Download or read book The Status of Scleractinian Corals in Hong Kong and Their Conservation written by Manna Wan and published by . This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Status of Scleractinian Corals in Hong Kong and Their Conservation written by Manna Wan and published by . This book was released on 2001 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Status of Scleractinian Corals in Hong Kong and Theirconservation written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hong Kong s Scleractinian Coral Communities written by Denise McCorry and published by . This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Hong Kong's Scleractinian Coral Communities: Status, Threats and Proposals for Management" by Denise, McCorry, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. DOI: 10.5353/th_b3124347 Subjects: Scleractinia - China - Hong Kong - Identification Coral reef ecology - China - Hong Kong Coral reef conservation - China - Hong Kong
Download or read book Hong Kong s Scleractinian Coral Communities written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reproduction and Growth of Scleractinian Corals in Hong Kong written by Wai-Shan Christine Yeung and published by . This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reproduction and Growth of Scleractinian Corals in Hong Kong written by Wai-shan Yeung (Christine) and published by . This book was released on 2010 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Corals of Hong Kong written by P.J.B. Scott and published by Hong Kong University Press. This book was released on 1984-05-01 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive and up to date review and critique of corporate governance reforms and related financial reforms in China during the country's transition to a market economy, involving its enterprise, banking and capital markets sectors.
Download or read book The Recovery of Scleractinian Corals from Injuries in Tung Ping Chau Hong Kong written by Chi Kit Woo and published by . This book was released on 2005 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Baseline Demography and Bioerosion of Hong Kong Coral Communites written by Yiphung Yeung and published by . This book was released on 2019 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hong Kong provides a marginal marine environment for coral growth due to its high latitude in addition to massive freshwater run-off from the Pearl River Delta. Previous studies have reported that Hong Kong waters nurture 84 species of scleractinian corals in 28 families distributed in various locations, especially the protected bays in the eastern waters. However, very little is known about the benthic composition and health of coral communities. This study aimed to 1) determine the benthic composition of local coral communities and understand the environmental determinants of coral coverage and coral community composition; 2) record coral colony size frequency distribution across these 33 sites to understand the patterns of coral recruitment in recent years; 3) quantify coral bioerosion and corallivory by the long-spined sea urchin and explore the feasibility of remediating the coral damage by a coral-associated portunid crab. Surveys were conducted at 33 sites in Hong Kong, which cover sites with the highest coral coverages that are mainly located in the north-eastern, east and south-eastern waters. A belt-transect photo quadrant method was applied. 22 hard coral genera were identified, among which the genera Porites, Platygyra and Pavona were found to be the most abundant. Most of the study sites were dominated by few genera of massive corals which led to a low diversity. Coral coverage was negatively associated with nutrient levels including nitrogen, phosphorus and organic matter deposition rates based on sediment trap data. Apart from sedimentary parameters, coral coverage was also found to be strongly negatively correlated with the density of the long-spined sea urchin Diadema setosum. Study sites were categorized into four different conservation classes with sites of higher diversity assigned a higher conservation value. These data could serve as a baseline for measuring changes in benthic composition in the future, and as a reference for management planning such as designating new marine parks. Determining the size structure can help predict how a population may change in the future and whether conservation efforts are effective in promoting the increase in numbers of individuals. To determine coral size structure in local waters, a video transect method was adopted to capture videos on the benthic substrates of the 33 study sites. In the laboratory, the video clips were analyzed to extract information on the size and growth form of all coral colonies along the transects. Size-frequency distribution plots generally showed a highly positive skewness, which indicated a dominance of small-sized (i.e. 10 - 30 cm) colonies, yet low in recruitment-sized (i.e. 5 cm) colonies. An examination of the size distribution of the most common genera showed that the distribution patterns were more genus-dependent rather than site-dependent. Also, massive corals were the most dominant growth form, while branching corals were the least common which was different from healthy tropical reefs. Apart from establishing a baseline of coral communities, coral bioerosion was further studied. Previous studies found that coral coverage and urchin density were negatively correlated in local waters. Further, severe coral bioerosion had been reported to cause community-level coral damage in several locations. Therefore, impact coral bioerosion by the sea urchin Diadema setosum and whether such impact could be remediated were further investigated in a series of controlled experiments in the field. Although sea urchins were reported to prevent shifting from coral-dominant to algae-dominate phase elsewhere, they were found to cause severe tissue loss and bioerosion at high densities in my study. Thalamita prymna, a common portunid crab in local coral communities, was found to effectively reduce coral damages including bioerosion and surface mortality. Crab predation, an overlooked relationship in coral reefs, can thus be exploited to control urchin corallivory and bioerosion. Prohibiting fish trapping in reef areas could reduce the by-catch of these crabs and protect reefs against urchin attack.
