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Using Local Ecological
Knowledge to DescribeSea Nettle Population Dynamics
in Barnegat Bay, NJ
By: Monica Chang, Taylor Donovan, Quinn Dunlea, Arianna Grace,
Cassie Leahy, Meaghan Martin, Brooke Minotti, Demi Palmer, Sohia
Porras, !ussell "hitsitt, #ach #ega
Marine Aca$emy o% Technology an$ &nvironmental Science 'MAT&S(,Manaha)kin, *+ -.
A$visor: Talia /oung
!utgers 0niversity Marine 1iel$ Station,
Tuckerton, *+ --2
*3$3 Photograh3 Stock Photo4 Getty 5mages3 Weather.com3 The "eather Channel, LLC, 62 +une 6763 "e83 7 9ct3 673
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Outline
; Backgroun$
< Sea nettles
< The ro8lem
; 9ur goals
; Metho$s
; !esults
; Possi8lee=lanations
Photo %rom htt:44883ocean3e$u4ages463as
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Bacground
!ommon name: Sea nettleScienti"ic name: Chrysaora quinquecirrha
#abitat: Temerate )aters an$ estuaries )hich
are lo) in salinity
$ange:
;Atlantic Coast
;Gul% o% Me=ico to *e) &nglan$
Diet: Carnivorous:
;#oolankton
;Ctenohores;1ish eggs an$ larvae
'Cal$er 7>26(
'Purcell et al3 7>>?(
Photo taken 8y "es Dal@ell on 9cto8er 6-, 673 ettle Creek,
Brick To)nshi3
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$eproduction
A$ults $o not survive
the )inter, olys $o
Se=ual rero$uction
Ase=ual rero$uction
Deretsky, #ina3 Li%e Cycle o% a +elly%ish3 Digital image3 #ina Stu$io3 *ational Science 1oun$ation, ? May 673 "e83 Accesse$ Set3 673
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Our Study %rea& Barnegat Bay
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Sea Nettles in Barnegat Bay
; 1irst $ocumente$ in 7>6-,8ut no) more a8un$ant'?>th*+ State Agricultural &=eriment Station !eort(
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'(at is t(e Problem)
; Deter recreation
. to 6< Greater than years on 8ay:
67 intervie)ees
< Less than years on 8ay:
77 intervie)ees
$elations(ip to bay Number o"interiewees
!ecreational 7-
Commercial %ishermen E
Scientist ?
9ther 'li%eguar$, 8ay e$ucator( 6
Photo cre$it: Taylor Donovan
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Surey +nstrument
; 7- uestions:< History on 8ay
< 1reuency on 8ay< Activities on 8ay
< 1irst sighting o%
sea nettles on 8ay
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$esults
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*ore results
Median year:
LongItime users: 6
More recent users: 62
Median year:
!ecreational:6
!ommercial& -../
Scientists: 6E
9ther: 6
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Possible e0planations
73 Bulkhea$ing s)itch:early 6Js: creosoteItreate$ )oo$ to vinyl
htt:44mathesonconstruction3com httI)))3merchantcircle3com8usiness+3An$3L3"ater%ront3Construction36.6I227I>>.Eicturevie)7272>
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63 Poulation gro)th, increase$ nutrient loa$ingan$ eutrohication
Possible e0planations
Poulation $ensity in 9cean County
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Possible solutions
; &$ucation
< "hy is this issue imortant, %or coastal an$ inlan$
resi$entsK
; Mitigation strategies
< Barrier nets 'me$usae(
< Bu88lers 'me$usae(
< Bulkhea$ scraing 'olys(
httIsaveourseas3comroectssharksotters@au$ateonthe%ishhoeke=clusionnetroect
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%cnowledgments
; 9urintervie)ees; MAT&S:
+ "nek, + elsey
; !utgers 0niversity
Marine 1iel$ Station: A8le, ! Hagan
; Metho$ological suort:A Baker, A Gor$on, D arna$, S /ahm, T #immerman
; 1in$ing intervie)ees:
A Anholt, Caone, ! 1o=, S #eck
; 1un$ing:!utgers 0niversity GA an$ *S1IG!1P to T /oung
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1uestions)