scholarly journals Changes in living coral coverage before and after the 1998 bleaching event on coral reef flats of Ishigaki Island, Ryukyu Islands

1999 ◽  
Vol 1999 (1) ◽  
pp. 73-82 ◽  
Author(s):  
H. Kayanne ◽  
S. Harii ◽  
H. Yamano ◽  
M. Tamura ◽  
Y. Ide ◽  
...  
Keyword(s):  
Coral Reef ◽  
Ryukyu Islands ◽  
Bleaching Event ◽  
Living Coral ◽  
Ishigaki Island ◽  
Coral Coverage ◽  
Before And After

Influence of wave energy on Holocene coral reef development: an example from Ishigaki Island, Ryukyu Islands, Japan

2003 ◽  
Vol 159 (1-2) ◽  
pp. 27-41 ◽  
Author(s):  
Hiroya Yamano ◽  
Osamu Abe ◽  
Eiji Matsumoto ◽  
Hajime Kayanne ◽  
Nobuyuki Yonekura ◽  
...  
Keyword(s):  
Coral Reef ◽  
Wave Energy ◽  
Ryukyu Islands ◽  
Reef Development ◽  
Ishigaki Island

scholarly journals Coral Reef Evolution at the Leeward Side of Ishigaki Island, Southwest Japan

Radiocarbon ◽  
2001 ◽  
Vol 43 (2B) ◽  
pp. 899-908 ◽  
Author(s):  
Hiroya Yamano ◽  
Osamu Abe ◽  
Hiroyuki Kitagawa ◽  
Etsuko Niu ◽  
Toshio Nakamura
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Leeward Side ◽  
Ryukyu Islands ◽  
Accumulation Rates ◽  
Southwest Japan ◽  
Reef Facies ◽  
Carbon 14 ◽  
Ishigaki Island ◽  
Reef Evolution

In comparison with windward coral reefs, the facies and evolution of leeward coral reefs has been discussed to a lesser extent. By accelerator mass spectrometry (AMS) carbon-14 dating of coral specimens collected from the trench excavated across a modern coral reef during a fishery port repair, we revealed the internal facies and Holocene evolution of a leeward reef in Ishigaki Island, Ryukyu Islands, southwest Japan. The reef facies can be split into three facies: the tabular Acropora framework facies, the tabular Acropora reworked facies, and the unconsolidated bioclast facies. The tabular Acropora reworked facies first formed a ridge by 3500 BR Then, the tabular Acropora framework facies grew both upward and seaward. The accumulation rates of the tabular Acropora framework facies ranged from 2.2 to 8.3 m/ka. Thus, the reef framework facies and accumulation rates of this leeward reef is similar to those of windward reefs, although the age of the reef top is younger than that of windward reefs.

scholarly journals On the small‐scale fractal geometrical structure of a living coral reef barrier

2020 ◽  
Vol 45 (12) ◽  
pp. 3042-3054 ◽  
Author(s):  
Damien Sous ◽  
Frédéric Bouchette ◽  
Erik Doerflinger ◽  
Samuel Meulé ◽  
Raphael Certain ◽  
...  
Keyword(s):  
Coral Reef ◽  
Geometrical Structure ◽  
Small Scale ◽  
Living Coral

Supplementary descriptions of Pergalumna amamiensis Aoki, 1984 (Acariformes, Galumnoidea) from Ryukyu Islands

Zootaxa ◽  
2019 ◽  
Vol 4647 (1) ◽  
pp. 378-384
Author(s):  
WATARU HAGINO ◽  
SATOSHI SHIMANO
Keyword(s):  
Body Length ◽  
Morphological Traits ◽  
Granular Structure ◽  
Surface Pattern ◽  
Ryukyu Islands ◽  
Body Width ◽  
Okinawa Island ◽  
Ishigaki Island ◽  
Circular Surface ◽  
Median Pore

