ccri - coral reef long-term ecological monitoring program...
TRANSCRIPT
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CCRI - Coral Reef Long-Term Ecological Monitoring Program: A proposal and case studies from the eastern Puerto Rican shelf.
�Edwin A. Hernandez
�University of Puerto Rico�Department of Biology
Coral Reef Research Group
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Objectives
� Discuss the proposed sampling design for establishing the CCRI - Coral Reef Long-Term Ecological Monitoring Program (CRLTEMP).
� Present three case studies from the eastern PR shelf as examples of the type of analysis that will be carried out in the CRLTEMP.
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Mayaguez (Tourmaline, Ron, Media Luna)Boqueron (El Palo, Resuellos, Gallardo)
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Mona (Pajaros, Mujeres, Carmelitas)Desecheo (North, Botes, Canoas)
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CCRI-CRLTEMP Research questions
� What are spatial and temporal variation patterns in the community structure of coral reef benthic and fish communities across the western PR shelf?
� Are coral reef benthic and fish communities in oceanic islands (Mona, Desecheo) in “better”ecological condition than those located in the western PR shelf (Boqueron, Mayaguez)?
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Fish community assessment
� Belt transects (25 x 4 m).
� 4-way ANOVA– Location (shelf, oceanic)– Site (n=2)– Reef (n=3)– Depth (3 m, 10 m)– Transect (n=6) – error term
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Fish community data
� Species richness.� H’n.� J’n.� Abundance.
– Total.– Species.– Functional groups.– Fishery target species.
� Biomass.– Total.– Species.– Functional groups.– Fishery target species.
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Benthic community assessment
�Belt transects (10 x 2 m).�3-way ANOVA
–Location (n=2); Site (n=2); Reef (n=3);Depth (n=2)–Transect (n=5) – error term
I-2 I-3 I-4 3 mI-1 I-5
I-2 I-3 I-4I-1 I-5
10 m
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Benthic community data collection
� High-resolution digital photography.
� Quadrats 1 m2
(n=20/transect).� 50 random dot grids
(CPCE 3.0, NSU).
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Benthic community data
� Coral species richness.� Colony abundance.� H’n� J’n.� % Coral.
– Scleractinians.– Hydrocorals.– Encrusting octocorals.
� % Recent/Old mortality.
� % Algae (total).– Macroalgae.– Filamentous.– Halimeda.– Erect calcareous algae.– Encrusting algae.
� % Cyanobacteria.� % Sponges.� % Didemnid tunicates.� % Others.
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Benthic community data
� Gather baseline information regarding the incidence of coral diseases/syndromes.
� Follow Weil (2002).
� Belt transects (10 x 2 m).
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Benthic community data
� Assess benthic macroinvertebratedensities.
� Belt transects (10 x 2 m).
– D. antillarum.– C. abbreviata.– H. carunculata.
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Expected end-products
� Publish, of course!!!
� Produce useful data analysis and interpretation that can be readily available for.– Managers.– Decision-makers.– General public.
� Training of DNER personnel to apply the CCRI-CRLTEMP model to other locations.
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Case Study #1
� Spatial variation patterns in coral reef community structure in the eastern PR shelf.
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Design
20 Sites
Depth: 3-12 m
Replicates: 6-11 transects/site(N=131 transects)
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Low % CoralChronic degradation and bombarded reefs
PIC-I
PIC-O
LUQ-I
LUQ-O CSJHEDDEMALG IR
AIC
APALDIAGALVNO-IVNO-N
ICASM
AGCRO
PFO-NI
PFO-I
% C
oral
cov
er
0
20
40
60
80
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High % AlgaeChronic degradation and bombarded reefs
PIC-I
PIC-O
LUQ-I
LUQ-O CSJHEDDEMALG IR
AIC
APALDIAGALVNO-IVNO-N
ICASM
AGCRO
PFO-NI
PFO-I
% A
lgal
cov
er
20
40
60
80
100
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MDS Plot: Secchi readings
Pic In
Pic Of Luq
CSJ
IRA
PALICA DIAPMAPCAPCRPFO
CRA
Stress: 0
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y= 4.05 + 0.20x
r= 0.8557
p<0.0001
Spe
cies
ric
hnes
s
2
4
6
8
10
12y= 11.32 + 0.84x
r= 0.8061
p<0.0001
Col
ony
abun
danc
e
0
5
10
15
20
25
30
35
40
y= 10.69 + 1.45x
r= 0.7995
p<0.0001
% C
oral
cov
er
0
10
20
30
40
50
60
70y= 84.30 - 1.46x
r= 0.7762
p= 0.0003
% A
lgal
cov
er
30
40
50
60
70
80
90
100
y= 1.77(1-e-0.47x)
r= 0.7762
p=0.0002
Horizontal water transparency (m)
0 5 10 15 20 25
H'n
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
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Case Study #2
� LPCNR Coral Reef Long-Term Ecological Monitoring Program.
