11th ICRS Abstract book - Nova Southeastern University
11th ICRS Abstract book - Nova Southeastern University
11th ICRS Abstract book - Nova Southeastern University
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23.1035<br />
Post-Hugo Recovery Of A Protected And Unprotected Reef: St. Croix, Us Virgin<br />
Islands<br />
Dana FISCO* 1 , Monica ARIENZO 2 , Connie SOJA 3 , Dennis HUBBARD 4<br />
1 Marine and Freshwater Sciences, Colgate <strong>University</strong>-KECK Consortium, Hamilton, NY,<br />
2 Franklin and Marshall College, Lancaster, PA, 3 Colgate <strong>University</strong>, Hamilton, NY,<br />
4 Oberlin College, Oberlin, OH<br />
Over the past three decades Caribbean reefs have experienced a shift from coral to algal<br />
dominance. Reefs on St. Croix, US Virgin Islands, have experienced the full range of<br />
stresses credited with decline. In 1989, Hurricane Hugo caused extensive damage to<br />
reefs already impacted by White Band Disease. The proximity of reefs within Buck<br />
Island National Monument and unmanaged areas only 5 km away on St. Croix (Tague<br />
Reef) provides a unique opportunity to examine reef recovery under similar<br />
oceanographic conditions but different degrees of protection. Twenty-meter chain<br />
transects were surveyed at 3, 6 and 9 m depths at three sites on the two reefs. Equal areas<br />
were surveyed on each reef, spread over distances of 1-2 km. Data were compared to<br />
post-Hugo surveys at the three Tague Reef sites and the center site on Buck Island.<br />
Present-day coral cover was identical on the two reefs when averaged for all sites and all<br />
depths (12%). On Tague Reef, coral diversity increased drastically at the 6 and 9 m<br />
depths in all locations but only slightly at the 3 m depth locations—solar panel 3 m<br />
transect showed a loss in diversity. Porites asteroides, increased in shallow water. Coral<br />
cover at the southern Buck Island monitoring site remained constant (12%) 18 years after<br />
Hurricane Hugo. A companion study revealed significant differences in the grazer<br />
populations at the two sites (parrotfish at Buck Island; Diadema on Tague Reef), but the<br />
general condition of the benthos appears to be similar. These data appear to indicate that<br />
either the higher abundance of grazing scarids at Buck Island is not sufficient to reverse<br />
effects of local nutrient increases and fishing outside the park, or that larger factors (e.g.,<br />
bleaching and disease) are exerting the dominant control on reef decline and recovery.<br />
23.1036<br />
Biodiversity Of Coral Reef in Sumbawa Sea, Indonesia:comparison Between<br />
Underwater Observation And Satellite Imagery<br />
Susumu KANNO* 1 , Masahiko YANAGAWA 1 , Akihiko OHGANE 2 , Kimiya HOMMA 1<br />
1 Ocean Industry, Kyowa Concrete Industry Co., Ltd., Sapporo, Japan, 2 Zeal Oceanic<br />
Office, Sapporo, Japan<br />
Biodiversity in coral reef is discussed with both in-situ observation using underwater<br />
trans-section method and satellite imagery in coastal area of Sumbawa Sea, Indonesia.<br />
Line trans-section was carried out over two thousands meter along the coast and the result<br />
showed that there is a lot of species of reef coral and their biodiversity is higher than<br />
another habitat area in Indonesia. Principal component analysis was carried out for<br />
coverage of each species, water quality, and topographic factors by using these results of<br />
identification about coral species. Coverage of Acropora, Porites, Favia species, and<br />
transparency at out side of reef have positive contribution. These items appeared in first<br />
component in the analysis too. On the other hand, chlorophyll, turbidity, and fetch have a<br />
negative contribution to the total environment in this coral reef. These mean that the<br />
environmental condition in this coral reef depends on purity and optical properties of<br />
ocean water. Usually hermatypic coral reef-building coral makes habitat in inside of<br />
clean and shallow coastal reef area. Then, the indicators of water quality appeared as high<br />
contribution as both positive and negative contribution; (1)coral species living in clear<br />
seawater, (2)quantity increasing with cleanliness of seawater as transparency, (3)one<br />
decreasing with the cleanliness as chlorophyll, turbidity, and fetch leading to spinning up<br />
of bottom quality. Finally, classification of bottom attribute and coral species has been<br />
made a trial by ALOS/AVNIR-2 satellite imagery with training data obtained by the<br />
underwater trans-section of bottom quality on the reef area. The bottom attribute in the<br />
reef was classified with coral coverage in the habitat, species of the coral, rock reef, dead<br />
coral, and coral sand relatively clearly. This method can be utilized for environmental<br />
