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VOLUTARIA IN
NEWPORT BEACH
ECOLOGICAL IMPACTS
Newport Beach vs. to
Borrego Springs
Impact to native ecology
FUTURE MANAGEMENT
Where do we go from here?
HISTORY
More than we knew
Value of Early Detection
& accurate identification.
CURRENT SITUATION
Management to date
Scope of the infestation
Current management
History of the Newport Beach Infestation
Current Situation
Ecological Impacts
Future Management Actions and Goals
History of the Newport Beach Infestation
Current Situation
Ecological Impacts
Future Management Actions and Goals
PO
INT
LO
MA
:K
EIR
MO
RS
E
87 88 89 90 91 92 93 94 95 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 1885 86 17 18
BO
RE
GG
O S
PR
ING
S:
1 p
lant
, R
T H
AW
KE
, F
eb 2
3
CH
UL
A V
IST
A:
JE
SS
E V
INJE
: Jun 6
VOLUTARIA THE CALIFORNIA INVASION
NE
WP
OR
T B
EA
CH
:B
AR
BA
RA
BO
ET
HLIN
G,
Mar
31
Jan 2
9
87 88 89 90 91 92 93 94 95 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 1885 86 17 18
VOLUTARIA THE CALIFORNIA INVASION
NE
WP
OR
T B
EA
CH
:B
AR
BA
RA
BO
ET
HLIN
G,
Mar
31
Jan 8
PO
INT
LO
MA
:K
EIR
MO
RS
E
87 88 89 90 91 92 93 94 95 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 1885 86 17 18
BO
RE
GG
O S
PR
ING
S:
1 p
lant
, R
T H
AW
KE
, F
eb 2
3
CH
UL
A V
IST
A:
JE
SS
E V
INJE
: Jun 6
VOLUTARIA THE CALIFORNIA INVASION
NE
WP
OR
T B
EA
CH
:B
AR
BA
RA
BO
ET
HLIN
G,
Mar
31
87 88 89 90 91 92 93 94 95 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 1885 86 17 18
NE
WP
OR
T B
EA
CH
:B
OB
DeR
UF
F,
May
1 p
hoto
BO
RE
GG
O S
PR
ING
S:
1 p
lant
, R
T H
AW
KE
, F
eb 2
3
NE
WP
OR
T B
EA
CH
:B
AR
BA
RA
BO
ET
HLIN
G,
Mar
31
CH
UL
A V
IST
A:
JE
SS
E V
INJE
: Jun 6
NE
WP
OR
T B
EA
CH
:B
OB
DeR
UF
F,
Mar
1,
Voucher
VOLUTARIA THE CALIFORNIA INVASION
23 YEARS
PO
INT
LO
MA
:K
EIR
MO
RS
E
30 YEARS
History of the Newport Beach Infestation
Current Situation
Ecological Impacts
Future Management Actions and Goals
Big Canyon
Managed by Irvine Ranch
Conservancy, under contract
from City of Newport Beach
Gross cover: 2 acres
2015: 4,200 plants removed
2016: 2,000 plants removed
2017: 1,000 plants removed
Irvine Blvd.
Managed by Orange County Parks
Gross cover: 2.5 acres
2017: 4,000 plants treated or hand pulled
History of the Newport Beach Infestation
Current Situation
Ecological Impacts
Future Management Actions and Goals
Volutaria Annual
Precipitation Niche
0 1 2 3 4 5 6 7 8 109 11 12 13 14 15 16 17 18 19 20 21 22
Anza-Borrego2010-current
Newport Beach1987-current
Canary IslandsHistorical
3.1
7 a
vg
.
10.6
3 a
vg
.
5.6
2 a
vg
.
Rainfall inches
History of the Newport Beach Infestation
Current Situation
Ecological Impacts
Future Management Actions and Goals
Big Canyon
Continuation of management by
Irvine Ranch Conservancy, under
contract by City of Newport Beach
Irvine Blvd.
Management by Orange County
Parks. Less certain.
Future Management
Needs:
Comprehensive annual surveys
throughout the entire bay. 3,300
acres.
Long term continueation of IRC
management contract in Big
Canyon.
Comprehensive management plan
by OC Parks at Irvine Blvd. colony.
VOLUTARIA IN
NEWPORT BEACH
Thank you to: Jason Giessow, Dendra, Inc.
Keir Morse, Biological Consultant, San Diego
Jennifer Naegele, Resource Specialist Orange Co. Parks
Riley Pratt, Irvine Ranch Conservancy
Ron Vanderhoff CA Native Plant Society, Orange County