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500 m
Arrecife linear con algunos surcos y espolonesArrecife/Rocas colonizadasArrecife/Pavimento colonizadoArrecife/Pavimento colonizado con canalesArrecife/Rocas y corales dispersosArrecife de parcho (corales agregados
Hierbas marinas (Continuas)Hierbas marinas (70-90%)
ArenaHierbas marinas (30-50%)
Planicie de Macroalgas (10-50%)
500 m
Luis Pena Channel No-Take Natural Reserve,Culebra Island
June 11, 1999Sept. 30, 1999 (no-take)
637 ha
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Bombs, bombs and more bombs!
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Methods
<4 m
4-8 m
>8 m
Line intercept transects + digital photography (10 m-long).2-way Repeated Measures ANOVAYears (1997, 1998, 1999, 2001, 2002, 2003)Depth (<4m; 4-8 m; >8 m)
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Reefs are rapidly declining!
� 31-66% decline in % coral cover.
� 5-11% annual decline.
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Algae are taking over reefs!
� 104 to 1,423% increase in % macroalgal cover.
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Cyanobacteria are blooming!
� 161 to 1,370% increase in % cyanobacterialcover.
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Phase shift through time!
1997
1998
1999
2001 2002
2003
Stress: 0
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A sort of “ natural” mortality factors
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Another bunch of human factors
� Water quality degradation associated to nutrient and sediment runoff pulses.
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Coral Reef Ecological Mess Model!
Predator overfishing
Increased damselfishdensities
Declining primaryhabitats ofdamselfishes(A. cervicornis)
Invasion of secondary habitats(predation of new coral polyps)
Interferencecompetition withcoral tissueregeneration
Increased frequency of coral tissuelesions and susceptibility to pathogens
Increasedfilamentous algalcover
Localized inc rea sein nitrogen fixation
Increased coralcolony mortality
Increased bioerosion ratesIncreased sedimenttrapping by algal turfs,decline in coral tissueregerneration andrecruitment rates
Moderate or low herbivore fishdensities (long-term ecosystemoverfishing effect)
Migration of herbivore fishschools as a behavioralresponse to spearfishing
Low D. antillarum densities
Declining herbivory
Increased macroalgal cover
Substrate pre-ocupationoutcompetion of corals, inhibitionof coral tissue regeneration andrecruitment
Cyanobacterialbloom
Bleaching-relatedErythropodiumcaribbaeorum mortality
Increase in highly concentrateddissolved nutrient pulses
Water transparency declinedue to phytoplnkton bloom,increased concentration ofsolid suspended material,increased sedimentation
Decline in coralcalcification, skeletalextension and growthrates. Increasedbioerosion rates
NET COMMUNITY PHASE SHIFT
Coral mortality as a resultof recurrent disease/syndrome outbreaks
Invasion by pathogenicmicroorganisms,induction of physiologicalstress, alteration of coral-associated microflora
Increased corallivorous snail andfireworm densities
Coral tissue predation
Decline in reef biodiversity, coral functional groups (i.e., Acroporids), engineer species (bioconstructors), essentialfish habitats, shortening of food webs and declines in ecosystem processes
Disease-spreadingvectors
Coral mortality as a resultof recurrent disease/syndrome outbreaks
Frequent nutrient-rich runoff pulses
Localized increa sein nitrogen f ixation
Oh, oh!!!!What the heck!
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Case Study #3
� Document spatial and temporal variation patterns in the structure of coral reef fish communities within the Luis Pena Channel No-Take Natural Reserve, Culebra, PR.