management in coastal region based on not only qualitative analysis but also quantitative<br />
analysis.<br />
Poster Mini-Symposium 23: Reef Management<br />
23.1037<br />
Effectiveness Of A Marine Protected Area On The East End Of St Croix, U.s. Virgin<br />
Islands Using The Queen Conch Strobus Gigas, As A Sentential Species<br />
Barbara KOJIS* 1 , Norman QUINN 2<br />
1 Department of Science and Math, <strong>University</strong> of the Virgin Islands, St Thomas, Virgin Islands<br />
(U.S.), 2 Coastal Zone Management, St Croix East End Marine Park, St. Croix, Virgin Islands<br />
(U.S.)<br />
From October 1998 to September 2001, a previous study conducted surveys of the queen conch<br />
populations at six back reef embayments at the east end of St Croix. Population densities were<br />
higher in the northeast embayments (52.6 conch / ha) compared to the southeast embayments<br />
(33.6 conch / ha). About 87% of the conch measured were juveniles. Subsequent to that study,<br />
the 155 km2 territorial St Croix East End Marine Park was established in January 2003 and<br />
rules and regulations governing activities in the park were enacted in late 2007. Several back<br />
reef embayments were designated “No Take Areas” where the collection of all marine animals<br />
was prohibited. At around the same time, the seasonal closure for queen conch from July 1 –<br />
September 30 of each year was extended to December 31, 2007 by the Virgin Islands’<br />
Department of Planning and Natural Resources because of the recent dramatic increase in the<br />
harvest of queen conch by commercial fishers on St. Croix and the determination that queen<br />
conch was being severely overfished on St. Croix. This study will: 1) compare the current<br />
population structure of queen conch in the back reef embayments with the previous study, 2)<br />
review compliance with the rules and regulations, and 3) discuss adaptive management<br />
strategies.<br />
23.1038<br />
Gaining Ground in Improving Marine Protected Areas (Mpas): The Philippine<br />
Experience<br />
Hazel ARCEO* 1 , Porfirio ALINO 2,3 , Vincent LUMBAB 1 , Cleto NANOLA 4,5 , Ma. Fe<br />
PORTIGO 6<br />
1 DAI/USAID Philippine Environmental Governance 2 Project, Cebu City, Philippines,<br />
2 DAI/USAID Philippine Environmental Governance 2 Project, Ortigas, Metro Manila,<br />
Philippines, 3 <strong>University</strong> of the Philippines - The Marine Science Institute, Quezon City,<br />
Philippines, 4 DAI/USAID Philippine Environmental Governance 2 Project, Davao City,<br />
Philippines, 5 <strong>University</strong> of the Philippines - Mindanao, Davao City, Philippines, 6 DAI/USAID<br />
Philippine Environmental Governance 2 Project, Pagadian City, Philippines<br />
Several reviews about the status of MPAs in the Philippines have been conducted (e.g. Baling<br />
1995, Haribon 1997, Alcala and colleagues) with insights on MPA sizes, management, gaps and<br />
challenges. This paper aims (1) to re-examine the evaluation by Aliño et al. (2001) and<br />
determine any improvements that may have resulted from the adoption of recommendations and<br />
good practices highlighted during this last review; and, (2) to evaluate the management<br />
effectiveness of at least ten MPAs by looking at ecological trends and the performance of the<br />
MPA managers. Biophysical information obtained using standard reef survey methods was<br />
used to determine ecological patterns while the MPA Rating System, developed by Coastal<br />
Conservation and Education Foundation (2005) and modified to include governance indicators,<br />
and community perception surveys were employed to assess performance. Results show an<br />
increase in the number of MPAs, now with over 1,100 existing MPAs, and an observed shift in<br />
the modal range of MPA sizes, with larger areas being placed under protection. Analysis from<br />
the sample MPAs shows that ecological trends are not always consistent with the performance<br />
evaluation results, and that biophysical and performance indicators can collectively present a<br />
more accurate description of the MPA management levels rather than each one alone. The rates<br />
of improvement among the MPAs also vary. Factors that may have influenced the differential<br />
rates include baseline ecological conditions, functionality of management groups including<br />
information, education and communication, compliance and enforcement strategies,<br />
implementation of other fisheries management interventions outside the no-take areas, and<br />
alliances with other managers. Insights from this study will be useful in setting the directions<br />
towards attaining more improved and well-managed MPAs. This requires the identification of<br />
priorities on how MPAs and MPA network interactions/synergies can be put in place.<br />
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