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Yellow-bellied Water Skink (Eulamprus heatwolei)

The Yellow-bellied Water Skink, Eulamprus heatwolei, is a small ground-dwelling skink associated with moist riparian areas, rocky watercourses, gullies and moist forest. It is listed as Vulnerable in South Australia and may use fallen and rotting logs, rocky crevices, understorey and scattered trees on development sites, particularly where these features provide shelter and alternating sun and shade.

Conservation status

South Australia, National Parks and Wildlife Act 1972: Vulnerable.

Breeding season

Yellow-bellied Water Skinks mate in spring, give birth in summer and are inactive over winter. Clearing may injure adults and newborns during the warm season, and may trap animals sheltering in logs, rocky crevices and dense vegetation during winter.

Reproductive mode: Live birth, also described as ovoviviparous in one source.

Litter size: Up to eight live young. Other records report up to five, or one to seven young.

Gestation: Not recorded.

Size at birth: Not recorded.

Age at maturity: Not recorded.

Nest or egg sites: Not applicable for live birth. Females use moist habitat with logs, rocky watercourses, pools and dense understorey.

Breeding frequency: Not recorded.

Confirm timing locally before clearing, because temperature, rainfall and local shelter conditions can shift emergence, activity and summer birth timing.

  • Mating: Mating occurs in spring. August to October was used in the existing seasonal interpretation, but the available sources do not identify an exact month or peak month.
  • Gravid females: The sources do not give a gestation period or the months when females are gravid. October to January is an operational estimate between spring mating and summer births, not a documented monthly record.
  • Births: Births occur in summer, described elsewhere as mid summer or late summer. November to December is not marked because the sources do not provide a precise monthly boundary; January and February represent the operational summer birth period used for planning.
  • Newborns: Newborns are expected after summer births. January and February are shown as the main operational period, although the sources do not state a separate juvenile emergence period or monthly abundance peak.
  • Active period: Adults emerge in early spring and are active through the warmer months. Spring is reported as the best observation season, while activity declines in autumn and is reduced during winter.
  • Winter inactivity: The species is inactive over winter and shelters in large moist, partially decayed logs, rocky crevices and dense vegetation. June to August is used as the operational winter period, with animals less able to escape machinery.
  • Highest clearing risk: Risk is highest from June to February because winter animals may be trapped in shelter, spring works may disturb mating adults, and summer works may affect gravid females and newborns. Retain large moist logs, rocky crevices, pool margins and dense understorey throughout this period.

Identification

This is a small olive-brown skink that is usually found on or close to the ground. It is most likely to be detected basking on low logs, moving between sun and shade, or sheltering in moist timber and rocky crevices.

Adults have an olive-brown upper body and tail with dark flecks. The flanks are dark brown with lighter spots.

A pale stripe runs from behind the mouth to the front of the ear opening. A narrow pale golden or yellowish stripe extends only a short distance behind the eye.

The belly is bright, unmarked yellow and extends up to the throat. The throat is white with black marbling.

Snout to vent length: Up to 90 mm in the South Australian source.

Body colour: Olive-brown above, with dark flecks and darker spotted flanks.

Belly and throat: Bright yellow belly and white throat with black marbling.

Identification: Distinguishing features

In the South Australian range, compare the species with the Eastern Water Skink, Eulamprus quoyii. The Yellow-bellied Water Skink has black marbling on the throat, and its pale yellow stripe ends behind the eye rather than extending well beyond it.

The Victorian guide records the species at about 100 mm snout to vent length and identifies it as a terrestrial, rock-associated skink.

  • Check the throat for black marbling.
  • Check that the pale yellow stripe behind the eye is short and ends behind the eye.
  • Record a clear colour photograph of any suspected individual, particularly where identification could be confused with another Eulamprus species.

Identification: Field signs and detection

The species is a ground-dwelling skink and may be seen basking on low fallen logs near moist dense understorey. It moves between patches of sun and shade, so short observations from shaded edges and basking sites can be useful during active weather.

The supplied documents do not describe diagnostic tracks, scats, calls, nests, sloughs or eyeshine for this species. A direct sighting or a good quality photograph is therefore the most useful field record.

