A Nutritional Analysis of a Sublittoral Diatom Assemblage Epiphytic on Enteromorpha From a Long Island Salt Marsh1,2

Lee, John J.; McEnery, M. E.; Kennedy, Eileen M.; Rubin, H. A.

doi:10.1111/j.0022-3646.1975.00014.x

Cited by 12 publications

(17 citation statements)

References 57 publications

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“…Main & McIntire (1974) stated that the host macrophytes in Yaquina Bay simply increase the surface area available to diatoms for attachment, and largely discounted the possibility of an epiphyte-host nutritive relationship . Lee et al (1975) studied the nutritional requirements of a diatom community epiphytic on Enteromorpha intestinalis (L .) Link in a Long Island salt marsh .…”

Section: Discussionmentioning

confidence: 99%

Structural characteristics of a diatom community epiphytic on Ruppia maritima

Sullivan

1977

Hydrobiologia

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Epiphytic diatoms were collected from both the leaves and internodes of Ruppia maritima in a New Jersey salt marsh during the growing season of the host plant . Community diversity (H' and the number of diatom taxa) values were initially high as Ruppia began its growth, but quickly dropped to sustained low levels as vegetative growth of the host ceased and new attachment sites were no longer available . A critical examination of all structural characteristics indicated that the leaves and internodes of Ruppia support a single, nearly homogeneous epiphytic diatom community . An analysis of variance indicated that differences between leaves and internodes were minimal, as did a comparison of the assemblages present on these two sites by a selected similarity index . A total of 57 taxa were encountered and the single dominant taxon was Navicula pavillardi, which accounted for one out of every three individuals counted . A comparison of the epiphytic diatom community with those inhabiting the sediments on the marsh proper revealed that the marsh sediments were the major source of individuals for Ruppia colonization .

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Section: Discussionmentioning

confidence: 99%

Structural characteristics of a diatom community epiphytic on Ruppia maritima

Sullivan

1977

Hydrobiologia

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“…Algae chosen were either those shown in previous nutritional studies to be good for other species of foraminifera (reviewed by Lee 1974) or those that were abundant on Halophila stipulacea leaves, which also harbored Amphisorus hemprichii and Amphistegina lobifera (Lee et al 1988 (Lee et al 1975), then grown as axenic cultures in Erdschreiber medium. They were harvested by centrifugation and resuspended in seawater.…”

Section: Methodsmentioning

confidence: 99%

“…P 1-1 (as NaH2PO4) and 1/~g-at. N a 1-1 (as NaNO3), or (2) artificial seawater (Lee et al 1975, adjusted to pH 8.1, salinity 40%0, and concentrations of NaNO a and NaH2PO 4 as above). A mixture of the algae Amphora sp., Chlorella sp.…”

Section: Methodsmentioning

confidence: 99%

Nutritional and related experiments on laboratory maintenance of three species of symbiont-bearing, large foraminifera

et al. 1991

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Abstract. Factors were examined that affect survival and growth of two common species of large foraminifera from the Red Sea, Amphisorus hemprichii Ehrenberg and Amphistegina lobifera Larsen, 1976. The former is host for dinoflagellate and the latter for diatom zooxanthellae. Experimental conditions were modeled on conditions at 25 m during spring at Wadi Taba, Gulf of Elat, Israel, the season and site where the experimental organisms were collected between 1983 and 1988. The two species responded quite differently in nutritional experiments.A. hemprichii grew, on average, 0.270 mm in diameter in 3 mo on a diet of Nitzschia subcommunis Hustedt, Chlorella sp. (clone AT) or Cylindrotheca closterium Rabenhorst isolated from their native habitat. Unfed controls did not grow. In contrast, unfed populations of A. lobifera grew as well or better than those that were fed unialgal diets. Growth of both species was enhanced on particular mixed algal diets. Both species required photosynthetically active symbionts. Even when fed weekly and supplied with nutrients, neither species survived in the dark. All individuals of A. hemprichii died after 8 wk incubation in the dark; A. lobifera survived longer, but all were dead by 13 wk. The highest growth rate of A. hemprichii (0.037 mm wk-1) was obtained when they were fed, the medium was enriched, and the medium was changed weekly. All other conditions being the same, growth rate dropped to 0.009 mmwk -1 when the medium was changed every 3 wk. In contrast, A. lobifera grew fastest when the medium was changed every 3 wk. Food or enrichment with nitrate or phosphate did not stimulate growth (0.03 mm wk-1) over that of the controls. Specimens of Marginopora kudakajimensis Gudmundsson from Japan, another dinoflagellate-bearing species, were also tested. They grew best (0.02 mm wk-t) when cultured in light, in media enriched with nitrate and phosphate changed weekly, and fed. All three species withdrew nitrate and phosphate from the medium in chemostat experiments.

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“…3). The subzone MD~-a was characterized by the occurrence of C. scutellum, which is one of the sublittoral epiphytes on Enteromorpha (Lee et al, 1975) and one of the primary colonizers on Zostera marina (Sieburth and Thomas, 1973). Sekiya and Kumano (1983) reported C. scutellum as a living diatom from the brackish Kutcharo Lake (Ohnuma).…”

Section: Diatom Assemblages and Sedimentary Environmentsmentioning

confidence: 99%

Holocene sedimentary history of some coastal plains in Hokkaido, Japan V. Sedimentary history of Kushu Lake and Akkeshi

Kumano

Ihira²,

Kuromi

et al. 1990

Ecological Research

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Diatom assemblages of sediments obtained from Kushu Lake and Akkeshi were analyzed in order to clarify the local Holocene sedimentary history. The results revealed the following: 1) Sometime before about 9000 yr B.P., Kushu Lake was originally a freshwater environment. 2) The first marine diatom zone (MD1 Zone) was deposited on the bottom of the paleo-Kushu Bay between 8500 and 6000 yr B.P. 3) This site changed to become the bottom of the paleo-Kushu Lagoon around 6000 yr B.P. owing to the formation of a bay-mouth bar across the paleo-Kushu Bay and the first Holocene regression resulted in a freshwater lake at about 4500 yr B.P. 4) At this time, the Akkeshi site changed from a sublittoral shore in a drowned valley to a peat moor. 5) The second Holocene transgression at about 3000 yr B.P. was detected at the Akkeshi site. 6) At Kushu Lake site the occurrence of Mastogloia elliptica between 7000 and 5000 yr B.P.suggested the influx of the Tsushima warm current into the Japan Sea.

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A Nutritional Analysis of a Sublittoral Diatom Assemblage Epiphytic on Enteromorpha From a Long Island Salt Marsh1,2

Cited by 12 publications

References 57 publications

Structural characteristics of a diatom community epiphytic on Ruppia maritima

Structural characteristics of a diatom community epiphytic on Ruppia maritima

Nutritional and related experiments on laboratory maintenance of three species of symbiont-bearing, large foraminifera

Holocene sedimentary history of some coastal plains in Hokkaido, Japan V. Sedimentary history of Kushu Lake and Akkeshi

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