Life Cycle and Population Structure of the Polychaete Ficopomatus enigmaticus (Serpulidae) in Mar Chiquita Coastal Lagoon, Argentina

Obenat, Sandra; Pezzani, Silvia E.

doi:10.2307/1352574

Cited by 46 publications

(33 citation statements)

References 20 publications

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“…This reef-forming species has been reported in estuaries of the eastern South Atlantic since the mid19th century (Brankevich et al 1988;Obenat and Pezzani 1994;Borthagaray et al 2006). In its primary area of invasion, the Mar Chiquita coastal lagoon (37°32 0 S, Argentina), it forms reef structures having a mean density of about 100 reefs ha -1 (Schwindt et al 2001(Schwindt et al , 2004a.…”

Section: Introductionmentioning

confidence: 62%

“…In its primary area of invasion, the Mar Chiquita coastal lagoon (37°32 0 S, Argentina), it forms reef structures having a mean density of about 100 reefs ha -1 (Schwindt et al 2001(Schwindt et al , 2004a. Reefs may be up to 7 m in diameter and 0.5 m in height (Obenat and Pezzani 1994;Schwindt et al 2001). Adjacent reefs can merge to form irregular platforms (Obenat and Pezzani 1994), but some areas are not occupied (Schwindt et al 2001).…”

Section: Introductionmentioning

confidence: 99%

“…Reefs may be up to 7 m in diameter and 0.5 m in height (Obenat and Pezzani 1994;Schwindt et al 2001). Adjacent reefs can merge to form irregular platforms (Obenat and Pezzani 1994), but some areas are not occupied (Schwindt et al 2001). Reefs produce a suite of positive and negative effects.…”

Section: Introductionmentioning

confidence: 99%

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Effects of an invasive reef-building polychaete on the biomass and composition of estuarine macroalgal assemblages

2011

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Invasive species can transform ecological communities. Their profound effects may alter the sources and pathways of primary production. We investigated the effects of the reef forming polychaete Ficopomatus enigmaticus invasion on the biomass and distribution of estuarine macroalgae in a SW Atlantic coastal lagoon (Mar Chiquita, 37°40 0 S, 57°23 0 W, Argentina). Reefs built by this species serve as substrates for macroalgal development and furnish structures that modify physical and biological conditions for the surrounding benthos. We showed that (1) the red macroalga Polysiphonia subtilissima settles and grows almost exclusively on the surface of the reef, (2) the green macroalgae Cladophora sp. and Enteromorpha intestinalis are found almost exclusively in areas without reefs attached to mollusk shells and, (3) no macroalgae occur in the sediment between reefs. Manipulative experiments show that reefs provide a complex substrate for settlement and survival and therefore benefit red macroalga. These experiments also show that the invasive reef builder has negative indirect effects on green macroalgae by increasing grazing and probably by increased sedimentation between reefs. Via these direct and indirect effects, reefs change the relative biomass contribution of each macroalgal species to the overall production in the lagoon. Knowledge of these processes is important not only for predicting net effects on primary production but also because changes in macroalgal species composition may produce effects that cascade through the food web.

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Section: Introductionmentioning

confidence: 62%

Section: Introductionmentioning

confidence: 99%

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Effects of an invasive reef-building polychaete on the biomass and composition of estuarine macroalgal assemblages

2011

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“…References: Obenat and Pezzani (1994) and . Kuruma shrimp Marsupenaeus japonicus following declines in landings of the native penaeid Melicertus kerathurus (Galil, 2006), while others have become nuisance species.…”

Section: Marine and Inland Canals And Waterwaysmentioning

confidence: 99%

Biological Introductions to the Systems

Olenin

Minchin²

2011

Treatise on Estuarine and Coastal Science

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“…Of particular interest is its occurrence in Mar Chiquita, a temperate coastal lagoon in Argentina, where a field survey carried out in 1964 (Olivier et al, 1972) reported it as being a well-established component of the benthos. Obenat and Pezzani (1994) recognized it to be the dominant, benthic suspension feeder in the system; only two other benthic suspension feeders (the infaunal razor clam [Tagelus plebeius], and the intertidal mussel [Brachidontes rodriguezi] with a limited distribution) have been found at this coastal lagoon (Olivier et al, 1972).…”

Section: Introductionmentioning

confidence: 99%

Top-Down Effects of an Exotic Serpulid Polychaete on Natural Plankton Assemblage of Estuarine and Brackish Systems in the SW Atlantic

Pan¹,

Marcoval²

2014

Journal of Coastal Research

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Pan, J. and Marcoval, M.A., 2014. Top-down effects of an exotic serpulid polychaete on natural plankton assemblage of estuarine and brackish systems in the SW Atlantic. Journal of Coastal Research, 30(6), 1226-1235. Coconut Creek (Florida), ISSN 0749-0208.The invasive reef-building polychaete Ficopomatus enigmaticus (Fauvel, 1923) has become well-established in many temperate brackish waters. To analyze preferences for different planktonic food sources, short-term (~1.5 h), grazing microcosm experiments were performed in situ (n ¼ 3), at two water bodies, a coastal lagoon (Mar Chiquita, MC) and the mixohaline stretches of a coastal creek (La Tigra, LT), Argentina, in January 2007. Relative clearance rates of phytoplankton were assessed for chlorophyll a size-fractions and for different groups of nanoplanktonic and microplanktonic protists. The two locations showed significant differences in plankton community structure. Nanoeukaryotes were the dominant group at both locations; the second most-abundant groups were diatoms at MC and ciliates at LT. There were significant differences in chlorophyll-based clearance rates in relation to phytoplankton size-fraction. Clearance rates for pennate diatoms were significantly higher than for any other planktonic prey (2.3 l h À1 g DW À1 ). Ficopomatus enigmaticus presented relatively high clearance rates for heterotrophic ciliates (1.5 l h À1 g DW À1 ). Biomass removal by F. enigmaticus was high (.50% of initial standing stocks for all components), indicating that the serpulid was capable of regulating planktonic biomass. Significant differences in clearance for different components of the community suggest that F. enigmaticus has the potential to promote changes in plankton community structure and, hence, exerts strong top-down controls.

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Life Cycle and Population Structure of the Polychaete Ficopomatus enigmaticus (Serpulidae) in Mar Chiquita Coastal Lagoon, Argentina

Cited by 46 publications

References 20 publications

Effects of an invasive reef-building polychaete on the biomass and composition of estuarine macroalgal assemblages

Effects of an invasive reef-building polychaete on the biomass and composition of estuarine macroalgal assemblages

Biological Introductions to the Systems

Top-Down Effects of an Exotic Serpulid Polychaete on Natural Plankton Assemblage of Estuarine and Brackish Systems in the SW Atlantic

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