  • Search moist logs, low timber, rocky crevices and the edges of dense understorey.
  • Look within one to two metres of water in suitable Fleurieu Peninsula riparian habitat.
  • Avoid moving or removing logs and rocks unless an approved fauna handling procedure requires it.

Distribution: National range

The species has a mainly eastern Australian distribution, with a disjunct South Australian population. The supplied documents do not provide a population estimate, density estimate or quantified population trend.

The main range extends from eastern Victoria along the Great Dividing Range to northern New South Wales.

In South Australia, the species occurs as a disjunct population around the northern shores of Lake Alexandrina at the mouth of the Murray River and on the southern Fleurieu Peninsula.

  • New South Wales: eastern parts extending north to northern New South Wales and associated Great Dividing Range areas.
  • Victoria: eastern Victoria and the north-east Victorian region represented in the identification guide.
  • South Australia: the Lake Alexandrina and southern Fleurieu Peninsula populations.

Distribution: Known South Australian strongholds

The South Australian distribution extends from Strathalbyn south-west to Cape Jervis on the Fleurieu Peninsula. Suitable sites include riparian areas, rocky watercourses with pools, gullies and moist forest where logs, rocky crevices and dense understorey remain.

Lake Alexandrina area: Northern shores of Lake Alexandrina at the mouth of the Murray River.

Fleurieu Peninsula: From Strathalbyn south-west to Cape Jervis.

Population information: No population size, density or quantified trend is provided in the supplied documents.

Distribution: Project records and habitat interpretation

The supplied South Australian project report identifies Eulamprus heatwolei as a Vulnerable species under the South Australian NPW Act and considers scattered trees in the project area capable of providing indirect habitat resources.

The report specifically identifies fallen logs, rotting logs, shelter, shade and sunny patches, together with food resources such as invertebrates and small vertebrates. This indicates that isolated trees can have habitat value where they contribute to connected ground timber and moist gully or riparian habitat.

Habitat: Habitat types

Habitat suitability depends on moisture, shelter and a usable mosaic of sun and shade. Free water is common in the most suitable habitat, but the species can also occur in forest without surface water where large moist rotting logs are available.

The species occurs in a variety of vegetation types, including riparian areas, rocky watercourses with pools, gullies and moist forest.

On the Fleurieu Peninsula it is most common in riparian areas, typically within one to two metres of water. Rocky watercourses with pools are considered more suitable than fast-flowing streams.

Forest sites without free water can also support the species where large moist rotting logs provide protection from drying.

Typical distance from water: Usually within one to two metres in Fleurieu Peninsula riparian habitat.

Preferred watercourse form: Rocky watercourses with pools rather than fast-flowing streams.

Habitat: Structural features

Suitable ground habitat has large, low, partially decayed logs with cracks and hollows large enough for entry, rocky crevices, dense understorey and moderate canopy cover.

The highest densities are associated with riparian areas where fallen low logs are common, moderate canopy cover is present and dense understorey creates a pattern of sun and shade.

Scattered native trees may contribute habitat indirectly by producing fallen and rotting timber, shade and sunny patches, and by supporting prey.

  • Retain large moist logs, low fallen timber and branches.
  • Retain rocky crevices and exposed rocky surfaces in and beside watercourses.
  • Maintain dense native understorey and a moderate canopy where present.
  • Protect moist gullies and riparian buffers from stock access, erosion and unnecessary clearing.

Habitat: Elevation and climate limits

The supplied documents do not give an elevation range or a defined climatic limit. They consistently identify moist microclimate, access to shelter and protection from desiccation as the main environmental requirements.

Foraging habitat: Diet

The Yellow-bellied Water Skink feeds on a broad range of small animal and plant foods on or close to the ground. Foraging habitat is therefore linked to moist native ground cover, fallen timber, rocky edges and understorey that support prey.

The recorded diet includes a variety of invertebrates, small vertebrates and fruit.

The supplied project report identifies invertebrates and small vertebrates associated with scattered trees as potential food resources.

Recorded food types: Invertebrates, small vertebrates and fruit.

