Is the meiofauna a good indicator for climate change and anthropogenic impacts?

Our planet is changing, and one of the most pressing challenges facing the scientific community revolves around understanding how ecological communities respond to global changes. From coastal to deep-sea ecosystems, ecologists are exploring new areas of research to find model organisms that help predict the future of life on our planet. Among the different categories of organisms, meiofauna offer several advantages for the study of marine benthic ecosystems. This paper reviews the advances in the study of meiofauna with regard to climate change and anthropogenic impacts. Four taxonomic groups are valuable for predicting global changes: foraminifers (especially calcareous forms), nematodes, copepods and ostracods. Environmental variables are fundamental in the interpretation of meiofaunal patterns and multistressor experiments are more informative than single stressor ones, revealing complex ecological and biological interactions. Global change has a general negative effect on meiofauna, with important consequences on benthic food webs. However, some meiofaunal species can be favoured by the extreme conditions induced by global change, as they can exhibit remarkable physiological adaptations. This review highlights the need to incorporate studies on taxonomy, genetics and function of meiofaunal taxa into global change impact research

Climate Change, Coral Reef Ecosystems, and Management Options for Marine Protected Areas

Marine protected areas (MPAs) provide place-based management of marine ecosystems through various degrees and types of protective actions. Habitats such as coral reefs are especially susceptible to degradation resulting from climate change, as evidenced by mass bleaching events over the past two decades. Marine ecosystems are being altered by direct effects of climate change including ocean warming, ocean acidification, rising sea level, changing circulation patterns, increasing severity of storms, and changing freshwater influxes. As impacts of climate change strengthen they may exacerbate effects of existing stressors and require new or modified management approaches; MPA networks are generally accepted as an improvement over individual MPAs to address multiple threats to the marine environment. While MPA networks are considered a potentially effective management approach for conserving marine biodiversity, they should be established in conjunction with other management strategies, such as fisheries regulations and reductions of nutrients and other forms of land-based pollution. Information about interactions between climate change and more “traditional” stressors is limited. MPA managers are faced with high levels of uncertainty about likely outcomes of management actions because climate change impacts have strong interactions with existing stressors, such as land-based sources of pollution, overfishing and destructive fishing practices, invasive species, and diseases. Management options include ameliorating existing stressors, protecting potentially resilient areas, developing networks of MPAs, and integrating climate change into MPA planning, management, and evaluation

A research model to investigate the organizational impact of an ESOP

The rapid increase in the number of employee stock ownership plans (ESOPs) being sponsored by American firms could have an impact on the rate of the nation\u27s productivity growth. The majority of prior ESOP-related studies have focused on the examination of potential relationships between the presence of an ESOP and changes in the levels of employee productivity and firm profitability. The results of these studies have produced mixed results and, as a result, debate continues over the desirability and impact of ESOPs. Few studies have attempted to identify the variables that are associated with employee satisfaction with an ESOP and whether or not employee satisfaction with an ESOP ultimately has an impact on employee productivity and firm profitability. In order to maximize the productivity gains that may be associated with the adoption of an ESOP, researchers must identify the relationships and variables that are most likely to affect employee attitudes toward ESOPs. © 2003, MCB UP Limite

Demographic and attitudinal correlates of employee satisfaction with an ESOP

A firms adoption of an employee stock ownership plan (ESOP) has been hypothesized to increase employee productivity. Resulting employee productivity is hypothesized to improve firm profitability and thus ultimately improve stock performance. Most studies to date have tested potential relationships between the mere presence of an ESOP and changes in employee productivity and firm profitability. Few studies have attempted to identify the variables that are associated with employee satisfaction with an ESOP. In order to maximize the productivity gains associated with the adoption of an ESOP, researchers must first identify the relationships and variables most likely to positively affect employee attitudes and subsequently their satisfaction toward an ESOP. The purpose of this paper is to identify the demographic and attitudinal correlates of employee satisfaction with an ESOP. This exploration will provide a more substantive foundation for future research efforts in the area. Correlation and regression results indicated that employees perceived influence on decision-making, perceived pay equity and perceived influence on stock performance, when examined separately, were each significant correlates of ESOP satisfaction. When combined with the modelled employee demographics in a step-wise regression model, only employees perceived influence on stock performance, perceived influence on decision-making and age explained a statistically significant amount of variance in ESOP satisfaction