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DECEMBER 2023
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W I N T E R 2 0 2 3 | H O B A RT C I T Y. C O M . A U
W I N T E R 2 0 2 3 | H O B A RT C I T Y. C O M . A U
Waterbugs
key to our WATERWAYS REPORT rivulets
behind a clear drop in ecological health in Guy Fawkes Rivulet. The report recommends: • Removing willows from Hobart’s rivulets to improve ecological indicators over time. • Revegetating rivulet banks and increasing canopy cover over waterways to create habitat for waterbugs and other aquatic wildlife, such as platypuses. • Surveys should be carried out annually to provide increasingly valuable information about the health of Hobart’s rivulets. “The City of Hobart will build on this report by producing annual snapshots of our rivulets,” Cr Lohberger said. “These annual rivulet snapshots will reveal stronger trends in improved health or declines of Hobart’s rivulets, aid water management decisions and help to improve the health of our precious waterways.” Download the report from hobartcity.com.au/rivuletsreport
W I N T E R 2 0 2 3 | H O B A RT C I T Y. C O M . A U
WATERWAYS REPORT
Waterbugs key to our rivulets THE CITY OF HOBART has released its first ever report into the ecological health of Hobart’s four major rivulets: New Town Rivulet, Sandy Bay Rivulet, the Hobart Rivulet and Lambert Rivulet. “The science behind this report uses the tiny waterbugs native to our rivulets as telltales of the environmental health of our inland waterways,” City Water Portfolio Chair Councillor Ben Lohberger said. “Waterbugs sensitive to negative impacts on water health such as pollution and erosion are like canaries in the coal mine, with their numbers and diversity declining as rivulet health declines.” The report found all four rivulets were healthier upstream than downstream, with the Hobart and New Town rivulets degrading
behind a clear drop in THE CITY OF HOBART has ecological health in Guy released its first ever report Fawkes Rivulet. into the ecological health of The report recommends: Hobart’s four major rivulets: • Removing willows New Town Rivulet, Sandy from Hobart’s rivulets Bay Rivulet, the Hobart to improve ecological Rivulet and Lambert Rivulet. indicators over time. “The science behind • Revegetating rivulet this report uses the tiny banks and increasing waterbugs native to our canopy cover over rivulets as telltales of the waterways to create environmental health of habitat for waterbugs and our inland waterways,” other aquatic wildlife, Report author and freshwater ecologist John Gooderham searches for waterbugs. City Water Portfolio Chair such as platypuses. Councillor Ben Lohberger their healthiest and taking management of Hobart’s gradually from the naturally • Surveys should be carried said. action downstream to rivulet system. forested headwaters in out annually to provide “Waterbugs sensitive to reduce pollutants from “The results of our Wellington Park to their increasingly valuable negative impacts on water entering our waterways.” first ever surveys of the about the urbanised mouths at the information health such as pollution and The rivulet surveys, ecological health River Derwent. healthofofHobart’s Hobart’s rivulets. erosion are like canaries in Report author and freshwater ecologist John Gooderham searches for waterbugs. conducted in spring inland waterways provide a It found that Sandy Bay “The City of Hobart the coal mine, with their 2022, identified a drop in comprehensive report intoreport will build on this and Lambert suffer theirrivulets healthiest and taking management numbers and diversity of Hobart’s gradually from the naturally by producing annual ecological health on New the condition of our major more abrupt changes once declining rivulet as rivulet health action downstream to system. forested headwaters in snapshots of our rivulets,” Town Rivulet directly below rivulets,” Cr Lohberger said. reachpollutants urbanisedfrom declines.” “The results of our their waters reduce Wellington Park to their Cr Lohberger “This report clearly said. the Girrabong stormwater areas thanentering New Town The report all four of the ourand waterways.” firstfound ever surveys urbanised mouths at the “These annual rivulet outflow. Hobart rivulets. rivulets were healthier The rivulet surveys, demonstrates the ecological health of Hobart’s River Derwent. snapshots will reveal They also identified the of protecting Cr aLohberger said in spring importance than downstream, conducted inland waterways provide It found that Sandy upstream Bay presence of invasive willow theinupperstronger reaches trends of our in improved report2022, sets an with the Hobart and New reportthe identified a drop comprehensive into and Lambert rivulets suffer health or declines Town rivulets degradingof our major rivulets where they are at of trees as potential culprits importantecological baseline for the on New health the condition more abrupt changes once Hobart’s rivulets, aid water their waters reach urbanised rivulets,” Cr Lohberger said. Town Rivulet directly below management decisions and the Girrabong stormwater “This report clearly areas than New Town and help to improve the health outflow. demonstrates the Hobart rivulets. of our precious waterways.” They also identified the importance of protecting Cr Lohberger said Download the report from presence of invasive willow the upper reaches of our the report sets an hobartcity.com.au/rivuletsreport as potential culprits rivulets where they are at important baseline for the The world of waterbugs is alien to mosttrees people,
Waterbugs key to our rivulets THE CITY OF HOBART has released its first ever report into the ecological health of Hobart’s four major rivulets: New Town Rivulet, Sandy Bay Rivulet, the Hobart Rivulet and Lambert Rivulet. “The science behind this report uses the tiny waterbugs native to our rivulets as telltales of the environmental health of our inland waterways,” City Water Portfolio Chair Councillor Ben Lohberger said. “Waterbugs sensitive to negative impacts on water health such as pollution and erosion are like canaries in the coal mine, with their numbers and diversity declining as rivulet health declines.” The report found all four rivulets were healthier upstream than downstream, with the Hobart and New Town rivulets degrading
but for those willing to explore this miniature aquatic kingdom it is full of mystery, wonder and some of the strangest creatures on the planet.
