Competition between Two Species of Mites.: II. Factors Influencing Intensity

1963 ◽  
Vol 95 (1) ◽  
pp. 45-57 ◽  
Author(s):  
W. H. Foott
Keyword(s):  
Host Plant ◽  
Rate Of Development ◽  
Factors Influencing ◽  
Inhibitory Factors ◽  
Intensity Of Competition ◽  
Different Levels

AbstractProduction of webbing, greater fecundity, faster rate of development, and greater ability to thrive on foliage injured by feeding enabled populations of T. telarius to suppress those of P. ulmi on peach foliage in a greenhouse and insectary. However, these inhibitory factors were non-operative in an orchard environment in southwestern Ontario.The tendency of the two species to populate different levels of a host plant, and of P. ulmi to utilize the upper surfaces of leaves more than T. telarius, each decreased the intensity of competition. The suppression of P. ulmi in an insectary or greenhouse was delayed but not prevented by the above factors.

scholarly journals Some ecological factors influencing the breeding success of the Brenton Blue butterfly, Orachrysops niobe (Trimen) (Lepidoptera: Lycaenidae)

Koedoe ◽  
2002 ◽  
Vol 45 (2) ◽  
Author(s):  
D.A. Edge
Keyword(s):  
Host Plant ◽  
Breeding Season ◽  
Breeding Success ◽  
Ecological Factors ◽  
Future Research ◽  
Plant Abundance ◽  
Factors Influencing ◽  
Nectar Sources ◽  
Management Techniques ◽  
Blue Butterfly

The Brenton Blue butterfly, Orachrysops niobe (Trimen, 1862) (Lepidoptera:Lycaenidae), is endemic to the southern Cape and is currently listed as Endangered. This study looks at some of the key ecological factors influencing the breeding success of the species—host plant abundance and condition, nectar sources, climate/ microclimate, and vegetation management techniques. The adult butterfly population was monitored over an entire breeding season; host plants were identified and individually monitored; and egg counts were done. This enabled the effects of a number of different management techniques to be evaluated (burning, cutting, physical removal of invasive elements, and combinations thereof). A fivefold increase in the population of O. niobe was observed over the breeding season. This increase was positively correlated to a similar increase in host plant abundance in the areas where cutting and physical removal of invasive elements was practiced. Burning, by contrast, appeared to have a negative impact on host plant and butterfly abundance over the same period. Impacts of other factors such as climate, nectar sources and the natural strength of the second brood are discussed. A hypothesis, of megaherbivore activity as the principal historical disturbance mechanism promoting locally favourable conditions for O. niobe to establish and maintain colonies, is proposed. Recommendations for reserve management and future research are made.

Health Information Technology and Diabetes Management: A Review of Motivational and Inhibitory Factors

2020 ◽  
Vol 16 ◽  
Author(s):  
Zari Dehnavi ◽  
Haleh Ayatollahi ◽  
Morteza Hemmet ◽  
Rowshanak Abbasi
Keyword(s):  
Information Technology ◽  
Health Information Technology ◽  
Health Information ◽  
Diabetes Management ◽  
Training System ◽  
Diabetic Patients ◽  
Technical Problems ◽  
Factors Influencing ◽  
Inhibitory Factors

Background: Health information technology helps patients to take better care of themselves and improves health status of patients with chronic diseases, such as diabetes. Objective: This study aimed to identify factors influencing the use of health information technology in diabetes management. Methods: This was a review study conducted in 2019. To obtain the related articles, databases including Scopus, Web of Science, Proquest and PubMed were searched and the time frame was between 2010 and 2018. Initially, 1159 articles were retrieved and after screening 28 articles were selected to be included in the study. Results: Factors influencing the use of health information technology in diabetes management could be divided into the motivational and inhibitory factors and each of them could be categorized into five groups of organizational, technical, economic, individual and ethical/legal factors. The motivational factors included training, system ease of use, economic support, having computer literacy, and maintaining privacy and confidentiality. The inhibitory factors included a lack of long-term planning, technical problems, inadequate financial resources, old age, and concerns over confidentiality issues. Conclusion: Identifying motivational and inhibitory factors can help to make better use of technology for diabetes management. This approach, in turn, can improve the acceptability of the technology and saves cost, reduces long-term complications of diabetes, and improves quality of life in diabetic patients.

scholarly journals Root and shoot development of Rumex species under waterlogged conditions

