Fauna Spotters logo

Red-bellied Short-necked Turtle (Emydura subglobosa)

The Red-bellied Short-necked Turtle is a small to medium-sized freshwater turtle. In Australia, the EPBC Act Critically Endangered subspecies is restricted to shallow waterholes and associated river, stream and nesting-bank habitats in the Jardine River catchment on Cape York Peninsula, Queensland. Clearing, waterhole alteration, loss of riparian vegetation, fire, drought and disturbance of nesting banks can affect its very small population.

Conservation status

Commonwealth, EPBC Act 1999: Critically endangered.

Queensland, Nature Conservation Act 1992: Critically endangered.

Breeding season

Red-bellied Short-necked Turtles are egg-laying and can breed more than once each year. Wild nesting in northern Australia is recorded mainly from August to October, but mating, incubation and hatchling timing vary with rainfall, temperature and locality, so avoid clearing near waterholes and nesting banks during this period.

Reproductive mode: Sexual reproduction by separate sexes. Females lay eggs and may produce more than one clutch across several seasons.

Clutch size: Usually 4 to 11 eggs, with an average of 7. Captive records report 3 to 18 eggs per clutch.

Incubation: About 2 to 4 months in one account. Captive eggs hatched after 49 to 63 days, or 51 to 53 days at 28.5 to 30°C.

Size at hatching: Hatchlings have a straight carapace length of 32 to 37 mm and weigh 4 to 6 g.

Age at maturity: Generally 7 to 12 years. One account estimates about 9 years for females and 14 years for males.

Nest or egg sites: Moist peaty soils on floating mats and levees in freshwater swamps, and sandy or soft soil near water. Australian conservation advice also identifies sandy loam and gravel banks beside occupied waterholes and streams as potential nesting habitat.

Breeding frequency: Multiple clutches are common. Accounts report 2 to 4 clutches per year, while captive females laid eggs from February to October and sometimes produced up to 6 clutches.

Confirm timing locally before works, particularly after rainfall that enables nesting, and where temperature, river levels or wetland drying may shift incubation, hatching and refuge use.

  • Mating: Mating can occur year round, with peaks reported in autumn and spring. Captive observations also recorded repeated mating attempts throughout the year.
  • Gravid females: Gravid females were recorded in September, with sampling of gravid females occurring from 2 to 18 September. Gravid females were also recorded in October, while yolk accumulation can begin from late summer through winter.
  • Nesting: Wild nesting is reported from August to October, during the late dry season. Females leave the water, usually at night or early morning, dig a soil or sand cavity, lay eggs and return to freshwater.
  • Incubation: Eggs laid from August to October may remain in nests through the following months, based on an incubation period of 2 to 4 months. Captive eggs hatched after 49 to 63 days, but the available accounts give different wild hatching periods between localities.
  • Hatchlings: One wild hatchling was recorded in October. Another species account reports hatching in July and August, while captive hatchlings emerged after 49 to 63 days, so local emergence timing is uncertain.
  • Active period: Adults are expected to remain surface active throughout the year in their tropical range. Year-round mating is documented, and the species is highly aquatic but leaves water to bask and nest.
  • Dry season inactivity: No species-specific brumation, hibernation or aestivation is documented. From May to October, shallow semi-permanent waterholes may contract or dry, increasing the chance that turtles are concentrated in isolated pools and riparian refuges rather than becoming inactive.
  • Highest clearing risk: Risk is highest from September to November because females are nesting and eggs are being deposited in soil near water. July and August may include hatchlings, while eggs from late October nests can remain in the ground into January or February.

Identification

This is a short-necked freshwater turtle with a mid-brown shell and distinctive red, salmon and yellow markings. Colour is brightest in juveniles and usually fades with age.

The carapace is mid-brown. The plastron is light and marked with salmon pink or red blotches. A bright yellow stripe runs from the tip of the snout, above the eye, to the top of the ear, and yellow colour is also present on the upper jaw. A broken red stripe extends from the upper edge of the lower jaw along the neck.

Identification: Size and sex

Females are larger than males and have shorter tails. The maximum reported carapace length for the Australian subspecies is 18.5 cm for males and 22.4 cm for females. A broader species account gives male carapace lengths of 13.3 to 17.3 cm and female lengths of 15.2 to 25.5 cm.

