Atoll Research Bulletin最新文献

{"title":"Abundance and community structure of reef building corals in Lakshadweep Islands, India","authors":"A. George","doi":"10.5479/SI.00775630.563.1","DOIUrl":"https://doi.org/10.5479/SI.00775630.563.1","url":null,"abstract":"Coral reefs were surveyed at three islands (Kavaratti, Kadmat and Agatti) of Lakshadweep during February 2005 using the Line Intercept Transect method. The percent coverage of coral in all the three islands was good (55%), dominated by Acropora spp. (33 %) of the live coral cover. Twenty three genera of corals are reported with two new records for the Lakshadweep islands. No apparent bleaching and crown-ofthorns starfish (COTS) related mortality of coral was observed in the three islands. The abundance and distribution of corals and associated biota were recorded along with the characterization of the benthic communities at these sites.","PeriodicalId":34898,"journal":{"name":"Atoll Research Bulletin","volume":"563 1","pages":"1-14"},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70938658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Diversity and Distribution of Bryozoans in the Pelican Cays, Belize, Central America","authors":"J. Winston","doi":"10.5479/SI.00775630.546.1","DOIUrl":"https://doi.org/10.5479/SI.00775630.546.1","url":null,"abstract":"Thirty-one species of bryozoans were found in mangrove communities in the \u0000Pelican Cays. Only in the large lagoon pond at Fisherman’s Cay was the dominant \u0000bryozoan a common Caribbean fouling species, Schizoporella pungens. At Northeast \u0000Cay, Ridge Cay, Manatee Cay, and Cat Cay, as well as the small lagoon ponds at \u0000Fisherman’s Cay, bryozoan species normally associated with shallow reef habitats \u0000formed extensive colonies on the submerged hanging roots of red mangroves along banks \u0000or undercuts bordering the lagoon ponds. Stylopoma sp., Steginoporella magnilabris, \u0000Trematooecia aviculifera, Hippopodina feegeensis, and Rhynchozoon verruculatum were \u0000the most abundant species overall. However, presence and relative abundance of these \u0000reef species varied from cay-to-cay. The overlapping thalli of Lobophora variegata \u0000covered much of the surface on vertical peat banks and on mangrove roots in well-shaded \u0000areas. The undersides of the thalli hosted a cryptic bryozoan fauna, consisting of delicate \u0000branching and encrusting colonies, which shared some species with both mangrove root \u0000and seagrass bryozoan assemblages. Eighteen species, including five undescribed species, \u0000were found in the Lobophora habitat.","PeriodicalId":34898,"journal":{"name":"Atoll Research Bulletin","volume":"546 1","pages":"1-24"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70938026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The 2004 Indian Ocean Tsunami in the Maldives: Scale of the Disaster and Topographic Effects on Atoll Reefs and Islands","authors":"H. Kan, Mohamed Ali, M. Riyaz","doi":"10.5479/SI.00775630.554.1","DOIUrl":"https://doi.org/10.5479/SI.00775630.554.1","url":null,"abstract":"","PeriodicalId":34898,"journal":{"name":"Atoll Research Bulletin","volume":"554 1","pages":"1-29"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70937921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Impacts of Coral Bleaching in Rodrigues, Western Indian Ocean","authors":"E. Hardman, N. Stampfli, L. Hunt, S. Perrine, A. Perry, J. Raffin","doi":"10.5479/SI.00775630.555.1","DOIUrl":"https://doi.org/10.5479/SI.00775630.555.1","url":null,"abstract":"Rapid assessments of the degree of coral bleaching were carried out at 22 sites around the coast of Rodrigues during March-april 2005 and april-May 2006. during 2005, coral bleaching was observed at all sites, but the worst affected sites were in the north and west of the island. Bleaching was most severe on the shallow reef flats at depths of 0.5–2m, but also occurred on the reef slopes down to depths of 5–6m. It is suggested that the bleaching occurred due to a combination of high sea temperatures, high solar illumination and exposure. the worst affected species were Acropora spp. and Porites rus; partial bleaching also affected massive coral colonies, soft corals, zoanthids and anemones. no coral bleaching was observed during the 2006 surveys and all sites had recovered from the bleaching except for totor in the north. at this site, dead standing coral cover was 5% and the site was dominated by turf algae. this site suffered from severe bleaching in 2002 and is also subjected to impacts from sedimentation and trampling, which may account for the mortality. there was a low abundance of coral recruits but a high abundance of the sea urchin, Echinometra mathaei, at this site, suggesting that recovery is limited and that erosion of the reef structure may occur. Rodrigues was also affected by coral bleaching during 2002 and bleaching occurred at other Western Indian ocean sites in 2002, 2003 and 2004. Rodrigues is a small, isolated island and if coral bleaching events continue to occur on such a frequent basis then this will affect the integrity of the reef structure, leaving the island vulnerable to coastal erosion and storm damage.","PeriodicalId":34898,"journal":{"name":"Atoll Research Bulletin","volume":"555 1","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"2007-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70937936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A decade of decline of massive corals in Florida patch reefs","authors":"E. Gischler","doi":"10.5479/SI.00775630.547.1","DOIUrl":"https://doi.org/10.5479/SI.00775630.547.1","url":null,"abstract":"Patch reefs are the most common reef type in the Florida Reef Tract, which represents the largest tropical reef area in the conterminous United States. Clusters of large massive corals of the Montastraea group form the backbone of these reefs and are of paramount importance as they provide habitat for a large variety of invertebrates and fish. Significant increases in dead surface area in clusters from 51% in 1995 to 67% in 2005 on average along the reef tract were observed during this long-term study. Even though the causes of decline are not entirely clear, the results are alarming because patch reefs are considered to be the reef type, which suffered the least decline in Florida in recent time.","PeriodicalId":34898,"journal":{"name":"Atoll Research