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REGIONAL ECOSYSTEM ASSESSMENT
NOOSA COUNCIL OFFSET SITE
LAKE MACDONALD CATCHMENT,
NOOSA SHIRE
FOR NOOSA COUNCIL
Native Foresters
Natural Resource Management Consultants
Email: [email protected]
Mob: 0407 757 872
Document No: 220920-REA
Date: 20th September 2022
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Native Foresters
DISCLAIMER
The authors do not accept any form of liability, be it contractual, tortious, or otherwise, for the contents of this
document or for any consequences arising from its use or any reliance placed upon it. This report has been
compiled on the basis of existing literature, information, and a targeted survey. Native Foresters does not
undertake responsibility arising in any way to any persons in respect of the data, errors, or omissions arising,
through misinterpretation of information, negligence or otherwise, however caused. Native Foresters is an
independent consulting company undertaking projects in Natural Resource Management.
All work conducted as part of this survey was conducted under the DERM Scientific Purposes Permit number
WQA 0035991 and DEEDI Animal Ethics Committee number CA 2020/08/1398 and in accordance with the
relevant regulations.
STUDY TEAM
Simon McVerry (BASc – NRM) - Project director
Tim O’Reilly (BA/BSc Botany) – Ecologist - Field work, RE Assessment
Larissa Boundy (MSc) – Ecologist -Field work, RE Assessment
Pru McIntyre (BEnSc) – Ecologist – Field work, RE Assessment, GIS mapping and reporting
DOCUMENT CONTROL
Project: Noosa Council - Offset Site RE Assessment
Document: Regional Ecosystem Assessment – Noosa Council Offset Site, Lake Macdonald
Catchment
Document No.: 220920-REA
Client: Noosa Council
Project Manager: Cody Johnston
ACKNOWLEDGEMENTS
The authors would like to thank Tim Ryan (Queensland Herbarium) for their advice and
assistance throughout the duration of this project.
Regional Ecosystem Assessment – Noosa Council Offset Site – Lake Macdonald Catchment 1
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Table of Contents
1.0 INTRODUCTION .................................................................................................. 3
1.1 Background ....................................................................................................... 3
1.2 Objectives ......................................................................................................... 3
1.3 Relevant Legislation .......................................................................................... 4
1.4 Project Outline .................................................................................................. 5
2.0 Offset Site ............................................................................................................. 5
2.1 Site Description ................................................................................................. 5
2.2 Offset Restoration Plan (ORP) .......................................................................... 6
2.2.1 Offset Legislation ....................................................................................... 6
2.2.2 Requirements of ORP ................................................................................ 6
2.2.3 ORP Reference Sites ............................................................................... 10
3.0 RE KIT ASSESSMENT ....................................................................................... 10
4.0 METHODOLOGY ............................................................................................... 12
4.1 Desktop Assessment ...................................................................................... 12
4.2 Field Assessment ............................................................................................ 12
4.3 RE Kit Assessment Methodology .................................................................... 12
4.3.1 Vegetation Structure - Benchmark Attributes ............................................... 13
4.3.2 Assessment of Characteristic Species ......................................................... 14
5.0 RESULTS – OFFSET SITE ................................................................................ 15
5.1 Offset Site Vegetation RE Assessment ........................................................... 15
5.2 Offset Site - OA’s Condition Summary ............................................................ 20
6.0 Summary & Recommendations .......................................................................... 23
7.0 REFERENCES ................................................................................................... 25
APPENDIX A – APPROVED LAKE MACDONALD OFFSET RESTOATION PLAN,
NOOSA COUNCIL ........................................................................................................ 26
APPENDIX B – EXAMPLE RE ASSESSMENT KIT DATA SHEETS ............................. 92
Figures
Figure 1: Location of Offset Areas, reference sites and RE Assessment Kit plot sites in
western section ............................................................................................................... 8
Figure 2: Location of Offset Areas, reference sites and RE Assessment Kit plot sites in
eastern section ................................................................................................................ 9
Tables
Table 1: Summary of Offset Areas within the Lake Macdonald offset site........................ 5
Table 2: Vegetation communities desired on Offset Site taken from ORP report (NC, 2006)
........................................................................................................................................ 7
Table 3: Reference Site Remnant Vegetation data, taken from Table 2 – Summary of
reference Site Information from ORP report (NC, 2006) (Appendix A) ........................... 10
Table 4: Reference sites RE Benchmarks for remnant vegetation ................................. 13
Table 5: Crown cover estimate table (DES, 2022) ......................................................... 14
Table 6: Summary of RE Kit Assessment results .......................................................... 16
Table 7: Summary of ORP Offset Areas (OA's) RE Assessment Results ...................... 20
Regional Ecosystem Assessment – Noosa Council Offset Site – Lake Macdonald Catchment 2
