Patterns of fucoid reproductive biomass allocation

Mathieson, Arthur C.; Guo, Zhangyang

doi:10.1080/00071619200650261

Cited by 46 publications

(38 citation statements)

References 90 publications

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“…This agrees with the results reported for many other brown algae such as F. spiralis (Roberston, 1987), Alaria nana (Pfister, 1992), Ascophyllum nodosum (Mathieson & Guo, 1992;Åberg, 1996) and S. muticum (Arenas and Fernández, 1998). The interpretation for the reproductive size-dependence in Hizikia could be that larger plants may generate a greater number of reproductive meristems per unit of vegetative biomass as in the case of S. muticum (Arenas & Fernández, 1998).…”

Section: Discussionsupporting

confidence: 81%

Seasonal Pattern of Reproduction Of Hizikia Fusiformis (Sargassaceae, Phaeophyta) from Nanao Island, Shantou, China

2006

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The maturation pattern of sexual reproduction in Hizikia fusiformis (Harvey) Okamura (Sargassaceae, Phaeaophyta) was examined in 2003 at Yunao Bay, Nanao Island, Shantou, China. Maturation began in mid-April (seawater temperature 19-21 • C), reached the peak in mid-May (maturation rate ca. 70%, and seawater temperature 23.5-25 • C) and finished in lateJune (seawater temperature 27.5-30 • C). The Hizikia plants continued to gain the length from the beginning of maturation season to reach a maximum mean length of 34.8 cm in mid-May, after which the mean length was reduced drastically due to the senescence and rupture of the larger plants in size. The major portion of the mature plants belonged to the larger plants between April and May, but to the smaller ones in June. It is suggested that the plant must achieve a critical size before reproductive maturation occurred. There was a positive relationship between the number of receptacles (NR), as well as the reproductive allocation (RA), and the plant size of Hizikia population, with the recorded

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Section: Discussionsupporting

confidence: 81%

Seasonal Pattern of Reproduction Of Hizikia Fusiformis (Sargassaceae, Phaeophyta) from Nanao Island, Shantou, China

2006

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“…Preliminary analyses of the population growth at the Isle of Man show that about 5 recruits m-' are all that is needed to get a positive growth. However, if the number of recruits is related to the large investment of reproductive biomass in A. nodosum (Cousens 1986, Mathieson & Guo 1992, Aberg 1996 recruitment success may be regarded as low, but a low cost of reproduction for large individuals has been indicated (Aberg 1996). Of the other variables studied, only the density of large individuals showed significant temporal variation, but there are no previous studies from which we can suggest an explanation for this.…”

Section: Discussionmentioning

confidence: 50%

Temporal and multiple scale spatial variation in juvenile and adult abundance of the brown alga Ascophyllum nodosum

Åberg¹,

Pavia²

1997

Mar. Ecol. Prog. Ser.

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Observation of spatial and temporal variation in the distribution and abundance of organisms is often the starting point from which questions and hypotheses about ecological processes arise. This study was designed to investigate spatial variability in abundance of macrorecruits and adults of the brown alga Ascophy11um nodosum using hierarchical sampling programs. Five spatial scales ranging from 10-' to 106 m \vere used, where the largest scale was represented by the distance between 2 areas, Tjarno on the Swedish west coast and the Isle of Man in the Irish Sea. Temporal variation was investigated separately over 3 spat~al scales as comparisons among the years from 1992 to 1995. Significant variation in abundance of 1.5 yr old juveniles was found on 2 spatial scales, 0.1 to 1.5 m and 2 to 30 m. A large variation among replicates suggested substantial variation on a smaller scale (10.15 m). There was no significant variation in the abundance of juveniles among years as suggested by earlier studies. The abundance of the adult population varied between areas but not on smaller spatial scales. There was a significant variation in the abundance of the adult population among years. The potential egg production in female individuals was also investigated as a means of relating the abundance of juveniles to fertility estimates. The number of eggs per conceptacle and the number of conceptacles per receptacle did not vary significantly among indiv~duals and the mean number of eggs per receptacle was estimated to be 7 X 10"he potential egg production was estimated to be 2.5 X log eggs a value much higher than previously reported for fucoids. Given the mean value of 40 juveniles m-', the transition probability from egg to juvenile was estimated to be 2 X 10-'

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“…Thus, the relationship between the numbers of receptacles and vegetative tips indicates the reproductive allocation (Bäck et al 1991, Kautsky et al 1992. The cost of gamete production, measured as biomass, is small in fucoids (Vernet and Harper 1980), but the thallus structures supporting reproduction are considered to be relatively costly (Mathieson and Guo 1992). Schiel (1985) suggested that the true cost of reproduction in fucoids must also take into account the vegetative structures that support the fertile material, and are produced and shed annually.…”

Section: Seasonal Reproduction and Reproductive Biomass Allocationmentioning

confidence: 99%

Seasonal variations of Fucus vesiculosus fertility under ocean acidification and warming in the western Baltic Sea

et al. 2017

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Ocean warming and acidification may substantially affect the reproduction of keystone species such as Fucus vesiculosus (Phaeophyceae). In four consecutive benthic mesocosm experiments, we compared the reproductive biology and quantified the temporal development of Baltic Sea Fucus fertility under the single and combined impact of elevated seawater temperature and pCO 2 (1100 ppm). In an additional experiment, we investigated the impact of temperature (0-25°C) on the maturation of North Sea F. vesiculosus receptacles. A marked seasonal reproductive cycle of F. vesiculosus became apparent in the course of 1 year. The first appearance of receptacles on vegetative apices and the further development of immature receptacles of F. vesiculosus in autumn were unaffected by warming or elevated pCO 2 . During winter, elevated pCO 2 in both ambient and warmed temperatures increased the proportion of mature receptacles significantly. In spring, warming and, to a lesser extent, elevated pCO 2 accelerated the maturation of receptacles and advanced the release of gametes by up to 2 weeks. Likewise, in the laboratory, maturation and gamete release were accelerated at 15-25°C relative to colder temperatures. In summary, elevated pCO 2 and/or warming do not influence receptacle appearance in autumn, but do accelerate the maturation process during spring, resulting in earlier gamete release. Temperature and, to a much lesser extent, pCO 2 affect the temporal development of Fucus fertility. Thus, rising temperatures will mainly shift or disturb the phenology of F. vesiculosus in spring and summer, which may alter and/or hamper its ecological functions in shallow coastal ecosystems of the Baltic Sea.

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Patterns of fucoid reproductive biomass allocation

Cited by 46 publications

References 90 publications

Seasonal Pattern of Reproduction Of Hizikia Fusiformis (Sargassaceae, Phaeophyta) from Nanao Island, Shantou, China

Seasonal Pattern of Reproduction Of Hizikia Fusiformis (Sargassaceae, Phaeophyta) from Nanao Island, Shantou, China

Temporal and multiple scale spatial variation in juvenile and adult abundance of the brown alga Ascophyllum nodosum

Seasonal variations of Fucus vesiculosus fertility under ocean acidification and warming in the western Baltic Sea

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