  • Retain native understorey and ground cover that support invertebrate prey.
  • Retain fallen timber and leaf litter where these features occur within suitable moist habitat.
  • Prevent sediment and construction runoff from degrading rocky pool and riparian habitat.

Foraging habitat: Foraging behaviour

The species is a shuttling heliotherm. It moves between patches of sun and shade, using short basking and non-basking periods, with more extensive basking in the early morning and late afternoon and longer foraging periods during the heat of the day.

Foraging is likely to occur around logs, rocks, understorey and riparian edges, but the supplied documents do not provide a measured foraging range or home range.

Measured foraging range: Not reported in the supplied documents.

  • Inspect sunlit log edges and adjacent shaded cover during morning and late afternoon activity periods.
  • Treat connected patches of basking sites, shelter and prey habitat as one functional area during clearing assessments.

Breeding habitat: Breeding biology

Breeding occurs after winter inactivity, with mating in spring and live birth in late summer. Breeding habitat must provide a moist microclimate, nearby shelter and a connected mosaic of sun and shade.

Females give birth to live young rather than laying eggs. The supplied documents do not state a gestation period, age at maturity or lifespan.

Mating season: Spring.

Birth season: Late summer.

Litter size: Up to eight young.

Gestation: Not reported in the supplied documents.

Age at maturity: Not reported in the supplied documents.

Lifespan: Not reported in the supplied documents.

Breeding habitat: Breeding habitat features

Suitable breeding areas include moist riparian habitat, rocky watercourses with pools and moist forest containing shelter logs and dense understorey.

Large moist partially decayed logs provide stable, humid shelter and are used for overnight shelter and overwintering. Dense understorey may also reduce exposure to predators and drying conditions.

  • Retain large logs with cracks and hollows that allow skinks to enter.
  • Keep breeding habitat connected to nearby basking sites and shaded refuges.
  • Avoid clearing or disturbing moist timber and dense understorey during spring mating and late summer births where practicable.

Sheltering habitat: Logs and timber

Shelter is closely associated with moist timber and rocky crevices. These features provide overnight refuge, protection from predators and desiccation, and winter shelter.

The species prefers large, moist, partially decayed logs close to the ground. Suitable logs have cracks and hollows sufficiently large for entry.

Skinks typically shelter overnight and overwinter inside such logs. Removal of woody debris from riparian and moist forest areas can therefore remove both refuge and basking habitat.

Shelter size: The documents describe large logs and entry-sized cracks and hollows but do not give a minimum log diameter or hollow dimension.

  • Retain large fallen and rotting logs in place.
  • Do not stack, burn, chip or relocate habitat logs unless this is covered by an approved fauna management procedure.
  • Protect logs from machinery, stock access and excessive exposure caused by clearing surrounding understorey.

Sheltering habitat: Rock and vegetation refuge

Ground distribution is closely linked to logs and rocky crevices, with animals rarely found more than a couple of metres from these features.

Dense understorey provides cover from predators and helps maintain a moist microclimate. Moderate canopy cover, together with open sunny patches, supports thermoregulation.

Distance from shelter: Animals are rarely found more than a couple of metres from logs or rocky crevices.

  • Retain rocky crevices, exposed rocky surfaces and pool margins in watercourses.
  • Maintain dense native understorey around shelter features.
  • Avoid creating isolated, dry shelter patches by clearing the vegetation around individual logs or rocks.

Threats: Clearing and habitat modification

The main documented risks are loss and modification of moist habitat, especially removal of woody debris and understorey. Construction can affect the species through direct clearing, loss of shelter, drying of the microclimate, sedimentation and disruption of riparian habitat.

Removing fallen timber from riparian or moist forest habitat reduces basking and shelter sites. Reducing understorey density can make the microclimate drier and increase exposure to desiccation and predators.

Clearing scattered trees can remove future fallen logs, shade and sunny patches, and can reduce prey resources associated with the trees.

  • Avoid clearing large native trees, fallen logs, rotting timber, dense understorey and rocky crevices in or beside moist habitat.
  • Mark habitat timber and rocky refuge areas as exclusion zones before machinery enters the site.
  • Retain a connected mosaic of shade, open basking sites and dense cover.

