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1. Adaptive Epistemologies: Conceptualizing Adaptation to Climate Change in Environmental Science

   https://doi.org/10.1177/0162243919898517  

   Hirsch, Shana Lee; Long, Jerrold (January 2020, Science, Technology, & Human Values)

   null (Ed.)

   This article explores how scientists adapt to a changing climate. To do this, we bring examples from a case study of salmon habitat restorationists in the Columbia River Basin into conversation with concepts from previous work on change and stability in knowledge infrastructures and scientific practice. In order to adapt, ecological restorationists are increasingly relying on predictive modeling tools, as well as initiating broader changes in the interdisciplinary nature of the field of ecological restoration itself. We explore how the field of ecological restoration is shifting its conceptual gaze from restoring to past, historic baselines to anticipating a no-analog future and consider what this means in terms of understanding the adaptive capacity of knowledge infrastructures and epistemic communities more broadly. We argue that identifying how scientists themselves conceptualize drivers of change and respond to these changes is an important step in understanding what adaptive capacity in science might entail. We offer these examples as a provocation for thinking about “adaptive epistemologies” and how adaptation by scientists themselves can facilitate or hinder particular environmental or sociotechnical futures. 

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2. Baltimore Ecosystem Study: Invertebrate and Restoration Habitat Data

   https://doi.org/10.6073/pasta/675c0b7286358f4ba2fc991bc2af1eaa  

   Swan, Christopher (January 2020, Environmental Data Initiative)

   An often-cited benefit of river restoration is an increase in biodiversity or shift in composition to more desirable taxa. Yet, hard manipulations of habitat structure often fail to elicit a significant response in terms of biodiversity patterns. In contrast to conventional wisdom, the dispersal of organisms may have as large an influence on biodiversity patterns as environmental conditions. This influence of dispersal may be particularly influential in river networks which are linear branching, or dendritic, and thus constrain most dispersal to the river corridor. As such, some locations in river networks, such as isolated headwaters, are expected to respond less to environmental factors and less by dispersal than more well-connected downstream reaches. We applied this metacommunity framework to study how restoration drives biodiversity patterns in river networks. By comparing assemblage structure in headwater versus more well-connected mainstem sites, we learned that headwater restoration efforts supported higher biodiversity, exhibited more stable ecological communities compared with adjacent, un-restored reaches. Such differences were not evident in mainstem reaches. Consistent with theory and mounting empirical evidence, we attribute this finding to a relatively higher influence of dispersal-driven factors on assemblage structure in more well-connected, higher order reaches. An implication of this work is that, if biodiversity is to be a goal of restoration activity, such local manipulations of habitat should elicit a more profound response in small, isolated streams than in larger downstream reaches. These results offer another significant finding supporting the notion that restoration activity cannot proceed in isolation of larger scale, catchment level degradation. This dataset represents the microhabitat sampling. 

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3. The business perspective in ecological restoration: issues and challenges

   https://doi.org/10.1111/rec.12564  

   Mohr, Jakki J.; Metcalf, Elizabeth Covelli (September 2017, Restoration Ecology)

   Much of the practice of restoration is conducted by businesses—contractors, consultants, designers, engineers. Restoration businesses interact with a variety of stakeholders to complete projects on time and on budget, and to achieve ecological and business objectives. Our research explores the business perspective in restoration; it is based on data collected from businesses (contractors, consultants, design engineers), agencies, and nongovernmental organizations involved in a Superfund cleanup project in Montana, one of the largest river restoration efforts ever. Our findings highlight several areas restoration businesses must navigate. First, restoration businesses must juggle potentially competing goals, maintaining ecological integrity while achieving profitability objectives. Second, these businesses must manage the risk that arises from variability in the natural environment as well as individuals' risk tolerances. Third, they must navigate the disconnect between “science” and “practice,” including how to best monitor restoration projects. Fourth, they must make decisions about new techniques and innovations. Fifth, on‐the‐ground implementation must acknowledge that personnels' motives and expertise might conflict with original plans. We discuss these findings in relation to relevant scholarly research, offering implications for theory and practice. For example, the business of ecological restoration requires learning over time to be profitable while achieving the desired ecological and social outcomes; restoration businesses leverage monitoring in pursuit of adaptive management and engage “frontline personnel” as important voices in the restoration process. Understanding the business of restoration adds an important perspective in the complex dynamics of social‐ecological systems. 

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4. River restoration can increase carbon storage but is not yet a suitable basis for carbon credits

   https://doi.org/10.1093/biosci/biae083  

   Lininger, Katherine_B; Lave, Rebecca (September 2024, BioScience)

   Abstract Increasing organic carbon storage in river corridors (channels and floodplains) is a potential cobenefit of some river restoration approaches, raising the possibility of using restoration to produce carbon credits and, therefore, increase restoration funding. However, the uncertainty already associated with existing carbon credits is compounded in river corridors, which are dynamic on daily, seasonal, annual, and longer timescales. We currently do not know how much river restoration approaches could increase carbon storage or how significant increased organic carbon storage from restoration would be compared with other forms of climate mitigation. We also do not know whether river corridor carbon credits could meet market needs for quickly established, stable, and simple credits. Therefore, we argue that biophysical and political economic uncertainties make river corridor restoration carbon credits currently unfeasible but that research on river restoration projects would demonstrate whether restoration carbon credits could be feasible in the future. 

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5. Restored off‐channel pond habitats create thermal regime diversity and refuges within a Mediterranean‐climate watershed

   https://doi.org/10.1111/rec.14110  

   Moravek, Jessie A; Soto, Toz; Brashares, Justin S; Ruhí, Albert (May 2024, Restoration Ecology)

   Cool‐water habitats provide increasingly vital refuges for cold‐water fish living on the margins of their historical ranges; consequently, efforts to enhance or create cool‐water habitat are becoming a major focus of river restoration practices. However, the effectiveness of restoration projects for providing thermal refuge and creating diverse temperature regimes at the watershed scale remains unclear. In the Klamath River in northern California, the Karuk Tribe Fisheries Program, the Mid‐Klamath Watershed Council, and the U.S. Forest Service constructed a series of off‐channel ponds that recreate floodplain habitat and support juvenile coho salmon (Oncorhynchus kisutch) and steelhead (O. mykiss) along the Klamath River and its tributaries. We instrumented these ponds and applied multivariate autoregressive time series models of fine‐scale temperature data from ponds, tributaries, and the mainstem Klamath River to assess how off‐channel ponds contributed to thermal regime diversity and thermal refuge habitat in the Klamath riverscape. Our analysis demonstrated that ponds provide diverse thermal habitats that are significantly cooler than creek or mainstem river habitats, even during severe drought. Wavelet analysis of long‐term (10 years) temperature data indicated that thermal buffering (i.e. dampening of diel variation) increased over time but was disrupted by drought conditions in 2021. Our analysis demonstrates that in certain situations, human‐made off‐channel ponds can increase thermal diversity in modified riverscapes even during drought conditions, potentially benefiting floodplain‐dependent cold‐water species. Restoration actions that create and maintain thermal regime diversity and thermal refuges will become an essential tool to conserve biodiversity in climate‐sensitive watersheds. 

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