Maximum male carapace length: 18.5 cm

Maximum female carapace length: 22.4 cm

Species account mass range: 0.02 to 22.5 kg, although this broad range is not specific to the Australian subspecies

Identification: Field recognition

The short neck and side-necked posture help separate this turtle from long-necked freshwater turtles. The yellow facial stripe, yellow upper jaw, red lower-jaw and neck markings, and red or salmon plastron are the most useful field characters. Juveniles generally show brighter red and yellow markings than adults.

  • Look for the turtle in shallow, off-river waterholes rather than assuming that a sighting in the main Jardine River channel is typical.
  • Do not rely on colour alone when identifying older animals, because the red and yellow markings fade with age.
  • No species-specific tracks, scats, calls, eyeshine or sloughs are described in the supplied sources.
  • Potential field signs include nests or disturbed sandy or gravelly banks, but the species' nest-site selection and wild hatchling emergence remain poorly known.

Distribution: Australian range

In Australia, the Jardine River turtle has a highly restricted distribution in far northern Queensland. The Australian range is confined to the Jardine River drainage basin on Cape York Peninsula.

The subspecies is restricted to the Jardine River catchment on the northern tip of Cape York Peninsula, Queensland. In bioregional terms, the Australian range lies within the Cape York Peninsula region, with records concentrated along the middle and lower Jardine River.

  • No Australian records are supplied for New South Wales, Victoria, Tasmania, South Australia, Western Australia, the Northern Territory or the Australian Capital Territory.
  • The species Emydura subglobosa has a broader range in southern New Guinea and northern Australia, but the critically endangered Australian subspecies addressed here is the Jardine River form.

Distribution: Known subpopulations

The subspecies is known from only 8 localities in the middle and lower reaches of the Jardine River. These records are associated mainly with small, shallow waterholes beside the river, rather than the main channel.

  • All known and historical subpopulations should be treated as important for protection.
  • Similar habitat around known and historical sites may support dispersal or future conservation translocations.

Distribution: Population size and trend

The available survey results indicate a very small population and poor knowledge of abundance. Recapture rates were low, so the number of animals detected does not represent a complete population estimate.

Survey period: 2014 to 2016

Waterholes surveyed with detections: 8

Individuals detected: 42

Individuals not detected again: 23 of the 42 detected turtles

Population condition: Severe fragmentation, small population size, very high decline over one generation and continuing decline are identified in the conservation assessment.

Habitat: Waterhole habitat

The Australian subspecies depends on freshwater habitats in the Jardine River catchment, especially shallow, semi-permanent waterholes beside the river. Riparian vegetation and adjacent nesting banks are part of the habitat requirement.

The typical habitat is a small, shallow waterhole 0.5 to 1.6 m deep. Waterholes are usually off the main river channel and may become connected to it during monsoonal wet-season inundation. Sightings in the main Jardine River channel are extremely rare.

  • Look for Melaleuca species lining the margins.
  • Eleocharis spike rush and Barringtonia acutangula, also known as freshwater mangrove, may occur around the waterholes.
  • Treat waterholes in and around known and historical subpopulations as potential habitat, even where turtles are not detected during a single survey.

Habitat: Riparian structure

Intact vegetation beside rivers, streams and waterholes provides shade that helps limit high water temperatures. It also supplies organic matter, snags for basking and shelter, and potential nesting areas.

  • Avoid clearing riparian vegetation at the water's edge.
  • Protect fallen timber and snags where they provide basking or shelter structure.
  • Prevent activities that remove banks, simplify waterhole margins or increase sediment entry.

Habitat: Nesting banks and climate

Gravel and sandy loam banks adjacent to rivers and streams support nesting. The subspecies is adapted to natural wet and dry seasons, but reduced rainfall and more intense drought can remove dry-season refuges and dry shallow waterholes.

  • The supplied sources do not define a specific elevation limit for the Australian subspecies.
  • The conservation advice identifies all habitat in and around known and historical subpopulations, plus similar surrounding habitat, as potentially critical until habitat requirements are better defined.

Foraging habitat: Diet

The Jardine River turtle spends most of its time in water and is expected to be an omnivorous feeder. The Australian subspecies' diet and detailed foraging range have not been established.

Captive Jardine River turtles consume meat. Based on other Emydura species, the subspecies is likely to eat a mixture of plant and animal material, including filamentous algae and insects.

