scholarly journals A global model of island species–area relationships

2019 ◽  
Vol 116 (25) ◽  
pp. 12337-12342 ◽  
Author(s):  
Thomas J. Matthews ◽  
François Rigal ◽  
Kostas A. Triantis ◽  
Robert J. Whittaker
Keyword(s):  
Species Richness ◽  
Structural Equation ◽  
Negative Relationship ◽  
Equation Model ◽  
Local Scale ◽  
Ecological Process ◽  
Global Pattern ◽  
Island Species ◽  
Species Area ◽  
Globally Distributed

The increase in species richness with island area (ISAR) is a well-established global pattern, commonly described by the power model, the parameters of which are hypothesized to vary with system isolation and to be indicative of ecological process regimes. We tested a structural equation model of ISAR parameter variation as a function of taxon, isolation, and archipelago configuration, using a globally distributed dataset of 151 ISARs encompassing a range of taxa and archipelago types. The resulting models revealed a negative relationship between ISAR intercept and slope as a function of archipelago species richness, in turn shaped by taxon differences and by the amount and disposition of archipelago area. These results suggest that local-scale (intra-archipelago) processes have a substantial role in determining ISAR form, obscuring the diversity patterns predicted by island theory as a function of archipelago isolation. These findings have implications for the use and interpretation of ISARs as a tool within biogeography, ecology, and conservation.

Impact of regulatory focus on security technostress and organizational outcomes: the moderating effect of security technostress inhibitors

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Inho Hwang ◽  
Sanghyun Kim ◽  
Carl Rebman
Keyword(s):  
Regulatory Focus ◽  
Structural Equation ◽  
Negative Relationship ◽  
Organizational Outcomes ◽  
Equation Model ◽  
Organizational Level ◽  
Moderating Effects ◽  
Content Type ◽  
Individual Personality

PurposeOrganizations invest in information security (IS) technology to be more competitive; however, implementing IS measures creates environmental conditions, such as overload uncertainty, and complexity, which can cause employees technostress, eventually resulting in poor security performance. This study seeks to contribute to the intersection of research on regulatory focus (promotion and prevention) as a type of individual personality traits, technostress, and IS.Design/methodology/approachA survey questionnaire was developed, collecting 346 responses from various organizations, which were analyzed using the structural equation model approach with AMOS 22.0 to test the proposed hypotheses.FindingsThe results indicate support for both the direct and moderating effects of security technostress inhibitors. Moreover, a negative relationship exists between promotion-focused employees and facilitators of security technostress, which negatively affects strains (organizational commitment and compliance intention).Practical implicationsOrganizations should develop various programs and establish a highly IS-aware environment to strengthen employees' behavior regarding IS. Furthermore, organizations should consider employees' focus types when engaging in efforts to minimize security technostress, as lowering technostress results in positive outcomes.Originality/valueIS management at the organizational level is directly related to employees' compliance with security rather than being a technical issue. Using the transaction theory perspective, this study seeks to enhance current research on employees' behavior, particularly focusing on the effect of individuals' personality types on IS. Moreover, this study theorizes the role of security technostress inhibitors for understanding employees' IS behaviors.

scholarly journals Relationship between Emotional Intelligence, Social Skills and Peer Harassment. A Study with High School Students

2020 ◽  
Vol 17 (12) ◽  
pp. 4208 ◽  
Author(s):  
Rubén Trigueros ◽  
Elena Sanchez-Sanchez ◽  
Isabel Mercader ◽  
José M. Aguilar-Parra ◽  
Remedios López-Liria ◽  
...  
Keyword(s):  
High School ◽  
Emotional Intelligence ◽  
High School Students ◽  
Social Skills ◽  
Structural Equation ◽  
Negative Relationship ◽  
Equation Model ◽  
School Students ◽  
Peer Harassment ◽  
Mood Scale

