Effects of recreational SCUBA diving on fore-reef slope communities of coral reefs

1992 ◽  
Vol 62 (3) ◽  
pp. 171-178 ◽  
Author(s):  
Julie P. Hawkins ◽  
Callum M. Roberts
Keyword(s):  
Coral Reefs ◽  
Scuba Diving ◽  
Reef Slope ◽  
Fore Reef ◽  
Recreational Scuba

Decompression Sickness in Women Recreational Scuba Divers

1999 ◽  
Vol 8 (1) ◽  
pp. 47-54
Author(s):  
Jacalyn J. Robert
Keyword(s):  
High Altitude ◽  
Decompression Sickness ◽  
Scuba Diving ◽  
Training Center ◽  
Men And Women ◽  
Recreational Sport ◽  
Scuba Divers ◽  
Hyperbaric Environment ◽  
Recreational Scuba

Recreational sport diving is becoming an increasingly popular sport for women. Women now comprise approximately 25% of the diving community according to Divers Alert Network statistics. In the diving literature it has been stated that women are at a greater risk for decompression sickness than men. Most of these statements were derived from high-altitude (hypobaric environment) studies rather than from a scuba diving (hyperbaric) environment. Data from the naval diving and salvage training center were analyzed, and it was found that women are not more susceptible to decompression sickness than men during dives between 4 and 10 atmospheres. More specific studies on sport diving should be completed on factors contributing to underwater decompression sickness in both men and women.

BIODIVERSITI DAN PEMULIHARAAN TERUMBU KARANG DI TIGA BUAH PULAU, MELAKA (Biodiversity and Conservation of Coral Reefs in Three Islands in Malacca)

2021 ◽  
Vol 22 (1) ◽  
pp. 180-197
Author(s):  
SYAIMAK ISMAIL ◽  
MOHAMAD SAUPI BIN ISMAIL ◽  
MUHAMMAD SAIFUL ISLAM ISMAIL ◽  
AEMY AZIZ
Keyword(s):  
Coral Reefs ◽  
Biodiversity Conservation ◽  
Soft Coral ◽  
Good Condition ◽  
Scuba Diving ◽  
Field Studies ◽  
The State ◽  
Hard Coral ◽  
Wide Range ◽  
State Museum

In the state of Melaka, there are eighteen islands recorded by the Melaka State Museum Corporation (PERZIM). Part of this island serves as a tourist island, and developed islands are also uninhabited islands. However, three islands are recorded to have amazing coral reefs that are still in good condition. The Penang Batu Maung Fisheries Research Institute (AkuaTAR) has conducted a study on the biodiversity of coral reefs around the waters of Pulau Dodol, Pulau Serimbun, and Pulau Undan. AkuaTAR researchers are using scuba diving methods, and at the same time, they did conservation on coral reefs that have been identified in the waters of the Straits of Melaka. The objective of this study is to record the types of community forms such as living corals and identify the species of coral reefs found in three islands in the state of Melaka in Pulau Undan, Pulau Dodol, and Pulau Serimbun. The study also implemented method observation by conducting field studies on the islands involved by doing scuba diving. Results and discussion of the search, these three islands are located in very clean, uninhabited waters. They have a wide range of coral biodiversity using soft coral reefs and hard coral reefs. The study also found that the three islands in the state have the largest coral reefs in the waters of the Straits of Melaka. Keywords: Biodiversity; Conservation; Coral; Three island; Melaka

Spatial distribution of chaetodontid fish in coral reefs of the Ryukyu Islands, southern Japan

1999 ◽  
Vol 79 (4) ◽  
pp. 725-735 ◽  
Author(s):  
L. Cadoret ◽  
M. Adjeroud ◽  
M. Tsuchiya
Keyword(s):  
Species Richness ◽  
Coral Reefs ◽  
Reef Slope ◽  
Data Matrix ◽  
Ryukyu Islands ◽  
Southern Japan ◽  
The Ryukyu Islands ◽  
The World ◽  
Species Richness And Abundance ◽  
Reef Edge

The spatial patterns of butterflyfish assemblages (Chaetodontidae) were examined within and between five islands of the Ryukyu Archipelago, southern Japan. Despite being the northernmost reef communities in the world and despite the severe natural and human-induced disturbances that have affected them since the 1970s, the coral reefs of the Ryukyu Islands have one of the most diversified assemblages of chaetodontids in the world. A total of 30 species were identified, and species richness per island ranged from 20 to 25 species. On each of the 45 stations prospected, between four and 17 species were recorded, and between 0.75 and 21.75 ind 250 m−2 were counted. Variation in species composition, species richness and abundance between islands was less pronounced than the variation within islands, where assemblages of the major reef environments (i.e. the reef flat, the reef edge, and the reef slope) were distinguished. The highest species richness and abundance were found on the reef slope and the reef edge. Canonical correspondence analysis revealed that depth, substrate complexity, and live coral cover influenced the distribution of chaetodontid fishes. These factors accounted for 20% of the variation in the species data matrix.

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