Search

The California Spotted Owl (Strix occidentalis occidentalis ) is under consideration for federal protection and has stimulated ecosystem-level management efforts in Sierra Nevada national forests. Because some populations are declining, we used a noninvasive fecal sampling method to estimate stress hormone (i.e., corticosterone) levels within a local population from April to August 2001. Fecal corticosterone levels were similar to those recorded in a previous study of Northern Spotted Owls (S.o. caurina ) ( &xmacr;= 80.1 ng/g dry feces, SE = 75.8). We then used an information-theoretic approach to identify factors that influence fecal corticosterone levels in Spotted Owls. Our best overall model indicated that nonbreeding owls had higher fecal corticosterone levels than breeding owls early in the breeding season and lower levels later in the breeding season. We collected few samples from breeding owls early in the breeding season, however, which may have influenced the results. Management-related factors reflecting habitat condition and proximity to roads were not correlated with fecal corticosterone. However, factors such as field storage method and sample mass were correlated with the amount of measured fecal corticosterone and should be considered in future studies. Sample vials initially stored on ice had higher levels than those stored immediately in liquid N2 (βstorage= 0.269 ln[ng/g], 95% CI = 0.026, 0.512). Hormone metabolites were extracted from extremely small samples (0.01 g) by slightly modifying the assay protocol, but the amount of corticosterone detected increased as the sample mass decreased (βmass=−6.248 ln[ng/g], 95% CI =−8.877, −3.620). Corticosterone levels were significantly higher in 10 cecal samples collected simultaneously with fecal samples (paired difference = 74.7 ng/g, SE = 45.0, p = 0.001 for a paired t test), so care must be taken to avoid contaminating fecal samples with cecal material. Most of the variation was unexplained by our best model ( R 2= 0.24), and additional factors influencing fecal corticosterone levels need to be identified. Therefore, we recommend that well-designed experiments be conducted under controlled conditions to better determine the effect of factors such as sample handling, partial sampling, and diet on fecal corticosterone levels in owls and other birds. [ABSTRACT FROM AUTHOR]

Introduction Collabo RATE is a brief patient survey focused on shared decision making. This paper aims to (i) provide insight on facilitators and challenges to implementing a real-time patient survey and (ii) evaluate Collabo RATE scores and response rates across multiple clinical settings with varied patient populations. Method All adult patients at three United States primary care practices were eligible to complete Collabo RATE post-visit. To inform key learnings, we aggregated all mentions of unanticipated decisions, problems and administration errors from field notes and email communications. Mixed-effects logistic regression evaluated the impact of site, clinician, patient age and patient gender on the Collabo RATE score. Results While Collabo RATE score increased only slightly with increasing patient age ( OR 1.018, 95% CI 1.014-1.021), female patient gender was associated with significantly higher Collabo RATE scores ( OR 1.224, 95% CI 1.073-1.397). Clinician also predicts Collabo RATE score (random effect variance 0.146). Site-specific factors such as clinical workflow and checkout procedures play a key role in successful in-clinic implementation and are significantly related to Collabo RATE scores, with Site 3 scoring significantly higher than Site 1 ( OR 1.759, 95% CI 1.216 to 2.545) or Site 2 (z=−2.71, 95% CI −1.114 to −0.178). Discussion This study demonstrates that Collabo RATE can be used in diverse primary care settings. A clinic's workflow plays a crucial role in implementation. Patient experience measurement risks becoming a burden to both patients and administrators. Episodic use of short measurement tools could reduce this burden. [ABSTRACT FROM AUTHOR]

This paper explores the ways in which economic globalization processes produce new spatio-temporalities. It emphasizes how the exercise of different modes of power, in particular instrumental and associational powers, is critical to understanding the distinct formations that are produced by globalization dynamics. Using the empirical context of globalization in the wine industry, and the efforts made by one of the industry's leading wine corporations, Robert Mondavi of Napa valley California, to extend its production base to one of Europe's foremost wine-producing regions, the paper provides a crucial interpretative angle on spatio-temporal disruptions caused by globalization processes. [ABSTRACT FROM AUTHOR]

This article discusses, in brief, about some of the papers presented at the 2001 annual meeting of the American Political Science Association, held in San Francisco, California. All these papers have a common theme to bring legislative affairs into the limelight. The paper "A Tools of the Trade' Look at the Comparing Congress with State Legislatures" offers a primer on comparing and contrasting U.S. Congress with the American state legislatures. The paper "Senate Apprenticeship in Historical Perspective" addresses the conventional wisdom among U.S. senators.