Threats: Fragmentation, roads and machinery

The supplied documents identify habitat loss and modification but do not quantify the effects of roads or fragmentation for this species. As a small ground-dwelling skink closely associated with logs and crevices, clearing corridors and construction access can remove or isolate shelter and basking sites.

Direct mortality may occur if individuals are present in logs, rocky crevices, dense ground cover or the immediate work area.

  • Keep access tracks, compounds and laydown areas out of moist riparian habitat where practicable.
  • Inspect habitat features before removal and use an authorised fauna spotter catcher where handling or relocation is required.
  • Control vehicle speeds and avoid unnecessary vehicle movement through retained habitat.

Threats: Hydrology, erosion and sediment

Siltation can reduce exposed rocky surfaces in streams and may negatively affect the species. Erosion and altered runoff can also degrade pools, riparian understorey and moist shelter conditions.

The supplied documents do not provide species-specific evidence about changed flow regimes, but they identify moist microclimate and rocky pools as important habitat attributes.

  • Use erosion and sediment controls to prevent silt entering creeks, pools and rocky watercourses.
  • Maintain natural drainage and avoid concentrating runoff through retained skink habitat.
  • Prevent construction dewatering or drainage changes from drying logs, gullies and riparian understorey.

Threats: Fire, grazing and predators

The supplied documents do not provide species-specific fire thresholds or fire response data. Fire that removes logs, dense understorey or the sun and shade mosaic could reduce habitat suitability.

Grazing in riparian areas can damage understorey and shelter habitat. Dense understorey is also thought to provide protection from predators, so its removal may increase predation risk.

  • Retain unburnt moist timber and dense understorey where fire management permits.
  • Exclude or manage grazing in riparian areas during habitat restoration and construction.
  • Manage introduced predators and avoid creating exposed, simplified ground habitat.

Threats: Disease and other pressures

The supplied documents do not identify a species-specific disease threat. General reptile declines in the Victorian guide are associated with habitat loss, fragmentation and degradation, water quality decline, predation and removal of bush rock and fallen timber.

  • Prevent the spread of soil, plant material and other contaminants between sites using the project biosecurity procedure.
  • Do not remove bush rock or fallen timber from retained habitat.
  • Record and report injured or dead skinks and suspected impacts through the project fauna incident process.

Survey methodology: 1. Habitat assessment and targeted searches

Survey should focus on moist habitat, shelter and the sun and shade mosaic used by the Yellow-bellied Water Skink. The supplied documents do not prescribe a species-specific survey effort, so the project ecologist should set effort according to the disturbance area, habitat quality and level of detection required.

Map riparian areas, gullies, pools, rocky watercourses, moist forest, dense understorey, fallen timber and rocky crevices before selecting search sites.

Search around large moist, partially decayed logs, especially logs close to the ground with cracks or hollows large enough for skinks to enter.

Inspect habitat within a couple of metres of logs and rocky crevices, because the species is closely associated with these features.

Record water presence, canopy cover, understorey density, exposed rocks, woody debris, potential shelter sites and the condition of the surrounding habitat.

Activity pattern: Inactive over winter and emerges in spring.

Typical water proximity: Often within 1 to 2 metres of water on the Fleurieu Peninsula.

Shelter association: Usually within a couple of metres of logs or rocky crevices.

  • Undertake targeted searches during the warmer active period, rather than winter, when the species is inactive and shelters in logs.
  • Give particular attention to early morning and late afternoon basking areas, when the species basks more extensively.
  • Use a non-destructive search method and replace any moved cover exactly as found.

Survey methodology: 2. Visual detection and basking observations

Walk slowly through suitable habitat and scan logs, rock edges, understorey margins and sun patches for basking skinks.

Record the time, weather, location, habitat feature used, distance to water and whether the animal is basking, foraging or sheltering.

Use photographs to support identification, particularly where the similar Eastern Water Skink may occur.

Identify the species by its black-marbling on the throat and pale yellow stripe that ends behind the eye.

