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Mainland Sheoak Skink (Cyclodomorphus michaeli)

The Mainland Sheoak Skink is a moderately large, secretive skink of south-eastern Australia. It uses ground cover, fallen timber, bark, grass tussocks, heath and artificial refuges, so clearing and construction can remove both habitat and the shelters needed for daily activity and breeding.

Conservation status

Victoria, Flora and Fauna Guarantee Act 1988: Critically endangered.

Breeding season

The Mainland Sheoak Skink mates from late winter to early spring, carries developing embryos through late spring and summer, and gives birth in mid-summer. Plan clearing around the January to February birth period, while retaining ground cover and refuges throughout the year because animals may shelter beneath logs, bark, rocks, litter and grass clumps.

Reproductive mode: Live-bearing, or viviparous.

Litter size: 4 to 19 young have been reported. About six young is considered most likely in one action statement, while an earlier sample had a mean of 8.3 young.

Gestation: Approximately 2 to 3 months.

Size at birth: 41 to 46 mm snout to vent length and 0.75 to 1.44 g.

Age at maturity: Not recorded.

Nest or birth sites: No specialised nest or birth site is recorded. Females and young use ground cover and nearby refuges, including grass, heath, leaf litter, fallen timber, bark and forest edges.

Breeding frequency: One litter per year is reported.

Confirm timing locally before clearing, because rainfall, temperature and local weather can alter basking, surface activity, embryo development and birth dates.

  • Mating: Mating probably occurs in late winter or early spring, mainly August to September, with the breeding period extending into October. The largest testes were recorded in August and early September.
  • Gravid females: Females develop enlarged ovarian follicles in October, with embryos recorded from late November to early January. Gestation is about 2 to 3 months, so females may carry embryos from mid to late spring through mid-summer.
  • Births: Births occur in mid-summer. Records include births from late January to early February, with 13 young reported from one female over 24 and 26 January.
  • Newborns: Newborns are expected mainly from late January to early February, following the recorded birth period. Newborns measure 41 to 46 mm snout to vent length and weigh 0.75 to 1.44 g.
  • Active period: No species-specific seasonal activity period is recorded. As a general field pattern, adults may be surface active in any month when weather permits, with activity concentrated around dusk and dawn and additional basking during suitable daytime conditions.
  • Highest clearing risk: Risk is highest from late spring through summer, especially October to February, when females may contain embryos and births and newborns occur. Clearing can also injure sheltering animals at other times because individuals use logs, bark, rocks, litter, grass and shallow holes throughout the year.

Identification

This is a large-bodied skink with a long tail, smooth body scales and a small ear opening. It is usually found by lifting or checking cover rather than by searching open ground.

Adults have a snout to vent length of 29.5 to 174 mm. The tail is usually longer than the body, measuring 78.0 to 163.6% of snout to vent length.

The body has smooth scales and usually 20 to 24 longitudinal rows at midbody. The head normally has contacting prefrontal shields, no postnarial groove, paired frontoparietal shields and a visible parietal eye spot.

Typical midbody scale rows: 22

Subcaudal scales: 83 to 108, with a mean of 97.2 in the described sample

Fourth toe lamellae: 8 to 14, with a mean of 11.1

Identification: Distinguishing features

The Mainland Sheoak Skink is separated from the Tasmanian Sheoak Skink, Cyclodomorphus casuarinae, by its higher subcaudal scale count. The Mainland species has 91 to 108 subcaudal scales in the diagnosis, compared with 68 to 84 in the Tasmanian species.

It differs from the Alpine Sheoak Skink, Cyclodomorphus praealtus, by its species-level combination of scale and distribution characters. Identification should follow current taxonomic references because several Cyclodomorphus species can occur in south-eastern Victoria and New South Wales.

  • Do not identify the species from colour alone. Adult dorsal colour is variable and may consist of narrow dark scale edges.
  • Record clear photographs of the head, body, tail and a ruler-supported whole-animal view where possible.
  • Use scale counts and locality with an experienced reptile ecologist when separating Mainland, Alpine and Tasmanian Sheoak Skinks.

Identification: Field signs and handling

The species is often detected under loose bark, logs, boards, roofing iron, wood, rocks, grass clumps and other ground refuges. Shed skins may also indicate presence beneath artificial tiles or other cover.

