Benthic fauna living on Spartina alterniflora of Cananéia estuarine region (25º02'S - 47º56'W)

Tararam, Airton Santo; Wakabara, Yoko

doi:10.1590/s0373-55241987000200001

Cited by 6 publications

(5 citation statements)

References 17 publications

(17 reference statements)

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“…Mobile organisms densities associated to salt marsh S. altemiflora greatly fluctuate with season (Tararam & Wakabara, 1987;Lana & Guiss, 1991;Flynn, 1993). Rapid population increases are explained in terms of the settlement of planktonic larvae and rapid growth rates of brooding invertebrates (Edgar & Moore, 1986).…”

Section: Discussionmentioning

confidence: 99%

“…These alterations are normally attributed to the effect of macrophyta on physical characteristics such as current speed and sediment stability (Peterson et a/., 1984) or modifications in biological interactions such as predation (Virnstein, 1977;Nelson, 1979;Heck & Thoman, 1981;FIynn, 1993). Densities of macrobenthic organisms in a salt marsh system often fluctuate greatly with season (Tararam & Wakabara, 1987;Lana & Guiss, 1991;FIynn, 1993), the same is also true to plant biomass, which makes the study of salt marsh structures more difficult.…”

Section: Introductionmentioning

confidence: 99%

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Effects of habitat complexity on the structure of macrobenthic association in a Spartina altemiflora marsh

Flynn

Tararam

Wakabara

1996

Rev. Bras. Oceanogr.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of habitat complexity on the structure of macrobenthic association in a Spartina altemiflora marsh

Flynn

Tararam

Wakabara

1996

Rev. Bras. Oceanogr.

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“…The estuaries of southeastern Brazil are colonized by various aquatic macrophytes species including Crinum americanum L. (Amaryllidaceae) and Spartina alterniflora Loisel. (Poaceae) (Tararam & Wakabara, 1987;Biudes & Camargo, 2006;Ribeiro et al, 2011). In areas with low or no influence of saltwater in the Itanhaém River Basin (Southeastern Brazil), several aquatic macrophyte species of different life forms occur.…”

Section: Introductionmentioning

confidence: 99%

Do interspecific competition and salinity explain plant zonation in a tropical estuary?

Nunes

Camargo

2016

Hydrobiologia

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Environmental gradients and competition influence aquatic macrophyte distribution in estuaries. The competition-to-stress hypothesis states that some species are excluded from lower estuaries (high salinity) due to abiotic stress and others from upper estuaries (low salinity) by competition. The growth of Crinum americanum L. and Spartina alterniflora Loisel. in monoculture (10:0/0:10) and mixed culture (5:5) under different salinity levels (4/12/26) was analysed by a laboratory experiment (3 cultures 9 3 sediment types 9 3 replicate) to understand the role of competition and salinity on the distribution of these species in a tropical estuary as well as to verify whether the competition-to-stress hypothesis explains their zonation. We tested the hypothesis that S. alterniflora is not established in the upper estuary due to the effect of competition with C. americanum, whereas the latter presents restrictions to high salinity and has greater competitive ability in the upper estuary. Our data confirm the competition-to-stress hypothesis but not as proposed originally. We conclude that abiotic stress (low nutrient availability) is responsible for the absence of S. alterniflora in the upper estuary and that the competition between the two species is responsible for the absence of C. americanum in the lower estuary.

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“…Rapid population increases are explained in terms of the settlement of planktonic larvae and rapid growth rates of brooding invertebrates (Edgar & Moore, 1986). It is possible that the low spring densities might be due to grazing by several species of fish which forage on infauna and present higher densities in spring (Tararam & Wakabara, 1987).…”

Section: Discussionmentioning

confidence: 99%

“…For that, description of cryptic intertidal distribution patterns of softsubstrate infaunal organisms, scarce in the literature, must 00 attended to permit an understanding of the community dynamics. Concerning specificaUy Brazilians subtropical salt-marshes few studies have been published (Capitoli et ai., 1978;Tararam & Wakabara, 1987;Takeda, 1988;Lana & Guiss, 1991;Flynn et ai., 1996).…”

Section: Introductionmentioning

confidence: 99%

Influence of Spartina alterniflora and tide level on the structure of polychaete associations in an euryhallne salt marsh in cananéia lagoon estuarine region (SE Brazil)

Attolini

Flynn

Tarararn

1997

Rev. Bras. Oceanogr.

