Rethinking the conceptual foundations of habitat fragmentation research

The effects of habitat fragmentation on bird communities in Hyrcanian forests (Case study: Gorgan Township)

Beyond Island Biogeography Theory UNDERSTANDING HABITAT FRAGMENTATION IN THE REAL WORLD

Island Biogeography Theory (IBT; MacArthur and Wilson 1963, 1967) has profoundly infl uenced the study of biogeography, ecol ogy, and even evolution (Janzen 1968, Losos 1996, Heaney 2000), and has also had an enormous impact on conservation biology. The theory has inspired much thinking about the importance of reserve size and connectivity in the maintenance of species diversity, and stimulated...

Valuing Our Future: Cost-benefit Analysis and Sustainability

This paper takes a first step in formulating approaches to cost-benefit analysis consistent with sustainable development. It reviews the foundations of the customary approach to cost-benefit analysis, with emphasis on its discounted utilitarian roots, and proposes alternative foundations which are more satisfactory in two respects: they place more weight on the future, and they incorporate in a...

The Conceptual Framework of Individual and Social Security Provision in Residential Complexes Based on Iranian-Islamic Foundations

Security as one of the basic human needs has a special place in relaxation, comfort and spiritual needs provision. For this reason, security is always of managers, planners, architects and urban designers' interest. Solutions and strategies of security provision have been fundamentally changed following prevailing change of housing architecture patterns from homes to residential complexes and h...

Quantifying Terrestrial Habitat Loss and Fragmentation: A Protocol

Anthropogenic habitat loss and fragmentation have been implicated as among the key drivers of the burgeoning global biodiversity crisis. In response, there is a growing mandate among natural resource managers to evaluate the impacts of proposed management actions on the extent and fragmentation of habitats. Unfortunately, few guidelines exist to help managers understand the many complex issues ...