Comparison of the phytoplankton species composition and structure in the Climax area (1973–1985) with that of station ALOHA (1994)
1997; Wiley; Volume: 42; Issue: 7 Linguagem: Inglês
10.4319/lo.1997.42.7.1643
ISSN1939-5604
Autores Tópico(s)Marine Biology and Ecology Research
ResumoIn August 1994, water samples were collected from seven depths on each of two casts at the Hawaiian Ocean Time‐series station (ALOHA; 22°45′N, 158°W). These samples allowed a comparison between the larger phytoplankton taxa at ALOHA and those in the Climax area (near 28°N, 155°W) that were collected during summers between 1973 and 1985. Of the 142 species found at ALOHA, all but 6 have been seen in the Climax area. The two‐layered structure that is typical of the Climax area was also found at station ALOHA, where the break between shallow and deep associations occurred between 100‐ and 135‐m depth. However, abundances of the deep species at ALOHA were lower than in the Climax area. The correlations between the rank order of abundances of phytoplankton from Sta. ALOHA and from the Climax area fell within the spectrum of correlations between pairs of stations from the Climax area. These results indicate that in August 1994 the phytoplankton at Sta. ALOHA was indistinguishable from that in the Climax area between 1973 and 1985. Nevertheless, many additional studies are needed before results from the Climax area or results from the Hawaiian Ocean Time‐series program can be unconditionally generalized.
Referência(s)