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Green innovation is garnering increasing attention in business, academic and policy circles as a route to sustainable growth and development. Governments have introduced a range of policies to encourage and enable firms to introduce and expand their offerings of environmental friendly goods and services. While environmental regulation has been shown to be an important driver of green innovation, little is known about whether other types of polices, such as financial incentives, technical and marketing supports, and assistance with identifying potential markets, are important to firms of all sizes at different stages of the green innovation process (i.e., at product/service launch vs. product/service expansion). Using data from the European Commission, the results show that policy support to identify markets or customers is deemed important by firms of all sizes to introduce green goods and services. However, this support is no longer perceived as important to expand firms' green portfolio. This suggests firms capitalise by using their existing markets or customers. The results do not lend support to the view of small firms as the most resource constrained and hence needing the greatest policy supports. Overall, the results point to the need for a variety of policy supports targeted at (1) firms of different sizes and (2) by stage of the green innovation process. [ABSTRACT FROM AUTHOR]

Public health interventions such as occupational social distancing and remote working, while critical to slow the spread of the coronavirus, are severely disrupting labour markets. We examine the impact of educational attainment on a worker’s potential to engage in both occupational social distancing in the workplace and working from home requirements for the Irish case. We identify that remote working has a more significant economic effect on labour market inequalities than occupational social distancing. In fact, the results indicate the relationship between occupational social distancing and differences in worker demographics are small. Remote working inequalities are primarily related to differences in individual education levels and a worker’s gender. [ABSTRACT FROM AUTHOR]

Innovation is essential for driving business survival, development, and growth. Today, managers within firms continuously search for new ways to gain competitive advantage. In many cases, this comes from the effective use of intangible assets such as workplace skills and abilities. Despite this, little is known about what types of skills are required for innovation, whether these vary by innovation-type, or whether it matters if these skills are outsourced. This paper addresses these issues using data collected on eight skill types as part of the 2008–2010 Irish Community Innovation Survey. We find that there is substantial heterogeneity in the effectiveness of skills at generating different kinds of innovation. In addition, for some types of innovation, it is best to develop the skills in-house (e.g., Engineering skills for product innovation) while for others it is best to outsource the skills (e.g., Multimedia skills for process and organisational innovation). [ABSTRACT FROM AUTHOR]

Background: Rising CO2 is expected to result in changes in plant traits that will increase plant productivity for some functional groups. Differential plant responses to elevated CO2 are likely to drive changes in competitive outcomes, with consequences for community structure and plant diversity. Many of the traits that are enhanced under elevated CO2 also confer competitive success to invasive species, and it is widely believed that invasive species will be more successful in high CO2. However, this is likely to depend on plant functional group, and evidence suggests that C3 plants tend to respond more strongly to CO2. Results: We tested the hypothesis that invasive species would be more productive than noninvasive species under elevated CO2 and that stronger responses would be seen in C3 than C4 plants. We examined responses of 15 grass species (eight C3, seven C4), classified as noninvasive or invasive, to three levels of CO2 (390, 700 and 1000 ppm) in a closed chamber experiment. Elevated CO2 decreased conductance and %N and increased shoot biomass and C/N ratio across all species. Differences between invasive and noninvasive species depended on photosynthetic mechanism, with more differences for traits of C3 than C4 plants. Differences in trait means between invasive and noninvasive species tended to be similar across CO2 levels for many of the measured responses. However, noninvasive C3 grasses were more responsive than invasive C3 grasses in increasing tiller number and root biomass with elevated CO2, whereas noninvasive C4 grasses were more responsive than invasive C4 grasses in increasing shoot and root biomass with elevated CO2. For C3 grasses, these differences could be disadvantageous for noninvasive species under light competition, whereas for C4 grasses, noninvasive species may become better competitors with invasive species under increasing CO2. Conclusions: The ecophysiological mechanisms underlying invasion success of C3 and C4 grasses may differ. However, given that the direction of trait differences between invasive and noninvasive grasses remained consistent under ambient and elevated CO2, our results provide evidence that increases in CO2 are unlikely to change dramatically the competitive hierarchy of grasses in these functional groups. [ABSTRACT FROM AUTHOR]