The objective of this study was to analyse the relationship between emotional intelligence and social skills, and how these two variables influence bullying. In this study, 912 Spanish high school students, 471 boys and 441 girls aged 14–16 years, participated, who were administered the Spanish version of the Trait Meta Mood Scale 24, the “Bateria de socialización BAS-3” and the Peer Harassment Questionnaire. To analyse the results, a structural equation model was made. The results reflected a positive relationship between emotional intelligence and social skills (B = 0.44, p < 0.001), and a negative relationship with respect to bullying (B = −0.56, p < 0.001). In turn, social skills reflected a negative relationship with respect to bullying (B = −0.38, p < 0.001). These results reflect the need to implement educational programs focused on the development of emotional intelligence in the classroom, as a means to try to stop bullying behaviours in the classroom.

scholarly journals Maintenance of biodiversity on islands

2016 ◽  
Vol 283 (1829) ◽  
pp. 20160102 ◽  
Author(s):  
Ryan A. Chisholm ◽  
Tak Fung ◽  
Deepthi Chimalakonda ◽  
James P. O'Dwyer
Keyword(s):  
Species Richness ◽  
Island Biogeography ◽  
Mechanistic Model ◽  
Neutral Theory ◽  
Small Island ◽  
Small Islands ◽  
Island Area ◽  
Island Species ◽  
Theory Of Island Biogeography ◽  
Species Area

MacArthur and Wilson's theory of island biogeography predicts that island species richness should increase with island area. This prediction generally holds among large islands, but among small islands species richness often varies independently of island area, producing the so-called ‘small-island effect’ and an overall biphasic species–area relationship (SAR). Here, we develop a unified theory that explains the biphasic island SAR. Our theory's key postulate is that as island area increases, the total number of immigrants increases faster than niche diversity. A parsimonious mechanistic model approximating these processes reproduces a biphasic SAR and provides excellent fits to 100 archipelago datasets. In the light of our theory, the biphasic island SAR can be interpreted as arising from a transition from a niche-structured regime on small islands to a colonization–extinction balance regime on large islands. The first regime is characteristic of classic deterministic niche theories; the second regime is characteristic of stochastic theories including the theory of island biogeography and neutral theory. The data furthermore confirm our theory's key prediction that the transition between the two SAR regimes should occur at smaller areas, where immigration is stronger (i.e. for taxa that are better dispersers and for archipelagos that are less isolated).

scholarly journals Evaluating the correlation between area, environmental heterogeneity, and species richness using terrestrial isopods (Oniscidea) from the Pontine Islands (West Mediterranean)

2021 ◽  
Author(s):  
Gabriele Gentile ◽  
Roberto Argano ◽  
Stefano Taiti
Keyword(s):  
Species Richness ◽  
Environmental Heterogeneity ◽  
Geographic Distance ◽  
Habitat Diversity ◽  
Tyrrhenian Sea ◽  
Island Species ◽  
Random Placement ◽  
Species Area ◽  
Pontine Islands ◽  
Volcanic Islands

AbstractArea and environmental heterogeneity influence species richness in islands. Whether area or environmental heterogeneity is more relevant in determining species richness is a central issue in island biogeography. Several models have been proposed, addressing the issue, and they can be reconducted to three main hypotheses developed to explain the species-area relationship: (1) the area-per se hypothesis (known also as the extinction-colonisation equilibrium), (2) the random placement (passive sampling), and the (3) environmental heterogeneity (habitat diversity). In this paper, considering also the possible influence of geographic distance on island species richness, we explore the correlation between area, environmental heterogeneity, and species richness by using faunistic data of Oniscidea inhabiting the Pontine Islands, a group of five small volcanic islands and several islets in the Tyrrhenian Sea, located about 60 km from the Italian mainland. We found that the colonisation of large Pontine Islands may occur via processes independent of geographic distance which could instead be an important factor at a much smaller scale. Such processes may be driven by a combination of anthropogenic influences and natural events. Even in very small-size island systems, environmental heterogeneity mostly contributes to species richness. Environmental heterogeneity could influence the taxocenosis structure and, ultimately, the number of species of Oniscidea via direct and indirect effects, these last mediated by area which may or may not have a direct effect on species richness.

