We evaluated the effectiveness of isolation management and stocking to meet protection and enhancement goals for native Colorado River cutthroat trout ( Oncorhynchus clarki pleuriticus ) in Wyoming (U.S.A.). As a management strategy of the Wyoming Game and Fish Department, cutthroat trout were isolated upstream of artificial barriers in small headwater streams. Non-native trout that might have ...

We experimentally acidified three low alkalinity first-order streams in forested catchments in Maine, USA. We evaluated water samples from a reference site above the point of hydrochloric acid addition and from two or three sites located 16 to 94 m downstream. Neutralization included protonation of weak acids, adsorption of sulfate, and ion exchange of base cations and aluminum (Al) for protons...

We investigated the conditions necessary for perceptual simultaneity of visual and auditory stimuli under natural conditions: video sequences of conga drumming at various rhythms. Under most conditions, the auditory stream needs to be delayed for sight and sound to be perceived simultaneously. The size of delay for maximum perceived simultaneity varied inversely with drumming tempo, from about ...

An erosion hazard index methodology (EHIM) was developed for assessing stream erosion. The index of stream erosion is designed as a management tool. Assessing stream erosion involves consideration of a range of aspects of streams and a value judgment about a desirable state. The assessment of the erosion indicators of streams was based on a state-wide assessment of physical stream condition. A ...

Streams are acyclic directed subgraphs of the logical $ow graph of a proof representing bundles of paths with the same origin and the same end. The notion of stream is used to describe the evolution of proofs during cut-elimination in purely algebraic terms. The algebraic and combinatorial properties of $ow graphs emerging from our analysis serve to elucidate logical phenomena. However, the ful...

Environmental DNA (eDNA) has recently been used for detecting the distribution of macroorganisms in various aquatic habitats. In this study, we applied an eDNA method to estimate the distribution of the Japanese clawed salamander, Onychodactylus japonicus, in headwater streams. Additionally, we compared the detection of eDNA and hand-capturing methods used for determining the distribution of O....

Input–output analysts are often confronted with requests for impacts assessments for economic shocks that stretch uncomfortably the assumptions of standard input–output modeling. This paper presents an approach to confronting a subset of these challenges straightforwardly in a way that ameliorates some of the more restrictive input– output assumptions, maintains the inter–industry detail of the...

Inspired by a construction of Escardó, Lawson, and Simpson, we give a general construction of C-generated objects in a topological construct. When C consists of exponentiable objects, the resulting category is Cartesian-closed. This generalizes the familiar construction of compactly-generated spaces, and we apply this to Krishnan’s categories of streams and prestreams, as well as to Haucourt st...

In this article we give an accessible introduction to stream differential equations, ie., equations that take the shape of differential equations from analysis and that are used to define infinite streams. Furthermore we discuss a syntactic format for stream differential equations that ensures that any system of equations that fits into the format has a unique solution. It turns out that the st...

The Homogeneous Multiprocessor (HM) has a linear-array topology, with interprocessor communications achieved by the sharing of memory between nearest neighbours, by adjacent-processor signalling, and through a high-speed network (the H-Network). The operating system nucleus (the HM-Nucleus) for the HM contains a communications subsystem that provides low-overhead communications, both for user p...