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Stationary visual censuses
(Bohnsack & Bannerot, 1986)
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Core: Total biomass
Time
- 1996 - 1998 - 1999 - 2002 - 2003 - 2004
Tot
al b
iom
ass
(g)
0
5000
10000
15000
20000
25000
<5 m5-15 m
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Core: Scraper herbivore biomass
Year
- 1996 - 1998 - 1999 - 2002 - 2003 - 2004
Scr
aper
bio
mas
s (g
/cou
nt)
0
1000
2000
3000
4000<5 m5-15 m
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Core: Piscivore biomass
Year
- 1996 - 1998 - 1999 - 2002 - 2003 - 2004
Pis
civo
re b
iom
ass
(g/c
ount
)
0
2000
4000
6000
8000
10000
12000
<5 m5-15 m
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Core: Fishery target species SSB
Time
- 1996 - 1998 - 1999 - 2002 - 2003 - 2004
Sta
ndin
g st
ock
biom
ass
(g/m
2 )F
ishe
ry ta
rget
spe
cies
0
20
40
60
80
100
120
<5 m5-15 m
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Factors Global R Significance
Global testYearDepthYear x Depth
0.600-0.0130.065
0.2%42.9% NS
0.2%
ANOSIM core area (1996-2004)
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ANOSIM core area (1996-2004)
Factors Global R Significance
Pairwise test1996 vs. 19981996 vs. 19991996 vs. 20021996 vs. 20031996 vs. 2004
1999 vs. 20021999 vs. 20031999 vs. 2004
0.0140.0560.0680.122-0.001
0.1590.2210.098
31.0% NS15.8% NS
4.1%1.6%
46.8% NS
0.7%0.1%4.0%
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What about spatial effects?
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Total biomass
Year
- 1999 - 2002 - 2003 - 2004
Tot
al b
iom
ass
(g/c
ount
)
0
2000
4000
6000
8000
10000
12000
14000
16000
18000
CoreBoundaryControl
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Scraper herbivore biomass
Year
- 1999 - 2002 - 2003 - 2004
crap
er b
iom
ass
(g/c
ount
)
0
500
1000
1500
2000
2500
3000
3500
CoreBoundaryControl
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Piscivore biomass
Year
- 1999 - 2002 - 2003 - 2004
Pis
civo
re b
iom
ass
(g/c
ount
)
0
1000
2000
3000
4000
5000
CoreBoundaryControl
![Page 45: CCRI - Coral Reef Long-Term Ecological Monitoring Program ...ccri.uprm.edu/researcher/Hernandez/Hernandez_Feb_2005.pdfDiscuss the proposed sampling design for establishing the CCRI](https://reader034.vdocuments.us/reader034/viewer/2022050121/5f518f46e8c58f31ed0b2c73/html5/thumbnails/45.jpg)
Fishery target species SSB
Year
- 1999 - 2002 - 2003 - 2004
Fis
hery
targ
et s
peci
esst
andi
ng s
tock
bio
mas
s (g
/m2 )
0
10
20
30
40
50
60
70
CoreBoundaryControl
![Page 46: CCRI - Coral Reef Long-Term Ecological Monitoring Program ...ccri.uprm.edu/researcher/Hernandez/Hernandez_Feb_2005.pdfDiscuss the proposed sampling design for establishing the CCRI](https://reader034.vdocuments.us/reader034/viewer/2022050121/5f518f46e8c58f31ed0b2c73/html5/thumbnails/46.jpg)
ANOSIM Site x Year x Depth
Factors Global R Significance
Global testSiteYearDepthSite x YearSite x DepthYear x Depth
0.4020.0790.0040.4030.382-0.073
0.0%11.9% NS40.0% NS
0.9%0.0%
77.4% NS
![Page 47: CCRI - Coral Reef Long-Term Ecological Monitoring Program ...ccri.uprm.edu/researcher/Hernandez/Hernandez_Feb_2005.pdfDiscuss the proposed sampling design for establishing the CCRI](https://reader034.vdocuments.us/reader034/viewer/2022050121/5f518f46e8c58f31ed0b2c73/html5/thumbnails/47.jpg)
Summary remarks
� CCRI-CRLTEMP aimed at measuring multiple coral reef benthic and fish community variables.
� Expand existing efforts to produce important baseline information regarding fish communities applicable to future model analysis.
![Page 48: CCRI - Coral Reef Long-Term Ecological Monitoring Program ...ccri.uprm.edu/researcher/Hernandez/Hernandez_Feb_2005.pdfDiscuss the proposed sampling design for establishing the CCRI](https://reader034.vdocuments.us/reader034/viewer/2022050121/5f518f46e8c58f31ed0b2c73/html5/thumbnails/48.jpg)
Summary remarks
� Provide a useful data bank and recommendations to State and Federal managers and decision-makers.
� Sampling design can be applied to test different hypotheses.
� Have information accessible to the general public.
![Page 49: CCRI - Coral Reef Long-Term Ecological Monitoring Program ...ccri.uprm.edu/researcher/Hernandez/Hernandez_Feb_2005.pdfDiscuss the proposed sampling design for establishing the CCRI](https://reader034.vdocuments.us/reader034/viewer/2022050121/5f518f46e8c58f31ed0b2c73/html5/thumbnails/49.jpg)
Thanks!
Any questions for Dad???