The Temporal and Spatial Distribution of Foraminiferans in Marine Benthic Sediments of the Clyde Sea Area, Scotland

Hannah, Fiona; Rogerson, Andrew

doi:10.1006/ecss.1996.0136

Cited by 43 publications

(28 citation statements)

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“…Subsurface movement in 'ant farm' aquaria by unidentified Bathysiphon spp. recovered from sublittoral and bathyal sites (water depths from <100 to 900 m) has been reported by several authors (Hannah & Rogerson 1997, Gross 1998, 2000, Heinz 1999). Rates of movement ranged from < 2.5 to 7.3 µm min -1 .…”

Section: Autecologysupporting

confidence: 55%

“…Previous field (Christiansen 1971, Gooday et al 1992a) and laboratory (Hannah & Rogerson 1997, Gross 1998, 2000, Heinz 1999) observations suggest that some Bathysiphon species protrude above the sediment surface, while others live below the sediment-water interface. At our study site, B. capillare clearly occupies an infaunal microhabitat within the upper 5 cm of sediment.…”

Section: Autecologymentioning

confidence: 96%

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Ecology and nutrition of the large agglutinated foraminiferan Bathysiphon capillare in the bathyal NE Atlantic: distribution within the sediment profile and lipid biomarker composition

Gooday¹,

Pond²,

Bowser³

2002

Mar. Ecol. Prog. Ser.

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The large agglutinated foraminiferan Bathysiphon capillare de Folin (Protista) was an important component of the macrofauna in box core samples recovered at a 950 m site on the southern flank of the Wyville-Thomson Ridge, northern Rockall Trough. The long, narrow, very smooth, flexible tubes of B. capillare reached a maximum length of almost 10 cm. Densities ranged from 100 to 172 ind. m -2 , a figure that represents at least 5 to 9% of metazoan macrofaunal densities. This infaunal species usually adopted a more or less horizontal orientation within the upper 5 cm layer of brownish sandy silt. Its cytoplasm yielded a diverse spectrum of fatty acids. These included various monounsaturated fatty acids (39% of total), mainly 18:1(n-7), 20:1(n-9) and 22:1(n-7), the polyunsaturated fatty acids (PUFA) 20:4(n-6), 20.5(n-3) and 22.6(n-3), and non-methylene diene-interrupted fatty acids (NMIDS), particularly 22:2∆7,13 and 22:2∆7,15. The spectrum of PUFAs is consistent with the ingestion by B. capillare of phytodetrital material. However, the presence of NMIDS, reported here for the first time in a protist, provides evidence for a substantial bacterial component in the diet. Viewed by scanning electron microscopy (SEM), the cytoplasm occupied a narrow space between the inner organic test lining and an inner core of detritus around which it formed a sheath. The core material included numerous spherical structures (2 to 10 µm diameter) that we interpret as stercomata (waste pellets composed largely of mineral grains). Taken together, our observations suggest that B. capillare is a deposit feeder, consuming sediment, detritus and associated bacteria. Other deep infaunal foraminiferans probably have a similar diet, leading us to speculate that these protists, which are often abundant in dysoxic settings, may contribute significantly to carbon cycling in the deep sea. Since B. capillare and similar large Bathysiphon species can be recovered in good condition from bathyal depths, they may prove to be ideal experimental subjects for addressing some fundamental issues in the lipid biochemistry of deep-sea benthic organisms.

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Section: Autecologysupporting

confidence: 55%

Section: Autecologymentioning

confidence: 96%

Ecology and nutrition of the large agglutinated foraminiferan Bathysiphon capillare in the bathyal NE Atlantic: distribution within the sediment profile and lipid biomarker composition

Gooday¹,

Pond²,

Bowser³

2002

Mar. Ecol. Prog. Ser.

