Ecological Connectivity Research in Urban Areas

1. The successful movement of individuals is fundamental to life. Facilitating these movements by promoting ecological connectivity has become a central theme in ecology and conservation. Urban areas contain more than half of the world's human population, and their potential to support biodiversity and to connect their citizens to nature is increasingly recognized. Promoting ecological connectivity within these areas is essential to reaching this potential. However, our current understanding of ecological connectivity within urban areas appears limited. 2. We reviewed the published scientific literature to assess the state-of-the-art of ecological connectivity research in urban areas, summarized trends in study attributes and highlighted knowledge gaps. 3. We found 174 papers that investigated ecological connectivity within urban areas. These papers addressed either structural (48) or functional connectivity (111), and some addressed both (15), but contained substantial geographic and taxonomic biases. These papers rarely defined the aspect of connectivity they were investigating and objective descriptions of the local urban context were uncommon. Formulated hypotheses or a priori predictions were typically unstated and many papers used suboptimal study designs and methods. 4. We suggest future studies explicitly consider and quantify the landscape within their analyses and make greater use of available and rapidly developing tools and methods for measuring functional connectivity (e.g. biotelemetry or landscape genetics). We also highlight the need for studies to clearly define how the terms 'urban' and 'connectivity' have been applied. 5. Knowledge gaps in ecological connectivity in urban areas remain, partly because the field is still in its infancy and partly because we must better capitalize on the state-of-the-art technological and analytical techniques that are increasingly available. Well-designed studies that employed high-resolution data and powerful analytical techniques highlight our abilities to quantify ecological connectivity in urban areas. These studies are exemplary, setting the standards for future research to facilitate data-driven and evidence-based biodiversity-friendly infrastructure planning in urban areas

Determinants of health care seeking for childhood illnesses in Nairobi slums

The practice of appropriate health seeking has a great potential to reduce the occurrence of severe and life-threatening child illnesses. We assessed the influence of socio-demographic, economic and disease-related factors in health care seeking for child illnesses among slum dwellers of Nairobi, Kenya. A survey round of the Nairobi Urban Demographic Surveillance System (NUDSS) generated information on 2-week child morbidity, illness symptoms, perceived illness severity and use of modern health services. During this round of data collection, interviewers visited a total of 15 174 households, where 3015 children younger than 5 years lived. Of the 999 (33.1%) children who were reported to have been sick, medical care of some sort was sought for 604 (60.5%). Lack of finances (49.6%) and a perception that the illness was not serious (28.1%) were the main reasons given for failure to seek health care outside the home. Health care seeking was most common for sick children in the youngest age group (0–11 months). Caretakers sought medical care more frequently for diarrhoea symptoms than for coughing and even more so when the diarrhoea was associated with fever. Perception of illness severity was strongly associated with health care seeking. Household income was significantly associated with health care seeking up to certain threshold levels, above which its effects stabilized. Improving caretaker skills to recognize danger signs in child illnesses may enhance health-seeking behaviour. Integrated Management of Child Illnesses (IMCI) programmes must be accessible free of charge to the urban poor in order to increase health care seeking and bring about improvements in child survival.<br/