  • The broader species account records algae, periphyton, aquatic macrophytes, sponges, aquatic invertebrates, fallen terrestrial insects, fish, molluscs, worms, seeds, vegetable matter and carrion as food items.
  • Do not treat any single food item as a confirmed dietary requirement for the Australian subspecies.

Foraging habitat: Foraging areas and behaviour

Most foraging is expected to occur in water within shallow waterholes, swamps, ponds, seasonal wetlands and slow-moving freshwater habitats. The turtles also bask, which helps regulate body temperature.

  • Protect submerged margins, aquatic vegetation, leaf litter inputs and intact riparian cover around occupied waterholes.
  • The supplied sources do not provide a measured home range, feeding distance, territory size or regular overland foraging distance.
  • Survey planning should include the whole waterhole and adjoining riparian zone rather than only the point where a turtle was observed.

Breeding habitat: Breeding biology

Females leave the water to lay eggs on land. Breeding information for the Australian subspecies is limited, and successful recruitment appears to be very low or irregular.

Female Jardine River turtles travel over land to lay eggs. Gravid females have been recorded in September and October, and the only hatchling observed in the wild was recorded in October. Nest-site selection, reproductive output and wild hatchling emergence are not well documented.

Breeding or nesting period: Known gravid females recorded in September and October; broader species information indicates August to October breeding.

Clutch size: Captive breeding suggests 7 to 13 eggs per clutch.

Egg incubation: Captive eggs incubated at 28.5 to 30°C hatched after 51 to 53 days.

Wild hatchling timing: The only hatchling reported in the conservation advice was recorded in October.

Estimated age at maturity: Approximately 5 to 6 years is considered reasonable for the Australian subspecies, based on comparisons; a broader species account reports 7 to 12 years.

Estimated lifespan: Likely at least 69 years based on a related Emydura taxon; the broader species account reports a possible lifespan of about 100 years and 15 to 20 years in captivity.

  • Avoid clearing, earthworks, vehicle movement and fire management on adjacent sandy or gravelly banks during the nesting period.
  • Treat apparently suitable sandy loam and gravel banks beside occupied waterholes and streams as potential nesting habitat.
  • Protect nests if they are found, using an approved wildlife handling and nest-protection procedure.

Breeding habitat: Recruitment risk

Survey data from 2014 to 2018 showed notable gaps in size classes, suggesting that successful reproduction may not occur every year. Only two juveniles were detected during surveys from 2014 to 2016.

  • Keep feral pigs away from nesting banks and priority waterholes, particularly from September to November.
  • Record nests, hatchlings and juveniles separately from adults during fauna surveys.
  • Report evidence of nest digging, predation or failed recruitment to the relevant Queensland wildlife authority or project ecologist.

Sheltering habitat: Aquatic refuges

Shelter is provided mainly by waterholes, riparian vegetation and submerged or emergent timber. The sources do not describe species-specific burrows, dens, hollows or refuge dimensions beyond waterhole depth.

The main refuge habitat is formed by small, shallow, semi-permanent waterholes 0.5 to 1.6 m deep beside the Jardine River. These waterholes may provide dry-season refuges, but drought has caused some to dry completely or contract to small stagnant pools.

  • Retain water in existing waterholes and avoid drainage, infilling, diversion or excavation that changes depth or permanence.
  • Inspect isolated pools and off-river depressions before pumping, dewatering or sediment removal.
  • Do not assume that a waterhole without a current turtle sighting is unoccupied.

Sheltering habitat: Cover and basking structure

Melaleuca-lined margins, spike rush, freshwater mangrove, riparian shade and river snags provide cover, basking sites and shelter. The turtle can also move between water and land, including for nesting.

  • Retain standing and fallen timber at waterhole margins unless removal is required for an immediate safety reason.
  • Maintain shaded riparian edges and avoid clearing vegetation that reduces cover or increases water temperature.
  • The supplied sources do not report specific burrow, hollow, nest-cavity or ground-cover dimensions.

Threats: Project-related habitat impacts

The subspecies has a very small and fragmented Australian population, so impacts within the Jardine River catchment can affect a large proportion of the remaining population. Recruitment failure is a major concern.

