“…In North America, where the highest numbers of species have been documented (Graf & Cummings, 2007), the fauna has declined precipitously and ~72% of species are considered imperilled (Williams et al, 2017). Although steep mussel declines documented in the twentieth century have been attributed primarily to large‐scale hydrological changes from impoundments and channelization (Haag, 2012), more recent declines in some systems have been linked to changes in flow patterns stemming from drought and land use change (Golladay et al, 2004; Daniel & Brown, 2013; Randklev et al, 2018; Oosterhuis, Pardo & Ferreira‐Rodríguez, 2021). Drought can create mass mortality events in mussel assemblages by elevating temperatures and reducing the available habitat area for mussels (Sousa et al, 2018; DuBose et al, 2019).…”