Landscape change induced by population growth and urban development is impacting the ecosystem goods and services provided by open space, which is essential to supporting many urban and rural populations. Conserving open space cannot be attained without obtaining public support especially in a state like Texas where most open space is privately owned. This dissertation was aimed at exploring the role of place identity as an intrinsic incentive for landowner involvement in conserving open space threatened by landscape change. Four objectives addressed in this research include: 1) defining place identity and identifying its underlying dimensions; 2) developing and refining a place-identity scale; 3) developing and testing a conceptual framework to explain the relationships among commitment, place identity, behavior/behavioral intention to manifest place identity, and perception of landscape change; and 4) drawing implications for open space conservation. Identity theory and identity control theory were applied to conceptualize place identity and develope structural models for hypothesis testing. Place identity was defined as comprising meanings that individuals ascribe to a place through their interaction with that place and become defining elements of their self-identity. Both qualitative and quantitative methods were used in this research. Results from semi-structured interviews with a convenience sample of landowners in the Texas Hill Country were used to develop the place-identity scale. Survey data from randomly selected Hill Country landowners were used in confirmatory factor analysis, mean and covariance structure analysis, and invariance testing based on the covariance structure to test and refine measures, to compare differences between landowner groups, and to test hypotheses. Findings suggested that identity theory and identity control theory provided valuable insight to place identity in the face of change. Results also supported a model of place identity comprised of cognitive and affective dimensions, and identified variations among individuals in their affective place-identity. Moreover, findings indicated that both dimensions exhibited different effects on identity-related behavior/behavioral intention under the influence of landscape change. Implications were provided for engaging landowners in open space conservation. This dissertation addresses several research gaps, and also raises questions important in understanding and applying place identity to promoting conservation.

This report examines the cultural and economic growth of the Texas Hill Country resulting from the construction of the Highland Lake chain. It compares the current political and social climate of the region with the historical past, and offers solutions to avert an inevitable collision between a rising population and the constraints of limited water resources. / text

Soil organic matter is important as storage for carbon and nutrients, supporting soil structure, and as a filter for pollutants entering the soil ecosystem. The recovery of soil organic matter in depleted soils can take decades, or even hundreds of years. It has been assumed that in non-eroding pasture, soil carbon levels either increase or not change over time. However, some recent studies have suggested that fertiliser addition to pasture soils may contribute to decreases in soil carbon content. My hypotheses were: 1. As P fertiliser loadings increase the soil carbon content and C:N ratio will decrease. 2. Changes in C pools will be greater in the more active pool (readily available carbon, and microbial biomass carbon) within the soil total carbon The study was undertaken at a long term fertiliser trial, established in 1980, at the Whatawhata Hill Country Research Station west of Hamilton, New Zealand. The fertiliser trial has P fertiliser application rates maintained since 1984. Olsen P, total C, total N, labile carbon, respirable carbon, specific respiration rate, microbial biomass C, microbial quotient, mineralised N, microbial biomass N, microbial N quotient, and mineralised N per microbial biomass nitrogen, C:N ratio, and soil pH were measured on soil samples collected from 12 paddocks with six P fertiliser loading (0, 10, 20, 30, 50, 100 kg P ha-1 yr-1). As expected, the available P (Olsen P) increased significantly (P less than 0.001) with increasing P fertiliser application rate. Total carbon, labile carbon, and total nitrogen all decreased significantly (P less than 0.05) with increasing P fertiliser application. No significant relationships were found between P fertiliser and respirable carbon, microbial carbon, microbial (C) quotient, microbial specific respiration, microbial nitrogen, microbial (N) quotient, mineralised N, or C:N ratio. The first hypothesis was rejected as the C:N ratio did not change with increased P fertiliser application. However, both C and N decreased with increased P fertiliser application. The second hypothesis was, therefore, accepted in part because there was a decrease in labile carbon (readily available carbon) and total carbon, with P fertiliser application, but no relationship was evident for the respirable carbon and microbial biomass.

Trifolium repens, Lotus pedunculatus and Holcus lanatus were oversown on two recent soil slip surfaces at AgResearch’s Ballantrae pastoral hill‐country farm near Woodville. The two slip surfaces were located on (Manamahu steepland soil) sedimentary mudstone. One slip had a north aspect and the other had a south aspect. Both slips were located on a land class 6 with slope 28‐330. The pasture species were oversown during early spring and the percentage seedling emergence and early establishment from viable seeds oversown was analysed at early spring (Day 15), late spring (Day 45), early summer (Day 90), and late summer (Day 120). The slip surfaces showed micro‐climatic extremes in terms of both soil moisture and surface temperatures during the summer period. Significant differences (P < 0.05) were found in soil moisture between north and south facing slip surfaces. Higher soil moisture and lower soil mean temperature were recorded on the south aspect slip surface. Significant differences (P < 0.05) were found between the three pasture species in terms of seedling emergence and early establishment. Significant differences (P < 0.05) were also found with aspect. The south aspect slip surface had a higher percentage of seedling emergence and earlier establishment for all the species. Interaction between species by aspect became significantly different (P < 0.05) at Day 90 and Day 120. The main effects of time and species were also significantly different (P < 0.05) illustrating seedling emergence and establishment as a race against time. Trifolium repens was a more successful pasture specie, than L. pedunculatus and H. lanatus due to its higher consistency on both north and south slip surfaces. Oversowing T. repens during early spring is a viable option for rehabilitation of recent soil slips in Manawatu.