Clearing of riparian vegetation, waterhole margins or adjacent sandy and gravelly banks can remove shade, shelter and nesting habitat. In-stream works, drainage, pumping, crossings and earthworks can change water depth, permanence, connectivity, substrate and water quality.

  • Map all waterholes, stream margins, riparian vegetation and potential nesting banks before clearing or construction.
  • Maintain buffers around waterholes and waterways in accordance with project approvals and species-specific advice.
  • Use sediment and erosion controls to prevent ash, soil and fine sediment entering waterholes.
  • Schedule dewatering, bank works and vegetation removal outside the September to November nesting period where practicable.
  • Have a fauna spotter catcher inspect isolated waterholes, pools and banks before disturbance, and stop work if a turtle, nest or hatchling is found.

Threats: Predators and recruitment

Feral pig predation is identified as the highest-ranked threat. Pig digging was observed beside all waterholes where turtles were recorded between 2014 and 2018, and the scarcity of juveniles indicates very low recruitment or survival.

  • Control feral pigs near known habitat, with particular focus during the nesting season from September to November.
  • Use fencing or other approved exclusion measures around priority waterholes where suitable.
  • Record pig tracks, digging and disturbed nests during site inspections.

Threats: Drought, fire and hydrology

Climate modelling predicts reduced dry-season and annual rainfall in the Cape York region, with more frequent or intense droughts likely to reduce dry-season refuges. Severe fire can burn wetland banks, remove understorey and cause ash and sediment slugs that increase turbidity and alter pools.

  • Monitor waterhole depth, persistence, temperature and water quality during drought and after fire.
  • Prevent avoidable changes to wet-season inundation and the connection between off-river waterholes and the river.
  • Use fire planning that limits severe burns around occupied waterholes and includes Traditional Custodians' knowledge.
  • Inspect for turtles and habitat impacts after fire, including ash deposits, sediment runoff, bank loss and loss of riparian shade.

Threats: Poaching, disease and roads

The rarity and attractive colouration of the turtle may make it a target for collection. Twenty-three turtles from one readily accessible waterhole were not detected again during 2014 to 2016, although the cause is uncertain. Shell rot and healed infection scars have been recorded, but disease is not currently considered a major documented threat to persistence.

  • Restrict unnecessary access to known waterholes and do not disclose precise locations publicly.
  • Use fauna handling, hygiene and equipment-cleaning procedures when working between waterbodies.
  • The supplied sources do not identify a specific road-mortality rate or road-crossing hotspot, so road risks should be assessed site by site where roads or crossings intersect waterholes, riparian habitat or nesting banks.
  • Manage vehicle access on sandy and gravelly banks to avoid crushing nests or disturbing nesting females.

Survey methodology: 1. Aquatic visual surveys

The Australian population, known as the Jardine River turtle, is restricted to the Jardine River catchment on Cape York Peninsula, Queensland. Surveys should focus on shallow, off-river waterholes, connected wetlands and nearby sandy or gravelly nesting banks.

Inspect all shallow, semi-permanent waterholes, river margins and connected wetlands within and near the proposed disturbance area.

Record turtles basking, swimming or sheltering, as well as tracks, nests, hatchlings, eggshells and predation signs.

Give priority to waterholes 0.5 to 1.6 m deep with Melaleuca, spike rush or freshwater mangrove along the margins.

Survey both the waterbody and adjacent gravel or sandy loam banks because females leave the water to lay eggs.

Sightings in the main channel of the Jardine River are extremely rare, so do not rely on main-channel searches alone.

Known Australian distribution: Jardine River drainage basin, northern Cape York Peninsula, Queensland

Known localities: Eight localities in the middle and lower Jardine River

Preferred waterhole depth: 0.5 to 1.6 m

  • Map each waterhole, wetland connection, riparian margin and potential nesting bank inspected.
  • Record the date, time, weather, water level, waterbody condition, search area, observers and survey method for every visit.

Survey methodology: 2. Night searches and basking searches

Use quiet night searches around waterholes and wetland margins where access is safe, and undertake daytime searches for basking turtles on banks, snags and other exposed structures.

Time surveys to include the wet and dry seasonal conditions that may affect waterhole connectivity and availability.

Search after rain or wet-season inundation when normally isolated waterholes may connect with the river, while recording the water level and connectivity at the time of the search.

