Short form Threatened species nomination form (Version Mar 2016) Abridged Threatened Species Nomination Form For nominations/assessments under the Common Assessment Method (CAM) where supporting information is available, but not in a format suitable for demonstrating compliance with the CAM, and assessment against the IUCN Red List threat status. Cover Page (Office use only for Assessment) Species name(scientific and common name): Hypocalymma sp. Cascade (R. Bruhn 20896) Nomination for (addition, deletion, change): Addition Nominated conservation category and criteria: EN B1ab(iii,v)+2ab(iii,v) Scientific committee assessment of eligibility against the criteria: This assessment is consistent with the standards set out in Schedule 1, item 2.7 (h) and Yes No 2.8 of the Common Assessment Method Memorandum of Understanding. A. Population size reduction B. Geographic range C. Small population size and decline D. Very small or restricted population E. Quantitative analysis Outcome: Scientific committee Meeting date: Scientific committee comments: Recommendation: Ministerial approval: Date of Gazettal/ Legislative effect: Page 1 of 7 Nomination/Proposal summary (to be completed by nominator) Current conservation status Scientific name: Hypocalymma sp. Cascade (R. Bruhn 20896) Common name: None Family name: Myrtaceae Fauna Flora Nomination for: Listing Change of status/criteria Delisting 1. Is the species currently on any conservation list, either in a State or Territory, Australia or Internationally? Provide details of the occurrence and listing status for each jurisdiction in the following table 2. Is it present in an Australian jurisdiction, but not listed? Listing category i.e. State / Territory in Date listed critically Listing criteria i.e. Jurisdiction which the species or assessed endangered or B1ab(iii)+2ab(iii) occurs (or N/A) ‘none’ International(IUCN Red List) National (EPBC Act) State/ Territory 1. WA 2015 Vulnerable D2 5/4/2017 Endangered B1ab(iii,v)+2ab(iii,v) Consistent with Schedule 1, item 2.7 (h) and 2.8 of the Common Assessment Method Memorandum of Understanding, it is confirmed that: this assessment meets the standard of evidence required by the Common Assessment Yes No Method to document the eligibility of the species under the IUCN criteria; Comments: surveys of the species were adequate to inform the assessment; Yes No Comments: No further surveys have been undertaken since 2014. A potential new subpopulation located in 2013, prior to the assessment, has yet to be confirmed in the field as no plants were found when surveyed in 2014. It is suspected that they were removed by road works. the conclusion of the assessment remains current and that any further information Yes No that may have become available since the assessment was completed supports or is consistent with the conclusion of the assessment. Comments: It is not possible to determine whether the total population size has increased or declined since the assessment in 2015. However the habitat within which the species occurs is highly threatened by road maintenance activities, with a loss of approximately 50 individuals from one subpopulation and potentially another five individuals at another subpopulation from road grading in 2014. This may directly and indirectly contribute to a decline in the area, extent and/or quality of habitat in the subpopulation. Without ongoing management a projected decline is expected. Meets criteria for Endangered B1ab(iii,v)+B2ab(iii,v). Page 2 of 7 Nominated national conservation status: category and criteria Presumed extinct (EX) Critically endangered (CR) Endangered (EN) Vulnerable (VU) None (least concern) Data Deficient Conservation Dependent What are the IUCN Red List criteria that support the recommended EN: B1ab(iii,v)+2ab(iii,v) conservation status category? Eligibility against the IUCN Red List criteria (A, B, C, D and E) Provide justification for the nominated conservation status; is the species eligible or ineligible for listing against the five criteria. For delisting, provide details for why the species no longer meets the requirements of the current conservation status. A. Population size reduction Survey data are insufficient to determine any population trends. (evidence of decline) Unable to assess B. Geographic range (B1) EOO <100 km2. Using Minimum Convex Polygon (MCP) the EOO is estimated as 4 km2, which was calculated by drawing a polygon (EOO and AOO, number of 2 locations and evidence of around the plants (0.2 km ) and rectifying to be no less than the decline) estimated AOO. * Note EOO and AOO figures do not include the new Subpopulation 2 as it has yet to be confirmed as the specimen location is vague and field validation has not been made. (B2) AOO <10 km2. The estimated