The spotted-wing drosophila (Drosophila suzukii Matsumura) is an invasive species of Asian origin that is now widely distributed in North America and Europe. Because of the female's serrated ovipositor, eggs are laid in preharvest fruit, causing large economic losses in cultivated berries and stone fruit. Modeling D. suzukii population dynamics and potential distribution will require information on its thermal tolerance. Large summer populations have been found in regions with severe winter conditions, though little is known about responses to prolonged low-temperature exposure. We used controlled chambers to examine D. suzukii fecundity, development rate, and mortality across a range of temperatures encompassing the upper and lower thresholds (5–35°C). Optimal temperatures (Topt) were found to be 28.2°C for the development of the egg-to-adult stage, and 22.9°C for reproductive output. No adult eclosion occurred below 8.1°C (Tlower) or above 30.9°C (Tupper). We also investigated survival outcomes following prolonged (42-d) low-temperature exposure to a simulated cold winter (–5, –3, –1, 1, 3, and 5°C). Adult survival was dependent on temperature, with a mean LT50 of 4.9°C. There were no effects of sex, mating status, geographic strain, and photoperiod preexposure on overwintering survival. Thirty-eight percent of females that were mated prior, but not after, prolonged low-temperature exposure produced viable offspring, suggesting that this species may undergo sperm storage. This study provides data on the thermal tolerances of D. suzukii, which can be used for models of D. suzukii population dynamics, degree-day, and distribution models. [ABSTRACT FROM AUTHOR]

Today, firms are faced with a number of environmental challenges, such as global warming, pollution control and declining natural resources. While there is increasing pressure to deliver environmentally friendly products and services, little is known about what drives the many different types of environmental innovation, or how such pursuits' impact firm performance. Using a sample of 2181 firms, this paper examines the factors that drive nine different types of eco-innovation in Ireland, and assesses how such innovations impact firm performance. We find that, while demand-side, supply-side and regulatory drivers impact on the likelihood of a firm engaging in eco-innovation, the relative magnitudes of these impacts vary across the types of eco-innovation considered. Moreover, we find that only two of the nine types of eco-innovation positively impact firm performance. The results point to regulation and customer pressure as viable mechanisms through which firms can be encouraged to eco-innovate. Copyright © 2014 John Wiley & Sons, Ltd and ERP Environment [ABSTRACT FROM AUTHOR]

1. The performance of foliage feeders tends to decrease under elevated CO2, but the responses of phloem-feeding insects have been much more equivocal. As phloem tissues are less accessible than whole-plant tissues, much less is known about how phloem composition is altered under elevated CO2 and the mechanisms driving changes in aphid performance. 2. In this study, the plant mechanisms underlying the performance of Rhopalosiphum padi aphids on Hordeum vulgare (barley) grown under ambient (390 ppm) and elevated (700 ppm) CO2 were examined. We used aphid stylectomy to sample pure phloem from plants in CO2-controlled conditions and high-performance liquid chromatography to analyse phloem samples for amino acid concentrations. 3. Aphid abundance significantly increased by 127% under elevated CO2. Consequently, plant biomass decreased under elevated CO2 in trials with herbivores present, possibly due to the increased herbivore load, but increased when aphids were absent. The intrinsic rate of population increase ( rm) was significantly higher under elevated CO2; however, there were no statistically significant effects on aphid fecundity or development time. The concentration of individual amino acids tended to increase, although these increases were statistically significant in only a few cases. A principal components analysis revealed that the relative abundance (mol %) of those amino acids considered essential for aphids tended to increase under elevated CO2. 4. These results indicate that CO2 may affect nutrient translocation in plants in ways that are contrary to predictions about nitrogen metabolite responses to CO2. Such plant biochemical responses may underlie observations of improved phloem feeder performance under elevated CO2. [ABSTRACT FROM AUTHOR]

Purpose -- Eco-innovation is any form of product, process or organisational innovation that contributes towards sustainable development. Firms can eco-innovate in a variety of ways. The purpose of this paper is to identify nine different eco-innovation activities -- including such items as reducing material use per unit of output, reducing energy use per unit of output, reducing carbon dioxide (CO[sub 2 ]) "footprint" -- and the authors ask whether these act as substitutes or complements to one another. Design/methodology/approach -- Eco-innovation is any form of product, process or organisational innovation that contributes towards sustainable development. Firms can eco-innovate in a variety of ways. In this paper the authors identify nine different eco-innovation activities -- including such items as reducing material use per unit of output, reducing energy use per unit of output, reducing CO[sub 2 ]"footprint" -- and the authors ask whether these act as substitutes or complements to one another. Findings -- Introducing only one eco-innovation activity has little payoff (in terms of turnover per worker) with only those firms who reduce their CO[sub 2] "footprint" having higher levels of turnover per worker. When introducing more than one eco-innovation activity the authors find that certain eco-innovation activities complement one another (e.g. reducing material use within the firm at the same time as improving the ability to recycle the product after use) others act as substitutes (e.g. reducing material use within the firm at the same time as recycling waste, water or materials within the firm). Practical implications -- The results suggest that firms can maximise their productive capacity by considering specific combinations of eco-innovation. This suggests that firms should plan to introduce eco-innovation which act as complements, thereby, boosting productivity. It also suggests that eco- innovation stimuli, introduced by policy makers, should be targeted at complementary eco-innovations. Originality/value -- The paper analyses whether eco-innovations act as complements or substitutes. While a number of studies have analysed the importance of eco-innovation for firm performance, few have assessed the extent to which diverse types of eco-innovation interact with each other to complement or substitute for one another. [ABSTRACT FROM AUTHOR]