Treat an absence from a single visit as inconclusive because recapture rates were low and many turtles detected during previous surveys were not seen again.

  • Use a consistent route and observation period between repeat visits so changes in detections can be compared.
  • Do not enter deep or unstable water, handle turtles solely to improve detection, or disturb potential nests during searches.

Survey methodology: 3. Capture, marking and demographic surveys

Use trapping or other capture methods only under an approved species survey design and by appropriately experienced personnel.

If capture is required, survey representative waterholes across the project area and record sex, carapace length, condition, age class and location before release.

Pay particular attention to juvenile detection because only two juveniles were detected during surveys from 2014 to 2016, indicating very low recruitment or survival.

Use repeated sampling where the project requires an abundance or population estimate, rather than treating opportunistic sightings as a population estimate.

Previous survey result: 42 individuals were detected in eight waterholes between 2014 and 2016

Recommended population monitoring interval: Repeat sampling at two-year intervals where ongoing population monitoring is required

  • Follow animal ethics, Queensland wildlife permit and hygiene requirements for any trapping, handling, marking or biological sampling.
  • Do not retain captured turtles on site longer than necessary, and release them at the point of capture unless an authorised wildlife professional directs otherwise.

Survey methodology: 4. Nest and recruitment searches

Inspect gravel and sandy loam banks adjacent to waterholes, rivers and streams for nests, eggs, hatchlings, nest cavities and signs of predation.

Schedule additional checks during the known nesting period of September to October, noting that the wider breeding period is not fully known.

Record feral pig digging, other predator signs, exposed eggs and failed nests without disturbing intact nests.

Use radio tracking only where an approved research or management programme requires information on seasonal movements, nest site selection or reproductive success.

Recorded gravid females: September and October

Only recorded hatchling: October

Captive clutch size: Approximately 7 to 13 eggs

  • Treat all suspected nests and nesting banks as habitat requiring protection until an experienced ecologist has assessed them.
  • Do not excavate nests or move eggs unless the action is authorised and forms part of an approved conservation or rehabilitation programme.

Survey methodology: Minimum effort and reporting

  • Obtain a project-specific survey design from a suitably qualified aquatic turtle ecologist because the supplied documents do not provide a prescribed number of nights, trap nights, transect length or search hours for development surveys.
  • Cover every waterhole, wetland, riparian margin and potential nesting bank that may be cleared, inundated, isolated, polluted or otherwise disturbed.
  • Repeat surveys when water levels, wet-season connectivity, fire or access conditions materially change the likelihood of detection.
  • Submit verified records, including nil records and locations of potential habitat, to the Queensland WildNet database and relevant project and environmental approval systems.
  • Report records through TurtleSAT where appropriate, while protecting precise locations from unauthorised collection or poaching.
  • Retain photographs, coordinates, effort, weather, water conditions, observer details, handling records and any permit or ethics approvals with the project file.

Before habitat disturbance: Avoid and minimise habitat loss

Treat all habitat in and around known and historical Jardine River turtle subpopulations as potentially important. The species has a very small known Australian population and is susceptible to disturbance across its restricted catchment.

Habitat critical to survival: Jardine River catchment rivers and streams, especially shallow off-river waterholes, nesting banks and intact riparian vegetation

EPBC status: Critically Endangered, effective from 21 December 2023

  • Avoid clearing shallow, off-river waterholes and their intact riparian margins wherever practicable.
  • Retain gravel and sandy loam banks used for nesting, together with the vegetation and shade beside rivers, streams and waterholes.
  • Maintain wet-season connections between waterholes and the Jardine River where they are part of the existing hydrology.
  • Keep works, stockpiles, vehicle access, lighting, noise and sediment disturbance outside retained waterholes, nesting banks and riparian buffers, using site-specific ecological setbacks set by the project ecologist.
  • Maintain movement areas around known and historical subpopulations because the conservation advice identifies surrounding suitable habitat as potentially important for dispersal and future conservation translocations.

