Native bee populations are critical sources of pollination. Unfortunately, native bees are declining in abundance and diversity. Much of this decline comes from human land-use change. While the effects of large-scale agriculture on native bees are relatively well understood, the effects of urban development are less clear. Understanding urbanity's effect on native bees requires consideration of...

This paper studies the effect of terrorist attacks on the internal structure of cities. We develop an urban framework with capital structures suitable for the study of this question and analyze the long and short term implications of this type of events. In the long run, the analysis shows that a terrorist attack will affect urban structure only modestly, relative to the potentially large decre...

This paper examines the rapid urban growth in the city of Shenzhen with particular focus on urban economic growth, population growth, agriculture and environmental changes. With the rapid expansion of population and the builtup area, there is increasing demand for the provision of urban infrastructure. The volume of environmental pollution is also increasing. The problems of environmental pollu...

Pacific madrone (Arbutus menziesii) is in decline in urban areas of the Pacific Northwest. Maintaining significant populations of this species requires development of restoration techniques for urban environments. My research consists of investigating the effects of light, irrigation and native soil on the establishment of Pacific madrone. I transplanted 104 one year madrone seedlings into an u...

Using a process-based Dynamic Land Ecosystem Model, we assessed carbon dynamics of urbanized/developed lands in the Southern United States during 1945-2007. The results indicated that approximately 1.72 (1.69-1.77) Pg (1P = 10(15)) carbon was stored in urban/developed lands, comparable to the storage of shrubland or cropland in the region. Urbanization resulted in a release of 0.21 Pg carbon to...

India experienced several years of fast economic growth during the 1990s, and according to many observers this period also saw a considerable decline in poverty, especially in urban areas. We use data from two rounds of the National Family and Health Survey to evaluate changes in nutritional status between 1992-93 and 1998-1999 among children ages 0-3. We find that measures of short-term nutrit...

There are many ways of moving through a city. Cycling is one which has received considerable attention from urban scholars. Yet it has remained largely neglected within the burgeoning literature on the post-socialist urbanisms of Central and Eastern Europe. This paper uses a case study from Sofia, Bulgaria to address this gap in urban research. By exploring the practices and affordances of cycl...

OBJECTIVE To test the hypothesis that hospitalization in old age is associated with subsequent cognitive decline. METHODS As part of a longitudinal population-based cohort study, 1,870 older residents of an urban community were interviewed at 3-year intervals for up to 12 years. The interview included a set of brief cognitive tests from which measures of global cognition, episodic memory, and...

Background: It remains unclear whether the natural course of human immunodeficiency virus (HIV) differs in subjects infected through injecting drug use (IDU) and no data have been published from lowor middle-income countries. We addressed this question in an urban cohort in Indonesia, which is experiencing a rapidly growing HIV epidemic strongly driven by IDU. Methods: All antiretroviral treatm...

The rapid decline of fertility, from over 6.5 births per woman to 3.3 births, in the last two decades in Bangladesh is, indeed, a historic record in demographic transition. The country is poor and has remained traditional and conservative. Although the extent and rapidity of the decrease in fertility have been very impressive by international standards, continued fertility decline is desirable,...