scholarly journals Flower diversity and bee reproduction in an arid ecosystem

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e2250 ◽  
Author(s):  
Jimena Dorado ◽  
Diego P. Vázquez

Background:Diverse flower communities are more stable in floral resource production along the flowering season, but the question about how the diversity and stability of resources affect pollinator reproduction remains open. High plant diversity could favor short foraging trips, which in turn would enhance bee fitness. In addition to plant diversity, greater temporal stability of floral resources in diverse communities could favor pollinator fitness because such communities are likely to occupy the phenological space more broadly, increasing floral availability for pollinators throughout the season. In addition, this potential effect of flower diversity on bee reproduction could be stronger for generalist pollinators because they can use a broader floral spectrum. Based on above arguments we predicted that pollinator reproduction would be positively correlated to flower diversity, and to temporal stability in flower production, and that this relationship would be stronger for the most generalized pollinator species.Materials and Methods:Using structural equation models, we evaluated the effect of these variables and other ecological factors on three estimates of bee reproduction (average number of brood cells per nest per site, total number of brood cells per site, and total number of nests per site), and whether such effects were modulated by bee generalization on floral resources.Results:Contrary to our expectations, flower diversity had no effect on bee reproduction, stability in flower production had a weakly negative effect on one of the bee reproductive variables, and the strength of the fitness-diversity relationship was unrelated to bee generalization. In contrast, elevation had a negative effect on bee reproduction, despite the narrow elevation range encompassed by our sites.Discussion:Flower diversity did not affect the reproduction of the solitary bees studied here. This result could stem from the context dependence of the diversity-stability relationship, given that elevation had a positive effect on flower diversity but a negative effect on bee reproduction. Although high temporal stability in flower production is expected to enhance pollinator reproduction, in our study it had a weakly negative—instead of positive—effect on the average number of brood cells per nest. Other environmental factors that vary with elevation could influence bee reproduction. Our study focused on a small group of closely-related bee species, which cautions against generalization of our findings to other groups of pollinators. More studies are clearly needed to assess the extent to which pollinator demography is influenced by the diversity of floral resources.

2016 ◽  
Author(s):  
Jimena Dorado ◽  
Diego P. Vázquez

Background. Diverse flower communities are more stable in floral resource production along the flowering season, but the question about how the diversity and stability of resources affect pollinator reproduction remains open. High plant diversity could favor short foraging trips, which in turn would enhance bee fitness. In addition to plant diversity, greater temporal stability of floral resources in diverse communities could favor pollinator fitness because such communities are likely to occupy the phenological space more broadly, increasing floral availability for pollinators throughout the season. In addition, this potential effect of flower diversity on bee reproduction could be stronger for generalist pollinators because they can use a broader floral spectrum. Based on above arguments we predicted that pollinator reproduction would be positively correlated to flower diversity, and to temporal stability in flower production, and that this relationship would be stronger for the most generalized pollinator species. Materials & Methods. Using structural equation models, we evaluated the effect of these variables and other ecological factors on three estimates of bee reproduction, and whether such effects were modulated by bee generalization on floral resources. Results. Contrary to our expectations, flower diversity had no effect on bee reproduction, stability in flower production had a weakly negative effect on one of the bee reproductive variables, and the strength of the fitness-diversity relationship was unrelated to bee generalization. In contrast, elevation had a weak, non significant negative effect on bee reproduction, despite the narrow elevation range encompassed by our sites. Discussion. Flower diversity did not affect the reproduction of the solitary bees studied here. Although high temporal stability in flower production is expected to enhance pollinator reproduction, in our study it had a weakly negative---instead of positive---effect on the average number of brood cells per nest. Other environmental factors that vary with elevation could influence bee reproduction. Our study focused on a small group of closely-related bee species, which cautions against generalization of our findings to other groups of pollinators. More studies are clearly needed to assess the extent to which pollinator demography is influenced by the diversity of floral resources.


2016 ◽  
Author(s):  
Jimena Dorado ◽  
Diego P. Vázquez

Background. Diverse flower communities are more stable in floral resource production along the flowering season, but the question about how the diversity and stability of resources affect pollinator reproduction remains open. High plant diversity could favor short foraging trips, which in turn would enhance bee fitness. In addition to plant diversity, greater temporal stability of floral resources in diverse communities could favor pollinator fitness because such communities are likely to occupy the phenological space more broadly, increasing floral availability for pollinators throughout the season. In addition, this potential effect of flower diversity on bee reproduction could be stronger for generalist pollinators because they can use a broader floral spectrum. Based on above arguments we predicted that pollinator reproduction would be positively correlated to flower diversity, and to temporal stability in flower production, and that this relationship would be stronger for the most generalized pollinator species. Materials & Methods. Using structural equation models, we evaluated the effect of these variables and other ecological factors on three estimates of bee reproduction, and whether such effects were modulated by bee generalization on floral resources. Results. Contrary to our expectations, flower diversity had no effect on bee reproduction, stability in flower production had a weakly negative effect on one of the bee reproductive variables, and the strength of the fitness-diversity relationship was unrelated to bee generalization. In contrast, elevation had a weak, non significant negative effect on bee reproduction, despite the narrow elevation range encompassed by our sites. Discussion. Flower diversity did not affect the reproduction of the solitary bees studied here. Although high temporal stability in flower production is expected to enhance pollinator reproduction, in our study it had a weakly negative---instead of positive---effect on the average number of brood cells per nest. Other environmental factors that vary with elevation could influence bee reproduction. Our study focused on a small group of closely-related bee species, which cautions against generalization of our findings to other groups of pollinators. More studies are clearly needed to assess the extent to which pollinator demography is influenced by the diversity of floral resources.


