Assessment of Riparian Ecosystem Structure in Restored Reaches of Ninemile Creek

Like many streams in the northern Rocky Mountains, Ninemile Creek in Western Montana was degraded by placer mining. This type of gold mining leaves a legacy of physical transformation to the stream, characterized by a highly incised and straightened river channel and loss of the floodplain. These changes to the physical structure lead to hydrology characterized by low-flows during much of the year punctuated by large pulses of water during spring snowmelt. This combination renders it an unsuitable habitat for many invertebrates, fish species, and mammals including beaver. Recently, several phases of restoration in the Ninemile Creek watershed led by Trout Unlimited (TU) have reintroduced sinuosity into several reaches of the stream while increasing floodplain interaction with the river channel. To speed recovery of the biotic component of this newly constructed floodplain ecosystem, TU has planted willows and used a native seed mix. Following restoration, TU has also observed beaver moving back into restored reaches and further enhancing ecosystem structure through dam building. To inform TU about the efficacy of their revegetation efforts in the restored areas of Ninemile Creek, we propose a riparian monitoring plan. This plan focuses on monitoring: vegetation composition using line point intercepts; the presence of beaver lodges, dams, and canals; and the accumulation of fine sediments in the floodplain soils. The effort will help TU adaptively manage their current and future restoration activities on the Ninemile Creek and other similar restoration projects

Recent Transits of the Super-Earth Exoplanet GJ 1214b

We report recent ground-based photometry of the transiting super-Earth exoplanet GJ1214b at several wavelengths, including the infrared near 1.25 microns (J-band). We observed a J-band transit with the FLAMINGOS infrared imager and the 2.1-meter telescope on Kitt Peak, and we observed several optical transits using a 0.5-meter telescope on Kitt Peak and the 0.36-meter Universidad de Monterrey Observatory telescope. Our high-precision J-band observations exploit the brightness of the M-dwarf host star at this infrared wavelength as compared to the optical, as well as being significantly less affected by stellar activity and limb darkening. We fit the J-band transit to obtain an independent determination of the planetary and stellar radii. Our radius for the planet (2.61^+0.30_-0.11 Earth radii) is in excellent agreement with the discovery value reported by Charbonneau et al. based on optical data. We demonstrate that the planetary radius is insensitive to degeneracies in the fitting process. We use all of our observations to improve the transit ephemeris, finding P=1.5804043 +/- 0.0000005 days, and T0=2454964.94390 +/- 0.00006 BJD.Comment: Accepted for ApJ Letters, 7 pages, 3 Figures, 2 Table

Recent Transits of the Super-Earth Exoplanet GJ 1214B

We report recent ground-based photometry of the transiting super-Earth exoplanet GJ1214b at several wavelengths, including the infrared near 1.25 microns (J-band). We observed a J-band transit with the FLAMINGOS infrared imager and the 2.1-meter telescope on Kitt Peak, and we observed several optical transits using a 0.5-meter telescope on Kitt Peak and the 0.36-meter Universidad de Monterrey Observatory telescope. Our high-precision J-band observations exploit the brightness of the M-dwarf host star at this infrared wavelength as compared to the optical, as well as being significantly less affected by stellar activity and limb darkening. We fit the J-band transit to obtain an independent determination of the planetary and stellar radii. Our radius for the planet (2.61 +0.30 / -0.11 Earth radii) is in excellent agreement with the discovery value reported by Charbonneau et al. based on optical data. We demonstrate that the planetary radius is insensitive to degeneracies in the fitting process. We use all of our observations to improve the transit ephemeris, finding P=1.5804043 +/- 0.0000005 days, and T0=2454964.94390 +/- 0.00006 BJD

Extrasolar Planet Transits Observed at Kitt Peak National Observatory

We obtained J-, H- and JH-band photometry of known extrasolar planet transiting systems at the 2.1-m Kitt Peak National Observatory Telescope using the FLAMINGOS infrared camera between October 2008 and October 2011. From the derived lightcurves we have extracted the mid-transit times, transit depths and transit durations for these events. The precise mid-transit times obtained help improve the orbital periods and also constrain transit-time variations of the systems. For most cases the published system parameters successfully accounted for our observed lightcurves, but in some instances we derive improved planetary radii and orbital periods. We complemented our 2.1-m infrared observations using CCD z'-band and B-band photometry (plus two Hydrogen Alpha filter observations) obtained with the Kitt Peak Visitor's Center telescope, and with four H-band transits observed in October 2007 with the NSO's 1.6-m McMath-Pierce Solar Telescope. The principal highlights of our results are: 1) our ensemble of J-band planetary radii agree with optical radii, with the best-fit relation being: (Rp/R*)J = 0.0017 + 0.979 (Rp/R*)optical, 2) We observe star spot crossings during the transit of WASP-11/HAT-P-10, 3) we detect star spot crossings by HAT-P-11b (Kepler-3b), thus confirming that the magnetic evolution of the stellar active regions can be monitored even after the Kepler mission has ended, and 4) we confirm a grazing transit for HAT-P-27/WASP-40. In total we present 57 individual transits of 32 known exoplanet systems.Comment: 33 pages, 6 figures, accepted in Publications of the Astronomical Society of the Pacifi