Before habitat disturbance: Approvals and specialist planning

  • Check whether the action may have a significant impact on the EPBC Act listed taxon and obtain ecological and legal advice on whether an EPBC referral is required.
  • Obtain Queensland wildlife permits and any animal ethics approvals before surveying, trapping, handling, marking, translocating or collecting eggs or turtles.
  • Confirm the current Queensland listing and approval requirements before works begin, including requirements for protected wildlife and damage to habitat.
  • Prepare a fauna management plan that maps waterholes, wetland connections, nesting banks, riparian vegetation, access routes, exclusion areas, fauna handling procedures and stop-work triggers.
  • Include Traditional Custodians, including relevant Anggamudi and Injinoo Aboriginal Land Trust representatives, in planning where appropriate and follow agreed protocols for cultural knowledge.

Before habitat disturbance: Timing and site preparation

  • Avoid ground disturbance near nesting banks during September to October where practicable, and obtain ecologist advice before working during the broader September to November nesting management period.
  • Stage works so that retained waterholes remain available and connected during construction.
  • Complete a pre-clearance inspection of every affected waterhole, wetland margin, riparian strip and nesting bank before machinery enters the area.
  • Mark exclusion zones, access tracks, no-go waterholes, nesting banks and riparian vegetation clearly on plans and on the ground.
  • Install exclusion fencing only where it will not block turtle movement between retained water, nesting areas and suitable refuge, and inspect it regularly for trapped animals.

During habitat disturbance: Daily controls and machinery interface

The fauna spotter catcher should manage the work front as an aquatic turtle habitat, not only as a terrestrial clearing area. The site supervisor must be able to stop machinery immediately when a turtle, nest or unexpected wetland impact is detected.

  • Hold a daily pre-start briefing covering mapped waterholes, nesting banks, exclusion zones, access routes, turtle identification, speed limits and the stop-work procedure.
  • Inspect exclusion fencing, waterbody edges, sediment controls and machinery access points before work starts each day.
  • Use a dedicated fauna spotter catcher during clearing or earthworks near retained waterholes, wetland margins, riparian vegetation or nesting banks.
  • Keep machinery outside marked exclusion areas and require the operator to stop immediately when directed by the spotter catcher.
  • Prevent fuel, concrete, chemicals, sediment, wash water and spoil from entering waterholes, streams or wet-season flow paths.
  • Do not drive through shallow waterholes or use them for water extraction, vehicle washing, spoil placement or equipment storage.

During habitat disturbance: Animal found or injured

  • Stop work and establish a quiet exclusion area if a Jardine River turtle, nest, hatchling or eggs are found.
  • Allow the authorised fauna handler to assess the animal and minimise handling, noise, heat exposure and time out of water.
  • Do not handle, collect, mark, retain or relocate a turtle unless the person is authorised under the relevant Queensland requirements and the action is covered by the fauna management plan or permit.
  • If relocation is approved, move the turtle only to nearby suitable retained habitat selected by the project ecologist, preferably within the same local waterbody system, and record the original and release locations.
  • Do not move turtles across catchments or to an unrelated waterbody as a routine construction response.
  • Place an injured turtle in a secure, ventilated, temperature-appropriate container and arrange prompt assessment by an authorised wildlife carer or veterinarian.
  • Do not release an injured or apparently unwell turtle without advice from the treating veterinarian or authorised wildlife professional.

During habitat disturbance: Habitat features and stop-work triggers

  • Stop work for any turtle, nest, hatchling, eggshell cluster, fresh nest disturbance, unexpected waterhole connection or damage to a mapped nesting bank.
  • Stop work if sediment, ash, concrete, fuel, wastewater or other pollutants enter or are likely to enter retained aquatic habitat.
  • Pause work if dewatering, excavation or access changes the depth, flow, shade, substrate or availability of a retained waterhole.
  • Protect logs, snags, bank vegetation and other shelter or basking structures within retained habitat unless their removal is approved after ecological assessment.
  • Treat feral pig-damaged nests and banks as evidence requiring recording and additional protection, not as permission to clear the area.

During habitat disturbance: Records and incident response

  • Record every animal interaction, including date, time, coordinates, waterbody, condition, action taken, handler, release location and photographs where safe.
  • Record all cleared or retained waterholes, nesting banks, riparian vegetation, wetland connections, pollution events and breaches of exclusion zones.
  • Notify the site supervisor and environmental officer immediately of any injury, death, unauthorised handling, nest disturbance, pollution or habitat damage.
  • Escalate reportable incidents to the relevant Queensland and Commonwealth regulators in accordance with approval conditions.