Maximum snout to vent length: Up to 90 mm.

Distinguishing features: Bright yellow belly, white throat with black marbling, and a pale yellow stripe ending behind the eye.

  • Time searches to include early morning, late afternoon and warmer parts of the day when animals move between sun and shade.
  • Avoid trampling dense understorey, collapsing crevices or disturbing large moist logs during searches.

Survey methodology: 3. Trapping and other detection methods

Use trapping only where the project ecologist has prepared a species-appropriate design, obtained required approvals and can provide frequent welfare checks.

The supplied survey guideline gives a three bucket pitfall line with buckets about 5 metres apart for the Blue Mountains Water Skink, not for the Yellow-bellied Water Skink, so that protocol must not be adopted as a target-species effort without expert review.

Provide shelter and protection from exposure and predators for any approved reptile traps, and close traps during unsuitable weather or when animal welfare cannot be maintained.

Consider whether trapping is justified after habitat assessment and visual searches, because the target species is strongly associated with logs, crevices, moist microhabitat and riparian edges.

  • Document the proposed trap type, number of traps, spacing, operating dates, checking frequency, weather limits, by-catch controls and release procedure before deployment.
  • Do not use a survey effort or detection probability from another Eulamprus species as evidence that the Yellow-bellied Water Skink is absent.

Survey methodology: Minimum effort and reporting

State conservation status: Vulnerable in South Australia.

National status in supplied project information: Not listed under the EPBC Act.

  • Define the survey area, target habitat, survey dates, start and finish times, weather conditions, personnel, methods and effort before fieldwork begins.
  • Survey the full disturbance footprint and connected habitat that may be affected by access tracks, machinery movement, stockpiles, drainage changes and sediment movement.
  • Record all individuals, signs, photographs, trap captures, mortalities, injuries and habitat features inspected, including negative search results and limitations.
  • Submit confirmed records to the relevant state wildlife database, including the Victorian Biodiversity Atlas where the work is in Victoria.
  • Report Yellow-bellied Water Skink sightings to the relevant South Australian threatened fauna authority where the work is in South Australia.

Before habitat disturbance: Avoid and minimise

Avoid disturbance to the moist, sheltered ground layer before considering salvage or relocation. The main planning risk is removal of logs, understorey, rocky shelter and riparian condition rather than loss of tree canopy alone.

Retain riparian areas and gullies with dense understorey, fallen timber, moderate canopy and a mosaic of sun and shade.

Retain large moist, partially decayed logs, low fallen timber, rocky crevices, pools and exposed rocky surfaces in streams.

Keep disturbance away from habitat that is within 1 to 2 metres of water where practicable.

Maintain connected strips of moist habitat between retained patches and avoid isolating logs, rocky shelter and understorey.

Prevent sediment entering creeks and pools, because siltation can reduce exposed rocky surfaces used by the species.

  • Do not clear fallen timber, branches, dense understorey or rocky shelter unless the approved design requires it.
  • Use existing cleared areas for access, laydown and stockpiles where practicable.
  • Retain shelter and shade on both sides of any temporary access route through suitable habitat.

Before habitat disturbance: Approvals and work planning

Confirm the South Australian Vulnerable listing and check state wildlife, native vegetation, watercourse and animal welfare requirements before works begin.

The supplied project information states that the species is not listed under the EPBC Act, but confirm the current national listing and whether other project impacts trigger an EPBC referral.

Prepare a fauna management plan that identifies habitat to retain, survey methods, exclusion measures, spotter catcher responsibilities, release sites, stop-work triggers and reporting requirements.

Schedule clearing outside winter shelter periods where practicable, and avoid spring and late summer breeding periods where this can be achieved without creating a greater risk.

Breeding timing: Mating occurs in spring and females give birth to up to eight young in late summer.

  • Stage works so that retained moist habitat remains available while each work area is cleared and stabilised.
  • Obtain any required permits before capture, handling, transport or release of reptiles.
  • Nominate an appropriately experienced fauna spotter catcher and a veterinarian or wildlife carer for injured animals.

