Effects of branching spatial structure and life history on the asymptotic growth rate of a population

Author Posting. © The Author(s), 2009. This is the author's version of the work. It is posted here by permission of Springer for personal use, not for redistribution. The definitive version was published in Theoretical Ecology 3 (2010): 137-152, doi:10.1007/s12080-009-0058-0.The dendritic structure of a river network creates directional dispersal and a hierarchical arrangement of habitats. These two features have important consequences for the ecological dynamics of species living within the network.We apply matrix population models to a stage-structured population in a network of habitat patches connected in a dendritic arrangement. By considering a range of life histories and dispersal patterns, both constant in time and seasonal, we illustrate how spatial structure, directional dispersal, survival, and reproduction interact to determine population growth rate and distribution. We investigate the sensitivity of the asymptotic growth rate to the demographic parameters of the model, the system size, and the connections between the patches. Although some general patterns emerge, we find that a species’ mode of reproduction and dispersal are quite important in its response to changes in its life history parameters or in the spatial structure. The framework we use here can be customized to incorporate a wide range of demographic and dispersal scenarios.Funding for this work came from the James S. McDonnell Foundation (EEG, HJL, WFF). MGN was supported by grants from the National Science Foundation (CMG-0530830, OCE-0326734, ATM-0428122)

The impact of corporate social responsibility disclosure on financial performance : evidence from the GCC Islamic banking sector.

This paper examines the relationship between corporate social responsibility (CSR) and financial performance for Islamic banks in the Gulf Cooperation Council (GCC) region over the period 2000–2014 by generating CSR-related data through disclosure analysis of the annual reports of the sampled banks. The findings of this study indicate that there is a significant positive relationship between CSR disclosure and the financial performance of Islamic banks in the GCC countries. The results also show a positive relationship between CSR disclosure and the future financial performance of GCC Islamic banks, potentially indicating that current CSR activities carried out by Islamic banks in the GCC could have a long-term impact on their financial performance. Furthermore, despite demonstrating a significant positive relationship between the composite measure of the CSR disclosure index and financial performance, the findings show no statistically significant relationship between the individual dimensions of the CSR disclosure index and the current financial performance measure except for ‘mission and vision’ and ‘products and services’. Similarly, the empirical results detect a positive significant association only between ‘mission and vision’ dimension and future financial performance of the examined banks

FDI by firms from newly industrialized economies in emerging markets: corporate governance, entry mode and location.

Previous studies emphasise that the foreign direct investment (FDI) strategies of firms from newly industrialised economies (NIEs) are different from the FDI strategies of firms from developed economies. It has also been shown that NIE firms are often controlled by founding families who make key strategic decisions, and that they rely heavily on network linkages when developing their FDI strategies. What is less clear, however, is how the corporate governance factors in NIEs, the risk preferences of the main shareholder constituencies, and the network-based business culture affect the decision to undertake FDI in emerging markets. This paper explores the entry mode and location choices of firms from an Asian NIE (Taiwan) in an emerging market (the People's Republic of China). It shows that the choice of equity stake in an affiliate depends upon the extent of family and institutional share ownerships in the parent company. High-commitment entry is found to be positively associated with the affiliate being located in areas with strong economic, cultural and historic links with the parent company. Furthermore, the entry mode and location decisions appear to be interrelated, with the parent's equity stake in the affiliate depending inter alia upon the location within China, and the favoured location depending inter alia upon the equity stak