Stream water temperature (°C) is an important physical variable that influences many biological and abiotic water quality processes. The intermingled mosaic of land-use/land-cover (LULC) types and corresponding variability in stream water temperature (Tw) processes in contemporary mixed-land-use watersheds necessitate research to advance management and policy decisions. Water temperature was analyzed from 21 gauging sites using a nested-scale experimental watershed study design. Results showed that forested land use was negatively correlated (α = 0.05) with mean and maximum Tw. Agricultural land use was significantly positively correlated (α = 0.05) with maximum Tw except during the spring season. Mixed development and Tw were significantly correlated (α = 0.05) at quarterly and monthly timescales. Correlation trends in some reaches were reversed between the winter and summer seasons, contradicting previous research. During the winter season, mixed development showed a negative relationship with minimum Tw and mean Tw. During the summer season, higher minimum, maximum, and mean Tw correlations were observed. Advanced understanding generated through this high-resolution investigation improves land managers’ ability to improve conservation strategies in freshwater aquatic ecosystems of contemporary watersheds.

Barbuda is one of two major islands that comprise the Caribbean nation of Antigua and Barbuda. The island is known for its secluded pink and white sand beaches and, more recently, for Hurricane Irma (September 2017). The category five mega-storm decimated much of the island’s landscape and infrastructure, and the physical damage was widely publicized. Three years after Hurricane Irma, many challenges related to humanitarian aid, fiscal resources, and materials to rebuild remain. There are many natural resource commodity and human social challenges including those related to water resources, agriculture, marine ecosystems, feral animal populations, human health, tourism, and economics. This article includes some of Barbuda’s historical context and identifies a number of current critical challenges and recommendations for activities (approaches) that may advance a number of management practices. For example, the Integrated Watershed Management (IWM) and/or One Health approach(es) include social and fiscal mechanisms to implement programs, policies, legislation, and research in which multiple sectors of Barbuda could communicate and work together to achieve sustainable outcomes. Context is provided to substantiate humanitarian aid, scientific engagement, scientific progress, and political support for a semi-closed cultural socio-ecological island ecosystem at the precipice of change.

A Spatially Distributed Investigation of Stream Water Temperature in a Contemporary Mixed-Land-Use Watershed Jason Horne Stream water temperature is an important physical variable that influences many biological and abiotic water quality processes. The land-use/land-cover (LULC) types and corresponding variability in stream water temperature (Tw) processes in contemporary mixed-land-use watersheds necessitate research to advance management and policy decisions. Water temperature was analyzed from 21 gauging sites using a nested-scale experimental watershed study design. Results showed that forested land use was significantly negatively correlated (α = 0.05) with mean and maximum Tw. Agricultural land use was significantly positively correlated (α = 0.05) with maximum Tw except during the spring season. Mixed development and Tw were significantly correlated (α = 0.05) at quarterly and monthly timescales. Correlation trends in some reaches were reversed between the winter and summer seasons, contradicting previous research. During the winter season, mixed development showed a negative relationship with minimum Tw and mean Tw. During the summer season, higher minimum, maximum, and mean Tw correlations were observed relative to the winter season. Advanced understanding generated through this high-resolution investigation improves land managers' ability to improve conservation strategies in freshwater aquatic ecosystems of contemporary watersheds. iii The undersigned, appointed by the dean of the Graduate School, have examined the thesis entitled A Spatially Distributed Investigation of Stream Water Temperature in a Contemporary Mixed-Land-Use Watershed presented by Jason P. Horne, a candidate for the degree of Master of Science, and hereby certify that, in their opinion, it is worthy of acceptance.