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Native Foresters 1.0 INTRODUCTION Native Foresters has been commissioned by Noosa Council (NC), to conduct an assessment of vegetation communities present within an established environmental offset site at Lake Macdonald, adjacent to Cooroy-Noosa Road, approximately 2.2 to 6km from Cooroy (Latitude: -26.4047/ Longitude: 152.5478), in order to assess the vegetation condition in relation to its remnant status. This report summarises the findings of the Regional Ecosystem (RE) assessment undertaken in July 2022. It provides a summary of the current offset vegetation condition with regard to its remnant status prepared in accordance with relevant guidelines, and where relevant for the project, documents supporting the change of vegetation to remnant status have being included for submission to Department of Environment and Science (DES). 1.1 Background NC are currently delivering a remnant vegetation Offset Restoration Plan (ORP) with the aim of restoring a minimum of 24ha of remnant vegetation at an environmental offset site secured in 2005. The offset site which includes 27 individual sites, otherwise referred to as the Offset Areas (OA), covers a total area of 39.1ha which covers parts of 20 allotments surrounding the upper sections of Lake Macdonald, located within the Noosa Shire hinterland. The ORP which was submitted for assessment in 2005 is due to be delivered in June 2026, forms part of the approval conditions to offset the significant residual impacts on a Matter of State Environmental Significance (MSES) which was the clearing of 20.6ha of remnant vegetation associated with the expansion of the Noosa Landfill & Resource Recovery Centre (RRC), located at 561 Noosa-Eumundi Road, (Lot 77 SP298776). Although originally under NC tenure, changes in the ownership of water assets mandated by state government resulted in Lake Macdonald and the land parcels which contain the OA’s being under SEQ Water tenure. SEQ Water is working in collaboration with NC to enable delivery of the offset project and is negotiations are continuing regarding undertaking a PMAV process or a voluntary declaration to allocate the OA’s within allotments under their tenure to Category A regulated vegetation - a conservation offset. NC are currently in the final phases of the offset timeframe and require assessment of vegetation to determine progress of the offset delivery. 1.2 Objectives The objective of the RE assessment is to investigate and report on the present condition of vegetation within the OA’s in relation to its remnant status. Field data obtained during the assessment will inform documents submitted to DES and the QLD Herbarium to support a change in remnant status where relevant. The objectives of this project are as follows: Regional Ecosystem Assessment – Noosa Council Offset Site – Lake Macdonald Catchment 3
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• To quantify the condition of the vegetation at 27 Offset Areas (OA’s) within the
offset site at Lake Macdonald to determine remnant status based on a number of
vegetation structure attributes including canopy height and cover, and species
composition, undertaken in compliance with the requirements of the Queensland
Herbarium Regional Ecosystem Assessment Kit, Version 1.0, (DES, 2022);
• To determine if vegetation within the OA’s meets the benchmark requirements to
be mapped as remnant under QLD state RE mapping, undertaken in compliance
with the requirements of the ‘Methodology for surveying and mapping regional
ecosystems and vegetation communities in Queensland’ (Neldner et al. 2022); and
• To comment on the progress of the Noosa Council Offset Restoration Plan (ORP)
in relation to current vegetation condition within the offset area, and to provide
relevant RE Assessment Kit documents to be submitted to DES (assessed through
QLD Herbarium) to support a change in remnant status where appropriate. RE
Assessment Kit information, including raw data and GIS files to support a change
of mapped vegetation within the offset site to remnant status where relevant, has
been included as a separate document - RE Assessment Kit, Noosa Council Lake
Macdonald Offset Site, document number: 220920-REA-D.
1.3 Relevant Legislation
To evaluate the RE condition and status of vegetation across the offset site the following
legislation and guidelines were reviewed:
Legislation -
• Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act) –
Commonwealth
• Nature Conservation Act 1992 (NCA) – State
o Nature Conservation (Plants) Regulation 2020
• Planning Act 2016 and Planning Regulation 2017 – State
• Vegetation Management Act 1999 (VMA) – State
• NR&M Interim Policy for Vegetation Management Offsets 3 October 2005 -
(Superseded by the Environmental Offsets Act 2014 and Environmental Offsets
Regulation 2014 – State).
Guidelines -
• Regional Ecosystem Assessment Kit, Version 1.0, Queensland Herbarium,
Department of Environment and Science (DES), 13 June 2022 - State
• ‘Methodology for surveying and mapping regional ecosystems and vegetation
communities in Queensland’ (Neldner et al. 2022) - State
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1.4 Project Outline
This project involves obtaining RE vegetation benchmark data from remnant vegetation
reference sites detailed in the ORP, to compare to field data assessment of vegetation
condition within OA’s. Further information on the ORP can be found below in section 2.2.
Assessments using the Regional Ecosystem Assessment Kit, Version 1.0 (DES, 2022)
determine if an area should have the RE type or status of vegetation (i.e., regrowth to
remnant) updated within the State RE mapping (DES, 2022). The field data obtained will
verify the status and condition of vegetation within the OA’s which will inform applications
to DES to have suitable areas updated to remnant status within QLS State RE mapping.
Further information on the RE Assessment Kit is shown below in section 3.0.
2.0 Offset Site
2.1 Site Description
The offset receiving site is comprised of 27 OA’s spread across 20 SEQ Water owned
allotments and situated surrounding Lake Macdonald within proximity to Cooroy-Noosa
Road (Latitude -26.4047/ Longitude 152.5478). OA’s are situated surrounding the upper
(southern) reaches of Lake Macdonald and upon small islands as shown in Figure 1.
Table 1 below shows a summary of the offset site area, with allotments and associated
OA number, the individual and total area of the OA’s as well as their location.