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“…Studies of locomotion have dealt with the cytochemical mechanisms or general biology of the reticulopodial network engaged in the movement (see review by Travis & Bowser, 1991). Only few ecological studies exist and they concentrate either on the survival of foraminifera to oversedimentation (Severin, 1987) or on the ecology of foraminifera from shallow water depths (Severin & Erskian, 1981;Severin et aI., 1982;Kitazato, 1988;Bornmalm et aI., 1997;Hannah & Rogerson, 1997).…”

Section: Introductionmentioning

confidence: 99%

Influence of temperature, oxygen and food availability on the migrational activity of bathyal benthic foraminifera: evidence by microcosm experiments

Groß¹

2000

Life at Interfaces and Under Extreme Conditions

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Foraminifera are a dominant group of amoeboid protists in the deep-sea and play possibly a significant role in decomposition processes of incoming organic matter. In order to study the poorly known ecology of these protozoans, microcosm experiments with living bathyal benthic foraminifera have been conducted. Foraminifera from 2880 m and shallower water depths were successfully maintained and their movement patterns investigated. By video documentation, high mean migration speed of 20,02 (N = 22) and 24,48 /Lm min-1 (N = 10) at 4 DC were found for species such as Hoeglundina elegans and Quinqueloculina seminula from 1847 m and 1921 m water depth, respectively. The results demonstrate that some bathyal foraminifera have migration speeds comparable to those of shallow water species. Environmental factors such as temperature, food concentration and oxygen content showed a marked influence on the migration of some species. An increase in temperature from 10 DC to 15 DC resulted in an increase of 35% in the migration speed of Allogromia spp. However, other species reacted differently. Higher food concentration resulted in a decrease in speed of some species. While in Quinqueloculina lamarckiana speed was not greatly affected by a low oxygen content in the sediment, other foraminifera responded to oxygen depletion by migration to the surface layers. Observations of benthic foraminifera in the laboratory microcosms are discussed in relation to microhabitats and the fate of organic matter on the sea floor and in the sediment.

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“…INTRODUCTION Benthic foraminifera are frequently focus of paleoecological studies since they are generally abundant, well preserved, and their geographical and depth distribution have great importance in paleoenvironmental, paleoceanographical, and paleobathymetrical interpretations as well as in temperature oscillations studies (Carvalho 1980, Hannah & Rogerson 1997. On the Quaternary they are an appropriate material for different studies in biological, geological, and oceanographic sciences (Boltovskoy 1965, Scott et al 2001, Barbosa et al 2005.…”

mentioning

confidence: 99%

“…On the Quaternary they are an appropriate material for different studies in biological, geological, and oceanographic sciences (Boltovskoy 1965, Scott et al 2001, Barbosa et al 2005. Studies on living foraminiferal fauna still far less evident in literature have been done recently in order to understand ecological distributional and latitudinal patterns following a coast-ocean gradient (Sen Gupta 1999), once foraminifera have been shown to be important food items for macrobenthos (Hannah & Rogerson 1997, Capriulo 1990, Murray 1991, Berry 1994, and to interact symbiotically with algae (Lee & Anderson 1991, Hallock 2000, Hallock et al 2004.…”

mentioning

confidence: 99%

Distribution of Macrobenthic Foraminifera on Brazilian Continental Margin Between 18ºs – 23ºs

Oliveira‐Silva

Barbosa

Soares-Gomes

2005

RBG

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The Temporal and Spatial Distribution of Foraminiferans in Marine Benthic Sediments of the Clyde Sea Area, Scotland

Cited by 43 publications

References 0 publications

Ecology and nutrition of the large agglutinated foraminiferan Bathysiphon capillare in the bathyal NE Atlantic: distribution within the sediment profile and lipid biomarker composition

Ecology and nutrition of the large agglutinated foraminiferan Bathysiphon capillare in the bathyal NE Atlantic: distribution within the sediment profile and lipid biomarker composition

Influence of temperature, oxygen and food availability on the migrational activity of bathyal benthic foraminifera: evidence by microcosm experiments

Distribution of Macrobenthic Foraminifera on Brazilian Continental Margin Between 18ºs – 23ºs

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