs on accessibility: (1) accessibility polarization, (2) accessibility sprawl, (3) exacerbation of social accessibility inequities, and (4) alleviation of social accessibility inequities. These impacts are described and analyzed in relation to the main AV assumptions expected to trigger them through different mechanisms. Based on the results, some recommendations for future studies intending to focus on the relation between AVs, accessibility, and transport equity are provided.

scholarly journals Interactions between hippocampal activity and striatal dopamine in people at clinical high risk for psychosis: relationship to adverse outcomes

2021 ◽  
Author(s):  
Gemma Modinos ◽  
Anja Richter ◽  
Alice Egerton ◽  
Ilaria Bonoldi ◽  
Matilda Azis ◽  
...  
Keyword(s):  
High Risk ◽  
Functional Outcomes ◽  
Mental States ◽  
Adverse Outcomes ◽  
Striatal Dopamine ◽  
Psychotic Symptoms ◽  
Dopamine Synthesis ◽  
Clinical High Risk ◽  
Hippocampal Activity ◽  
The Relationship

AbstractPreclinical models propose that increased hippocampal activity drives subcortical dopaminergic dysfunction and leads to psychosis-like symptoms and behaviors. Here, we used multimodal neuroimaging to examine the relationship between hippocampal regional cerebral blood flow (rCBF) and striatal dopamine synthesis capacity in people at clinical high risk (CHR) for psychosis and investigated its association with subsequent clinical and functional outcomes. Ninety-five participants (67 CHR and 28 healthy controls) underwent arterial spin labeling MRI and 18F-DOPA PET imaging at baseline. CHR participants were followed up for a median of 15 months to determine functional outcomes with the global assessment of function (GAF) scale and clinical outcomes using the comprehensive assessment of at-risk mental states (CAARMS). CHR participants with poor functional outcomes (follow-up GAF < 65, n = 25) showed higher rCBF in the right hippocampus compared to CHRs with good functional outcomes (GAF ≥ 65, n = 25) (pfwe = 0.026). The relationship between rCBF in this right hippocampal region and striatal dopamine synthesis capacity was also significantly different between groups (pfwe = 0.035); the association was negative in CHR with poor outcomes (pfwe = 0.012), but non-significant in CHR with good outcomes. Furthermore, the correlation between right hippocampal rCBF and striatal dopamine function predicted a longitudinal increase in the severity of positive psychotic symptoms within the total CHR group (p = 0.041). There were no differences in rCBF, dopamine, or their associations in the total CHR group relative to controls. These findings indicate that altered interactions between the hippocampus and the subcortical dopamine system are implicated in the pathophysiology of adverse outcomes in the CHR state.

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