After habitat disturbance: Post-clearance checks

Completion of clearing does not remove the risk to this species. Waterholes, nesting banks and wet-season connections must remain functional, clean and accessible throughout construction and operation.

  • Complete a fauna and habitat inspection after clearing and before the work front is released to construction or operations.
  • Check all exclusion fencing, drainage controls, sediment basins, culverts, crossings and waterbody edges for trapped turtles or blocked movement routes.
  • Inspect retained waterholes and nesting banks for altered depth, drying, sediment deposition, ash, bank damage, reduced shade and new feral pig activity.
  • Remove temporary materials, spoil and fencing that could trap turtles or obstruct movement, unless the approved management plan requires them to remain.

After habitat disturbance: Monitoring and maintenance

Priority monitoring interval in the conservation advice: Two-yearly repeat sampling for population trends, with appropriate precision

  • Continue population and habitat monitoring at affected and reference waterholes using consistent methods and record age classes, recruitment, water conditions and threats.
  • Monitor dry-season refugia during drought, particularly where construction has altered drainage, shading or water retention.
  • After fire, monitor water temperature, ash effects on water quality, sediment runoff, bank condition and turtle presence.
  • Maintain sediment, pollution, drainage, exclusion and predator controls for the period specified in approvals and until the environmental officer confirms that they are no longer needed.

After habitat disturbance: Reporting and offsets

  • Provide completion records to the approval holder, land manager and relevant regulators, including survey effort, sightings, incidents, habitat retained, rehabilitation areas and monitoring results.
  • Update Queensland WildNet and other approved databases with verified records and retain precise locations securely where poaching is a risk.
  • Implement any approved offset, conservation measure or compensatory habitat action required by EPBC or Queensland approval conditions.
  • Review the fauna management plan when monitoring shows declining waterhole availability, loss of age classes, poor recruitment or unexpected construction impacts.

Rehabilitation actions: Waterholes, banks and riparian habitat

Rehabilitation should recreate the shallow, shaded waterhole and nesting-bank conditions used by the Jardine River turtle. It should be planned with Traditional Custodians and measured against turtle habitat function, not only vegetation cover.

Preferred waterhole depth: 0.5 to 1.6 m

Relevant nesting substrates: Gravel and sandy loam banks

  • Reinstate or protect shallow, off-river waterholes with suitable dry-season water retention and safe wet-season connection where the approved design requires it.
  • Use locally appropriate Melaleuca species, spike rushes and freshwater mangroves to restore waterhole margins where these communities are naturally present.
  • Re-establish intact riparian vegetation to provide shade, organic matter, bank stability, basking structures and nesting habitat.
  • Restore gravel and sandy loam banks adjacent to rivers, streams and waterholes where females can travel from water to nest.
  • Prevent erosion, sediment slugs and polluted runoff from entering retained or rehabilitated waterholes.

Rehabilitation actions: Shelter, predators and fire

  • Retain or reinstate stable snags, logs and other basking or shelter structures where they are safe and naturally suited to the waterbody.
  • Do not install nest boxes as a substitute for natural turtle nesting banks unless a specialist conservation programme identifies a need and approves the design.
  • Control feral pigs around priority waterholes, with particular attention to the September to November nesting period.
  • Use fencing around priority waterholes only where it excludes feral pigs without blocking turtle movement or access to nesting areas.
  • Develop fire management with Traditional Custodians and local fire practitioners to reduce severe fire risk and monitor post-fire effects on water temperature, ash, sediment and habitat.

Rehabilitation actions: Monitoring and success measures

National conservation objective: Within ten years, sustain or increase area of occupancy and population size, with all age classes represented through successful breeding and recruitment

  • Monitor water depth, hydroperiod, wet-season connectivity, bank stability, riparian vegetation, feral pig activity, nest predation and turtle detections.
  • Use repeated surveys to assess whether all age classes are represented and whether hatchling and juvenile recruitment improves.
  • Treat successful rehabilitation as retention or recovery of suitable waterholes and nesting banks, continued turtle use, reduced nest predation and improving recruitment, rather than survival of planted vegetation alone.
  • Continue adaptive management when drought, fire, feral pigs, poaching or construction effects reduce habitat quality.
  • Share monitoring results with the relevant Queensland wildlife authorities, Traditional Custodians, land managers and the Commonwealth where approval conditions require it.

Sources