Download or read book ECOLOGICAL SURVEY OF THE SCLER written by Margaret Anne Cope and published by Open Dissertation Press. This book was released on 2017-01-27 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "An Ecological Survey of the Scleractinian Coral Community at Hoi Ha Wan, Hong Kong" by Margaret Anne, Cope, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. DOI: 10.5353/th_b3120685 Subjects: Scleractinia Corals - China - Hong Kong
Download or read book An Ecological Survey of the Scleractinian Coral Community at Hoi Ha Wan Hong Kong written by Margaret Anne Cope and published by . This book was released on 1984 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spawning Larval Development and Recruitment of Scleractinian Corals in Tung Ping Chau Marine Park Hong Kong written by Pui Yi Chui and published by . This book was released on 2011 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reproduction Patterns of Scleractinian Corals from Tung Ping Chau Hong Kong and the Effect of Physical Factors on These Patterns written by Ting Pong Lin and published by . This book was released on 2003 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Growth and Population Dynamics of a Scleractinian Coral Oulastrea Crispata in Tung Ping Chau Hong Kong written by Wai Chun Ma and published by . This book was released on 2005 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mass Spawning of Scleractinian Corals in the Dampier Archipelago and the Implications for Management of Coral Reefs in Western Australia written by and published by . This book was released on 1985 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Ecology of Indigenous and Transplanted Corals in the Cape D Aguilar Marine Reserve Hong Kong written by Tracy Helen Clark and published by . This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "The Ecology of Indigenous and Transplanted Corals in the Cape D'Aguilar Marine Reserve, Hong Kong" by Tracy Helen, Clark, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Abstract Abstract of thesis entitled "THE ECOLOGY OF INDIGENOUS AND TRANSPLANTED CORALS IN THE CAPE D' AGUILAR MARINE RESERVE, HONG KONG" submitted by Tracy Helen Clark for the degree of Doctor of Philosophy at The University of Hong Kong in September 1997 A survey of the hermatypic and ahermatypic corals within the Cape d'Aguilar Marine Reserve, Hong Kong, identified twenty-two species of reef-building Scleractinia belonging to twenty genera and ten families and twenty-two species of ahermatypic corals belonging to fourteen genera and seven families. This list included three new records for Hong Kong, i.e., Leptoseris scabra (Scleractinia) and Echinogorgia complexa and Eleutherobia indica (Gorgonoidea). Species richness, abundance and percentage cover of scleractinians was greatest at the two most sheltered sites within the study area. Nineteen species of Scleractinia from sixteen genera and eight families were recorded from one site studied in the Hoi Ha Wan Marine Park. Representatives of the Faviidae dominated both locations at shallow depths although the gorgonian Euplexaura curvata was dominant in deeper waters within the marine reserve. The new scleractinian brings the species total for Hong Kong to fifty-one. In general, there was an increase in the abundance and diversity of corals with hard substratum availability and for, gorgonians, with increasing depth. Colony surface area and species distribution did not differ significantly, for hard corals, between 1995 and 1997. Monthly measurements of hydrographic parameters demonstrated seasonal and inter- site differences. Water movement was inversely related to percentage light transmission (PAR) and differed with site, as did salinity and dissolved oxygen (D.O.). Measurements of temperature, pH and total particulate matter (TPM) were similar at all sites. Temperature and TPM differed seasonally, being greater during summer than winter, as did salinity, D.O. and pH values though, conversely, higher in winter. Species of Diadema were the commonest coral grazers observed but at low densities at all sites and seasons. Overall, it can be concluded that survival, growth and tissue regeneration rates in transplanted corals and the reproductive effort of indigenous and transplanted colonies were dependent on environmental conditions at the study sites. With growth and tissue regeneration differing between species, the large polyped Favia speciosa and Goniastrea aspera showed the least growth and smaller polyped, Porites lobata, the most. Damage repair was retarded in transplants to exposed sites where attachment was only semi-secure. Favia speciosa and Goniastrea aspera were observed to be simultaneous hermaphrodites, with gametes reaching maturity around June/ July. Porites lobata was gonochoric, maturing in September/ October. Spawning is presumed to have occurred in these months, but no coral recruits were recorded during this study. Polyp size was related directly to egg size and inversely correlated with fecundity. The average monthly weight of recently living coral, washed up on Telecom Bay Beach in the Cape d'Aguilar Marine Reserve accounted for approximately 0.008 %, by weight of the total live coral in the bay with quantities greatest after typhoons and storms. Seventeen species of Mollusca were recorded from within the skeletons of this rubble and included a new record for Hong Kong, Anchomosa yoshimu
