02746nas a2200277   4500008004100000245007300041210006900114490000800183520187700191653002702068653003002095653002402125653002102149653003202170653002102202100003202223700002502255700001802280700002002298700002202318700002602340700001902366700001902385700002302404856004102427       2022                        eng d00aThe effect of inundation on frog communities and chorusing behaviour0 aeffect of inundation on frog communities and chorusing behaviour0 v1453 a<p>Globally, river regulation has degraded wetlands, including parts of the Murray-Darling Basin (MDB), an ecologically significant basin in Australia. Frogs in a floodplain environment largely depend on habitats created by river flows, but little is known about how frogs in the northern MDB are impacted by river regulation. We tested how wetland inundation affected frogs in a catchment of the northern MDB. We surveyed frogs between 2015 and 2019 to determine long-term changes in the community composition associated with wetland inundation from river flows. Additionally, we recorded nightly soundscapes for four days before and after the arrival of river flows between 2019 and 2020. The abundance and richness of frog species increased during larger inundation events leading to altered community composition (beta diversity). Warmer temperatures increased frog species richness, and frog community dominance decreased with decreasing vegetation cover (i.e., the relative abundance became more even across species). The abundance of five frog species (Limnodynastes tasmaniensis, Limnodynastes fletcheri, Crinia parinsignifera, Litoria peronii, and Litoria latopalmata) was higher in response to increased inundation extent. The total species richness of chorusing frogs increased after the arrival of river flows; six species chorused over the four nights preceding flow, whereas eight species chorused following the flow arrival, but the responses varied among species and sites. Frog species richness increased at three sites after flows, but not at others. After inundation, the choruses of Limnodynastes tasmaniensis increased whereas Limnodynastes fletcheri decreased. Our findings indicate that wetland inundation is beneficial for frog communities and suggest that chorusing behaviour varied in response to river flows inundating floodplain wetlands.</p>
10aEnvironmental watering10aFalse-colour Spectrograms10aFloodplain wetlands10aLong term survey10apassive acoustic monitoring10aRiver regulation1 aSarke, Mohammad, Abdur Razz1 aMcKnight, Donald, T.1 aRyder, Darren1 aWalcott, Amelia1 aOcock, Joanne, F.1 aSpencer, Jennifer, A.1 aPreston, David1 aBrodie, Sheryn1 aBower, Deborah, S.  uhttps://bio.acousti.ca/uk/node/58485