Table 1: Summary of Offset Areas within the Lake Macdonald offset site
Offset Site Summary
Lot OA Number OA Area (ha) Location
1RP168291 1 0.26 Frogmouth Lane, Cooroy-
MAPPED REMNANT
100SP167229 & 2 0.48 Frogmouth Lane, Cooroy-
1RP171784 MAPPED REMNANT
1RP193959 3 0.42 Gumtree drive/ Pine Tree
4 6.23 Drive, Cooroy
9SP143416 5 0.88 Gumtree drive, Cooroy
6 0.61
3RP167264 7 0.55 Opposite Hayward Road
8 2.35
9 1.61
3RP138769 10 3.5 Opposite Hayward Road
6RP134347 11 3.41 Jabiru bird hide, Grange
1RP160987 12 0.25 Road
2RP149832
3RP134347
1RP164020 13 0.79 North bank of lake,
opposite Grange Road
2RP164019 14 1.36 Within lake near to Sivyers
15 0.4 Road, Tinbeerwah
2RP1627478 17 2.29 North bank of lake
1RP906937
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Offset Site Summary
Lot OA Number OA Area (ha) Location
1RP906937 16 2.47 Within lake near to Sivyers
18 0.52 Road, Tinbeerwah
19 0.18
20 0.82
21 0.21
22 0.13
1RP170398 23 5.29 Dath Henderson Road
24 0.52 Park, Worba Lane
27 1.52
7RP214051 25 0,3 Dath Henderson Road
26 1.73 Park, Worba Lane
Total Area within OA’s 39.1ha
2.2 Offset Restoration Plan (ORP)
2.2.1 Offset Legislation
Offsets require certain outcomes to be achieved through the delivery of a plan to reduce
and/or negate impacts to MSES. This offset was developed under the NR&M Interim
Policy for Vegetation Management Offsets 3 October 2005. This legislation has been
superseded by the QLD Environmental Offsets Act 2014.
Part of criteria for landfill clearing was development of a vegetation Offset Restoration Plan
(ORP). The NC document Remnant Vegetation Restoration Plan, Lake Macdonald
Catchment was approved by Queensland Government Department of Natural Resources,
Mines and Energy (NRME) on 19/01/2006 and details the processes and management
council will enact to restore a minimum of 24ha of vegetation due to be finalised by 2026.
The approved Vegetation Offset Restoration Plan for Lake Macdonald is shown in
(Appendix A) (NC, 2006).
2.2.2 Requirements of ORP
The aim of the ORP was to achieve remnant status of a minimum of 24ha of vegetation
within the OA’s in terms of canopy height and cover, and species composition by June
2026. This included 19 ha of Endangered listed Regional Ecosystems (RE) 12.3.1 and 5
ha of Of Concern RE 12.3.2. NC has also aimed to restore up to 11.1ha of additional;
Least Concern RE 12.3.11. The required vegetation communities are summarised in
Table 1.
At the establishment of the offset site in 2006, the OA’s were not mapped under Vegetation
Management mapping. According to the ORP, the sites comprised mainly non-remnant
and regrowth vegetation dominated by previously cleared open grassland and regrowth
riparian vegetation (Cleared grassland, pine plantations and regrowth areas used for
grazing) – all with recruitment of native species and invasive weeds.
Regional Ecosystem Assessment – Noosa Council Offset Site – Lake Macdonald Catchment 6
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Table 2: Vegetation communities desired on Offset Site taken from ORP report (NC, 2006)
RE type VMA status RE Description Structure Required Area (ha) Location of RE type
Gallery rainforest Dense 19
Occurs directly
(Complex notophyll vine
12.3.1a Endangered fringing watercourses
forest.) on alluvial plains
and lake
(DES, 2022).
Mid-dense 5 Occurs fringing
Eucalyptus grandis tall watercourses
12.3.2 Of Concern open forest on alluvial interspersed with
plains (DES, 2022). 12.3.1a.
Eucalyptus tereticornis +/- Mid-dense 11.1
Eucalyptus siderophloia, additional potential Occurs in low-lying
Corymbia intermedia open revegetation area areas adjacent to the
12.3.11 Of Concern
forest on alluvial plains lake that are prone to
usually near coast (DES, waterlogging
2022).
24ha
Total Area
(Additional 11.1ha
proposed = 35.1ha)
Vegetation communities in RE 12.3.1 include:
12.3.1a: Complex notophyll vine forest. Typical canopy species include Castanospermum australe, Elaeocarpus grandis, Grevillea robusta, Cryptocarya obovata, Beilschmiedia
obtusifolia, Dysoxylum mollissimum subsp. molle, Pseudoweinmannia lachnocarpa, Argyrodendron trifoliolatum, Planchonella australis, Ficus watkinsiana, F. macrophylla forma
macrophylla, Aphananthe philippinensis, Toona ciliata and Syzygium francisii. Emergent Eucalyptus grandis or Lophostemon confertus may occur. Waterhousea floribunda and
Tristaniopsis laurina may occur on banks of stream channels. Typical sub canopy species include Cryptocarya triplinervis, Archontophoenix cunninghamiana, Endiandra pubens, Arytera
divaricata, Syzygium moorei and Macadamia spp. Occurs on Quaternary alluvial plains and channels in areas of high rainfall (generally >1300mm). Riverine (DES, 2022).
Regional Ecosystem Assessment – Noosa Council Offset Site – Lake Macdonald Catchment 7
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Figure 1: Location of Offset Areas, reference sites and RE Assessment Kit plot sites in western section
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Figure 2: Location of Offset Areas, reference sites and RE Assessment Kit plot sites in eastern section
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2.2.3 ORP Reference Sites
Remnant status was assessed by comparison of the vegetation condition against a local
remnant vegetation reference site to compensate for regional differences within a single
RE type. The local remnant vegetation reference site summary is shown below in Table
2.