The world of waterbugs is alien to most people, but for those willing to explore this miniature aquatic kingdom it is full of mystery, wonder and some of the strangest creatures on the planet.
SCAN TO LEARN MORE
Lord Mayor Councillor Anna Reynolds C/- Town Hall Hobart 7000 M: 0423 222 149 E: lord.mayor@ hobartcity.com.au
Many caddis are master builders, creating protective structures from sand grains, silk, or in the case of the log cabin caddis, freshly-cut water weed lumber.
Deputy Lord Mayor Councillor Helen Burnet C/- Town Hall Hobart 7000 M: 0417 284 267 E: cr.burnet@ hobartcity.com.au
Alderman Marti Zucco 364A Elizabeth St. North Hobart 7000 M: 0418 120 060 E: ald.zucco@ hobartcity.com.au
Councillor John Kelly C/- Town Hall Hobart 7000 M: 0473 884 052 E: cr.kelly@ hobartcity.com.au
SCAN TO LEARN MORE
Lord Mayor Councillor Anna Reynolds C/- Town Hall Hobart 7000 M: 0423 222 149 E: lord.mayor@ hobartcity.com.au
Councillor Dr Zelinda Sherlock C/- Town Hall Hobart 7000 M: 0439 720 549 E: cr.sherlock@ hobartcity.com.au
Many caddis are master builders, creating protective structures from sand grains, silk, or in the case of the log cabin caddis, freshly-cut water weed lumber.
Deputy Lord Mayor Councillor Helen Burnet C/- Town Hall Hobart 7000 M: 0417 284 267 E: cr.burnet@ hobartcity.com.au
Alderman Simon Behrakis C/- Town Hall Hobart 7000 M: 0436 027 369 E: ald.behrakis@ hobartcity.com.au
Alderman Marti Zucco 364A Elizabeth St. North Hobart 7000 M: 0418 120 060 E: ald.zucco@ hobartcity.com.au
Councillor Bill Harvey C/- Town Hall Hobart 7000 M: 0428 243 964 E: cr.harvey@ hobartcity.com.au
Councillor John Kelly C/- Town Hall Hobart 7000 M: 0473 884 052 E: cr.kelly@ hobartcity.com.au
Councillor Louise Elliot C/- Town Hall Hobart 7000 M: 0401 272 743 E: cr.elliot@ hobartcity.com.au
Mountain shrimp live in the Hobart Rivulet just above Strickland Falls. They were described from fossils before the first living examples were discovered in Hobart in 1893 and have barely changed form over 300 million years.
Mountain shrimp live in the Hobart Rivulet just above Strickland Falls. They were described from fossils before the first living examples were discovered in Hobart in 1893 and have barely changed form over 300 million years. Alderman Councillor Councillor Councillor Dr Zelinda Sherlock C/- Town Hall Hobart 7000 M: 0439 720 549 E: cr.sherlock@ hobartcity.com.au
Councillor Mike Dutta C/- Town Hall Hobart 7000 M: 0437 455 672 E: cr.dutta@ hobartcity.com.au
Simon Behrakis C/- Town Hall Hobart 7000 M: 0436 027 369 E: ald.behrakis@ hobartcity.com.au
Councillor Ben Lohberger C/- Town Hall Hobart 7000 M: 0409 817 860 E: cr.lohberger@ hobartcity.com.au
Bill Harvey C/- Town Hall Hobart 7000 M: 0428 243 964 E: cr.harvey@ hobartcity.com.au
Councillor Ryan Posselt C/- Town Hall Hobart 7000 E: cr.posselt@ hobartcity.com.au
Louise Elliot C/- Town Hall Hobart 7000 M: 0401 272 743 E: cr.elliot@ hobartcity.com.au
Councillor Mike Dutta C/- Town Hall Hobart 7000 M: 0437 455 672 E: cr.dutta@ hobartcity.com.au
Councillor Ben Lohberger C/- Town Hall Hobart 7000 M: 0409 817 860 E: cr.lohberger@ hobartcity.com.au
Councillor Ryan Posselt C/- Town Hall Hobart 7000 E: cr.posselt@ hobartcity.com.au
Alderman Louise Bloomfield C/- Town Hall Hobart 7000 M: 0418 388 164 E: ald.bloomfield@ hobartcity.com.au
Alderman Louise Bloomfield C/- Town Hall Hobart 7000 M: 0418 388 164 E: ald.bloomfield@ hobartcity.com.au
Report author and freshwater ecologist John Gooderham searches for waterbugs.