No reliable information on tracks, scats, calls, nests or eyeshine is provided in the supplied documents. It is live-bearing and does not construct a nest.

Captured animals should be released at the point of capture as soon as possible. Replace moved rocks, logs and other refuge features carefully. The species can bite when handled, so use suitable handling procedures and wash and disinfect hands after contact.

Distribution: States and regions

The known range is in south-eastern Australia, extending through eastern Victoria and much of New South Wales. The supplied sources provide locality records and regional groupings, but do not provide a reliable national population estimate or population trend.

In Victoria, records are concentrated in the far east, including the East Gippsland and Eden region around Genoa, Wangarabell, Wingan Inlet, Cann River, Nadgee and Cape Green. Records also include sites near Wroxham and other localities in the eastern Victorian border region.

In New South Wales, records extend from the south coast and Illawarra through the Sydney region, the Blue Mountains, the Hunter region and as far north on the coast as Tea Gardens. The source discusses records from the Illawarra, Blue Mountains, Hunter River region, Central Coast and Sydney area.

States with supplied confirmed records: Victoria and New South Wales

Northern reported limit: Tea Gardens on the New South Wales coast, based on a communication cited by the source

Southern range: Eastern Victoria and adjacent south-eastern New South Wales

  • Known Victorian localities include Chandlers Creek north of Cann River, Genoa, Gipsy Point, Wroxham, Wangarabell and sites near the Victorian and New South Wales border.
  • Known New South Wales localities include Wollongong, Dapto, La Perouse, Mascot, Kangaroo Valley, Nowra, the Blue Mountains, Mount Victoria, Lawson, Katoomba, Wentworth Falls, Watagan State Forest, Cooranbong, Newcastle and Raymond Terrace.
  • Some additional records are based on sightings or literature reports without museum vouchers. These should be treated differently from confirmed voucher-backed records.

Distribution: Strongholds and population information

The supplied records indicate several regional groups, including eastern Victoria and the Eden region, the Illawarra and south coast, the Sydney and Central Coast area, the Blue Mountains, and the Hunter region. The documents do not establish the relative size or security of these groups.

No total population estimate, density estimate, generation length or quantified population trend is given in the supplied documents. Local absence during a search should not be treated as evidence that the species is absent because reptiles can have low abundance and low detectability.

Estimated national population: Not reported in the supplied documents

Population trend: Not reported in the supplied documents

Detection concern: The Victorian survey guideline describes reptiles as difficult to survey because of low abundance, low detectability and restricted habitat preferences

Habitat: Habitat types

The Mainland Sheoak Skink occupies a wide range of terrestrial habitats, provided suitable ground cover and refuge features are present. Records include dry and wet forests, woodlands, heath, grassland, coastal dunes and areas beside wetlands.

Reported habitats include dry sclerophyll forest, wet sclerophyll forest, rainforest, grassy woodland, montane forest, coastal heath, sandy heath, coastal grazing land, grassland and Casuarina leaf litter in coastal dunes.

In the Hunter region, the species has been reported from swamp oak forest at wetland edges. It has also been recorded in forest clearings, long grass, heathland and open grassy areas with basalt rocks.

Habitat: Vegetation and structure

Suitable sites commonly have dense or tall ground cover, including long grass, tussocks, heath, sedges, leaf litter, twigs and fallen timber. Casuarina, Gahnia, Comesperma, Xanthorrhoea, Leptocarpus and eucalypt vegetation are represented in reported Victorian and coastal habitat descriptions.

The species is often found at edges of tracks, roads, clearings, wetlands and forest openings where cover and basking opportunities occur together.

  • Retain logs, loose bark, wood piles, rocks, grass clumps, leaf litter and other ground refuges during site preparation where practicable.
  • Survey habitat within the development footprint and up to 50 m from the edge where suitable forest edges, clearings, heath, tussocks, wetlands or rocky ground occur.
  • Use habitat distribution models and recent records to help locate survey sites, then confirm habitat condition in the field.

Habitat: Climate and elevation

The species has been reported from coastal areas, lowland forest and heath, montane forest and the Blue Mountains. The supplied documents do not define a quantified elevation range or a firm climatic boundary.

