Rebecca Larkin Minor

Rebecca Larkin Minor
The University of Arizona | UA · Biosphere 2

M.S.

About

22
Publications
8,215
Reads
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194
Citations
Additional affiliations
August 2010 - present
The University of Arizona
Position
  • Researcher
August 2007 - December 2010
The University of Arizona
Position
  • Master's Student

Publications

Publications (22)
Article
Full-text available
Current understanding of the dynamic and slow flow paths that support streamflow in mountain headwater catchments is inhibited by the lack of long-term hydrogeochemical data and the frequent use of short residence time age tracers. To address this, the current study combined the traditional mean transit time and the state-of-the-art fraction of you...
Preprint
Full-text available
Current understanding of the dynamic flow paths and subsurface water storages that support streamflow in mountain catchments is inhibited by the lack of long-term hydrologic data and the frequent use of single age tracers that are not applicable to older groundwater reservoirs. To address this, the current study used both multiple metrics and trace...
Article
Full-text available
Hydraulic redistribution is the transport of water from wet to dry soil layers, upward or downward, through plant roots. Often in savanna and woodland ecosystems, deep‐rooted trees, and shallow‐rooted grasses coexist. The degree to which these different species compete for or share soil‐water derived from precipitation or groundwater, as well as ho...
Article
Tracking wood formation in semi-arid regions during the seasonal march of precipitation extremes has two important applications. It can provide 1) insight into the adaptive capacities of trees to drought, and 2) a basis for a richer interpretation of tree-ring data, assisting in a deeper understanding of past and current climate. In the southwester...
Article
Full-text available
Catchment‐scale response functions, such as transit time distribution (TTD) and evapotranspiration time distribution (ETTD), are considered fundamental descriptors of a catchment's hydrologic and ecohydrologic responses to spatially and temporally varying precipitation inputs. Yet, estimating these functions is challenging, especially in headwater...
Article
Full-text available
Anticipating the ability of ecosystems to maintain functional integrity across predicted altered precipitation regimes remains a grand ecohydrological challenge. Overstory trees and understory grasses within semiarid savannas vary in their structure and sensitivity to environmental pressures, underscoring the need to examine the ecohydrological imp...
Article
Full-text available
We used the weighted wavelet method to perform spectral analysis of observed long-term precipitation, streamflow, actual evapotranspiration, and soil water storage at a sub-humid mountain catchment near Tucson, Arizona, USA. Fractal scaling in precipitation and the daily change in soil water storage occurred up to a period of 14 days and correspond...
Article
Full-text available
“Sky islands” are characteristic of sequential mountain-valley terrain where mountains form an island archipelago rising from surrounding valleys of desert “sea”. At high elevations in the Madrean sky islands of the southwestern United States (USA) and Mexico, mixed evergreen conifer forests occur near the latitudinal extent of their distribution....
Article
Full-text available
This study coupled long‐term hydrometric and stable water isotope data to identify links between subsurface water storage and vegetation in a subhumid mountain catchment in Arizona, USA. Specific observations included catchment‐scale hydrologic fluxes and soil water storage, and stable water isotopes from stream water, soil water, groundwater, and...
Article
High elevation mountain catchments are often subject to large climatic and topographic gradients. Therefore, high density hydrogeochemical observations are needed to understand water sources to streamflow and the temporal and spatial behavior of flow paths. These sources and flow paths vary seasonally, which dictates short‐term storage and the flux...
Article
Full-text available
Widespread, high levels of tree mortality, termed forest die-off, associated with drought and rising temperatures, are disrupting forests worldwide. Drought will likely become more frequent with climate change, but even without more frequent drought, higher temperatures can exacerbate tree water stress. The temperature sensitivity of drought-induce...
Article
Full-text available
While photovoltaic (PV) renewable energy production has surged, concerns remain about whether or not PV power plants induce a “heat island” (PVHI) effect, much like the increase in ambient temperatures relative to wildlands generates an Urban Heat Island effect in cities. Transitions to PV plants alter the way that incoming energy is reflected back...
Article
Full-text available
Competition for seeds has a major influence on the evolution of granivores and the plants on which they rely. The complexity of interactions and coevolutionary relationships vary across forest types. The introduction of non-native granivores has considerable potential to alter seed dispersal dynamics. Non-native species are a major cause of endange...
Data
Data used in analyses. (XLSX)
Article
Subalpine mixed-conifer ecosystems are dependent on snowfall, which is expected to decrease under projected climate change. Changes in snowpack are likely to have important consequences for water and carbon cycling in these and downstream ecosystems. Particularly within semi-arid environments, snowpack changes will directly influence localized wate...
Conference Paper
Background/Question/Methods Extensive tree die-off in forested ecosystems has been recently documented around the world in association with drought and warmer temperatures. More frequent drought is projected for the next century, occurring concurrent with increased temperatures, and could cause more die-off, potentially altering biogeochemical an...
Conference Paper
Background/Question/Methods Carbon budget analyses suggest montane ecosystems as a potentially large, but highly uncertain, portion of the North American carbon sink. While eddy covariance measurements of net ecosystem exchange of CO2 provide insight into the carbon-sink potential of montane ecosystems, compartmentalization of ecosystem respirati...
Article
Full-text available
Pocos estudios han documentado el comportamiento de mamíferos pequeños en casos de incendio. Aquí reportamos el uso de un nido por un adulto de ardilla roja del monte Graham (Tamiasciurus hudsonicus grahamensis), una subespecie endémica amenazada de las Montañas Pinaleño en el sudeste de Arizona, después de la caída de un rayo en el árbol donde se...

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