. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. A major obstacle to understanding the ecological role of siphonaceous algae at Twin Cays has been the high biodiversity of the taxonomically problematical genera named above. Six distinct species ofAvrainvillea co-occur in the creeks, ponds and lakes of Twin Cays (Figs. 6,7). Using treatments prior to the beginning of this investigation (Taylor, 1960; Norris and Bucher, 1982), it would have been possible to discern only a small fraction of the taxa that are actually present. As one example, Avrainvillea longic
. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. A major obstacle to understanding the ecological role of siphonaceous algae at Twin Cays has been the high biodiversity of the taxonomically problematical genera named above. Six distinct species ofAvrainvillea co-occur in the creeks, ponds and lakes of Twin Cays (Figs. 6,7). Using treatments prior to the beginning of this investigation (Taylor, 1960; Norris and Bucher, 1982), it would have been possible to discern only a small fraction of the taxa that are actually present. As one example, Avrainvillea longicaulis f. longicaulis (Fig. 6) and the similar appearing A. mazei (Fig. 7) co-occur at Twin Cays as well as throughout lagoonal grass bed habitats and require precise discrimination (see misidentification of A. mazei, as A. longicaulis, on page 225 of Humann and DeLoach, 2002). In fact, there had been no serious systematic work on the group since the turn-of-the-century (Gepp and Gepp, 1911) with the. Figure 5. The paddle-like blades of the lagoon forms ofAvrainvillea (A) can rapidly translocate protoplasm to proliferate new epiphyte-free blades (B-natural epiphytes, C-mesh bag).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution. Press; National Research Council (U. S. ). Pacific Science Board; Smithsonian Institution; National Museum of Natural History (U. S. ); United States. Bureau of Sport Fisheries and Wildlife. Washington, D. C. : [Smithsonian Press]
Size: 1512px × 1653px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauth, bookauthorsmithsonianinstitutionpress, bookcentury1900