Table 3: Reference Site Remnant Vegetation data, taken from Table 2 – Summary of reference
Site Information from ORP report (NC, 2006) (Appendix A)
Reference Species Dominant/
Canopy Canopy
Site RE type Richness Characteristic
Height (m) Cover (%)
Number (no.) Species
Waterhousea
1&2 12.3.1a 18, 20 85, 85 41, 45 floribunda
Flindersia schottiana
Eucalyptus grandis
5 12.3.2 30 65 52 Lophostemon confertus
Syncarpia glomulifera
Eucalyptus tereticornis
Corymbia intermedia
6 12.3.11 25 60 42 Lophostemon
suaveolens
3.0 RE KIT ASSESSMENT
The Regional Ecosystem (RE) Assessment of the offset areas (OA) was undertaken
following the methods outlined in the Queensland Herbarium Regional Ecosystem
Assessment Kit Version 1.0, (DES, 2022) and in conjunction with the ‘Methodology for
surveying and mapping regional ecosystems and vegetation communities in Queensland’
(Neldner et al. 2022).
The RE Assessment Kit states that:
‘A full assessment of regional ecosystems at a site requires information on
species, structure (height and crown cover by strata), geology, soils and landform
and other information detailed in the survey and mapping method (Neldner et al.
2022).
However, verification of changes to an existing regional ecosystem map need only
require enough information to justify the particular change. For example a change
to remnant status may only require detailed information on canopy height
compared to a reference site’ (DES, 22).
Sheets A to E in the RE Kit are used assess the regional ecosystem mapping for an area,
with only certain sheets relevant to a change in remnant status.
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Sheets required for change in remnant status-
• Summary of Assessment Area: (Sheet A) location of the site and the person
making the assessment, a list of the imagery used to assess the area as well
as a concise summary of conclusions reached preferably linked to an image:
for example, “Areas A and B: remnant to non-remnant; Area C: RE code
change”.
• Summary of Assessment Method: (Sheet B) Assessment survey
method/details and a brief outline of the rationale and method of survey to
establish the validity of the assessment and includes details of clearing history
and survey method used to assess the area.
• Vegetation Structure Site: (Sheet C) is used to record information about the
vegetation structure (growth form, height, and cover) of the EDL, for use in the
verification of the remnant status of the vegetation. The data recorded on this
part of Sheet C for a disturbed site can be compared to that recorded on the
Reference site data in order to determine remnant status. (50/70% rule and
Characteristic Species).
• Reference Site: (Sheet E) completed for reference sites that are required when
quantitative comparison of species, height, and cover of an assessment area
to the normal height and cover of the vegetation is required. (Sheet C normal
height and cover measurements are determined by comparing the assessment
to a reference site) DES, 2022).
Vegetation structure is measured following the ‘Methodology for surveying and mapping
regional ecosystems and vegetation communities in Queensland’ (Neldner et al. 2022).
The guideline states that:
The predominant canopy or ecologically dominant layer (EDL) is defined as the
stratum of the vegetation which contains the most above ground biomass. The
EDL can be defined in terms of growth form, height, cover density and species.
For existing vegetation to be remnant, the EDL of the existing vegetation is to:
(a) cover more than 50% of the normal EDL; and
(b) average more than 70% of the mean height of the normal EDL; and
(c) be made up of species characteristic of the normal EDL. (DES, 2022)
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4.0 METHODOLOGY
4.1 Desktop Assessment
Comprehensive desktop reviews of the ecological and vegetative attributes of the offset
areas were undertaken. The reviews consisted of searches of Local and State
Government planning instruments, mapping, and databases, as well as relevant academic
literature. Sources of information included:
State-wide Regional ecosystem mapping and supporting information
Queensland Government (des.qld.gov.au) or viewed online-
o Regulated Vegetation Management Map (DES, 2022)
o Pre-clear mapping
Historical imagery- aerial photography
QLD globe layers
All other relevant information relating to the offset receiving site was reviewed, where
available, including existing reports and relevant legislation. A field plan was devised
following desktop assessment to determine suitable locations for plot sites to survey the
vegetation.
4.2 Field Assessment
Field assessments were undertaken by qualified and experienced assessors. The Native
Foresters flora survey team consisted of: Pru McIntyre – lead botanist, Tim O’Reilly –
senior field botanist and Larissa Boundy – assistant field botanist. Field methods included
traversing OA’s by foot and accessing water-bound sites by kayak.
4.3 RE Kit Assessment Methodology
The Regional Ecosystem (RE) Assessment of the offset areas (OA) was undertaken
following the methods outlined in the Queensland Herbarium Regional Ecosystem
Assessment Kit Version 1.0, (DES, 2022) and in conjunction with the ‘Methodology for
surveying and mapping regional ecosystems and vegetation communities in Queensland’
(Neldner et al. 2022).
Remnant status was assessed by comparison of the vegetation condition against a local
remnant vegetation reference site, which DES (2022) states gives a more accurate
assessment of the vegetation due to the variation of structural and species characteristic
between regions within a single RE type.
Reference site benchmark data shown above in section 2.2.3 was obtained from table 2;
and Appendix 3 of the ORP report (NC, 2005) (Appendix A), which were originally
assessed in accordance with the Interim Policy for Vegetation Offset Management,
(Queensland Government, 2005) and in align with QLD Government RE Benchmark
values for South-east Queensland for Regional Ecosystems 12.3.1 (two reference sites),
12.3.2 and 12.3.11 as well as two regrowth sites.
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Reference site data was used to obtain characteristic species of the RE’s and benchmarks
for 70% of the EDL canopy height and 50% of the EDL canopy cover for comparison
against restored vegetation in the OA’s.
The established benchmarks for the reference sites for RE 12.3.1, 12.3.2 and 12.3.11
including dominant canopy species for each RE type are shown below in Table 4. A full
list of characteristic species from the reference sites, obtained during the development of
the ORP are included in Appendix A.