AOO is 4 km2 using the 2 km x 2 km grid method. The mapped area of the single subpopulation is 0.2 km2 or 20 hectares. (a) Known from one general locality near Cascade. However, regarded as being two locations as the main threatening process (road maintenance) is restricted to those plants occurring within the road reserve, and excludes the plants in the adjacent nature reserve. (b) Continuing decline observed and projected: (iii) (v) The habitat within which the species occurs is highly threatened by road maintenance activities. Approximately 50 individuals were cleared as a result of road grading in 2014 at one site and potentially 5 plants at a second site. Road maintenance activities may directly and indirectly contribute to a decline in the area, extent and/or quality of habitat, and subsequently the number of mature individuals, in the known subpopulation. Meets criteria for Endangered: B1ab(iii,v)+2ab(iii,v) C. Small population size and Known from approximately 3,500 mature individuals. decline There are not enough survey data to determine any population (population size, distribution trends, despite observed decline in area of occupancy. and evidence of decline) Continuing decline has been projected in the number of mature individuals due to ongoing road maintenance. All recorded mature individuals (100%) in Subpopulation 1. Meets criteria for Vulnerable: C2(a)(ii) Page 3 of 7 D. Very small or restricted The species is known from approximately 3,500 mature individuals. population Estimated AOO is 4 km2 and number of locations is two. (population size) Meets criteria for Vulnerable D2 E. Quantitative analysis No information to assess. (statistical probability of extinction) Summary of assessment information EOO 0.2 km2 (MCP), AOO 4 km2 (2 km x 2 km Generation Unknown recalculated to 4 km2 so grid method). length as not to be less than the Extrapolated area of AOO. subpopulations 0.2 km2. No. locations 2 Severely fragmented Yes No Unknown No. subpopulations 2 (status of one No. mature individuals Approximately 3,500 to be confirmed) Percentage global population within Australia 100 Percentage population decline over 10 years or 3 generations Unknown Threats (detail how the species is being impacted) Threat Extent Impact (describe the threat and how it impacts on the species. (give details of impact on (what is the level of threat to Specify if the threat is past, current or potential) whole species or specific the conservation of the subpopulations) species) Road maintenance Individuals within road Severe Threats include grading, chemical spraying, reserves construction of drainage channels, and slashing of road vegetation. Approximately 50 plants were removed during road maintenance in 2014. Such activities also encourage the spread of weeds and disease. Past, current, future Altered fire regimes Whole population Potentially severe It is not certain how the species responds to fire but it is likely to be killed by fire and regenerate from seed. If fire frequency is increased the soil seed bank could be depleted before juvenile plants have reached maturity. Past, current and future Weeds Individuals within road Moderate Potential for weed invasion with inappropriate reserves roadside and fire management, which would cause competition with the plants and alter the fire characteristics of the habitat. Future Page 4 of 7 Management and Recovery Is there a Recovery Plan (RP) or Conservation Management Plan operational for the Yes No species? List all relevant recovery or management plans (including draft, in-preparation, out-of-date, national and State/Territory recovery plans, recovery plans for other species or ecological communities, or other management plans that may benefit or be relevant to the nominated species). List current management or research actions, if any, that are being undertaken that benefit the conservation of the species. Monitoring and surveys have been carried out to determine plant numbers and impact of threats; Threatened Flora markers have been installed within the road reserve at Subpopulation 1a; Liaison with the Shire of Esperance. List further recommended management or research actions, if any, that would benefit the conservation of the species. Please ensure that this section addresses all identified threats. Management Monitor subpopulation for evidence of grazing impacts, or changes in plant or site health; Collect seed from the subpopulation and store at Parks and Wildlife Threatened Flora Seed Centre; Liaise with Shire of Esperance to ensure the species is not accidentally damaged or destroyed during road maintenance, and the habitat is maintained in a suitable condition for the conservation of the species; Develop and implement a fire management strategy,