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Frogs and Frog Habitat

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Yarnel Lagoon and Burrawang West Lagoon are known to support breeding populations of a number of frog species including the Barking Marsh Frog (Limnodynastes fletcheri), Peron’s Tree Frog (Litoria peronii), the Inland Banjo Frog (Lymnodynastes interioris) and the Desert Tree Frog (Litoria rubella) (Wassens et al. 2007, Wassens and Maher 2010). The delivery of appropriate flows to these wetlands is essential to maintaining these important frog populations.

More recent information on the occurrence of frog species found the distribution of Littlejohn’s Tree Frog (Litoria littlejohni), listed as vulnerable (EPBC and NSW TSC), included the upper Lachlan. However, there is little information on how flows might be better managed to ensure frog survival. Information on the abundance, species composition, richness and diversity of frog communities is needed, as well as information about the factors that influence populations, such as time since last flood, inundation frequency, habitat structure, and water quality.

This small wetland (around 21 ha) located near the junctions of Goobang and Yarrabandai creeks has become a relocation site for Purple-spotted Gudgeon (Mogurnda adspersa). It has been selected as a regionally significant wetland as important habitat for animal taxa at a vulnerable stage in their life cycles, and provides a refuge when adverse conditions such as drought prevail. It also supports an animal taxa considered endangered or vulnerable at the national level including the Barking Owl (Ninox connivens), Superb Parrot (Polytelis swainsonii) and Brolga (Grus rubicunda). A regulator has been constructed on the off-take to the lagoon from the Bumbuggan Creek which now enables more variable and natural water levels in the lagoon. It is currently considered in good condition, the lagoon area has been fenced and is under covenant and a willow removal program has been conducted.  

     

Frogs

More recent information on the occurrence of frog species found the distribution of Littlejohn’s Tree Frog (Litoria littlejohni), listed as vulnerable (EPBC and NSW TSC), included the upper Lachlan. However, there is little information on how flows might be better managed to ensure frog survival. Information on the abundance, species composition, richness and diversity of frog communities is needed, as well as information about the factors that influence populations, such as time since last flood, inundation frequency, habitat structure, and water quality.

Separated they live in Bookmarks right at the coast of the famous Semantics, large language ocean Separated they live in Bookmarks right

Green frog on gravel

Frogs

More recent information on the occurrence of frog species found the distribution of Littlejohn’s Tree Frog (Litoria littlejohni), listed as vulnerable (EPBC and NSW TSC), included the upper Lachlan. However, there is little information on how flows might be better managed to ensure frog survival. Information on the abundance, species composition, richness and diversity of frog communities is needed, as well as information about the factors that influence populations, such as time since last flood, inundation frequency, habitat structure, and water quality.

Separated they live in Bookmarks right at the coast of the famous Semantics, large language ocean Separated they live in Bookmarks right

Green frog on gravel

Climate Change/Variability

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Separated they live in Bookmarks right at the coast of the famous Semantics, large language ocean Separated they live in Bookmarks right

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Frogs

More recent information on the occurrence of frog species found the distribution of Littlejohn’s Tree Frog (Litoria littlejohni), listed as vulnerable (EPBC and NSW TSC), included the upper Lachlan. However, there is little information on how flows might be better managed to ensure frog survival. Information on the abundance, species composition, richness and diversity of frog communities is needed, as well as information about the factors that influence populations, such as time since last flood, inundation frequency, habitat structure, and water quality.

Separated they live in Bookmarks right at the coast of the famous Semantics, large language ocean Separated they live in Bookmarks right

Green frog on gravel
Climate change and/or climate variability needs to be considered in environmental water planning. Most forecasts for the southern Murray–Darling Basin predict reduced water availability which may heavily impact on some water-dependent ecosystems. “Water Availability in the Lachlan: a report to the Australian Government from the CSIRO Murray-Darling Basin Sustainable Yields Project” (CSIRO, 2008), which looks at future climate and current development and impacts on water availability, indicated that future runoff in the Lachlan would be more likely to decrease rather than increase. Under the median estimate 2030 climate the average period between winter–spring inflows to the Booligal Wetlands would increase by a further 24%, although the maximum period between events would not be affected. This would be likely to reduce the frequency of waterbird breeding events in these wetlands. Under the dry extreme 2030 climate, the average period between winter–spring inflows would increase by 87% (to once in over 15 years on average). The maximum period between the events would increase by 47% or by an additional 10 years.

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1990 2030 projection 2070 projection
Annual average Crookwell: 860 mm
Forbes: 527 mm
Ivanhoe: 302 mm
Wyalong: 481 mm 		-13% to +7% -40% to +20%
Extreme rainfall -3% to +7% -7% to +29%
Evaporation +2% to +13% +4% to +40%
Droughts per decade 3 2 to 5 1 to 10