Beyond Dutch Disease: Are there mediators of the mining–tourism nexus?

2020 ◽  
pp. 135481661989922
Author(s):  
Char-lee Moyle ◽  
Fabrizio Carmigani ◽  
Brent Moyle ◽  
Sajid Anwar
Keyword(s):  
Structural Equation ◽  
Negative Relationship ◽  
Equation Model ◽  
Dutch Disease ◽  
Data Set ◽  
International Tourist ◽  
Resource Intensity ◽  
Governance Quality ◽  
The Relationship ◽  
Unbalanced Panel Data

In recent years, significant work has emerged exploring the relationship between tourism and mining. Generally, the relationship is considered to be negative, the result of crowding out of tourism during mining booms. However, the relationship is likely to be more complicated with mining affecting tourism both directly and indirectly. The indirect effects arise from the mediation role played by foreign direct investment (FDI), governance quality, trade and the real exchange rate. To verify this hypothesis, this article uses an unbalanced panel data set that covers 190 countries over the 2002–2017 period. A structural equation model is used to account for the mediating relationships. The results show a direct negative relationship between natural resource intensity and international tourist arrivals, as well as indirect positive relationship mediated by FDI partially offset by an indirect negative relationship mediated by governance.

Antecedents of consumer animosity and the role of product involvement on purchase intentions

2017 ◽  
Vol 32 (1) ◽  
pp. 42-57 ◽  
Author(s):  
Ji Eun Park ◽  
Sung-Joon Yoon
Keyword(s):  
Purchase Intention ◽  
Structural Equation ◽  
Negative Impact ◽  
Negative Relationship ◽  
Equation Model ◽  
Purchase Intentions ◽  
Product Involvement ◽  
Content Type ◽  
Consumer Animosity

Purpose The purpose of this paper is to further our understanding of the sources of consumer animosity and the moderating role of product involvement on purchase intentions. Design/methodology/approach Animosity is examined in the context of South Korean consumers’ purchase intentions toward Japanese products. A structural equation model was estimated in Lisrel 8.80 to assess the proposed model. Findings The results offer evidence that consumer ethnocentrism and susceptibility to normative influence have a positive relationship with animosity while cosmopolitanism has a negative relationship with animosity. Furthermore, animosity negatively influences intentions to purchase for high-involvement products, but not for low-involvement products. Practical implications International marketing managers can better identify the risk that consumer animosity poses to their products and services based on level of product involvement and characteristics of the market segment. Originality/value This study offers clarity to the understanding of animosity by examining additional antecedents of animosity that reflect different world views. It also provides an exception to the previous findings that in general animosity has a negative impact on consumers’ willingness to buy products of countries for which consumers have animosity. In other words, the effect of animosity on purchase intention of products from a disliked country depends on the degree of involvement.

scholarly journals The Effectiveness of Fear of Leprosy as a Mediator of the Relationship Between Resilience, Coping Resources, and Coping: A Correlation Study Through The Structural Equation Model in Patients with Leprosy

2021 ◽  
Author(s):  
Cita Rosita Sigit Prakoeswa ◽  
Medhi Denisa Alinda ◽  
Bagus Haryo Kusumaputra ◽  
Abd. Nasir ◽  
Ah Yusuf ◽  
...  
Keyword(s):  
Structural Equation Model ◽  
Structural Equation ◽  
Positive Relationship ◽  
Negative Relationship ◽  
Equation Model ◽  
Coping Resources ◽  
Equation Modeling ◽  
Adaptive Coping ◽  
And Coping ◽  
The Relationship

