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2022-10-24 General Committee Meeting- Item 7 - Attachment 1 - Noosa Oyster Ecosystem Restoration Project - Final Report (1)
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Seagrass Report
Summary
See Annex 36
QX and Winter
Mortality Response
See Annex 37
48
Summary -
TheNature
Conservancy QP
* > Australia
rare) ye Se iM ;
See Annex 36 : ‘ ‘ ; a Noosa Seagrass Report Summary
ate, “ iy a
Sy < Seagrass as habitat Why seagrass changes
ee range of marine faune. They elso support senthic cenvirormertal concitions anc declines in water quality
a Se a Ss macreinvertebrate communities, which in tum provide {particu ary high leve's of susperded sediment i the
SS See ———— se SS SSS —— food for many larger, commercisily ard recroaticrally watet) and are therefore considered indicators of
a gee ee ee inportant species of crustacean. rrotusc and finfish enviconmental stressor degradation,
ee oe 2 Ge ee As 2 result, the spatial diatrizution of seagrass can be
== — 5 ————— SS Current seagrass extent highly dyramic, with lange interannual charges in the
: sae = —————— “ha ASSas Hie Sa cb in aaah extent of seagrass heo‘tats and community structure
———= = Tans ti ay fori cadereie? usa vont cubace Tne
5 a = —= with several seagrass meadcws cccurringin the lower aleneherae fret pel ae net
CS = estuary, me va
‘ a oa = The seagrass meadows are domirated by Long Eelgrass What is next for Noosa's seagrass
. a: .
wags Zostera muriler! sub sp capricars} with occasional sparse ecaue of their importance for estuarine ecosystems, the
; a 4 patches ol flops eal. 7. mueller! meadow are 2rac'se drivers fr 12 decline end lack of recovery of ne
predominertly found in derse, cut catcry, beds along the Noosa River Estuary seagrass meacows qeec urgent
» main cranral and arounz several small islands vestigation. detter unulerstarding a! the Noosa River
, Seagrass decline for rescurces to enzbie “esearch anz recovery action
Since 1989, the Noosa River estuary has lost 80 percent of
its seagrass anc is showing no signs of recovery (see Table Final comment from the expert
a nT, ears comer 2974 tea of Noose micas orn Weare Sack is Hskag Gebers
estuary, By 2006, this caverage had fallen te just S3.7 ha seagrass meadows has occurred within a few years. Ths is
i The lrecst sonrasa declines have been inthe mats not Ihe cas In Noosa,
cians tke Vfeyoe are Lake Goorokuen Simon Wolker (Dicoctor aad Principal Ecologist
Studies 2008 and 2020 confirmed that despite some EcolngicoSercce rofssicnole)
riinor s2zsoral fuctuat'o7s, Noose's seaprass meadows
have not recovered. Ia cter arts of Queensland, Full report
inching the southeast, Zostero-daminated seagrass Walker SJ, Hayes (4, Watson £, Gacibmin § & Tharburn |
madaws typically recaver quictly from significant Ines, 2071. Caner! and tistical disvbaion of seagrass jn the
often within a tew years The lack of seagrass recovery in Nooso Estuary. Report prepared for The Neture
Noose is therefore alarming. Conservancy, Seatember 202°. 37pp.
What caused the seagrass loss
Storms and flooding mast jkely caused the majo-less of
swagress inthe Noosa River estuary The biz question
today is What is preventing the recovery of the
Noosa River estuary’s seagrass meadows?
cry renee rer
cir cris) 2006 Ey Fr Mie daha bd
Lake Cooroibah NA 229624 71,323 61,672 o 100
Report prepared by Ecological Service Professionals Noosa Rivec—Tewartin 100,651 134,541 39,260 26,731 28,540 =79
° Lake Doonesia 495,772 457,164 127,158 363,764 318,129 30.
Noosa River—Goatlsland 3.265 105.247 28.831 23.939 9.313 =o
‘Wyba Crock NA 647,065 270,366 239551 206,510 =08
. Lake Weyba NA_1.800.445 ° o 20 00
{heNature eke Senpease hae NA 3,374086 537,038 725,258 561,512 83
‘onservancy \ ae
Pi neal Savarese Area(He} = NA 30788772888 83
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