In this paper we examine the effects of different components of corporate culture on two different categories of action in both routine and jolted environments. Data were collected on a heterogeneous sample of 54 corporations in the San Francisco Bay Area. We examined how the values, knowledge, and practices dimensions of corporate culture influenced actions to prepare for responding to future earthquake disasters and actions to mitigate or reduce future physical and associated earthquake losses. The findings show that corporate earthquake culture is a multidimensional concept, that varied elements of culture function to impact corporate action differently is distinct organizational environments, and that culture's impact on organizational action is contingent on the type of action being considered. [ABSTRACT FROM AUTHOR]

Objective. This paper analyzes the extent to which voter behavior in city formation elections supports Tiebout's (1956) hypothesis that residential sorting facilitates efficiency of local service provision. It develops a two-stage model of city formation to distinguish agenda setting from voter outcomes on city formation proposals. Methods. Logit analysis is used to analyze voting in 71 city formation elections, incorporating Heckman's two-stage procedure to correct for self-selection of local referenda. Results. Community fiscal and demographic factors influence agenda setting more than voting behavior. Wealthier communities in high-growth counties are more likely to propose formation of a city. In contrast, community characteristics have little influence on electoral outcomes, suggesting that boundedly rational voters rely on information heuristics. Conclusions. Although reduction of diversity did not appear to motivate city formation, sorting around residential income, land use preferences, and other demographic variables may facilitate relative efficiency of service provision. [ABSTRACT FROM AUTHOR]

1 Smoke-stimulated germination in the post-fire flora of California chaparral does not appear to be triggered by nitrate. Application of freshly prepared unbuffered KNO3 solutions (pH c. 6.2) failed to enhance germination of five populations of Emmenanthe penduliflora or one Phacelia grandiflora population, regardless of light or stratification conditions. 2 KNO3 buffered at acidic pH (or unbuffered solutions equilibrated with atmospheric CO2) did induce germination, but KNO3 solutions at pH 7 failed to induce germination. Induction of germination is therefore not due to the nitrate ion per se, but rather to high [H+], although buffered controls gave weak germination at low pH, suggesting a role for H+ plus nitrate. However, other anions such as sulphate were equally as effective as nitrate at breaking dormancy. 3 The germination response to KNO3 was affected by the type of filter paper used and this may be linked to differences in pH. 4 NO2, at concentrations present in biomass smoke, was highly effective at inducing germination, and other oxidizing agents also induced germination. 5 Several growth regulators, including nitrite and gibberellin, were stimulatory only at acidic pH, but KCN was stimulatory across a broad pH range. 6 Germination decreased at smoke exposures longer than a few minutes. Also, smoked water samples effective at breaking dormancy were acidic and were less effective when buffered to pH >7. 7 Physical scarification of the seed coat induced germination but the effect was not due to penetration of a water barrier, or to enhanced oxygen uptake or to wound responses such as CO2 or ethylene production. 8 Different effects of the gibberellin inhibitor CCC (chlorocholine chloride) suggested that the mechanisms of scarification-induced and smoke-induced germination may differ. 9 We conclude that either oxidizing gases in smoke and/or acids generated on burnt sites play a role in germination of post-fire annuals in chaparral. [ABSTRACT FROM AUTHOR]

The California grassland is dominated by alien plant species. It is generally assumed that the invasion of aliens began with the initial introduction of livestock by Spanish missionaries in 1769. In this paper we present pollen evidence which indicates that Erodium cicutarium, a Mediterranean annual, was well established in the Santa Barbara region several years before the founding of the first California mission at San Diego in 1769. Historical evidence shows that it took the Spanish nearly a decade to develop a livestock base in California. Disturbance by livestock was therefore not a necessary prerequisite for invasion by alien plants. Historical and macrofossil evidence indicates that E. cicutarium invaded California from Baja California. [ABSTRACT FROM AUTHOR]

The consumption of natural resources is rapidly emerging as a major social problem, and social efforts to control this consumption are guided in part by research that tries to specify the meaning of resources to consumers. This paper compares a sociological perspective with the more widespread economic model of consumption, using data from study of billing systems, sociocultural status, and household energy use in a California apartment complex. The research suggests that the role of marginal price in ordering consumption can be interpreted as a contingent feature of the socially structured relationship between consumption and social status. It also suggests that the utility of a technology is a secondary and emergent product of its use, a fact obscured by the conventional analytic separation of supply and demand or meansand ends. [ABSTRACT FROM AUTHOR]

Provides information on a conference on the restoration of coastal ecosystem of Santa Catarina Island in Brazil. Exotic plants found in Santa Catarina; Details on the papers presented in the workshop; Outcomes of the workshop.

Profiles James M. Gere, Professor Emeritus of Civil Engineering at Stanford University in California. Educational background; Technical papers written by Gere; College textbooks authored by Gere.