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(Caixa. Postal 66149, São Paulo, SP, Brasil) . Abstract: Polychaete species composition, abundance and seasonal variation were analyzed in relation to Spartina alterniflora cover and tide levei at Ponta do Arrozal, Cananéia, during 1989/1990. Two intertidal stations were located on the S. alterniflora OOlt,one ca mean high water of neap tides (MHWN) and the other ca mean high water of spring tides (MHWS). Two other stations were established at corresponding tide levels at an adjacent site devoid of vegetation. A total of 17 species were collected. Each station was sampled twice seasonally with a 20 em of diameter corer. Capitella capitata, Isolda pulchella, Nereis oligohalina and Lumbrineris sp were the most abundant species. Statistically significant differences between the vegetated and bare sites considered were observed for the number of species, density, diversity and evenness, with their values OOinghigher at the vegetated site. Multivariate analysis showed spatial variations of the fauna according to vegetation cover and tide leveI. In relation to vegetation cover, polychaetes assemblages were distinguishable mainly by individual species densities of the more common species, since the most abundant species were present at the vegetated and bare sites. In relation to tide leveI, the faunal densities and number of species at the MHWN station were significantly higher than those at the MHWS station mainIy at the bare site.. Resumo: Analisou-se a composição, abundância e variação sazonal de espécies de poliquetas em relação à cobertura vegetal de Spartina alterniflora e o nível de maré na Ponta do Arrozal, Cananéia, nos anos 1989/1990. Duas estações entremarés foram estaOOlecidasno cinturão de S. alterniflora, uma na linha da média de marés altas de quadratura (LMMQ) e outra, na linha da média de marés altas de sizígia (LMMS). Duas outras estações de coleta foram estaOOlecidasa níveis de maré correspondentes, em um local adjacente desprovido de vegetação. Cada estação foi amostrada duas vezes à cada estação do ano, com auxílio de um corer de 20 em de diâmetro. Foram obtidas 17 espécies, sendo as mais abundantes Capitella capitata, Isolda pulchella, Nereis oligohalina e Lumbrineris sp. Diferenças estatisticamente significativas foram observadas em relação ao número de espécies, densidade, diversidade e equidade, sendo os valores destes índices sempre maiores no local vegetado. A análise multivariada mostrou uma variação espacial da fauna em relação à presença de cobertura vegetal e níveis de maré. Em relação à cobertura vegetal, associações de poliquetas foram distinguíveis principalmente pelas diferentes densidades das espécies mais comuns, já que a maioria destas espécies foram encontradas em ambos os locais. Em relação ao nível de maré, tanto as densidades quanto o número de espécies foram significativamente mais altos no nível LMMQ, principalmente no local desprovido de vegetação.. Descriptors: PIant cover, Tide leveI, Intertidal, Polychaeta associations, Spartina alterniflora marsh, Cananéia, Brazil.

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Benthic fauna living on Spartina alterniflora of Cananéia estuarine region (25º02'S - 47º56'W)

Abstract: The fauna of

Cited by 6 publications

References 17 publications

Effects of habitat complexity on the structure of macrobenthic association in a Spartina altemiflora marsh

Effects of habitat complexity on the structure of macrobenthic association in a Spartina altemiflora marsh

Do interspecific competition and salinity explain plant zonation in a tropical estuary?

Influence of Spartina alterniflora and tide level on the structure of polychaete associations in an euryhallne salt marsh in cananéia lagoon estuarine region (SE Brazil)

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