Table 4: Reference sites RE Benchmarks for remnant vegetation
REMNANT VEGETATION RE TYPE
BENCHMARKS
12.3.1a 12.3.2 12.3.11
Canopy
>50% of Height (m)
14 21 17.5
>70% of Cover (%)
42.5 32.5 30
Eucalyptus tereticornis
Waterhousea floribunda Eucalyptus grandis Corymbia intermedia
Characteristic species Flindersia schottiana Lophostemon confertus Lophostemon
Syncarpia glomulifera suaveolens
Plot sites were used to assess small areas of vegetation that are representative of a larger
homogenous area. Based on the desktop assessment through GIS (ArcGIS pro, v. 3.0) of
vegetation cover mapped on QLD Globe within the offset receiving site, it was determined
that 10 plot sites were required over 6 homogenous areas to capture the variation in
ecosystem types, condition, and status of vegetation within the OA’s.
Plot site assessment methodology followed the RE Assessment Kit Version 1.0, (DES,
2022) and (Neldner et al. 2022), and involved setting up a plot 50mx10m within
representative areas of the OA’s and using a transect method to assess canopy species,
median canopy height of the EDL and median canopy cover % of the EDL.
4.3.1 Vegetation Structure - Benchmark Attributes
Tree canopy heights were measured using the clinometer method as per the ‘Methodology
for surveying and mapping regional ecosystems and vegetation communities in
Queensland’ (Neldner et al. 2022).
Canopy cover was measured using the PFC method as per section 4 of RE Assessment
Kit Version 1.0, (DES, 2022). Crown cover is measured as the percentage of a site within
the vertical projection of the crowns taken as opaque. For remnant/non-remnant changes
where crown cover is not a determining attribute, is the appropriate scenario where
regrowth is clearly denser than the normal canopy but may not yet attained 70% of the
vegetation’s normal height is to use a crown cover estimate method.
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Native Foresters Table 5: Crown cover estimate table (DES, 2022) 4.3.2 Assessment of Characteristic Species For existing vegetation to be remnant, the EDL of the existing vegetation is to be made up of species characteristic of the normal EDL (DES, 2022). From the ‘Methodology for surveying and mapping regional ecosystems and vegetation communities in Queensland’ (Neldner et al. 2022). The guideline states that sub-dominant EDL canopy species from the reference site data can be assessed as dominant species for an RE if dominant species are present in low density and if EDL canopy structure benchmarks meet the criteria. During field work canopy species within the plot sites were identified and recorded on Queensland Herbarium Regional Ecosystem Assessment Kit (DES, 2022) data sheets for comparison against dominant and characteristic species from each RE reference site. Following field data collection and analysis, RE Kit Assessment datasheets were compiled in preparation to be submitted with raw datasheets and relevant GIS files to the Queensland Herbarium for review in relation to a change of remnant status. Regional Ecosystem Assessment – Noosa Council Offset Site – Lake Macdonald Catchment 14
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Native Foresters 5.0 RESULTS – OFFSET SITE 5.1 Offset Site Vegetation RE Assessment For the 3 attributes measured during the offset site vegetation RE Assessment, results were compared with the reference site RE benchmark value data for that ecosystem. Reference site benchmarks for required RE 12.3.1, 12.3.2 and 12.3.11 were obtained from the Noosa Council ORP report for Lake Macdonald, approved in 2006. The percentage of the RE benchmark calculated corresponds to requirements in the Queensland Herbarium Regional Ecosystem Assessment Kit Version 1.0, (DES, 2022) and in conjunction with the ‘Methodology for surveying and mapping regional ecosystems and vegetation communities in Queensland’ (Neldner et al. 2022). Results of the RE Assessment for each plot site within the OA’s and reference site benchmark data are given in Table 6 below. Where vegetation within OA’s was homogenous in desktop analysis, these areas were grouped together, and two representative plot sites were chosen that were characteristic of the total grouped OA’s vegetation. The raw data for RE Assessments within OA 3 to 27 undertaken at Plot Sites A to K from which the summary data is derived is provided in the document submitted in conjunction with report - RE Assessment Kit, Noosa Council Offset Site, document no. 220920-REA- D. It is noted that RE Assessments were only undertaken for OA's that are not currently mapped as remnant status, therefore OA's 1 & 2 are not included in the assessment (Refer Figure 1). Of note is one OA (number 13) on the northern bank of the lake which did not align with the required RE types as it contained a sedimentary land zone rather than an alluvium one, however it did meet the requirements for remnant status, as shown below and does increase the amount of listed Of Concern RE in the offset site. This vegetation aligned with RE 12.9-10.1 – Tall open forest on sedimentary rocks, usually coastal. Canopy species include Eucalyptus resinifera, E. grandis, E. robusta, Corymbia intermedia +/- E. microcorys, Melaleuca quinquenervia, Syncarpia glomulifera subsp. glomulifera and Lophostemon confertus. (DES, 2022) QLD Government RE Benchmark values for SEQ for RE 12.9-10.1 are shown below in table 6. It is noted that the table below does not include AO’s 1 & 2 currently mapped as remnant, or AO’s 15, 17, 18, 19 which remain regrowth as cover % benchmark clearly not met on desktop or in field. Regional Ecosystem Assessment – Noosa Council Offset Site – Lake Macdonald Catchment 15
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Table 6: Summary of RE Kit Assessment results
Remnant Vegetation
Reference Sites Re Type
Benchmarks
(From ORP Reference Sites, NC,
12.3.1a 12.3.2 12.3.11
2006)
Canopy
>50% of Height (m)
14m 21m 17.5m
>70% of Cover (%)
42.5% 32.5% 30%
Eucalyptus grandis Eucalyptus tereticornis
Waterhousea floribunda
Characteristic species Lophostemon confertus Corymbia intermedia
Flindersia schottiana
Syncarpia glomulifera Lophostemon suaveolens
Regrowth site species- Acacia melanoxylon, Lophostemon confertus & L. suaveolens, Corymbia intermedia, E. tereticornis
Offset Areas
Measured Benchmarks Within
Plot Site & OA Re Type
Plot Site
A & B (OA = 3, 4, 5 & 6 )
Includes 0.5ha regrowth 12.3.11 in
12.3.1a 12.3.2 12.3.11
centre of OA 4.