Survey timing should account for local conditions. Victorian guidance identifies spring to early summer as the usual survey period and gives preferred conditions of 15 to 30°C air temperature and 18 to 40°C beneath artificial refuges.

Published elevation limit: Not specified in the supplied documents

Preferred refuge survey conditions in Victoria: 15 to 30°C air temperature and 18 to 40°C beneath tiles

Foraging habitat: Where it forages

The supplied documents provide little information on the species' diet or foraging range. They show that individuals feed and become active around ground cover, including long grass, leaf litter and the margins of logs and refuges.

An individual at Dapto was observed active and feeding around 2300 hours on a warm August evening. Other records place animals in long grass, leaf litter, heath, forest clearings and around logs, bark and sheet iron.

The documents do not identify particular prey species, food plants, daily foraging distances or home-range size.

Documented feeding time: Around 2300 hours on a warm evening in August at Dapto

Diet: Not specified in the supplied documents

Foraging range: Not specified in the supplied documents

  • Inspect the edges of logs, bark, grass clumps, leaf litter, boards and artificial refuges for animals using cover while foraging.
  • Avoid clearing connected patches of ground cover between refuges because the species may move and feed within these sheltered areas.
  • Treat food plants and prey records as unknown unless supported by project-specific observations or a specialist source.

Breeding habitat: Breeding biology

The Mainland Sheoak Skink is live-bearing. Breeding sites are likely to be within the same ground-cover habitats used for shelter and feeding, but the supplied documents do not describe a specialised birth site.

Mating may occur in late winter or early spring. Enlarged ovarian follicles in October and embryos from late November to early January indicate ovulation in mid to late spring and a gestation period of 2 to 3 months.

Births occur in mid-summer. A reported female gave birth to 13 young over 24 and 26 January, and other records place births in late January to early February.

Litter size increases with maternal size in the available sample. Newborns had a snout to vent length of 41 to 46 mm and a mass of 0.75 to 1.44 g.

Breeding season: Mating, late winter to early spring; ovulation, mid to late spring; births, mid-summer

Litter size: 4 to 16 young, mean 8.3 in a sample of 16 females

Gestation: Approximately 2 to 3 months

Incubation: Not applicable, because the species is live-bearing

Age at maturity: Not reported in the supplied documents

Lifespan: Not reported in the supplied documents

Newborn size: 41 to 46 mm snout to vent length and 0.75 to 1.44 g

Breeding habitat: Breeding habitat features

Females and young require intact ground cover and nearby refuges during the breeding and birth period. Reported sites include long grass, heath, leaf litter, fallen timber, bark, wood and forest edges.

The sources do not identify a nest, nursery burrow or fixed birth shelter. Avoid assuming that a site without visible adults is unoccupied during spring and summer.

  • Retain dense grass, tussocks, heath, litter, logs, loose bark and other low refuges in and beside the work area.
  • Where clearing cannot be avoided, arrange pre-clearance searches and fauna handling with timing that accounts for late spring to summer embryos and young.
  • Check artificial refuges repeatedly rather than relying on a single inspection, because detection varies with temperature and activity.

Sheltering habitat: Natural refuges

Shelter is a defining feature of the species' habitat. Individuals have been recorded beneath natural and artificial cover at forest edges, in heath, grassland, wetlands and coastal habitats.

Recorded refuges include loose bark, fallen logs, curled bark, rocks, holes in the ground, leaf litter, grass clumps, timber and dense undergrowth. One animal was torpid in a short burrow beneath a rock in dense grassland bordering a swamp.

Other records include animals under logs in wet or dry sclerophyll forest, beneath wood in Victorian undergrowth, in Casuarina leaf litter, and under bark on sandy soil in heath and forest.

Documented burrow: A short burrow under a rock in dense grassland bordering a swamp

Refuge dimensions: Not reported in the supplied documents

  • Inspect and retain logs, loose bark, rocks, wood, litter, grass clumps and shallow holes before and during clearing.
  • Replace moved refuges in their original position after inspection where safe to do so.
  • Do not remove large sections of bark or broken sheet rock unnecessarily during searches.

