Sustainable yield in theory and practice: bridging scientific and mainstream vernacular.

Groundwater is a vital resource in California, and the concept of "sustainable yield" is an attempt to determine a metric that can ensure the long-term resilience of groundwater systems. However, its meaning is ambiguous and quantification is challenging. To provide insight into developing a working definition that encompasses the inherent uncertainty and complexity of the term, this paper examines how sustainable yield in groundwater is interpreted by (1) scientists, (2) the courts in groundwater adjudications, (3) state agencies, and (4) local water practitioners. Through qualitative interviews, this paper identifies problems that local water agencies in the state encounter in engaging with sustainable yield as they incorporate the term in groundwater management practices. The authors recommend that any definitions make explicit the human dimensions of, and assumptions embedded in, the use of these terms in groundwater management practices, and they point to the value of participation in this process.

Children's asthma experience and the importance of place.

Asthma is increasing dramatically among poor, inner-city children. Fourteen children with, and twelve without, asthma were interviewed and observed to examine how children with asthma understand their illness and how the asthma experience shapes their sense of place. Quantitative data showed no difference in objective preferences for particular places, but qualitative analysis showed important differences. We identified eight place-related themes, and on seven there were clear differences between children with and without asthma--offering freedom, being aesthetically pleasing, being comfortable, nature of social contact, being isolating, being familiar and being safe. Children experienced asthma as an interruption in daily life that influences time spent outside, being active and being with friends. Children with asthma are more sensitive to places that are 'dirty' or contain asthma triggers, are less likely to explore new or people-free places and emphasize family interactions, while children without asthma emphasize friendships and are sensitive to neighborhood violence.