gradually from the naturally forested headwaters in Wellington Park to their urbanised mouths at the River Derwent. It found that Sandy Bay and Lambert rivulets suffer more abrupt changes once their waters reach urbanised areas than New Town and Hobart rivulets. Cr Lohberger said the report sets an important baseline for the
management of Hobart’s rivulet system. “The results of our first ever surveys of the ecological health of Hobart’s inland waterways provide a comprehensive report into the condition of our major rivulets,” Cr Lohberger said. “This report clearly demonstrates the importance of protecting the upper reaches of our rivulets where they are at
their healthiest and taking action downstream to reduce pollutants from entering our waterways.” The rivulet surveys, conducted in spring 2022, identified a drop in ecological health on New Town Rivulet directly below the Girrabong stormwater outflow. They also identified the presence of invasive willow trees as potential culprits
behind a clear drop in ecological health in Guy Fawkes Rivulet. The report recommends: • Removing willows from Hobart’s rivulets to improve ecological indicators over time. • Revegetating rivulet banks and increasing canopy cover over waterways to create habitat for waterbugs and other aquatic wildlife, such as platypuses. • Surveys should be carried out annually to provide increasingly valuable information about the health of Hobart’s rivulets. “The City of Hobart will build on this report by producing annual snapshots of our rivulets,” Cr Lohberger said. “These annual rivulet snapshots will reveal stronger trends in improved health or declines of Hobart’s rivulets, aid water management decisions and help to improve the health of our precious waterways.” Download the report from hobartcity.com.au/rivuletsreport
The world of waterbugs is alien to most people, but for those willing to explore this miniature aquatic kingdom it is full of mystery, wonder and some of the strangest creatures on the planet.
SCAN TO LEARN MORE
Lord Mayor Councillor Anna Reynolds C/- Town Hall Hobart 7000 M: 0423 222 149 E: lord.mayor@ hobartcity.com.au
Many caddis are master builders, creating protective structures from sand grains, silk, or in the case of the log cabin caddis, freshly-cut water weed lumber.
Deputy Lord Mayor Councillor Helen Burnet C/- Town Hall Hobart 7000 M: 0417 284 267 E: cr.burnet@ hobartcity.com.au
Alderman Marti Zucco 364A Elizabeth St. North Hobart 7000 M: 0418 120 060 E: ald.zucco@ hobartcity.com.au
Councillor John Kelly C/- Town Hall Hobart 7000 M: 0473 884 052 E: cr.kelly@ hobartcity.com.au
Mountain shrimp live in the Hobart Rivulet just above Strickland Falls. They were described from fossils before the first living examples were discovered in Hobart in 1893 and have barely changed form over 300 million years.
Councillor Dr Zelinda Sherlock C/- Town Hall Hobart 7000 M: 0439 720 549 E: cr.sherlock@ hobartcity.com.au
Alderman Simon Behrakis C/- Town Hall Hobart 7000 M: 0436 027 369 E: ald.behrakis@ hobartcity.com.au
Councillor Bill Harvey C/- Town Hall Hobart 7000 M: 0428 243 964 E: cr.harvey@ hobartcity.com.au
Councillor Louise Elliot C/- Town Hall Hobart 7000 M: 0401 272 743 E: cr.elliot@ hobartcity.com.au
Councillor Mike Dutta C/- Town Hall Hobart 7000 M: 0437 455 672 E: cr.dutta@ hobartcity.com.au
Councillor Ben Lohberger C/- Town Hall Hobart 7000 M: 0409 817 860 E: cr.lohberger@ hobartcity.com.au
Councillor Ryan Posselt C/- Town Hall Hobart 7000 E: cr.posselt@ hobartcity.com.au
MERRY XMAS Santa Claus was the star of the show at this year’s Myer City of Hobart Christmas Pageant, thrilling a huge crowd that included sisters Everly and Rosabel (inset). Read more in CITY NEWS ON PAGE 15
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