1989 ◽  
Vol 67 (6) ◽  
pp. 1865-1869 ◽  
Author(s):  
L. A. C. J. Voesenek ◽  
C. W. P. M. Blom ◽  
R. H. W. Pouwels
Keyword(s):  
Root Length ◽  
Sand Culture ◽  
Rumex Acetosa ◽  
Rumex Crispus ◽  
Relative Growth ◽  
Significant Development ◽  
Vertical Root Distribution ◽  
Factors Influencing ◽  
Different Levels ◽  
Field Location

The responses of Rumex acetosa, Rumex crispus, and Rumex palustris to different levels of waterlogging were studied in sand culture experiments. Rumex crispus and R. palustris developed new flooding-resistant roots as a response to waterlogging. The growth of these new roots caused a changed vertical distribution of the root length in these species; most root length was concentrated in the upper 10 cm of the soil. Rumex acetosa did not show significant development of flooding-resistant roots and did not change its vertical root distribution during flooding of the soil. The results of the experiments indicate that growth expressed as relative growth rate is positively correlated to the development of new flooding-resistant roots under waterlogged conditions. We concluded that R. crispus and R. palustris are more resistant to waterlogging than R. acetosa; this agrees with the distribution of these Rumex species in the field. However, waterlogging resistance is probably only one of the factors influencing differences in field location between the Rumex species.

scholarly journals COMPARATIVE ANALYSIS OF INTERACTION OF THE NATIONAL FINANCIAL AND CREDIT SYSTEMS OF THE EAEU COUNTRIES

THE BULLETIN ◽  
2021 ◽  
Vol 3 (391) ◽  
pp. 27-32
Author(s):  
G.K. Bekbusinova ◽  
A.B. Baymbetova ◽  
А.D. Meldebekova ◽  
А.К. Zhakhmetova ◽  
Zbigniew Korzeb
Keyword(s):  
Comparative Analysis ◽  
Financial Markets ◽  
Systematic Approach ◽  
Swot Analysis ◽  
Cash Flows ◽  
Economic Research ◽  
Factors Influencing ◽  
Redistribution Mechanism ◽  
Institutional Foundations ◽  
Different Levels

The EAEU countries attach great importance to the integration interaction of financial and credit systems, since this can be considered as the creation of an accelerator for the development of financial relations between countries at a new economic level, when an effective redistribution mechanism of cash flows is formed, ensuring an increase in the investment development of countries. At the same time, a number of contradictions have developed in the formation of conditions for the integration of financial and credit systems, which is caused by differences in the system of institutional foundations for the functioning of national markets, as well as different levels of development of the markets themselves. The research carried out was based on a systematic approach to the problem under study. In the process of work, dialectical, abstract-logical, monographic, economic-mathematical, economic-statistical and other methods of economic research were used. Based on the methods of comparative analysis, the assessment of the development trends of the financial and credit systems of the EAEU countries was carried out, an assessment of the degree of their compatibility in the formation of a single financial market of the EAEU was given. To determine the factors influencing the process of integrating the financial markets of the EAEU countries, the study used a SWOT analysis, which made it possible not only to identify and evaluate the factors, but also to project their impact on the ongoing integration processes.

Initial Adoption vs. Institutionalization of E-Procurement in Construction Firms

2016 ◽  
pp. 1417-1437 ◽  
Author(s):  
De Chun Huang ◽  
Quang Dung Tran ◽  
Thi Quynh Trang Nguyen ◽  
Sajjad Nazir
Keyword(s):  
Technology Infrastructure ◽  
Role Of Government ◽  
Construction Firms ◽  
Construction Enterprises ◽  
Knowledge Infrastructure ◽  
Factors Influencing ◽  
Government Leadership ◽  
Practical Implications ◽  
Different Levels

This study explores the role of government in fostering construction firms move from initial adoption to institutionalization of e-procurement in developing countries' context. It proposes the research model that consists of five external environmental constructs that are considered as factors influencing the different levels of e-procurement adoption. It uses PLS-SEM to analyze the data collected from 112 construction businesses in Vietnam in 2012. It finds that the role of government has an extremely significant influence on a decision of initial adoption of e-procurement in construction enterprises through government leadership, legal and regulatory infrastructure, information and technology infrastructure (ITI), and socio-economic and knowledge infrastructure. However, the role of government is less important to a decision of institutionalization of e-procurement when only ITI significantly influences on the decision-making. As a result, useful theoretical and practical implications are proposed.

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