A species of oribatid mites, Pergalumna amamiensis was collected from Amami-Ohshima Island, Ishigaki Island, and Okinawa Island, Southwestern Japan. The specimens were studied in detail, and supplementary descriptions are provided; these include features of the rostrum, the subcapitulum and the surface pattern of pteromorphs. The main morphological traits for this species are summarized as follows; body length 519–570 μm, body width 363–410 μm, rostral tip pointed, sensillus with a long stalk covered by minute barbs, porose areas Aa bulbous, porose areas A1, A2, and A3 circular, surface of pteromorphs ornamented by fine granular structure and dense wrinkles, fine granular structure on prodorsum, subcapitulum, genital plates and anal plates, median pore on the notogaster represented as single pore. 

Bathymetry, biota and sediments on the Hirota Reef, Tane-ga-shima ? the northernmost coral reef in the Ryukyu Islands

Island Arc ◽  
2006 ◽  
Vol 15 (4) ◽  
pp. 407-419 ◽  
Author(s):  
Emiko Ikeda ◽  
Yasufumi Iryu ◽  
Kaoru Sugihara ◽  
Hideo Ohba ◽  
Tsutomu Yamada
Keyword(s):  
Coral Reef ◽  
Ryukyu Islands ◽  
The Ryukyu Islands

scholarly journals Keanekaragaman dan Biomassa Ikan Karang serta Keterkaitannya dengan Tutupan Karang Hidup di Perairan Manggis, Kabupaten Karangasem, Bali

2018 ◽  
Vol 5 (2) ◽  
pp. 164
Author(s):  
I Made Raditya Putra ◽  
I Gusti Ngurah Putra Dirgayusa ◽  
Elok Faiqoh
Keyword(s):  
Coral Reef ◽  
Reef Fish ◽  
Coral Reef Fish ◽  
Coral Cover ◽  
Total Biomass ◽  
Live Coral ◽  
Strong Positive Correlation ◽  
Living Coral ◽  
Positive Correlation ◽  
Live Coral Cover

The existence of coral reef fish is closely related to the availability of coral reef resource as a habitat. Coral reef fish is a biota that has a fascination with a variety of color patterns and fascinating. Differences in coral cover conditions will affect the abundance of coral reef fish, especially those with strong linkages to living corals. This research was conducted in June - August 2017 by using line intercept transect (LIT) method for coral cover percentage and visual census method for biodiversity and biomass of coral reef fish with 3 research stations in Manggis waters, Karangasem. From the research results, it shows that the diversity index ranged between 2.54 - 2.70 which means the diversity of coral reef fish in the medium category and the stability of the community is in the medium. Furthermore, total biomass of coral reef fish ranged between 186,17 - 1692,08 kg / ha. The results stated that the percentage of live coral cover in Manggis waters ranged from 3.83% to 12.44% which means that live coral cover is categorized as bad. A very strong positive correlation between living coral conditions and coral reef fish biomass was 92.42%. Meanwhile, the relationship between living coral conditions and the diversity of coral reef fish had a strong positive correlation of 65.4%. The diversity of coral reef fish in waters is not only caused by live coral cover; however, it is caused by coral reef ecosystems that are associated in the bottom of the waters.

scholarly journals What Happens after Conservation and Management Donors Leave? A Before and After Study of Coral Reef Ecology and Stakeholder Perceptions of Management Benefits

PLoS ONE ◽  
2015 ◽  
Vol 10 (10) ◽  
pp. e0138769 ◽  
Author(s):  
Timothy R. McClanahan ◽  
Nyawira A. Muthiga ◽  
Caroline Abunge ◽  
Albogast T. Kamukuru ◽  
Eliezer Mwakalapa ◽  
...  
Keyword(s):  
Coral Reef ◽  
Stakeholder Perceptions ◽  
Coral Reef Ecology ◽  
Before And After ◽  
Before And After Study ◽  
Conservation And Management
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