Before habitat disturbance: Pre-clearance and site preparation

Complete a pre-clearance survey of all logs, rock piles, rocky crevices, understorey, pools, drainage lines and moist ground within the work area.

Mark retained logs, rocky shelter, riparian vegetation, exclusion zones and access boundaries before machinery arrives.

Install exclusion fencing where it can direct animals away from the work area without blocking movement to retained moist habitat.

Brief machinery operators on the location of retained habitat and the requirement to stop when directed by the fauna spotter catcher.

Confirm a nearby retained release area with suitable shelter, moisture, understorey and sun and shade before any capture occurs.

  • Do not place exclusion fencing across a watercourse or in a way that traps skinks away from shelter and water.
  • Check fencing and marked habitat features each day before work starts.

During habitat disturbance: Daily controls and machinery interface

The fauna spotter catcher must control the interaction between machinery and ground habitat. Work should proceed in small, supervised areas so that animals can move into retained habitat or be safely captured when they cannot escape.

Inspect the work area, exclusion fencing and retained habitat each morning before machinery starts.

Clear in small, defined stages, with the fauna spotter catcher positioned where the next habitat feature or clearing edge can be seen.

Keep machinery stopped while the spotter catcher checks logs, rock shelters, dense understorey, crevices, pools and other suitable ground habitat.

Require operators to stop immediately when directed by the spotter catcher, and do not resume until the animal or habitat risk has been managed.

Keep spoil, sediment, fuels, concrete washout and vehicle movements away from retained moist habitat and watercourses.

  • Use a slow, staged approach to ground disturbance rather than pushing all logs, rocks and vegetation into a single pile.
  • Do not burn, bury, chip or remove habitat logs and shelter features until the fauna spotter catcher has inspected them.

During habitat disturbance: Handling and relocation

If a Yellow-bellied Water Skink is found, stop work in the immediate area and allow it to move to retained habitat where safe to do so.

Only an appropriately authorised and experienced person may capture, handle, transport or release the animal.

Use a suitable clean container and minimise handling, heat exposure, noise and time in captivity.

Release the animal as soon as practicable into nearby retained habitat with moist shelter, dense understorey, logs or rocky crevices and access to sun and shade.

Do not relocate an animal outside its local habitat or across barriers unless the fauna management plan and approvals allow it.

  • Do not chase an animal through dense understorey, into water, into machinery movement areas or into an unsafe crevice.
  • Do not handle young or apparently gravid animals unnecessarily.
  • Send injured animals to a veterinarian or authorised wildlife carer and record the transfer.

During habitat disturbance: Habitat feature handling and stop-work triggers

Treat large moist logs, rotting logs, low fallen timber, rocky crevices, pools and dense understorey as fauna habitat until inspected.

Where approved, move a log or rock only under spotter catcher supervision and place it intact in nearby retained habitat with the same shelter orientation and ground contact.

Do not disturb or fill pools, rocky watercourses or drainage lines without checking the fauna management plan and relevant approvals.

Stop work if a skink is found in the active work area, if an animal is injured or trapped, if exclusion fencing fails, or if machinery cannot operate without damaging retained habitat.

Stop work if sediment, fuel, concrete or other pollutants enter suitable habitat or water.

  • Reassess the work method before restarting after any stop-work event.
  • Escalate repeated captures, unexpected habitat use, mortality or injury to the project ecologist and environmental officer.

During habitat disturbance: Records

  • Record the date, time, location, species identification, photograph, habitat feature, action taken, release location, condition and personnel for every animal encounter.
  • Record areas searched, habitat features removed or retained, daily exclusion fence inspections, stop-work events, injuries, mortalities and any changes to the approved method.
  • Maintain records of permits, fauna spotter catcher attendance, trap checks, veterinary transfers and notifications to regulators or wildlife databases.

After habitat disturbance: Post-clearance checks

Post-clearance work must confirm that no animals or suitable shelter were left exposed in the work area. Retained habitat should remain moist, connected and protected from sediment, weeds, grazing and unnecessary disturbance.

Inspect the cleared area, retained habitat edges, exclusion fencing, access routes, spoil areas and drainage controls after each clearing stage.

