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The ecology of plantonic ciliates in Southampton Water.

The ecology of plantonic ciliates in Southampton Water.
The ecology of plantonic ciliates in Southampton Water.

The abundance, carbon and nitrogen standing stocks and production of marine pelagic ciliate populations was determined at monthly intervals at two stations, Calshot and N.W.Netley in Southampton Water during the period June 1986 to June 1987. Enumeration of ciliates was based on fixed counts. Comparisons of four fixatives, Bouin's solution, Lugol's iodine solution, formaldehyde and glutaraldehyde revealed Lugol's to be superior fixative for the maintainance of ciliate numbers and cell volume. A total of 55 ciliate morpho-types were identified throughout the sample period. Ciliate abundance and standing stocks were greatest at both stations during June to September 1986 and May and June 1987, with respective maxima of 16129 litre-1 and 219 g C litre-1 recorded at N.W.Netley. Abundances and standing stocks were generally greater at N.W.Netley than at Calshot, with aloricate forms dominating the ciliate communities at both stations during most months. The productivity of the ciliate community at Calshot and N.W.Netley was determined using a growth: cell volume/temperature relationship derived from the literature. The validity of the relationship was tested against ciliate growth rates measured in situ using polycarbonate incubation chambers. Ciliate community production ranged from 0.4 to 18 g C litre-1 day-1 at Calshot and 0.3 to 141 g C litre-1 day-1 at N.W.Netley. The trophic role of ciliates in Southampton Water is discussed.

University of Southampton
Leakey, Raymond James Gray
6deecc84-7c86-4b35-a6c5-fc21e593a3c1
Leakey, Raymond James Gray
6deecc84-7c86-4b35-a6c5-fc21e593a3c1

Leakey, Raymond James Gray (1990) The ecology of plantonic ciliates in Southampton Water. University of Southampton, Doctoral Thesis.

Record type: Thesis (Doctoral)

Abstract

The abundance, carbon and nitrogen standing stocks and production of marine pelagic ciliate populations was determined at monthly intervals at two stations, Calshot and N.W.Netley in Southampton Water during the period June 1986 to June 1987. Enumeration of ciliates was based on fixed counts. Comparisons of four fixatives, Bouin's solution, Lugol's iodine solution, formaldehyde and glutaraldehyde revealed Lugol's to be superior fixative for the maintainance of ciliate numbers and cell volume. A total of 55 ciliate morpho-types were identified throughout the sample period. Ciliate abundance and standing stocks were greatest at both stations during June to September 1986 and May and June 1987, with respective maxima of 16129 litre-1 and 219 g C litre-1 recorded at N.W.Netley. Abundances and standing stocks were generally greater at N.W.Netley than at Calshot, with aloricate forms dominating the ciliate communities at both stations during most months. The productivity of the ciliate community at Calshot and N.W.Netley was determined using a growth: cell volume/temperature relationship derived from the literature. The validity of the relationship was tested against ciliate growth rates measured in situ using polycarbonate incubation chambers. Ciliate community production ranged from 0.4 to 18 g C litre-1 day-1 at Calshot and 0.3 to 141 g C litre-1 day-1 at N.W.Netley. The trophic role of ciliates in Southampton Water is discussed.

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Published date: 1990

Identifiers

Local EPrints ID: 460683
URI: http://eprints.soton.ac.uk/id/eprint/460683
PURE UUID: 63c7d9f8-f0be-440c-9678-93cad3d3db10

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Date deposited: 04 Jul 2022 18:27
Last modified: 23 Jul 2022 00:58

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Contributors

Author: Raymond James Gray Leakey

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