Contribution of Receptacles from the Fucoid Ascophyllum nodosum to the Detrital Pool of a North Temperate Estuary

Josselyn, Michael; Mathieson, Arthur C.

doi:10.2307/1351529

Cited by 37 publications

(15 citation statements)

References 6 publications

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“…6, 7) was particularly evident during the precipitous loss of AscophyUwn in September by "storm pruning" (Baardseth 1970), äs well äs its subsequent winter decrease and re-enhanced growth during March to August (except June). The decrease in total biomass in June was probably caused by the dehiscence of fertile receptacles on A. nodosum, äs previous studies have indicated they are lost within a single month and that they account for approximately 50% of the plant's total weight (Josselyn and Mathieson 1978). The dramatic loss of A. nodosum during September of both years was associated with a ' conspicuous increase in the unattached ecad scorpioides in September-November.…”

Section: Discussionmentioning

confidence: 63%

Variations of New England Estuarine Seaweed Biomass

Chock¹,

Mathieson²

1983

Botanica Marina

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Seasonal and spatial biomass variations of estuarine intertidal macrophytes were recorded for 15 consecutive months at Cedar Point, Little Bay, New Hampshire, U.S.A. A typical seasonal cycle was recorded with maximum summer biomass (136-168 g dry weight 0.1 m~2) and minimum winter values (34-48 g dry weight 0.1 m~2), due to extensive ice scouring. A summary of temporal and spatial biomass variations of 5 Rhodophyceae, 8 Chlorophyceae and 7 Phaeophyceae is given. The stratified vertical distribution of Ascophyllum nodosum and its unattached ecad scorpioides are described in detail. Ascophyllum nodosum, the unattached ecad scorpioides and Fucus vesiculosus var. spiralis contributed 98.2-99.9% (x = 98.3%) ofthe macrophytic plant biomass during each ofthe 15 months. The species richness and productivity of seaweeds at Cedar Point are interpreted in relation to a variety of environmental parameters.

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Section: Discussionmentioning

confidence: 63%

Variations of New England Estuarine Seaweed Biomass

Chock¹,

Mathieson²

1983

Botanica Marina

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“…The increase in the vegetative standing crop with increasing shelter has been noted for Ascaphyllum nadasum (COUSENS 1986). JOSSELYN & MATHIESON (1978) estimated that R.A. of Ascaphyllum is c. 50 % and hence higher than in any population of Fucus vesiculasus so far studied. Fucus spiralis contributed c. 25 % of its biomass to receptacles at peak fertility time and only the Scarlett Point population of Fucus vesiculasus showed higher values than that.…”

Section: Resultsmentioning

confidence: 83%

Comparative reproductive biology of the Gulf of Finland and the Irish SeaFucus vesiculosusL.

Bäck

Collins

Russell

1993

Sarsia

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“…in the population s a whole changes with time and decreases significantly between September and November (Fig. ca 50% and the contribution by receptacles to the detrital pool is estimated to be 445 g m~2 y" 1 (Josselyn and Mathieson, 1978). This decrease results from changes in the fertility of the population (Table I) which becomes progressively more vegetative due to '" b°th fr°nd αβη5 («cnri«™«t of Sterile In Ascophyüum nodosum the reproductive proportion of the Standing crop is somewhat higher viz.…”

Section: Rmentioning

confidence: 96%

Reproductive Ecology and Canopy Structure of Fucus spiralis L.

Robertson¹

1987

Botm

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The autocology of the intertidal brown alga, Fucus spiralis was studied at Ketch Harbour, Canada. In particular, aspects investigated included fecimdity, reproductive allocation (R. A.), recruitment and changes in canopy structure which result from reproduction.Peak fertility occurred in September, at which time strong positive correlations exist between frond mass and both receptacle mass and number. A mean fecundity of 284.6 eggs m~2 was estimated, but correlations between frond mass and fecundity are Iow. R. A., which is dependent on frond mass, reaches a maximum of 30% in September in fronds with a mass of more than 4g. A significant decrease in R. A. occurred after September.During September to November, attrition of receptacles and old fertile blades occurs. These changes result not only in the reduction of biomass, but more importantly, in a significant change in biomass distribution within the canopy. Concomitantly, a rapid recruitment of fronds occurs. It is postulated that this recruitment is partially, if not largely due to a reduction in shading by the overstorey of the canopy.The aims of this study were thus a) to determine the total reproductive proportion (R. A.) of the Standing crop of F. spiralis, rather than just the biomass of gametes äs reported by Vernet and Harper (1980); b) to determine the fecundity of this species; Botanica Marina / Vol. 30 / 1987 / Fase. 6

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Contribution of Receptacles from the Fucoid Ascophyllum nodosum to the Detrital Pool of a North Temperate Estuary

Cited by 37 publications

References 6 publications

Variations of New England Estuarine Seaweed Biomass

Variations of New England Estuarine Seaweed Biomass

Comparative reproductive biology of the Gulf of Finland and the Irish SeaFucus vesiculosusL.

Reproductive Ecology and Canopy Structure of Fucus spiralis L.

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