. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. N t lagoon Fig 28. Western end of Rondik (Rongerik) Atoll showing Bok Island. Although this region was not visited during the 1988 survey, Bok is a suspected turtle nesting site. Scale: 1"= .9625 mi. 55 It is interesting to note that the shorelines of several islands and sand cays along the northeast rim of the atoll have undergone considerable change between 1944 and 1978 comparing earlier and later sets of aerial photographs. The island of Rondik shows minor accretion of the beach and vegetation along t
. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. N t lagoon Fig 28. Western end of Rondik (Rongerik) Atoll showing Bok Island. Although this region was not visited during the 1988 survey, Bok is a suspected turtle nesting site. Scale: 1"= .9625 mi. 55 It is interesting to note that the shorelines of several islands and sand cays along the northeast rim of the atoll have undergone considerable change between 1944 and 1978 comparing earlier and later sets of aerial photographs. The island of Rondik shows minor accretion of the beach and vegetation along the SW facing lagoon shoreline. However, the W tip of Rondik, the lagoon shorelines of two large islands (Patpat and Pikonaden), and several sand cays between the islands have undergone beach erosion and some receding of the vegetation line, especially along W and SW facing shorelines. Perhaps large waves or storms traversing the lagoon from the exposed W and SW directions were responsible for these shoreline modifications. Elsewhere on the atoll, beach and vegetation lines along the shorelines of islands have remained unchanged. The lagoon side of Ane-wetak Island has an unusually high sand dune (Fosberg, et al, 1956). According to Fosberg (1988) the island was also much disturbed by construction of a radio station involving bulldozing a strip across the center and a road along the length of the seaward coast prior to 1956 (Figure 28). Rondik's lagoon is fairly deep (maximum reported sounding of 28 fathoms or 51m) with many pinnacles and patch reefs which breach the sea surface. Most shallow lagoon reefs are patch reefs, circular or eliptical in shape and located in the eastern and central lagoon. Primarily deeper lagoon pinnacles are found in the western lagoon and are not as numerous or spatially dense. No soundings or bathymetric data are presented for the north and southwest extremities of the lagoon. The survey of Rondik was cut short due to a sudden medical emergency and
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