Abstract -- Recent interest in the availability of deep groundwater resources along the structurally complicated transition between the Colorado Plateau and the Rio Grande rift in north-central New Mexico, resulted in the development of groundwater-flow models that suggested an impact on the Middle Rio Grande Basin (MRGB, also known as the Albuquerque Basin) from long-term pumping of wells that would exploit pre-Cenozoic aquifer units (Melis, 2009). Refinement of the regional conceptual geologic framework of the Colorado Plateau-MRGB transition was done in order to aid in the development of a revised groundwater-flow model of this region by Melis et al. (2011). The refined geologic framework was based on a compilation of previous stratigraphic work, an examination of data from 72 deep wells, and modifications to structure-contour maps of the base of the Upper Cretaceous Dakota Formation (Thaden and Zech, 1984) and the top of Proterozoic basement (Broadhead et al., 2009). The internal structure of the MRGB is dominated by subbasins and buried structural culminations that likely influence flows of deep groundwater. Structural control on the distribution of springs along the western flank of the MRGB is suggested by variations in basin-margin structure and stratal dips. Few springs are found along the highly faulted Laguna bench, whereas springs are common along the faulted eastern front of the Lucero uplift, where strata dip away from the MRGB boundary. Groundwater-flow across faults was examined by projecting juxtaposition seals and conduits across three fault zones that locally define the northwestern structural margin of the MRGB. A preliminary result of the fault juxtaposition analyses suggest discontinuous and discrete windows of groundwater flow along portions of basin-margin faults.

Ecklonia radiata is one of the most widespread kelps globally, dominating temperate reefs throughout much of Australasia and southeastern Africa. Throughout much of its range, it is the only laminarian kelp and hence plays a key role in facilitating biodiversity and driving food webs, and it underpins immense ecological and socioeconomic values. This review synthesises the growing literature on E. radiata from its phylogeny and distribution through to its biology, ecology and recent changes. It provides an assessment of the state of knowledge and identifies gaps in our understanding of this important species. Despite being tolerant of a wide range of abiotic conditions, recent environmental change has caused direct and indirect loss of E. radiata forests, with extensive areas transitioning to turf and urchin barrens. Ongoing climate change may require application of multifaceted and novel strategies to increase its resistance and resilience to future conditions. By integrating variation across space, time and environmental change, this review provides a description of the current status and possible future trajectories of E. radiata forests.