Sheltering habitat: Artificial refuges and survey effort

The Victorian reptile survey guideline identifies terracotta roof tiles as effective artificial refuges for Sheoak Skinks. For a targeted survey, it specifies 25 tiles per grid, normally arranged as a 5 by 5 grid with tiles about 5 m apart.

Tiles should be deployed for 2 to 4 weeks before checking, inspected 3 to 5 times at intervals of at least one week, and left in place until the survey ends. Grids should target heathy or grassy lowland forest, woodland and heath, especially near tracks or clearings.

Tiles per grid: 25

Standard grid: 5 by 5 tiles, with tiles about 5 m apart

Bedding-in period: 2 to 4 weeks

Inspection effort: 3 to 5 inspections, at least one week apart

Minimum tile grids per coupe in the Victorian guideline: 5, preferably more where practicable

  • Lay tiles upside down so the grooved surface is available to lizards.
  • Record shed skins and other evidence beneath tiles, and photograph evidence where possible.
  • Record air temperature and the temperature beneath 2 or 3 tiles at each grid visit.
  • Use at least two observers for reptile surveys and retain georeferenced photographs of target species or other significant observations.

Threats: Clearing and construction

The supplied documents identify habitat disturbance and timber harvesting as management concerns and show that clearing can remove the low cover and refuge features used by this secretive skink. They do not quantify the effect of each threat or provide a formal threat assessment for the species.

Clearing can remove dry or wet forest, heath, grassland, wetland edges, leaf litter, fallen timber, bark, rocks and other refuges. It can also remove habitat at forest edges and clearings where the species is often found.

The Victorian survey program treats Cyclodomorphus michaeli as a target species for timber-harvesting surveys. Although it has no current management prescription in that guideline, detection before works remains important, particularly because the species is listed as Critically Endangered in Victoria in the supplied information.

  • Search likely habitat before clearing, including the footprint, edges and areas up to 50 m from the coupe or work boundary where relevant.
  • Use at least two observers and conduct searches during warm conditions when reptiles are basking or active.
  • Stage clearing so fauna can be detected and moved only under an approved wildlife handling procedure.
  • Retain connected patches of ground cover and avoid unnecessary removal of logs, bark, rocks and artificial refuges.

Threats: Fragmentation, roads and hydrology

The supplied documents do not quantify the effects of fragmentation, vehicle strike or roads on this species. Roads and tracks are nevertheless repeatedly associated with habitat edges and basking or refuge records, so work near these features should not assume that the ground is unoccupied.

Wetland edges, swamp margins and areas subject to periodic inundation are included in the Victorian survey habitat guidance. Drainage, filling, altered inundation or sediment movement may therefore remove or degrade habitat used by the species, although species-specific hydrology impacts are not quantified in the supplied sources.

  • Inspect road verges, track edges, clearings, wetland margins and drainage interfaces where suitable cover remains.
  • Prevent unnecessary changes to wet ground, swamp edges and dense low vegetation during access and construction.
  • Use fauna exclusion, speed controls or other project measures where a project ecologist identifies a vehicle-strike risk.

Threats: Fire, predators and disease

Predation by the Highland Copperhead, Austrelaps ramsayi, has been reported. A purported record from a Queensland snake could not be confirmed and is considered an error in the source.

The supplied documents do not provide species-specific evidence on fire impacts, introduced predators, disease or pathogen transmission. General hygiene remains appropriate because reptiles may be handled during surveys and relocations.

  • Do not introduce additional disturbance or refuge loss while responding to predator, fire or weed-management activities.
  • Release captured animals at the point of capture unless an approved wildlife procedure requires otherwise.
  • Wash hands with water without soap after handling reptiles and disinfect hands before leaving the work area.

Survey methodology: 1. Artificial refuge survey

Mainland Sheoak Skinks are secretive, low-detectability reptiles that use ground cover and shelter beneath logs, bark, boards and other objects. Surveys should focus on suitable habitat and use artificial refuges, supported by visual searches during warm conditions.

Use artificial refuge surveys as the primary method where the species may be affected by clearing or construction.

Deploy 25 upside-down terracotta roofing tiles in each grid. A grid normally consists of 5 rows of 5 tiles, with tiles spaced 5 m apart.

Use at least five tile grids per project area or management unit where practicable. Use tile lines where the habitat is narrow or linear, and document the reason for the alternative layout.