(Refer table 7)
Canopy
Median Height (m)
14.5 20-22 -
Percentage of Cover (%)
90 80 -
Waterhousea floribunda
Eucalyptus grandis
Flindersia schottiana
Lophostemon confertus
Elaeocarpus obovatus
Characteristic species Syncarpia glomulifera -
Glochidion ferdinandi
Acacia melanoxylon
Melicope elleryana
Eucalyptus robusta
Alphitonia excelsa
Percentage of each RE type in OA’s 70% 30% -
It was determined that native vegetation within AO - 3, 4, 5 & 6 meets the criteria for remnant status– 12.3.1a/12.3.2 (70%/30%)
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Measured Benchmarks within
Plot Site & OA RE Type
Plot Site
C&D
(AO = 9, 10, 11, 12) (Refer table 12.3.1a 12.3.2 12.3.11
7)
Canopy
Median Height (m)
15m - 18-19m
Percentage of Cover (%)
90% - 75%
Waterhousea floribunda
Melaleuca quinquenervia
Flindersia schottiana
Eucalyptus tereticornis
Characteristic species Alphitonia excelsa -
Corymbia intermedia
Glochidion ferdinandi
Lophostemon suaveolens
Melicope elleryana
Percentage of each RE type in OA’s 30% - 70%
It was determined that native vegetation within AO - 9, 10, 11 & 12 meets the criteria for remnant status– 12.3.11/12.3.1a (70%/30%)
Measured Benchmarks within
Plot Site & OA RE Type
Plot Site
E
12.3.1a 12.3.2 12.3.11
(AO = 14) (Refer table 7)
Canopy
Median Height (m)
- 21m 19m
Percentage of Cover (%)
- 75% 70%
Eucalyptus grandis
Melaleuca quinquenervia
Lophostemon confertus
Eucalyptus tereticornis
Characteristic species - Syncarpia glomulifera
Corymbia intermedia
Acacia melanoxylon
Lophostemon suaveolens
Eucalyptus robusta
Percentage of each RE type in OA’s - 70% 30%
It was determined that native vegetation within AO - 14 meets the criteria for remnant status– 12.3.2/12.3.11 (70%/30%)
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Measured Benchmarks within
Plot Site & OA RE Type
Plot Site
F&G
12.3.1a 12.3.2 12.3.11
(OA = 16, 20, 21 & 22 & 26)
(Refer table 7)
Canopy
Median Height (m)
16 22 19
Percentage of Cover (%)
80% 70% 70%
Waterhousea floribunda
Eucalyptus grandis Melaleuca quinquenervia
Flindersia schottiana
Lophostemon confertus Eucalyptus tereticornis
Elaeocarpus obovatus
Characteristic species Syncarpia glomulifera Corymbia intermedia
Alphitonia excelsa
Acacia melanoxylon Lophostemon suaveolens
Melicope elleryana
Eucalyptus robusta
Glochidion ferdinandi
Percentage of each RE type in OA’s 60% 20% 20%
It was determined that native vegetation within AO - 16, 20, 21, 22 & 26 meets the criteria for remnant status– 12.3.1a/12.3.2/12.3.11 (60%/20%/20%)
Measured Benchmarks within
Plot Site & OA RE Type
Plot Site
H&I
12.3.1a 12.3.2 12.3.11
(OA = 7, 8, 23. 24, 25, & 27)
(Refer table 7)
Canopy
Median Height (m)
17m - 21m
Percentage of Cover (%)
95% - 75%
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Waterhousea floribunda
Melaleuca quinquenervia
Flindersia schottiana
Eucalyptus tereticornis
Elaeocarpus obovatus
Characteristic species - Corymbia intermedia
Alphitonia excelsa
Lophostemon suaveolens
Melicope elleryana
Glochidion ferdinandi
70%
Percentage of each RE type in OA’s - 30%
(Note - OA 25 = 100%)
It was determined that native vegetation within AO - 7, 8, 23, 24, 25 & 27 meets the criteria for remnant status– 12.3.1a/12.3.11 (70%/30%)
Measured Benchmarks within
Plot Site & OA RE Type
Plot Site
J Required Benchmark
12.9-10.1* (From QLD RE Benchmark values
(OA = 13) (Refer table 7) (DES, 2022)
Canopy
Median Height (m)
23m >70% of 30m = 21m
Percentage of Cover (%)
75% >50% of 85% coverage = 42.5%
Eucalyptus resinifera
Eucalyptus grandis
Eucalyptus robusta
Corymbia intermedia
Characteristic species
Lophostemon suaveolens
Lophostemon confertus
Syncarpia glomulifera
Percentage of each RE type in OA’s 100%
It was determined that native vegetation within AO - 13 meets the criteria for remnant status– 12.9.10.1 (100%)
*Note – This AO does not align with required Land Zone 3 (alluvium) as it is located on a steep scarp adjacent to the lake that is consistent with the mapped Land Zone 9-10 of sedimentary
rocks. This RE is listed as Of Concern. See table 7 for further information.