Rising atmospheric CO2 has been shown to alter plant nitrogen metabolism, growth and secondary chemistry. We hypothesized that altered aphid performance under elevated CO2 is linked to phloem nitrogen chemistry., Rhopalosiphum padi performance on endophyte-infected or uninfected tall fescue was examined under three levels of CO2 (ambient, 800 and 1000 p.p.m.) and high and low nitrogen fertilization. Ethylenediaminetetracetic acid-facilitated exudation was used to sample phloem sap, followed by quantification of relative amino acid concentrations using reverse-phase high-performance liquid chromatography., Aphid abundance was reduced at 800 p.p.m. relative to ambient CO2 but returned to baseline at 1000 p.p.m. The density of aphids was reduced in both the elevated CO2 treatments. Aphids were unsuccessful at colonizing endophyte-infected plants, possibly as a result of the presence of loline alkaloids., Multivariate analysis showed that certain groups of phloem amino acids were altered by nitrogen fertilization and CO2. We found that four amino acids (valine, arginine, glutamine and aspartate) were correlated with aphid performance. These findings partially explained the effect of plant nitrogen fertilization and elevated CO2 on aphids., The present study represents a first step toward providing a mechanistic explanation of the aphid performance changes that may result from rising atmospheric CO2. [ABSTRACT FROM AUTHOR]

Drosophila suzukii (Matsumura) (Diptera: Drosophilidae) is a fruit pest of Asian origin that invaded North America in 2008. Despite the widespread economic impact of this species, much of the biology and general life history of this pest remains largely unknown. Under optimal laboratory conditions (22°C, ≈25% relative humidity),wemeasured development, survival, fecundity, hatch rate, and sex ratio of a North American ecotype of D. suzukii. Life history traits were used to construct a life table and reproductive schedule, and to calculate the intrinsic rate of population increase. The mean (±SE) total lifespan (egg to adult mortality) was 86.1 ± 4.25 d, with a maximum value of 153.7 d. On average, females produced 5.7 ± 0.24 eggs per day, with a mean total lifetime production of 635.6 eggs. The gross reproductive rate was 317.8 daughter eggs per female and the net reproductive rate was 240.4 daughter eggs per female. The intrinsic rate of natural increase was 0.179. The stable age distribution ( cx ) was comprised of 51% larvae, 25% eggs, 16% pupae, and 8% adults. The sex ratio over time was≈1:1.Weconclude with a comparison of our data with previous work on D. suzukii and other Drosophila, and discuss the implications for control and monitoring of this pest. [ABSTRACT FROM AUTHOR]

1. Elevated CO2 can alter plant physiology and morphology, and these changes are expected to impact diet quality for insect herbivores. While the plastic responses of insect herbivores have been well studied, less is known about the propensity of insects to adapt to such changes. Genetic variation in insect responses to elevated CO2 and genetic interactions between insects and their host plants may exist and provide the necessary raw material for adaptation. 2. We used clonal lines of Rhopalosiphum padi (L.) aphids to examine genotype-specific responses to elevated CO2. We used the host plant Schedonorus arundinaceus (tall fescue; Schreb), which is capable of asexual reproduction, to investigate host plant genotype-specific effects and possible host plant-by-insect genotype interactions. The abundance and density of three R. padi genotypes on three tall fescue genotypes under three concentrations of CO2 (ambient, 700, and 1000 ppm) in a controlled greenhouse environment were examined. 3. Aphid abundance decreased in the 700 ppm CO2 concentration, but increased in the 1000 ppm concentration relative to ambient. The effect of CO2 on aphid density was dependent on host plant genotype; the density of aphids in high CO2 decreased for two plant genotypes but was unchanged in one. No interaction between aphid genotype and elevated CO2 was found, nor did we find significant genotype-by-genotype interactions. 4. This study suggests that the density of R. padi aphids feeding on tall fescue may decrease under elevated CO2 for some plant genotypes. The likely impact of genotype-specific responses on future changes in the genetic structure of plant and insect populations is discussed. [ABSTRACT FROM AUTHOR]