Place grids in heathy or grassy areas in lowland forest, woodland or heathland, especially near track or clearing edges and other suitable ground cover.

Deploy tiles for 2 to 4 weeks before the first inspection so that they bed into the site.

Inspect each grid 3 to 5 times, with at least one week between inspections. Vary the inspection time and randomise the order in which grids are checked.

Turn tiles over quickly and record skinks, sloughed skins and other evidence of use. Photograph evidence where possible.

Record the air temperature and the temperature beneath 2 or 3 tiles in each grid during every inspection. Aim for ambient temperatures of 15 to 30°C and under-tile temperatures of 18 to 40°C where practicable.

Survey methodology: 2. Warm-weather visual and hand searches

Use at least two observers working together for visual searches, identification and safe capture if required.

Search during warm weather, preferably in the morning as temperatures rise and skinks become active and bask in the open.

Do not rely on visual searches in cold, wet, strongly windy or overcast conditions because detection is likely to be lower.

Search dense ground cover, grassy margins, heath, leaf litter, fallen timber, loose bark, rocks, boards and other objects that may provide shelter.

Scan ahead, around and above for basking or resting animals, then undertake careful hand searches where the target habitat is suitable.

Use gloves and suitable tools when moving ground cover, rocks, logs or litter. Return every moved feature to its original position.

Record the start and finish times of visual searches and the area or route covered.

Survey methodology: 3. Supplementary crepuscular and nocturnal searches

Treat evening or night searches as supplementary because the species is reported as largely crepuscular and has been observed active and feeding around 2300 hours on a warm evening.

Use these searches to inspect likely shelter and feeding areas around grass, leaf litter, logs, bark, heath and forest edges after warm conditions.

The supplied documents do not specify a standard number of spotlighting nights, search hours, transect length or search area for Mainland Sheoak Skink, so record the actual dates, times, observers, weather, route and area searched rather than applying an unsupported effort value.

Do not disturb refuges unnecessarily during night searches, and use a second observer to confirm identifications where possible.

Survey methodology: Minimum effort and reporting

  • Prioritise spring to early summer surveys, unless the project ecologist documents why another period is appropriate.
  • Survey the target habitat within the work area and up to 50 m from the coupe or disturbance boundary where the survey guideline applies.
  • Abandon a proposed survey site only where the habitat has been checked and is unsuitable, and record the reason as unsuitable habitat.
  • Use current habitat distribution models and recent or historical records to select survey sites, then confirm habitat suitability in the field.
  • Submit a track log for every survey day and provide the required GIS shapefile and site identifiers.
  • Take and submit at least one georeferenced, good-quality colour photograph for each target-species observation where possible.
  • Record air temperature, wind, cloud cover, survey times, observers, method, effort, location and identification evidence for every survey.
  • Report confirmed records to the relevant state wildlife database or atlas, in addition to the project records and any regulator reporting required by the approval.
  • Use the current accepted taxonomic name, Cyclodomorphus michaeli, and check the applicable state database name before data submission.

Before habitat disturbance: Avoid and minimise habitat loss

Plan the project around the species' use of ground-level shelter and dense vegetation. Avoid removing suitable habitat where practicable, and make the disturbance footprint and fauna controls clear before machinery enters the site.

  • Retain lowland forest, woodland and heathland areas with heathy or grassy ground cover wherever practicable.
  • Retain forest edges, track and clearing margins, dense grass, heath, leaf litter, fallen timber, loose bark and other shelter features used by the species.
  • Keep retained habitat connected to nearby suitable vegetation rather than creating isolated retained patches where the design allows.
  • Do not treat the 50 m survey focus used in the Victorian guideline as a general fauna exclusion buffer unless a project approval or management plan specifies that requirement.
  • Avoid unnecessary removal of logs, rocks, bark, boards and ground cover during site preparation.