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5.2 Offset Site - OA’s Condition Summary
Generally, vegetation throughout the offset site is in good ecological condition, with RE types consistent with revegetation plan aims,
and some encroachment of 12.3.11 in low lying areas directly adjacent to Lake Macdonald. The mixed nature of the revegetation
growth has led to some areas lacking the distinct characteristics of one single RE, and as such the majority of OA’s have been assessed
as containing heterogeneous ecosystems.
Changes in council structure associated with amalgamation and then subsequent de-amalgamation have impeded the delivery of the
offset project in some instances, however generally the planting and maintenance of sites has been undertaken across the OA’s, with
natural regeneration and recent high annual rainfall favouring site growth and development to remnant status. OA’s 17,18 and 19 were
not able to be progressed due to access issues associated with adjoining private properties.
Scattered weedy incursions primarily composed of Camphour laural, lantana and pasture grasses were recorded in all OA’s and plot
sites, and targeted weed maintenance is required throughout the offset sites to ensure non-native species do not become established
in the understorey of OA vegetation. Large woody species, however, were in relatively low abundance and were not deemed to pose
an ecological threat to the rehabilitation of the vegetation within the OA’s to remnant status.
The offset site RE Assessment – OA’s condition summary in relation to the Noosa Council ORP report is provided in Table 9.
Table 7: Summary of ORP Offset Areas (OA's) RE Assessment Results
Area of RE type within the OA Total area of AO
Assessed RE- remnant Total area of (Relative to % of dominance e.g., 70/30%) that meets
OA Ground truthed RE types
status OA remnant status
12.3.1a 12.3.2 12.3.11 (ha)
12.3.1a
1 Currently mapped remnant 0.26 0.26 - - 0.26
(100%)
12.3.1a
2 Currently mapped remnant 0.48 0.48 - - 0.48
(100%)
12.3.1a/12.3.2
3 Remnant 0.42 0.294 0.126 - 0.42
(70/30%)
12.3.1a/12.3.2
4 (70/30%) Remnant/Regrowth 6.23 4.011 1.719 0.5 (regrowth) 5.73
12.3.11 (regrowth)
5 12.3.1a/12.3.2 Remnant 0.88 0.616 0.264 - 0.88
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Native Foresters Area of RE type within the OA Total area of AO ) 9 j 0; OA Ground truthed RE types Assessed RE- remnant Total area of (Relative to % of dominance e.g., 70/30%) that meets status OA remnant status 12.3.1a 12.3.2 12.3.11 (ha) (70/30%) 12.3.1a/12.3.2 6 (70/30%) Remnant 0.61 0.427 0.183 - 0.61 12.3.1a/12.3.11 7 (70/30%) Remnant 0.55 0.385 - 0.165 0.55 12.3.1a/12.3.11 8 (70/30%) Remnant 2.35 1.645 - 0.705 2.35 12.3.11/12.3.1a 9 (70/30%) Remnant 1.61 0.483 - 1.127 1.61 12.3.11/12.3.1a 10 (70/30%) Remnant 3.5 1.05 - 2.45 3.5 12.3.11/12.3.1a 1 (70/30%) Remnant 3.41 1.023 - 2.387 3.41 12.3.11/12.3.1a 12 (70/30%) Remnant 0.25 0.075 - 0.175 0.25 12.9-10.1 0.79 13 (100%) Remnant 0.79 - - - (RE 12.9-10.1) 12.3.2/12.3.11 14 (70/30%) Remnant 1.36 - 0.952 0.408 1.36 15 12.3.11 Regrowth 0.41 - - - - 12.3.1a/12.3.2/12.3.11 16 (60/20/20%) Remnant 247 1.482 0.492 0.492 2.47 17 12.3.1a/12.3.11 Regrowth 2.29 - - - - 18 12.3.11 Regrowth 0.52 - - - - 19 12.3.11 Regrowth 0.18 - - - - 12.3.1a/12.3.2/12.3.11 20 (60/20/20%) Remnant 0.82 0.492 0.164 0.164 0.82 12.3.1a/12.3.2/12.3.11 0.21 21 (60/20/20%) Remnant 0.21 0.126 0.042 0.042 Regional Ecosystem Assessment — Noosa Council Offset Site - Lake Macdonald Catchment 21
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Area of RE type within the OA Total area of AO
Assessed RE- remnant Total area of (Relative to % of dominance e.g., 70/30%) that meets
OA Ground truthed RE types
status OA remnant status
12.3.1a 12.3.2 12.3.11 (ha)
12.3.1a/12.3.2/12.3.11
22 Remnant 0.13 0.078 0.026 0.026 0.13
(60/20/20%)
12.3.1a/12.3.11
23 Remnant 5.29 3.703 - 1.587 5.29
(70/30%)
12.3.1a/12.3.11
24 Remnant 0.52 0.364 - 0.156 0.52
(70/30%)11
12.3.1a
25 Remnant 0.30 0.30 - - 0.30
(100%)
12.3.1a/12.3.2/12.3.11
26 Remnant 1.73 1.038 0.346 0.346 1.73
(60/20/20%)
12.3.1a/12.3.11
27 Remnant 1.52 1.064 - 0.456 1.52
(70/30%)
39.09 19.396 4.314 10.686 35.19
Total area that meets remnant status
benchmarks within OA’s
(18.656ha not (Includes OA 13
currently = 0.79ha)
remnant)
Total area required (ha) 24 19 5 11.1 24
additional (Plus, additional
revegetation 11.1ha)
Total area that does not meet criteria includes AO’s 15, 17, 18, 19 & 0.5ha of 4 which includes regrowth of varying stages
3.9
Total original area for revegetation (From ORP)
39
*Note Regrowth areas not included in total areas
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6.0 Summary & Recommendations
Summary
1. The offset delivery requires a total area of 24 ha to be offset. The required areas
for each of the 3 RE’s are:
a. Endangered Regional Ecosystem (RE) 12.3.1 - 19 ha.
b. Of Concern RE 12.3.2 - 5 ha; and
c. Least Concern RE 12.3.11 - approximate 11.1ha designated for additional
restoration.