1. Elevated CO2 can alter plant physiology and morphology, and these changes are expected to impact diet quality for insect herbivores. While the plastic responses of insect herbivores have been well studied, less is known about the propensity of insects to adapt to such changes. Genetic variation in insect responses to elevated CO2 and genetic interactions between insects and their host plants may exist and provide the necessary raw material for adaptation. 2. We used clonal lines of Rhopalosiphum padi (L.) aphids to examine genotype-specific responses to elevated CO2. We used the host plant Schedonorus arundinaceus (tall fescue; Schreb), which is capable of asexual reproduction, to investigate host plant genotype-specific effects and possible host plant-by-insect genotype interactions. The abundance and density of three R. padi genotypes on three tall fescue genotypes under three concentrations of CO2 (ambient, 700, and 1000 ppm) in a controlled greenhouse environment were examined. 3. Aphid abundance decreased in the 700 ppm CO2 concentration, but increased in the 1000 ppm concentration relative to ambient. The effect of CO2 on aphid density was dependent on host plant genotype; the density of aphids in high CO2 decreased for two plant genotypes but was unchanged in one. No interaction between aphid genotype and elevated CO2 was found, nor did we find significant genotype-by-genotype interactions. 4. This study suggests that the density of R. padi aphids feeding on tall fescue may decrease under elevated CO2 for some plant genotypes. The likely impact of genotype-specific responses on future changes in the genetic structure of plant and insect populations is discussed. [ABSTRACT FROM AUTHOR]

Atmospheric CO2 is expected to increase to between 550 ppm and 1000 ppm in the next century. CO2-induced changes in plant physiology can have ecosystem-wide implications and may alter plant-plant, plant-herbivore and plant-symbiont interactions. We examined the effects of three concentrations of CO2 (390, 800 and 1000 ppm) and two concentrations of nitrogen fertilizer (0.004 g N/week versus 0.2 g N/week) on the physiological response of Neotyphodium fungal endophyte-infected and uninfected tall fescue plants. We used quantitative PCR to estimate the concentration of endophyte under altered CO2 and N conditions. We found that elevated CO2 increased the concentration of water-soluble carbohydrates and decreased the concentration of plant total amino acids in plants. Fungal-derived alkaloids decreased in response to elevated CO2 and increased in response to nitrogen fertilization. Endophyte concentration (expressed as the number of copies of an endophyte-specific gene per total genomic DNA) increased under elevated CO2 and nitrogen fertilization. The correlation between endophyte concentration and alkaloid production observed at ambient conditions was not observed under elevated CO2. These results suggest that nutrient exchange dynamics important for maintaining the symbiotic relationship between fungal endophytes and their grass hosts may be altered by changes in environmental variables such as CO2 and nitrogen fertilization. [ABSTRACT FROM AUTHOR]

Purpose – Recent reports argue that eco-innovation is the key to realising growth. The purpose of this paper is to examine the factors which drive eco-innovation and test if eco-innovating firms perform better than non-eco-innovating firms. The paper provides insights into the role government regulation can play in directing and stimulating eco-innovation. Design/methodology/approach – The approach utilised by this paper is empirical in nature. Using a sample of 2,181 firms, gathered as part of the Irish Community Survey 2006-2008, the authors estimate a modified innovation production function in order to assess the impact of regulation, consumer expectations and voluntary agreements on the performance of eco-innovation, subsequently a knowledge augmented production function is estimated to assess the impact of eco-innovation on firm performance. Findings – The findings suggest that regulation and customer perception can explain a firm's decision to engage in eco-innovation. Eco-innovation is also found to be more important than non-eco-innovation in determining firm performance. Research limitations/implications – Due to the limited availability of accounting data this paper uses turnover per worker as the measure of firm performance. As a result, it is not possible to assess the impact of eco-innovation on firm costs. Social implications – The finding that regulation drives eco-innovation, and that there is no trade-off between eco-innovation and higher profit margins for innovating firms, suggests that regulators and policy makers can stimulate growth and create a greener society. Originality/value – This paper provides an empirical analysis of the Porter and van der Linde's theory of environmental regulation and firm performance using novel real world data from over 2,000 Irish businesses. [ABSTRACT FROM AUTHOR]