2013 ◽  
Vol 34 (3) ◽  
pp. 159-169 ◽  
Author(s):  
Sevtap Cinan ◽  
Aslı Doğan

This research is new in its attempt to take future time orientation, morningness orientation, and prospective memory as measures of mental prospection, and to examine a three-factor model that assumes working memory, mental prospection, and cognitive insight are independent but related higher-order cognitive constructs by using confirmatory factor analysis (CFA). The three-factor model produced a good fit to the data. An alternative one-factor model was tested and rejected. The results suggest that working memory and cognitive insight are distinguishable, related constructs, and that both are distinct from, but negatively associated with, mental prospection. In addition, structural equation modeling (SEM) showed that working memory had a strong positive effect on cognitive insight and a moderate negative effect on mental prospection.


2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Ilham Akbar

The research entitled �The Influence of Relationship Marketing and Relationship Quality Towards Customer Loyalty with Customer Satisfaction as The Intervening Variable on Mulleg Perfume Product in Purwokerto� aims to determine the impact of relationship marketing and relationship quality towards customer satisfaction and customer loyalty and to determine whether customer satisfaction could become the intervening variable. The hypothesis of this research is the relationship marketing has negative effect towards customer satisfaction, the relationship marketing has positive effect towards customer loyalty, the relationship quality has positively effect towards customer satisfaction, the relationship quality has positively effect towards the customer loyalty, and the customer loyalty could be able to mediate the influence of relationship marketing and relationship quality toward customer loyalty.� The analysis method that used on this research is the structural equation modeling.The results show that the relationship marketing has positive and significant effect towards customer satisfaction. It will increase the customer satisfaction of Mulleg Aromatic perfume product in Purwokerto. The relationship quality has positive and significant effect towards customer satisfaction, so it will increase the customer satisfaction of Mulleg Aromatic perfume product in Purwokerto. The relationship marketing has positive and significant effect towards customer loyalt. It will increase the customer loyalty of Mulleg Aromatic perfume product in Purwokerto. The relationship quality has positive and significant effect towards the customer loyalty. The Customer Satisfaction has positive and significant effect towards customer loyalty. The customer satisfaction could mediate the influence of relationship marketing towards the customer loyalty on Mulleg Aromatic perfume product in Purwokerto. The customer satisfaction could mediate the influence of relationship quality towards the customer loyalty of Mulleg Aromatic perfume product in Purwokerto.�Keywords : Relationship Marketing , Relationship Quality , Customer Satisfaction and Customer Loyalty�


2020 ◽  
pp. 521-536
Author(s):  
Elia Ardyan ◽  
Vincent Didiek Wiet Aryanto

The purpose of this paper is to determine the effect of the antecedents of e-news brand trust and want to determine the consequences of e-news brand trust. The model used in this study were tested into two news brands online, which is Detik.com and Kompas.com. Sample of this study composed of 418 respondents, of which 239 respondents are Kompas.com readers and readers of Detik.com comprised of 179 respondents. The analysis used in this study is the Structural Equation Model. Results of this study indicate that both Detik.com and Kompas.com have the same result for the research model used. The result of this research are e-news brand attributes have positive and significant impact on e-news brand experience, e-news brand attributes have a positive and significant impact on e-news brand loyalty, e-news brand experience has negative effect but not significant at the customer confusion, customer confusion, has a negative but not significant effect on e-news trust brand, e -news brand experience has the effect of e-news brand trust and a significant positive effect on brand loyalty e-news.


2020 ◽  
Vol 12 (20) ◽  
pp. 8650
Author(s):  
Yunjeong Kim ◽  
Kyung Wha Oh

Fashion companies are trying to increase the efficiency of their communication with consumers by providing information on sustainable activities or product levels. This study explored the effects of the perceived sustainability level of products offered by sports brands. An online survey was conducted of consumers in their 20s and 30s, and a total of 316 questionnaires were used for the analysis. The structural equation model analysis using AMOS showed that the perceived sustainability level had a positive effect on purchase intention and a negative effect on perceived skepticism. Furthermore, perceived skepticism was confirmed to have a negative effect on purchase intention. By verifying the moderating effect of the perceived brand reputation, it was confirmed that the effect of the perceived sustainability level on purchase intention and the influence of the perceived skepticism on purchase intention differ between high and low brand reputation groups. When the perceived brand reputation is high, the perceived sustainability level has only a direct effect on purchase intention, whereas when the perceived brand reputation is low, only the indirect effect of perceived skepticism appears. This study contributes to the literature and practice by verifying that perceived skepticism plays an important role in the purchasing behavior of sustainable products in fashion.


