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JD Start D12-150 THREATENED SPECIES SCIENTIFIC COMMITTEE Established under the Environment Protection and Biodiversity Conservation Act 1999 The Minister approved this conservation advice and included this species in the Critically Endangered category, effective from 11/05/2018. Conservation Advice Eremophila sp. Narrow leaves (J. D. Start D12-150) Summary of assessment Conservation status Eremophila sp. Narrow leaves (J. D. Start D12-150) has been found to be eligible for listing in the Critically Endangered category as outlined in the attached assessment. Reason for conservation assessment by the Threatened Species Scientific Committee This advice follows assessment of information provided by Western Australia as part of the Common Assessment Method process, to systematically review species that are inconsistently listed under the EPBC Act and relevant state/territory legislation or lists. More information on the Common Assessment Method is available at: http://www.environment.gov.au/biodiversity/threatened/cam The information in this assessment has been compiled by the relevant state/territory government. In adopting this assessment under the EPBC Act, this document forms the Approved Conservation Advice for this species as required under s266B of the EPBC Act. Public consultation Notice of the proposed amendment and a consultation document was made available for public comment for 32 business days between 16 August 2017 and 29 September 2017. Any comments received that were relevant to the survival of the species were considered by the Committee as part of the assessment process. Recovery plan A recovery plan for this species under the EPBC Act is not recommended, because the Approved Conservation Advice provides sufficient direction to implement priority actions and mitigate against key threats. The relevant state/territory may decide to develop a plan under its equivalent legislation. Recommendations (i) The Committee recommends that the list referred to in section 178 of the EPBC Act be amended by including in the list in the Critically Endangered category: Eremophila sp. Narrow leaves (J. D. Start D12-150) (ii) The Committee recommends that there not be a recovery plan for this species. Threatened Species Scientific Committee 20 November 2017 Eremophila sp. Narrow leaves (J. D. Start D12-150) Conservation Advice Nomination/Proposal summary (to be completed by nominator) Current conservation status Scientific name: Eremophila sp. Narrow leaves (J.D. Start D12-150) (Previously known as Eremophila microtheca subsp. narrow leaves (J.D. Start D12-150)) Common name: None Family name: Scrophulariaceae 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? State / Territory in Date listed or Listing category i.e. Listing criteria i.e. Jurisdiction which the species assessed (or critically endangered B1ab(iii)+2ab(iii) occurs N/A) or ‘none’ International (IUCN Red List) National (EPBC Act) State / Territory 1. WA 2014 Critically Endangered B1ab(ii,iii,v)+B2ab(ii,iii,v) 2. 3. 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 nominated in 2014. 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: Assessment is consistent and criteria remains current. Eremophila experts Andrew Brown and Bob Chinnock have noted a number of morphological differences between Eremophila microtheca subsp. narrow leaves at Eneabba and the type of the species E. microtheca from east of Kalbarri. These include plant size, leaf length/shape, flower colour. In addition, molecular studies conducted in 2013 using nine microsatellite markers have shown plants in the Eneabba population to be genetically divergent from those found east of Kalbarri. Page 2 of 8 Brown considers the differences significant and has prepared a draft paper raising the phrase name Eremophila microtheca subsp. narrow leaves (J.D. Start D12-150) to species status. The taxon is now curated by the WA Herbarium as the phrase name Eremophila sp. Narrow leaves (J.D. Start D12-150). 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 B1ab(ii,iii,v)+B2ab(ii,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 Insufficient information is available to reliably show rate of decline as (evidence of decline) the subpopulations have not been regularly surveyed and changes in plant numbers partially attributed to the subspecies being a relatively short-lived disturbance opportunist. The main decline due to flooding was greater than 10 years past, and generation length is unknown. B. Geographic range (B1) Using Minimum Convex Polygon (MCP) the EOO is approximately 2 (EOO and AOO, number of 0.6 km which was calculated by drawing a polygon around the plants. locations and evidence of (B2) Area of Occupancy estimated as 8 km2 using the 2km x 2km grid decline) method. Area of occupied habitat is 0.0174 km2 or 1.74 hectares. (a) Known from one location with subpopulations severely fragmented as each site is an isolated area of remnant vegetation on the margins of winter-wet flats and lakes due to extensive clearing for agriculture. (b) Continuing decline observed and projected: (ii) (v) Flooding in 1999 resulted in a significant decline in the number of plants and area of habitat, with one subpopulation declining from 10,000 in 1992 to 16 in 2014. (iii) Ongoing threats to habitat condition and extent from road works, habitat degradation, poor recruitment, weeds, grazing and a drying climate. Meets criteria for Critically Endangered B1ab(ii,iii,v)+B2ab(ii,iii,v) C. Small population size and Known from 81 mature individuals in total. decline Before being surveyed in 2013/14, plant counts are only available (population size, distribution since the 1999 flood from 2003, some 10 years prior. Therefore and evidence of decline) insufficient information is available to reliably show current rate of decline as the subpopulations have not been regularly surveyed. 66 mature individuals (81%) in one subpopulation. Meets criteria for Endangered C2(a)(i). Page 3 of 8 D. Very small or restricted (D) There are approximately 81 mature individuals in total. population Meets criteria for Endangered D. (population size) E. Quantitative analysis No information to assess. (statistical probability of extinction) Summary of assessment information EOO 0.6 km2 (MCP) – AOO 8 km2 (2 km x 2 km Generation - calculated to 8 km2 grid), Mapped area length based on the AOO of occupied habitat estimation 0.0174 km2. No. locations 1 Severely fragmented Yes No Unknown No. subpopulations 2 No. mature individuals 81 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 (give details of impact on (what is the level of threat to species. Specify if the threat is past, current or whole species or specific the conservation of the potential) subpopulations) species) Flooding Whole population Catastrophic Flooding following substantial summer rainfall in 1999 led to significant plant deaths at both populations. Population 2 in particular declined significantly from over 10,000 plants in 1992 to 16 plants in 2014. Past, future Habitat degradation Whole population Severe Habitat on private property subject to scrub- rolling and grazing by stock. Past and present Weeds Whole population Severe Habitat of private property subpopulation comprises mostly introduced grasses. Weeds suppress early plant growth by competing with germinants for soil moisture, nutrients and light. They also increase the fire hazard due to the high fuel loads that are produced annually by many grass weed species. Slashing of road verges also promotes weeds. Past, current and future Page 4 of 8 Road and fenceline maintenance Whole population Severe Threats include grading, chemical spraying, construction of drainage channels and the slashing of roadside vegetation. Plants that occur along the boundary of a private property are threatened by fence maintenance. Past, current and future Altered fire regimes Whole population Severe The subspecies is relatively short-lived and requires infrequent fire to stimulate
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