Contents [ABSTRACT FROM AUTHOR]

The ability to predict business cycle activity is an invaluable skill for governments and policy makers alike, especially before an economy enters a downturn. We analyse causality relationships between key leading economic indicators and economic growth for three countries from 1970 to 2010. We find that while many indicators do not help explain current movements in GDP growth, lags of these indicators do. In addition, the direction of the change and the size of the change in the lagged economic indicators are very important in many cases. This is particularly true for housing indicators. [ABSTRACT FROM AUTHOR]

A major issue in financial economics is the behaviour of stock returns over long as opposed to short horizons. This paper looks at the relationship between continuously compounded nominal returns and inflation over both short and long horizons. Using over two centuries of annual data for Ireland, this paper finds support for the Generalized Fisher Hypothesis; namely that real stock returns are independent of expected inflation over the long run, and a positive relationship between ex post long-horizon nominal stock returns and inflation. [ABSTRACT FROM AUTHOR]

Drosophila suzukii is a relatively new threat to the soft-skinned fruit industry in North America. The presence of this pest in North America is a concern and assessing the risk of potential infestation and damage can help guide regional management strategies. We have developed a continuous time stage structured population model parameterized with empirical data based on laboratory observations. The principle environmental driver of vital rates (mortality, fecundity and development) for the model is temperature though our results suggest that reproductive diapause and quality of fruit available to the population may also have significant effect on population size. The model was run with several generalized temperature profiles and various observed temperature data sets for locations known to be important for berry production. While southern regions appear to be most suitable for supporting high population densities due to warm temperatures throughout the year, northern regions with moderate temperatures may also be susceptible due to a lack of extreme cold or heat, both of which limit development and increase mortality. [ABSTRACT FROM AUTHOR]

Since late 2019, COVID-19 has devastated the global economy, with indirect implications for the environment. As governments' prioritized health and implemented measures such as the closure of non-essential businesses and social distancing, many workers have lost their jobs, been furloughed, or started working from home. Consequently, the world of work has drastically transformed and this period is likely to have major implications for mobility, transportation and the environment. This paper estimates the potential for people to engage in remote work and social distancing using O*NET data and Irish Census data and calculates the potential emission savings, by commuter type from a switch to remote working and occupational social distancing. The results show that while those who commute by car have a relatively high potential for remote work, they are less likely to be able to engage in social distancing in their workplace. While this may be negative for employment prospects in the short run, our analysis indicates that this pattern has the potential for positive environmental implications in the short and long run. [ABSTRACT FROM AUTHOR]

Summary: Lolium perenne cultivars with elevated levels of fructans in leaf blades (high sugar-content grasses) have been developed to improve animal nutrition and reduce adverse environmental impacts of pastoral agricultural systems. Expression of the high sugar trait can vary substantially depending on genotype×environment (G×E) interactions. We grew three potential high sugar-content and a control cultivar in three temperature regimes and quantified water soluble carbohydrates (WSCs) and the expression of all functionally characterised L. perenne fructan pathway genes in leaf tissues. We also analysed the distribution, expression and sequence variation of two specific isoforms of Lp6G-FFT (fructan: fructan 6G-fructosyltransferase). Our study confirmed a significant G×E interaction affecting the accumulation of fructans in the high sugar-content cultivar AberDart, which accumulated higher levels of high DP (degree of polymerisation) fructans in blades compared to the control cultivar only when grown at 20°C (day)/10°C (night) temperatures. The cultivar Expo on the other hand accumulated significantly higher levels of high DP fructans in blades independent of temperature. Fructan levels in pseudostems were higher than in blades, and they increased markedly with decreasing temperature, but there was no consistent effect of cultivar in this tissue. The expression of the high sugar trait was generally positively correlated with transcript levels of fructosyltransferases. Presence and expression of only one of the two known 6G-FFT isoforms was positively correlated with high fructan biosynthesis, while the second isoform was associated with low fructan concentrations and positively correlated with fructan exohydrolase gene expression. The presence of distinct 6G-FFT sequence variants appears to be associated with the capacity of high sugar-content grasses to accumulate higher fructan levels particularly at warmer temperatures. These findings might be exploited for the selection and breeding of ‘warm-effective’ high sugar-content grasses to overcome some of the limitations of current high sugar-content ryegrass cultivars. [ABSTRACT FROM AUTHOR]