O’Dell Creek Headwaters – Five Years of Stream and Wetland Restoration

Since 2005, River Design Group, Inc., has collaborated with resource agencies and landowners to develop and implement comprehensive stream and wetland restoration strategies in the O’Dell Creek Headwaters Wetland Complex southeast of Ennis, Montana. An important spring creek tributary to the Madison River, historical land management practices resulted in the degradation and loss of wetland habitats and physical changes to O’Dell Creek including channel downcutting and incision, bank erosion, and simplification of instream aquatic habitat. Projects have included reclaiming over 3.0 mi of irrigation and diversion ditches, reconstructing over 6.7 mi of spring creek, restoring 254 ac of prior converted wetlands, and improving the function of an additional 256 ac of wetland habitat in the project area. These activities have significantly improved habitat conditions for target fish species including brown trout and rainbow trout. Aquatic habitat improvements included modifying the channel geometry to a lower width-to-depth ratio configuration with riffle, run, pool and glide features. Coarse wood habitat structures and large roughness elements included roughened riffles were incorporated to diversity channel habitats. Wildlife habitat improvements enhanced existing and created additional palustrine emergent and scrub shrub wetlands throughout the project area, with emphasis on breeding, migration and stop-over habitats for neo-tropical migrant birds. In summary, this multi-year restoration effort has improved aquatic habitat complexity, reduced the supply of sediment loading to O’Dell Creek and the Madison River, re-established functional wetlands, and increased the quality and availability of habitat for a variety of migratory bird species

Ambiguous alliances: Native American efforts to preserve independence in the Ohio Valley, 1768-1795

Ambiguous Alliances examines the revolutionary era in the Ohio Valley from a Native American perspective. Rather than simply considering them as British pawns or troublesome mischief-makers, this account describes how Wyandots, Shawnees, Ottawas, Delawares, Miamis, and their native neighbors made decisions about war and peace, established alliances with Europeans, Americans, and distant Indian nations, and charted specific strategies for their political and cultural survival. They also suffered devastating personal and property loss and encountered significant disruption to their societal routines. Yet much about their daily lives remained unchanged, and their communities continued to foster a strong Indian identity.;This dissertation explores native objectives for the period 1768--1795, specifically looking at what the various nations were hoping to accomplish in their relationships with the British and the Americans. While preserving land and sovereignty were the Indians\u27 clearest aims, this study also emphasizes that the underlying goal of protecting their rights and property was to retain their cultural distinctiveness. Furthermore, these twin objectives were inextricably linked. The Indians\u27 ability to remain viable diplomatic partners with the Europeans depended on the maintenance of their landed independence.;Along with analyzing native objectives, this dissertation discusses Indian strategies to attain these goals and looks at how the Revolution assisted or hampered their execution. Some tribes actively recruited British or American allies; some attempted to remain neutral; others endeavored to form a united Indian front; and still others alternately extended their allegiance to both parties in an effort to secure both autonomy and protection.;Despite its heavy emphasis on native alliances and military maneuvers, this work also examines the Revolution\u27s challenges to the rhythms of daily life. In addition to physical destruction, wartime agendas altered native.economic patterns and sometimes even invaded cultural practices, threatening to constrict gender roles for women or to prevent nations from adopting captives to replace their deceased relatives. Although the era\u27s disruptions brought emotional distress, physical displacement, and political ambiguity, the tribes persisted in sustaining both their daily existence and their national identities

Estimating westslope cutthroat trout (Oncorhynchus clarkii lewisi) movements in a river network using strontium isoscapes

This paper is not subject to U.S. copyright. The definitive version was published in Canadian Journal of Fisheries and Aquatic Sciences 69 (2012): 906-915, doi:10.1139/f2012-033.We used natural variation in the strontium concentration (Sr:Ca) and isotope composition (87Sr:86Sr) of stream waters and corresponding values recorded in otoliths of westslope cutthroat trout (Oncorhynchus clarkii lewisi) to examine movements during their life history in a large river network. We found significant spatial differences in Sr:Ca and 87Sr:86Sr values (strontium isoscapes) within and among numerous spawning and rearing streams that remained relatively constant seasonally. Both Sr:Ca and 87Sr:86Sr values in the otoliths of juveniles collected from nine natal streams were highly correlated with those values in the ambient water. Strontium isoscapes measured along the axis of otolith growth revealed that almost half of the juveniles had moved at least some distance from their natal streams. Finally, otolith Sr profiles from three spawning adults confirmed homing to natal streams and use of nonoverlapping habitats over their migratory lifetimes. Our study demonstrates that otolith geochemistry records movements of cutthroat trout through Sr isoscapes and therefore provides a method that complements and extends the utility of conventional tagging techniques in understanding life history strategies and conservation needs of freshwater fishes in river networks.Bonneville Power Administration, Montana Fish, Wildlife & Parks, and the US Geological Survey funded this work. Partial support was provided by NSF grants OCE-0134998 and OCE-0215905 to SRT

Biotic and Abiotic Associations with Westslope Cutthroat Trout (Oncorhynchus clarkii lewisi) in the North Fork Flathead River Basin in northwestern Montana, USA and southeastern British Columbia, CAN under current and future climate scenarios.