Abstract Background: Strengthening the argument for better problem solving can reduce excessive worry, so as to reduce fear due to leprosy disability, because the impact arising from leprosy disability can affect the chosen coping strategy. Methods: The purpose of this study was to test the model of the relationship between resilience, coping resources, and coping through structural equation modeling to identify the role of disability fear as a mediator. The leprosy disability fear scale, coping resources scale, and coping scale have been used to collect data, with 125 participants involved in this study through convenience sampling, consisting of women (33.60%), men 66.40 %. Structural equation model is used to test through cross-sectional design. Results: The results of the study report that there is a negative relationship between coping resources and fear of leprosy disability, and it is known that there is a positive relationship with coping. Meanwhile, The test results showed a negative relationship between resilience and fear of leprosy disability, and a positive relationship with coping. Furthermore, to coping, fear of leprosy disability shows a negative relationship. Conclusion: Coping in seeking health assistance is strongly influenced by resilience and coping resources, both directly and indirectly through the mediator of fear of leprosy disability. As a result, in seeking health assistance, individuals who have strong self-defense and have extensive coping resources, have adaptive coping, thereby reducing the fear of leprosy disability, and thus can maintain adaptive coping during the leprosy healing process.

scholarly journals The Effectiveness of Fear of Leprosy As a Mediator of The Relationship Between Resilience, Coping Resources, and Coping: A Correlation Study Through The Structural Equation Model In Patients With Leprosy

2021 ◽  
Author(s):  
Cita Rosita Sigit Prakoeswa ◽  
Medhi Denisa Alinda ◽  
Bagus Haryo Kusumaputra ◽  
Abd. Nasir ◽  
Ah Yusuf ◽  
...  
Keyword(s):  
Structural Equation Model ◽  
Structural Equation ◽  
Positive Relationship ◽  
Negative Relationship ◽  
Equation Model ◽  
Coping Resources ◽  
Equation Modeling ◽  
Adaptive Coping ◽  
And Coping ◽  
The Relationship

Abstract Background: Strengthening the argument for better problem solving can reduce excessive worry, so as to reduce fear due to leprosy disability, because the impact arising from leprosy disability can affect the chosen coping strategy. Methods: The purpose of this study was to test the model of the relationship between resilience, coping resources, and coping through structural equation modeling to identify the role of disability fear as a mediator. The leprosy disability fear scale, coping resources scale, and coping scale have been used to collect data, with 125 participants involved in this study through convenience sampling, consisting of women (33.60%), men 66.40 %. Structural equation model is used to test through cross-sectional design. Results: The results of the study report that there is a negative relationship between coping resources and fear of leprosy disability, and it is known that there is a positive relationship with coping. Meanwhile, The test results showed a negative relationship between resilience and fear of leprosy disability, and a positive relationship with coping. Furthermore, to coping, fear of leprosy disability shows a negative relationship. Conclusion: Coping in seeking health assistance is strongly influenced by resilience and coping resources, both directly and indirectly through the mediator of fear of leprosy disability. As a result, in seeking health assistance, individuals who have strong self-defense and have extensive coping resources, have adaptive coping, thereby reducing the fear of leprosy disability, and thus can maintain adaptive coping during the leprosy healing process.

scholarly journals The relationship between the quality of school life and the school burnout

2020 ◽  
Vol 9 (3) ◽  
pp. 531
Author(s):  
Selim Gündoğan ◽  
Hatice Özgen
Keyword(s):  
Quality Of Life ◽  
Structural Equation ◽  
School Quality ◽  
Negative Relationship ◽  
Equation Model ◽  
School Life ◽  
School Students ◽  
School Burnout ◽  
The Relationship

School burnout has been a research subject during recent years and is a wide case among students is associated with many factors. Among these factors, school-related concepts are remarkable. Within this study, it is aimed to investigate the relationship between school quality, school burnout and school burnout. The participant group of the study consists of a total of 364 secondary school students, 181 girls and 183 boys, whose ages are in the range of 10-15, attending various secondary schools. This sampling was determined by the maximum diversity sampling method. The data were collected with the school quality of life and school burnout scale. In the analysis of the data, correlation and structural equation model analysis were administrated. It was concluded that there is a negative relationship between school quality of life and school burnout, and that school quality of life is a negative predictor of school burnout. The results were discussed through the literature review and suggestions were made for researchers and practitioners.

Sign in / Sign up

Export Citation Format

Share Document