Check that logs, rocks, understorey and soil shelter identified for retention remain in place and have not been buried, crushed or dried out.

Undertake a final fauna check before removing fencing or releasing the area to general construction access.

Document any mortality, injury, habitat loss or unplanned disturbance and notify the project ecologist and relevant regulator where required.

  • Keep fauna controls in place until the site is stable and the environmental officer confirms that further construction will not affect retained habitat.
  • Repair damaged fencing, erosion controls and habitat protection measures promptly.

After habitat disturbance: Monitoring and reporting

Monitor retained riparian and gully habitat for moisture, understorey cover, fallen logs, rocky shelter, sediment and signs of isolation from nearby habitat.

Repeat targeted searches after works where the risk assessment identifies potential injury, displacement, loss of shelter or changes to water flow.

Compare post-work habitat condition with the pre-clearance records, including the number and condition of retained logs, rocky features and understorey areas.

Provide the project completion report to the approval holder and relevant authorities, including survey effort, encounters, relocations, injuries, mortalities, retained habitat and corrective actions.

  • Continue monitoring for the period specified in the approval or fauna management plan.
  • Submit confirmed occurrence records to the relevant state wildlife database.

After habitat disturbance: Connectivity and offsets

Maintain practical movement links between retained moist habitat, riparian vegetation, logs, rocky shelter and understorey patches.

Where residual impacts cannot be avoided, obtain advice on any required habitat restoration, conservation payment or offset under the applicable state approval.

Do not treat scattered trees alone as a substitute for moist ground habitat, logs, rocky crevices and dense understorey.

  • Document why avoidance and minimisation measures were insufficient before proposing an offset.
  • Manage any offset or restoration area for the habitat features used by this species, not only for tree cover.

Rehabilitation actions: Restore habitat structure

Rehabilitation should recreate the combination of moisture, shelter and patchy sun and shade used by the species. Tree planting alone will not replace the ground habitat described for the Yellow-bellied Water Skink.

Revegetate riparian areas and gullies with locally appropriate native understorey plants that provide dense cover and a moist ground microclimate.

Retain and reinstate large, low, moist logs and partially decayed timber close to the ground.

Retain or reinstate rocky crevices, exposed rocky surfaces and pools where they are part of the natural watercourse design.

Provide moderate canopy cover and a mosaic of sunny and shaded patches for shuttling heliothermy.

Restore watercourse form and protect pools from sediment, excessive flow alteration and erosion.

  • Place reinstated logs so that they have ground contact, cracks or hollows and remain close to dense understorey.
  • Do not remove woody debris from rehabilitated riparian or moist forest areas unless it creates a demonstrated safety or waterway risk.
  • Exclude grazing from recovering riparian habitat where grazing would reduce understorey or damage logs and banks.

Rehabilitation actions: Manage threats

Control weeds that reduce native understorey density or dry the ground layer.

Manage erosion and sediment at the source and maintain stable drainage through and around the rehabilitation area.

Limit domestic animal and feral predator access where predation risk is identified.

Use fire planning that protects moist logs, dense understorey, rocky shelter and riparian refuges, subject to the applicable fire authority requirements.

  • Do not apply fertiliser or pesticide where runoff could enter retained pools or streams.
  • Inspect rehabilitation after heavy rain, drought, fire and construction access, and repair damage promptly.

Rehabilitation actions: Monitoring and success measures

Monitor whether native understorey becomes dense enough to provide shelter and whether the ground layer remains moist through the active season.

Measure the retention and condition of logs, rocky crevices, pools, exposed rocky surfaces, canopy cover and sun and shade patches against the rehabilitation plan.

Record Yellow-bellied Water Skink observations using photographs and precise locations, while treating absence of records as inconclusive unless the approved monitoring design supports an absence conclusion.

Use adaptive management if the site dries, loses shelter, develops excessive sediment or fails to reconnect with nearby suitable habitat.

  • Set completion criteria for understorey establishment, log and rock retention, erosion control, water quality, predator and weed management before rehabilitation begins.
  • Report monitoring results, failed criteria and corrective actions to the approval holder and relevant authorities.

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