biostudies-literatureUnknown91(4)Loredo AIInstalling beaver dam analogs (BDAs) in freshwater ecosystems is a process-based restoration technique mimicking natural beaver dams to increase stream channel complexity, floodplain connectivity, and hydrological residence time. BDAs have been applied in recent years by resource managers to improve riparian habitats with beneficial effects on ecosystem services, including improved water quality. While BDAs have been shown to reduce suspended sediments and nutrients in surface waters, research is needed to evaluate BDA effects on waterborne fecal pathogens such as <i>Giardia duodenalis</i> (syn. <i>G. lamblia</i>, <i>G. intestinalis</i>) and <i>Cryptosporidium parvum</i>. At a California riparian field site, this study used an <i>in situ</i> release trial of inactivated protozoal (oo)cystsApplied and environmental microbiologye0156924https://www.ebi.ac.uk/biostudies/studies/S-EPMC12016503biostudies-literatureEffect of beaver dam analogs (BDAs) on waterborne protozoal pathogens <i>Giardia duodenalis</i> and <i>Cryptosporidium parvum</i>.PMC12016503Loredo AIBird BHMonohan CPackham AJohnson SGraham NYarnell SElliott SSmith WAfalseEffect of beaver dam analogs (BDAs) on waterborne protozoal pathogens <i>Giardia duodenalis</i> and <i>Cryptosporidium parvum</i>.Installing beaver dam analogs (BDAs) in freshwater ecosystems is a process-based restoration technique mimicking natural beaver dams to increase stream channel complexity, floodplain connectivity, and hydrological residence time. BDAs have been applied in recent years by resource managers to improve riparian habitats with beneficial effects on ecosystem services, including improved water quality. While BDAs have been shown to reduce suspended sediments and nutrients in surface waters, research is needed to evaluate BDA effects on waterborne fecal pathogens such as <i>Giardia duodenalis</i> (syn. <i>G. lamblia</i>, <i>G. intestinalis</i>) and <i>Cryptosporidium parvum</i>. At a California riparian field site, this study used an <i>in situ</i> release trial of inactivated protozoal (oo)cysts2025-01-01T00:00:00Z2025 Apr2025-07-02T03:04:57.092Z2025-07-02T03:04:57.092ZS-EPMC120165034012601110.1128/aem.01569-24