Daniel Wieferich's research while affiliated with United States Geological Survey and other places

... Table S5). Maloney et al. (2022) also found minimal watershed-scale change in predicted biological condition using fish for the CBW. However, looking within the 19-year period revealed that the lowest percentage of streams in FairGood condition (66.3% or 79,057 kms) was in 2011. ...

... Human-induced climate change has caused widespread adverse impacts and related losses in terrestrial, freshwater and coastal and marine ecosystems (IPCC, 2022). Changes in climate, especially increases in air temperature and changes in rainfall patterns, alter freshwater systems and change the composition of fish in river ecosystems (Tsang et al. 2021). ...

... By summarising individual environmental variables at one of these three spatial units, these landscape data encompass a range of spatial extents at which fishes respond to changing environmental conditions (Wang et al., 2006). In total, we quantified 17 environmental variables to represent a variety of land cover classes, in addition to several climatic, geographic, and anthropogenic characteristics known to influence the distributions of fish species across the conterminous U.S.A. (Table 1; Cooper et al., 2019). We subset our environmental matrix by ecoregion to produce nine R matrices (n × m), in which rows corresponded to sites n and columns corresponded to environmental variables m. ...

... Preparations for anticipated flooding may have stimulated management in the form of preemptive drawdowns. But dams will eventually fill in with sediments and some are being removed [39]. A small amount of evapotranspiration from dams occurs that Milly and Dunn [32] estimated to be 1 mm of the 835 mm of precipitation into the Mississippi River water. ...

... Intentional dam removals typically occur during flows less than the mean annual flood (Major et al., 2017), and unplanned dam breaches or failure during larger flood events. We separated documented dam removals (AASHTO, 2005;Bellmore et al., 2015;Duda et al., 2016) into those occurring at flows greater or less than the mean annual flood for the system. The average Froude numbers for the flows associated with each category were determined and used as a guide to define the discharges for the experiments. ...

... In Washington state and beyond, natural resource managers often develop and apply 41 prioritization strategies to guide barrier culvert removal and replacement (McKay et al 2020). To 42 develop a plan, managers must have a reliable inventory of culverts within their entity, which 43 requires advanced mapping capabilities and extensive ground truthing efforts (Kemp & 44 O'Hanley 2010, McKay et al 2017. Barriers in an inventory are then commonly assessed using 45 quantitative and qualitative metrics, which typically consider habitat quantity and quality, 46 connectivity and passability, cost, and species-specific metrics (Martin 2019), to identify high priority barriers for correction (Kemp & O'Hanley 2010, McKay et al 2017. ...

... However, in Michigan's Lower Peninsula, infestation expansion was 3.3 ± 0.4 km/year from 2011 to 2013. Beech scale infestations in localized stands may expand as fast as 11.0 km/year (Wieferich et al., 2011), but can accelerate when coalescing with nearby infestations (McCullough and Wieferich, 2015). ...

... Devido a essas características, ottobacias nem sempre são adequadas para integrar influências humanas e fisiográficas a montante de trechos de estudo (por exemplo se os sítios de amostragem estiverem situados em interbacias). As ottobacias são similares ao sistema de unidades hidrológicas empregado nos EUA (Wieferich et al. 2015) e até mesmo a presença de cruzamentos viários (roadcrossings), barragens, pontos de lançamento de efluente ou retirada de água. Na literatura, seja em português ou inglês, não há padronização para o uso de termos como segmento (segment) e trecho (reach, stretch) de riacho , embora alguns autores (e.g. ...

... Natural influences such as physiography, geology, climate, and natural land cover determine the ecological potential of fluvial ecosystems. At the same time, anthropogenic stressors associated with the construction of dams, increased density of roadstream crossings, intensification of water withdrawals and mining activities, and expansion of agricultural and urban development practices alter that potential via changes to the quality, complexity, or interconnectedness of riverine habitats (e.g., Daniel et al., 2015;Dias et al., 2017;Dudgeon, 2019). Impacts of landscape-scale factors on riverine habitats and the organisms they support can vary across large geographic regions, in part due to differences in natural influences that constrain anthropogenic activities across the landscape and contribute to the structure of unique stressor gradients. ...

... Historically, programs charged with the protection and restoration of rivers and streams have focused on reachor site-scale processes (Flotemersch et al., 2006;USEPA, 1996), yet, increasingly, landscape information is being used to address local catchment-or watershed-scale influences on aquatic biological condition (Ettinger et al., 2021;Tsang et al., 2014;USEPA, 2012). Landscape factors, both natural (e.g., hydrology, topography, soils) and anthropogenic (e.g., urbanization and agriculture), function over large spatial scales to influence stream biological condition at local scales (Allan, 2004;Carlisle et al., 2009). ...