Serving highly vulnerable families in home-visitation programs

Home-visitation programs for families with young children are growing in popularity in the US. These programs typically seek to prevent child abuse and neglect and/or promote optimal development for infants, toddlers, and/or preschool-age children. This paper focuses on improving the capacity of home-visitation programs to meet the complex needs of highly vulnerable families with young children. Poverty, maternal depression and substance abuse, and domestic violence are noted as factors that place young children at risk for poor outcomes. The challenges of providing home-visitation services to families in which these risk factors are present are discussed. Family engagement, matching services to families’ needs, and staff capabilities are highlighted as areas in which improvements can be made to enhance home-visitation programs’ capacity to serve highly vulnerable families. Recommendations are given for improving the effectiveness of home-visitation programs in serving these families, as well for addressing policy and research issues related to the further development and evaluation of these programs.First author draf

The Pace of Recovery of Riparian Ecosystem Structure in Restored Reaches of Ninemile Creek

Like many streams in the northern Rocky Mountains, Ninemile Creek in Western Montana was degraded by placer mining. This type of gold mining leaves a legacy of physical transformation to the stream, characterized by a highly incised and straightened river channel disconnected from the floodplain. These changes to the physical structure cause low streamflow during much of the year which is then punctuated by increased pulses of water during spring snowmelt and even rainfall events. This combination of physical and hydrologic changes render the creek an unsuitable habitat for many invertebrates, fish species, and mammals, including beavers. Recently, restoration in the Ninemile Creek watershed led by Trout Unlimited (TU) has reintroduced sinuosity and increased floodplain interaction with the river channel in three reaches of the stream which were restored in 2014, 2016, and 2018. To expedite recovery of the biotic component of this newly constructed floodplain ecosystem, TU planted willows and used a native seed mix representative of riparian plant assemblages in the region. To evaluate the riparian vegetation recovery, soil characteristics, and beaver presence, a post-restoration monitoring effort was implemented in 2019 across all three restored reaches. Line point intercept (LPI) method was used to assess vegetation growth forms and surface types along transects perpendicular to the stream channel, beginning at the bank. Signs of moose and deer browse were also documented when observed within the transect. Soil samples were collected at a single randomly selected point on each transect and beaver structures were documented and mapped along the restored reaches. These measurements were taken at each restoration site, and at a reference reach which never experienced placer mining. The results show measurable differences in percent cover and distribution of vegetation types, predominant soil characteristics and beaver presence among the reaches. The data gathered will inform TU on how to more effectively restore and adaptively manage their current and future restoration activities on the Ninemile Creek and other similar restoration projects

Vigilance in infectious disease emergencies: Expanding the concept

In their 2010 book, Lorna Weir and Eric Mykhalovskiy conceptualised the role of vigilance in unknown and emerging infectious disease threats. Theirs is a macro-level account which draws on empirical data to describe vigilance as a set of technical and political arrangements that govern collection, analysis, interpretation and communication of data as it pertains to unknown threats. In this paper we expand their work to detail a conceptual analysis of the role of vigilance at the micro-level during periods of high infectious disease threat. Our data are daily press conferences and associated non-discursive tools in New South Wales (NSW), Australia during times of heightened COVID-19 risk. This paper is a conceptual analysis that draws on theories of vigilance and related concepts to show how a key aspect of vigilance is making previously unseen threats visible or present. Communications formulated and encouraged three types of vigilance as a set of governing relations: institutional or authority-based; individual outward-facing; and individual inward-facing. We also describe the relationship between vigilance and related concepts that are used in response to anticipated public threats. Authority based vigilance involved contact tracing and policing of movement and behaviours. In individual outward facing vigilance people were asked to be alert to, analyse, and react to risk in their immediate environment. Inward facing vigilance required people to gather and react to information about their own behaviours and within their own bodies. There was a relationship between different types of vigilance; as risk increased and authority-based vigilance was less successful in containing the spread of infection, individual vigilance had a stronger role to play. This extension of vigilance at the micro-level sees some of the same unintended consequences as Weir and Mykhalovskiy describe at the global level, particularly in how burdens are inequitably distributed and experienced