Westslope Cutthroat Trout (Oncorhynchus clarkii lewisi; WCT) populations are declining across much of their native range due to threats such as habitat degradation, competition with non-native species, and climate change. Understanding how habitat characteristics impact distributions of nonhybridized WCT populations throughout a relatively pristine core conservation area is needed to inform management and conservation efforts. We investigated whether abiotic (e.g., gradient) and biotic (i.e., Bull Trout – Salvelinus confluentus) variables predicted WCT presence and predicted how future stream temperature projections for the area might be expected to alter distributions. We compared logistic regression models of WCT presence throughout tributaries of the North Fork Flathead River in Montana, USA and British Columbia, CAN models using a variety of metrics (e.g., Akaike Information Criterion). WCT were widespread throughout the 293 reaches analyzed (present in 69.3% of reaches). Their presence was predicted by gradient, summer temperature, and an interaction of pool density and Bull Trout. Using this regression model and climate projections under both moderate and extreme emissions scenarios, WCT presence is predicted to increase by 13.0% and 14.1% respectively in 2075 from current distributions based on changes in temperature alone. When changes in Bull Trout distributions and temperatures are considered, WCT distributions are predicted to increase by 13.4% and 17.5% under the moderate and high emissions scenario, respectively. This conservation area is predicted to continue to serve as a WCT stronghold, if other threats can be contained

How much information is needed to infer reticulate evolutionary histories?

Phylogenetic networks are a generalization of evolutionary trees and are an important tool for analyzing reticulate evolutionary histories. Recently, there has been great interest in developing new methods to construct rooted phylogenetic networks, that is, networks whose internal vertices correspond to hypothetical ancestors, whose leaves correspond to sampled taxa, and in which vertices with more than one parent correspond to taxa formed by reticulate evolutionary events such as recombination or hybridization. Several methods for constructing evolutionary trees use the strategy of building up a tree from simpler building blocks (such as triplets or clusters), and so it is natural to look for ways to construct networks from smaller networks. In this article, we shall demonstrate a fundamental issue with this approach. Namely, we show that even if we are given all of the subnetworks induced on all proper subsets of the leaves of some rooted phylogenetic network, we still do not have all of the information required to completely determine that network. This implies that even if all of the building blocks for some reticulate evolutionary history were to be taken as the input for any given network building method, the method might still output an incorrect history. We also discuss some potential consequences of this result for constructing phylogenetic networks

Combining demographic and genetic factors to assess population vulnerability in stream species

Accelerating climate change and other cumulative stressors create an urgent need to understand the influence of environmental variation and landscape features on the connectivity and vulnerability of freshwater species. Here, we introduce a novel modeling framework for aquatic systems that integrates spatially explicit, individual-based, demographic and genetic (demogenetic) assessments with environmental variables. To show its potential utility, we simulated a hypothetical network of 19 migratory riverine populations (e.g., salmonids) using a riverscape connectivity and demogenetic model (CDFISH). We assessed how stream resistance to movement (a function of water temperature, fluvial distance, and physical barriers) might influence demogenetic connectivity, and hence, population vulnerability. We present demographic metrics (abundance, immigration, and change in abundance) and genetic metrics (diversity, differentiation, and change in differentiation), and combine them into a single vulnerability index for identifying populations at risk of extirpation. We considered four realistic scenarios that illustrate the relative sensitivity of these metrics for early detection of reduced connectivity: (1) maximum resistance due to high water temperatures throughout the network, (2) minimum resistance due to low water temperatures throughout the network, (3) increased resistance at a tributary junction caused by a partial barrier, and (4) complete isolation of a tributary, leaving resident individuals only. We then applied this demogenetic framework using empirical data for a bull trout (Salvelinus confluentus) metapopulation in the upper Flathead River system, Canada and USA, to assess how current and predicted future stream warming may influence population vulnerability. Results suggest that warmer water temperatures and associated barriers to movement (e.g., low flows, dewatering) are predicted to fragment suitable habitat for migratory salmonids, resulting in the loss of genetic diversity and reduced numbers in certain vulnerable populations. This demogenetic simulation framework, which is illustrated in a web-based interactive mapping prototype, should be useful for evaluating population vulnerability in a wide variety of dendritic and fragment

Recurrent strokes under anticoagulation therapy: Sticky platelet syndrome combined with a patent foramen ovale

The sticky platelet syndrome (SPS) is a congenital disorder characterized by platelet hyperaggregability to epinephrine and/or adenosine diphosphate; this predisposes affected individuals to acute myocardial infarction, ischemic optic neuropathy, recurrent venous thromboembolism, and transient ischemic cerebral attacks and strokes. Here, we describe an unusual case with recurrent cerebrovascular accidents due to SPS, in the presence of a patent foramen ovale (PFO). We report an unusual case of a 56-year-old female patient with a PFO, who suffered from recurrent strokes despite long-term medication with clopidogrel for SPS. The patient underwent successful transcatheter closure of the PFO, and, in addition, she has been placed on low-dose acetylsalicylic acid. After 18-month follow-up, she demonstrated an intact atrial septum without any vegetations on the percutaneous device until today. She has had no further thromboembolic events