Before habitat disturbance: Approvals and project planning

  • Check the current Commonwealth and state conservation status before works begin. The supplied profile identifies the species as not listed under the EPBC Act and Critically Endangered in Victoria, but the project team must verify current listings and approval requirements.
  • Confirm whether state wildlife permits, salvage authorities, animal ethics requirements or other approvals apply to survey, capture, handling or relocation.
  • Prepare a fauna management plan that identifies the species, suitable habitat, survey results, exclusion areas, authorised personnel, stop-work triggers, release sites, incident response and reporting duties.
  • Schedule clearing outside the spring to early summer survey and peak activity period where practicable, while recognising that the species may be encountered at other times.
  • Stage clearing so that retained habitat remains available while each work area is checked and released.

Before habitat disturbance: Pre-clearance and site setup

  • Complete a pre-clearance inspection of all areas to be disturbed, including vegetation edges, grassy areas, heath, leaf litter, logs, bark, rocks, boards and other ground refuges.
  • Use the survey methods above before clearing, with artificial refuge surveys started 2 to 4 weeks before inspection where time allows.
  • Mark retained habitat, no-go areas, logs, rocks, bark and other features that must not be disturbed.
  • Install exclusion fencing only where it can be kept intact and checked daily, and where it directs animals away from the work area without trapping them.
  • Brief the fauna spotter catcher, machine operators, supervisors and other workers on identification features, habitat controls, stop-work triggers and the approved response to an animal sighting.

During habitat disturbance: Daily controls and machinery coordination

Use staged, supervised clearing. The fauna spotter catcher should work in direct communication with machinery operators and should have authority under the project plan to pause work when an animal or suitable refuge feature is encountered.

  • Inspect exclusion fencing, no-go markers and retained habitat before work starts each day.
  • Confirm the day's disturbance footprint with the machine operator and supervisor before machinery moves.
  • Clear in short, supervised stages so the spotter catcher can inspect the next area before it is disturbed.
  • Keep machinery out of retained habitat and avoid driving over logs, rocks, bark, dense ground cover and wet or low-lying habitat unless the approved method requires it.
  • Stop machinery immediately when the spotter catcher calls a stop, when an animal is sighted, or when an unmarked refuge feature or suitable habitat is identified.
  • Keep a clear route to nearby retained habitat so an animal can be moved or allowed to leave without being driven towards machinery.

During habitat disturbance: Handling habitat features

  • Inspect logs, loose bark, rocks, boards, dense litter and grass clumps before they are moved or removed.
  • Move small refuge features slowly and with suitable gloves and tools, checking underneath and around them before lifting.
  • Return moved rocks, logs and other ground features to their original position where they are retained.
  • Do not remove large sections of bark or broken sheet rock unnecessarily.
  • Treat artificial survey tiles as live refuges until the survey is complete, and replace them carefully after each check.
  • Release any captured animal at its point of capture as soon as possible after identification unless the approved fauna management plan requires another action.

During habitat disturbance: If a skink is found

  • Pause work in the immediate area and keep workers, vehicles and machinery away from the animal.
  • Have the fauna spotter catcher confirm the identification using photographs and distinguishing features before the animal is handled.
  • Only personnel authorised under the project approvals and fauna management plan should capture, handle or relocate the animal.
  • Avoid chasing the skink through dense cover or placing hands, knees or feet where unseen animals may be sheltering.
  • Use a clean, suitable handling bag only when capture is necessary, keep handling brief, and release the animal into nearby retained habitat or at the point of capture as directed by the approved plan.
  • Do not move an animal to an isolated habitat patch or across a road, watercourse or other barrier unless the approved plan specifically allows it.
  • Take a georeferenced photograph where possible and record the location, time, habitat, action taken, release location and personnel involved.
  • If the animal is injured, keep it secure and cool as directed by the authorised fauna handler, and transfer it to an appropriately qualified wildlife carer or veterinarian under the project procedure.
  • Wash hands in water without soap after handling a reptile, then disinfect hands before leaving the work area.

During habitat disturbance: Stop-work triggers and incident records

  • Stop work when a Mainland Sheoak Skink is found inside or immediately beside the disturbance footprint.
  • Stop work when a refuge feature contains an animal, when identification is uncertain, or when the planned clearing method cannot protect the animal.
  • Stop work if exclusion fencing fails, if an animal is trapped against fencing, or if machinery enters a marked no-go area.
  • Record every target-species observation, including observations made during clearing, even when the animal is not captured.
  • Report injuries, deaths, unauthorised handling, failed controls and changes to the disturbance footprint to the project environmental officer and the approval holder.