2. RE Assessments were undertaken across the 27 OA’s which make up the total
offset revegetation area of 39.1ha to determine the condition of the vegetation in
relation to its remnant status.
3. The majority of the 27 OA’s contain mature vegetation that is in good ecological
condition and meets the requirements for remnant status in relation to time since
clearing occurred, canopy height and cover benchmarks, and characteristic
species.
4. If proposed RE changes are updated and mapped as remnant then the total area
possible to be considered remnant status is 35.19ha (table 7).
5. All OA’s contain mixed (heterogeneous) RE’s except 1, 2, 13 & 25 which were
100% 12.3.1a.
6. Analysis of relative areas for each RE type found the offset site contains a total of
19.396ha of RE 12.3.1a meeting the required 19ha; 4.314ha of RE 12.3.2 falling
slightly short of the desired 5ha; and an additional 10.686ha of RE 12.3.11. OA 13
was assessed to contain 0.79ha of RE 12.9-10.1 (Of Concern).
7. OA 13 on the northern bank of the lake did not align with the required RE types as
it contained a sedimentary land zone and aligned with the dominant mapped RE
12.9-10.1, however it is noteworthy as it did meet the requirements for remnant
status and does increase the amount of assessed Of Concern RE within the offset
site to the required 5ha.
8. A total of 3.9ha of offset area remains as regrowth as it does not meet the height,
cover or species requirements (OA – 17, 18 19, and the centre 0.5ha of 4). This is
a result of access issues associated with adjoining private properties which
impacted on the ability to conduct revegetation and maintenance works.
9. Where an update to state RE mapping to show a change in vegetation to remnant
status was justified RE Kit Assessment forms were collated and are included as a
separate document - RE Assessment Kit, Noosa Council Offset Site, document
no. 220920-REA-D.
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Recommendations
1. It is suggested that consultations with DES are undertaken with submission of RE
Kit documents to DES to discuss viability of using the additional 0.79ha of RE
12.910.1, and additional 10.686ha of RE 12.3.11 that meets remnant status to
compensate for the lack of required RE 12.3.2 (0.7ha short of 5ha requirement).
Over time it is considered likely that the constitution of ecosystems in the Offfset
areas will continue to revert to the pre-clear gallery rainforest and associated RE’S
12.3.1a and 12.3.2.
2. It is recommended that negotiations are followed through with SEQ Water to
finalise the listing of OA’s as conservation offset areas (Category A- regulated
vegetation).
3. Upon the consent of the landowner a PMAV process can be undertaken using the
information provided in this assessment and the relevant supporting
documentation (RE Assessment Kit, Noosa Council Offset Site, document no.
220920-REA-D).
4. In the event that the landowner is not in agreeance to undertaking a PMAV of the
OA’s it may be possible to submit this report and the relevant supporting
documentation to the QLD herbarium for inclusion in their bi-annual remnant
mapping update. This would mean that upon QLD herbariums acceptance of the
data provided the relevant OA’s would be mapped as remnant vegetation therefore
fulfilling one of the requirement of the ORP.
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Native Foresters 7.0 REFERENCES Eyre et al., (2017) Method for the Establishment and Survey of Reference Sites for BioCondition. Version 3. Queensland Herbarium, DSITI, Brisbane. Neldner, V.J., Wilson, B.A., Dillewaard, H.A., Ryan, T.S., Butler, D.W., McDonald, W.J.F, Richter,D., Addicott, E.P. and Appelman, C.N. (2022) Methodology for survey and mapping of regional ecosystems and vegetation communities in Queensland. Version 6.0. Updated April 2022. Queensland Herbarium, Queensland Department of Environment and Science, Brisbane. Noosa Council, (2006) Remnant Vegetation Offset Restoration Plan, Lake Macdonald Catchment. Queensland Government, DSITI (2016) BioCondition Benchmarks for Regional Ecosystem Condition Assessment – RE 12.3.2, 12.3.1 and 12.3.11. Queensland Herbarium (2021) Regional Ecosystem Description Database (REDD). Version 12.1 (December 2021) Queensland Department of Environment and Science: Brisbane. Regional Ecosystem Assessment KIT Version 1.0, Queensland Herbarium, Department of Environment and Science, 13 June 2022) Wilson, P.R. and Taylor, P.M. (2012) Land Zones of Queensland. Queensland Herbarium, Queensland Department of Science, Information Technology, Innovation and the Arts, Brisbane. 79 pp. Regional Ecosystem Assessment – Noosa Council Offset Site – Lake Macdonald Catchment 25
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Native Foresters APPENDIX A – APPROVED LAKE MACDONALD OFFSET RESTOATION PLAN, NOOSA COUNCIL Regional Ecosystem Assessment – Noosa Council Offset Site – Lake Macdonald Catchment 26
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Native Foresters APPENDIX B – EXAMPLE RE ASSESSMENT KIT DATA SHEETS Regional Ecosystem Assessment – Noosa Council Offset Site – Lake Macdonald Catchment 92
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