Bulletin","volume":"547 1","pages":"1-12"},"PeriodicalIF":0.0,"publicationDate":"2007-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70938105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Radial growth rates of microatolls on a reef flat on Abaiang, Republic of Kiribati","authors":"C. J. Flora, P. S. Ely, A. R. Flora","doi":"10.5479/SI.00775630.552.1","DOIUrl":"https://doi.org/10.5479/SI.00775630.552.1","url":null,"abstract":"Disk-shaped coral colonies called microatolls have live coral tissue on their outer edges and nonliving centers. The upward growth of these structures is limited by the level of lower low water and the yearly outward growth in at least one species, Porites lutea, is recorded in the upper surface of the disks in the form of annuli. From March 1998 until August 2005, we used two different methods to assess radial growth rates of Porites lutea microatolls on the ocean reef fl at of Abaiang Atoll, Republic of Kiribati . We found that annual growth rates varied substantially during the 7.9 years of observation, from 0.7 to 2.6 cm/yr, with a mean of 1.6 cm/yr.","PeriodicalId":34898,"journal":{"name":"Atoll Research Bulletin","volume":"552 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2007-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70937857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Zooxanthellate Scleractinian Corals of the Northern Coast of Sulawesi","authors":"P. Scaps, V. Denis, S. Berhimpon, Frangky Runtukahu","doi":"10.5479/SI.00775630.553.1","DOIUrl":"https://doi.org/10.5479/SI.00775630.553.1","url":null,"abstract":"The coral reefs of the Pulisan region, located at the northeast of the island of Sulawesi in Indonesia, were studied in order to acquire information concerning their richness in zooxanthellate scleractinian corals. Twenty-one sites were thus prospected covering a total surface of 74 km2. In total, 376 species belonging to 65 genera and 14 families were observed during this study with an average-per-survey site of 109 species. Acropora, Montipora and Porites were the genera with the most species on Pulisan region reefs with 64, 24 and 23 species, respectively. Various estimates of the number of species suggest more than 400, making this area one of the most diversified in zooxanthellate scleractinian corals in the world for such a small area covered and placing it at the epicenter of the triangle of coral diversity.","PeriodicalId":34898,"journal":{"name":"Atoll Research Bulletin","volume":"553 1","pages":"1-21"},"PeriodicalIF":0.0,"publicationDate":"2007-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70937868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stomach contents and feeding observations of some Easter Island fishes","authors":"L. Disalvo, J. Randall, A. Cea","doi":"10.5479/SI.00775630.548.1","DOIUrl":"https://doi.org/10.5479/SI.00775630.548.1","url":null,"abstract":"","PeriodicalId":34898,"journal":{"name":"Atoll Research Bulletin","volume":"548 1","pages":"1-22"},"PeriodicalIF":0.0,"publicationDate":"2007-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70938116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Catastrophic coral mortality in the remote central Pacific Ocean: Kirabati Phoenix islands","authors":"A. Alling, Orla Doherty, H. Logan, L. Feldman, P. Dustan","doi":"10.5479/SI.00775630.551.1","DOIUrl":"https://doi.org/10.5479/SI.00775630.551.1","url":null,"abstract":"Quantitative and qualitative surveys in November-to-December 2004 revealed near 100% coral mortality in the lagoon of Kanton Atoll and 62% mortality on the outer leeward reef slopes of this island as well as elsewhere throughout the Kiribati Phoenix islands in the Central equatorial Pacific Ocean. most dead colonies were in growth position. Colonies were encrusted with coralline algae indicating they had been dead for 1 to 2 years, thus dying just after an expedition by the New england Aquarium in July 2002 which declared the region one of the most pristine reefs left in the Central Pacific. Fish populations did not seem reduced to the same levels as the stony corals but only 153 species of fish were identified at the study sites. Apex predators and key indicator fish species were present suggesting little impact from overfishing. Populations of invertebrates, now dominated by sponges, were also seemingly reduced inside the Kanton Atoll lagoon. Thirty-six species of living corals were identified along 480 m2 of transects. Five of eight coral genera represented <1% of the bottom cover. many of the living corals found were less than 10 cm in diameter suggesting recruitment has occurred since the mass mortality. bleaching Hot Spot Analysis by National Oceanographic and Atmospheric Administration / National environmental Satellite, Data, and information Service (NOAA/NeSDiS) satellite monitoring revealed a record high of 16 degree heating weeks (DHW) around the Phoenix islands between August 2002 and march 2003. The Kanton Atoll lagoon has a residence time approaching 50 days, there is no significant source of land-based pollution and there was no sign of any destructive fishing practices. Hence, the exposure to excessively high water temperatures for over six months killed the coralreef community of Kanton Atoll lagoon and caused the excessive loss of coral species and cover throughout the Phoenix island group. These observations provide further evidence that coral reefs in the most remote part of the Central Pacific Ocean are not isolated from the effects of global warming. __________________________ 1Planetary Coral Reef Foundation, P.O. box 201, Pacific Palisades, CA 90272. 2Department of biology, College of Charleston, SC 29424. Manuscript received 14 September 2005; revised 18 September 2006.","PeriodicalId":34898,"journal":{"name":"Atoll Research Bulletin","volume":"551 1","pages":"1-19"},"PeriodicalIF":0.0,"publicationDate":"2007-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70938241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tsunamis and coral reefs","authors":"D. Stoddart","doi":"10.5479/SI.00775630.544.1","DOIUrl":"https://doi.org/10.5479/SI.00775630.544.1","url":null,"abstract":"","PeriodicalId":34898,"journal":{"name":"Atoll Research Bulletin","volume":"544 1","pages":"1-164"},"PeriodicalIF":0.0,"publicationDate":"2007-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70937978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}