After habitat disturbance: Post-clearance checks

Post-clearance checks should confirm that no animals remain in the disturbed area and that retained habitat and control measures remain functional. Monitoring should be scaled to the risk and to any approval condition.

  • Inspect the completed disturbance area and its edges for live or injured skinks, trapped animals, sloughed skins and disturbed refuge features.
  • Check that exclusion fencing, habitat markers and retained vegetation remain intact after each clearing stage and after heavy vehicle movements.
  • Replace or reinstate retained logs, bark, rocks and other ground features that were moved during approved works.
  • Document the final cleared area, retained habitat, release locations, incidents, photographs and any changes from the approved footprint.

After habitat disturbance: Monitoring and maintenance

  • Continue monitoring where the approval, fauna management plan or project risk assessment requires it, with effort directed to retained habitat and habitat edges.
  • Where artificial refuges are used for follow-up monitoring, retain the same grid locations and record inspection dates, temperatures, evidence and effort consistently.
  • Maintain exclusion fencing and no-go markers until the environmental officer confirms that the risk of further disturbance has ended.
  • Investigate any repeated records near the work boundary and adjust work controls if animals are being exposed to machinery or isolated by the works.

After habitat disturbance: Reporting and offsets

  • Provide the project owner, environmental officer and relevant regulator with the survey, clearing, handling, injury, mortality and monitoring records required by the approval.
  • Submit confirmed records to the relevant state wildlife database or atlas and retain the georeferenced photographs and track logs.
  • Apply any offset, habitat restoration or compensatory protection requirement specified by the approval or state conservation authority.
  • Do not assume that an offset replaces the need to avoid and minimise direct habitat disturbance.

Rehabilitation actions: Restore vegetation and ground cover

Rehabilitation should recreate the ground structure and shelter conditions used by Mainland Sheoak Skinks. Match the retained vegetation community and use local site information rather than applying a single planting recipe across all projects.

  • Re-establish dense grassy, heathy or shrubby ground cover in areas that formerly supported lowland forest, woodland or heathland habitat.
  • Use local provenance plants that match the retained community; documented Victorian habitat examples include Gahnia, Casuarina, Comesperma, Xanthorrhoea, Leptocarpus and Eucalyptus cephalocarpa associations.
  • Retain or reinstate leaf litter, low vegetation and connected forest or heath edges rather than leaving broad areas of bare ground.
  • Control weeds that replace native ground cover or prevent skinks from reaching shelter, using methods that do not injure animals or disturb retained refuges.

Rehabilitation actions: Reinstate shelter features

  • Place suitable logs, loose bark, rocks and other natural ground refuges through rehabilitated areas, with priority given to locations connected to retained habitat.
  • Replace artificial refuges only where they form part of an approved monitoring or management program, and inspect them for animals before moving or removing them.
  • Do not remove rehabilitated refuge features during follow-up maintenance unless they are checked first and the action is authorised.
  • Design wet or low-lying areas so that dense ground cover is retained while avoiding prolonged inundation of artificial refuges intended for monitoring.

Rehabilitation actions: Fire, predators and site management

  • Prepare a site-specific fire management approach that protects retained logs, litter, dense ground cover and connected habitat, because the supplied documents do not provide a species-specific fire interval.
  • Manage domestic animals, introduced predators and other site hazards where they are identified in the project risk assessment or approval.
  • Prevent machinery, vehicles and future maintenance activities from compacting or repeatedly disturbing rehabilitated refuge areas.
  • Keep rehabilitation areas linked to retained forest, heath or grassy habitat wherever the project layout permits.

Rehabilitation actions: Success measures and monitoring

  • Set measurable rehabilitation targets for native ground-cover establishment, survival of planted vegetation, retention of shelter features, weed cover, fencing condition and connection to retained habitat.
  • Inspect rehabilitation areas during suitable warm periods and record skink sightings, sloughed skins and refuge use using consistent methods.
  • Use artificial refuge grids where follow-up detection is required, applying 25 tiles per grid, 5 m spacing, 3 to 5 inspections and at least one week between inspections.
  • Continue monitoring until the project environmental officer and relevant approval authority accept that the habitat and fauna controls are functioning as planned.

Sources