Competition in Seaweeds: Linking Plant Traits to Competitive Outcomes

Olson, Annette M.; Lubchenco, Jane

doi:10.1111/j.0022-3646.1990.00001.x

Cited by 52 publications

(29 citation statements)

References 35 publications

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“…Interactions between the 2 introduced species and the native flora have been experimentally investigated (Ceccherelli & Cinelli 1997, 1999a, Ceccherelli et al 2000. Competitive ability of the 2 congener species could be similar if this was based on plant traits (Olson & Lubchenco 1990). Both species have stolons which are able to quickly elongate, easily overgrow other macroalgal species (Meinesz et al 1995, Piazzi et al 1997 and have a high potential of dispersal by fragmentation and re-establishment of stolons (Ceccherelli & Cinelli 1998.…”

Section: Introductionmentioning

confidence: 99%

Effects of competition between two introduced Caulerpa

Piazzi¹,

Ceccherelli²

2002

Mar. Ecol. Prog. Ser.

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Competitive interactions between 2 introduced algae, Caulerpa taxifolia and C. racemosa, were studied in 2 experiments. The first separately evaluated the interspecific and intraspecific effects on both species by manipulating their abundance. The second investigated the fate of fragments of C. taxifolia transplanted into patches of C. racemosa, in contrast to those established on algal turfs. C. racemosa and C. taxifolia had similar temporal trends in growth but reached different sizes. The overall increase in stolon length at higher densities for both species suggested that positive interactions are very important. However, there was a significant interspecific effect on C. taxifolia stolon length but no effect on C. racemosa. Furthermore, C. taxifolia fragments transplanted into C. racemosa patches showed clear signs of stress with respect to those transplanted into algal turfs: blades became blanched and eroded. Overall, the results of this study suggest that growth increases with density augmentation, therefore suggesting that invasive characteristics of the species may increase with the time of colonisation. Both species tend to spread faster at higher density. Overall, where both species co-occur, we predict that C. racemosa would be the favoured species as regards the outcome of competition.

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Section: Introductionmentioning

confidence: 99%

Effects of competition between two introduced Caulerpa

Piazzi¹,

Ceccherelli²

2002

Mar. Ecol. Prog. Ser.

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“…These experiments showed that resource competition can structure simple laboratory 'communities', and that the outcome of competition may change along a nutrient gradient. Competition between species of macroalgae has also been established (Carpenter 1990, Maggs & Cheney 1990, Olson & Lubchenco 1990, Paine 1990. However, few studies address competition between different groups of algae (but see Smith & Horne 1988).…”

Section: Introductionmentioning

confidence: 99%

Competition with macroalgae and benthic cyanobacterial mats limits phytoplankton abundance in experimental microcosms

Fong¹,

Donohoe²,

Zedler³

1993

Mar. Ecol. Prog. Ser.

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Competition for nutrients among estuarine phytoplankton and algal mats (a combination of floating and attached green macroalgae and attached cyanobacterial mats) was studied using replicate expenmental microcosms. At high nutnent loading (nitrate-N = 77 F M d -l ) , the growth of phytoplankton was reduced by a factor of 10 in the presence of the algal mats. Without the algal mats the phytoplankton was very abundant (> 5 X 106 cells rill-l) and dominated by small flagellates, while in the presence of the algal mats the phytoplankton assemblage was sparse and diatoms, flagellates, and unicellular blue-greens were common. The competition hierarchy was cyanobacterial mats >> attached green macroalgae > floating green macroalgae > phytoplankton. When nutrient supply rate was low (nitrate-N = 1.2 pM d-l), the presence of the algal mats shifted the phytoplankton from flagellates to blue-green algae, but did not affect total biomass of the phytoplankton. We conclude that the attached forms of macroalgae as well as the cyanobacterial mats were better competitors for high levels of nutrients than the phytoplankton. This resource competition may explain the negative correlation found in field studes between phytoplankton and macroalgae growing in shallow nutrient-enriched estuaries.

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“…Other studies on nearshore benthic communities have found that the distribution and abundance of benthic organisms can vary depending on the island habitat (VROOM et al, 2010), and additional studies have emphasized the influence of spatial scale on that variability (BENEDETTI-CECCHI, 2001;SANGIL et al, 2011). According to the literature, different physical and biological factors can shape the structure of macroalgal assemblages, including wave action (BUSTAMANTE; BRANCH, 1996), substratum heterogeneity, light availability (KENDRICK et al, 1999;TOOHEY et al, 2007), predation (MENGE;LUBCHENCO, 1981), competition (OLSON; LUBCHENCO, 1990) and facilitation (MENGE, 2000). The present study, however, did not aim to determine the causal factors underlying the described structural differences.…”

Section: Discussionmentioning

confidence: 99%

The Structure of Subtidal Macroalgal Assemblages at the Tamoios Ecological Station, a Threatened Conservation Unit in Rio De Janeiro, Brazil

2015

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The structure of subtidal rocky bottom communities at Tamoios Ecological Station (TES), situated in Ilha Grande Bay, Rio de Janeiro State, as well as in other Brazilian marine protected areas, is insufficiently characterized. The present study describes the macroalgal assemblages of shallow subtidal rocky bottoms on two islands of the TES-Imboassica (IM) and Búzios Pequena (BP)adopting species and genera as observational units. Two sites were surveyed on each island in summer 2011. Random 30x30 cm quadrats (n=3) were scraped to collect all macroalgae except crustose species. The subtidal assemblages, in which 58 macroalgal species occurred, were characterized by the high frequency and percent cover of Sargassum vulgare C. Agardh (56.8±8.4%). The sites differed significantly in total number of species and Shannon-Weiner diversity index (PERMANOVA, p<0.05). According to SIMPER, the macroalgal genera that most contributed to the dissimilarities of cover between the sites (contribution >5%) were Sargassum, Laurencia, Wrangelia, Canistrocarpus, Asparagopsis, Hypnea, Ceratodictyon, Gayliella, Spyridia and Chondria.Dissimilarities within and between the islands, as shown by nMDS of the cover data, suggest that different spatial scales should be considered in monitoring the rocky bottom communities of Ilha Grande Bay.

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Competition in Seaweeds: Linking Plant Traits to Competitive Outcomes

Cited by 52 publications

References 35 publications

Effects of competition between two introduced Caulerpa

Effects of competition between two introduced Caulerpa

Competition with macroalgae and benthic cyanobacterial mats limits phytoplankton abundance in experimental microcosms

The Structure of Subtidal Macroalgal Assemblages at the Tamoios Ecological Station, a Threatened Conservation Unit in Rio De Janeiro, Brazil

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