2020 ◽  
Vol 8 (2) ◽  
pp. 1424-1454
Author(s):  
Ela Sibel BAYRAK MEYDANOĞLU ◽  
Ahmet Mete ÇİLİNGİRTÜRK ◽  
Rıza ÖZTÜRK ◽  
Müge KLEIN

The use of AR technology for advertising is becoming more and more popular. For the efficacy of AR ad campaigns, consumers' attitudes towards AR ads are decisive. One of the major elements that determines consumers’ attitudes towards advertising is the perceived value of the ad. The aim of this study is to analyze the relationship between AR ad value and consumer attitude and to investigate the factors that affect the perceived value of AR ads among the youth both in Turkey and Germany. The mentioned relations were represented in a research model developed in the study. It was proposed that informativeness, entertainment, novelty, interactivity and self-efficacy have a positive effect on advertising value while irritation and deceptiveness have a negative effect. It was also proposed that ad value affects consumers’ attitudes positively. To test the proposed hypotheses, online surveys were conducted among a group of 365 respondents in Germany and a group of 391 respondents in Turkey. The survey results were then tested by Structural Equation Modeling (SEM). Contrary to expectations, the proposed research model as a whole did not fit and the hypotheses were not supported for Turkish consumers. For German consumers the model was fitted and the hypotheses were supported.


Author(s):  
Fatrilia Rasyi Radita ◽  
Whan Augustin Ainul Amri ◽  
Nana Supiana ◽  
Ipang Sasono ◽  
Tias Pramono ◽  
...  

The purpose of this research is to analyse the effect of religiosity and work-family conflict towards employee performance through job satisfaction as an intervening variable to the workers of the manufacturing industry by taking 120 workers as samples. This research used a questionnaire as the method of data collection. Whereas, the analysis method used Structural Equation Modelling(SEM), Smart PLS v.3.0. The result of this research showed that religiosity has a significant positive effect on job satisfaction, the work-family conflict has a significant negative effect on job satisfaction, religiosity has a significant positive effecton employee performance, work-family conflict does not significantly affect employee performance, job satisfaction has a significant positive effect to employee performance, religiosity has a significant positive effect to employee performance through job satisfaction as an intervening variable, work-family conflict does not significantly affect the employee performance through job satisfaction as an intervening variable. The result of this research could be used as a basis to improve and maintain a company’s performance through religious improvement and concern towards work-family conflict experienced by the workers. Keywords: Job satisfaction, employee performance, religiosity, work-family conflict


2016 ◽  
Vol 7 (1) ◽  
pp. 16
Author(s):  
Hariyadi Tri Wahyu Putra

The background of this research focused on complaint management in catering service in Jakarta, thus focused on justice or fairness theory to explain satisfaction with the complaint handling process with post complaint customer behaviour such as word of mouth (WOM) or repurchase intentions.  The objective (s) of this research was to examine the impact of WOM as mediating variable to perceived fairness, satisfaction, and repurchase intentions. This will hopefully. shed some more light on the post complaint customer behavior process especially in catering service. Data analysis in this research used Structural Equation Model (SEM) with AMOS 4.0 software. Perceived fairness would have a positive effect on satisfaction, but would not have a positive effect on WOM valance and repurchase intentions. Perceived fairness would have a negative effect on WOM dissemination. WOM valance would have a positive effect on repurchase intentions, but would not on satisfaction. WOM dissemination would have a negative effect on satisfaction and WOM valance. but would not significantly on repurchase intentions. Satisfaction would not always have a positive effect on repurchase intentions.


2019 ◽  
Vol 4 (1) ◽  
pp. 13
Author(s):  
Saka Haditya Murpraptomo ◽  
Lilik Noor Yuliati ◽  
Bagus Sartono

The increasing need for health services, peoples who lived in the Pekayon, Bekasi City were given the opportunity to choose the right clinic. Word of mouth is a marketing technique that can be used by clinics. This study aims to analyze the effects of the marketing mix, perceived risk, and satisfaction on word of mouth at XYZ clinic. The research is a descriptive method with a survey using questionnaires and 200 respondents as the sample. Furthermore, the data analysis technique is descriptive with SPSS16.0 software and Structural Equation Model (SEM) with LISREL 8.70. Based on the results, it can be concluded that the marketing mix has a positive effect on perceived risk, marketing mix has a positive effect on satisfaction, perceived risk has a negative effect on satisfaction, marketing mix has a positive effect on word of mouth, perceived risk has a negative effect on word of mouth, and satisfaction has a positive effect on word of mouth. Referring to these conclusions, it can be confirmed that the clinical management of doctor XYZ needs to improve employee services, convenience the patient that this clinic has expert doctors, and utilizing the use of social media as a marketing strategy.


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