Horizontal and vertical distribution of mesozooplankton species richness and composition down to 2,300 m in the southwest Atlantic Ocean

Bonecker, Sérgio Luiz Costa; Araújo, Adriana Valente de; Carvalho, Paulo Cezar Pinto; Dias, Cristina de Oliveira; Fernandes, Luiz Fernando Loureiro; Migotto, Álvaro Esteves; Oliveira, Osmir Batista de

doi:10.1590/s1984-46702014000500005

Cited by 16 publications

(22 citation statements)

References 25 publications

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“…Although vertical hauls were used at the greatest depths, the very low density, richness, and diversity values found at 1,200 m follow the same trend reported in vertical studies of the southwestern Atlantic Ocean (Dias et al 2010, Bonecker et al 2014. In the oligotrophic Levantine Sea of the Eastern Mediterranean, Weikert et al (2001) also observed this pattern for deep-sea plankton communities sampled in daytime-and nighttime hauls (0-4,175 m).…”

Section: Hydrography Conditionssupporting

confidence: 74%

“…Their temperatures and salinities are below 20 °C and 36.4, respectively (Mémery et al 2000, Silveira et al 2000, Pedrosa et al 2006. Water masses at lower depths include the Antarctic Intermediate Water (AAIW, 567-1,060 m), the Upper Circumpolar Deep Water (UCDW, 1,060-1,300 m), and the North Atlantic Deep Water (NADW, 1,300-3,260) (Viana et al 1998, Pedrosa et al 2006, Bonecker et al 2014.…”

Section: Methodsmentioning

confidence: 99%

“…The deep sea zooplankton on the Brazilian central coast has not been investigated in detail. Information on the mesopelagic and bathypelagic communities is scarce except for that reported by Bonecker et al (2014) and Dias et al (2010). These authors described the compositions of the mesozooplankton and copepod communities, respectively.…”

Section: Introductionmentioning

confidence: 99%

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Vertical distribution and structure of copepod (Arthropoda: Copepoda) assemblages in two different seasons down to 1,200 m in the tropical Southwestern Atlantic

Dias¹,

Araújo²,

Bonecker³

2018

Zoologia

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The vertical distribution of copepod assemblages, ascertained from the surface down to 1,200 m, was investigated during two sampling periods (rainy and dry seasons), at four depths, in the oligotrophic waters of the southwestern Atlantic Ocean. Total density, diversity, and richness differed among sampling depths. Copepod density decreased with depth in the two sampling periods, with a maximum at 1 m and a slight decrease at 800 m. Higher diversities were observed at 250 m and 1,200 m during the rainy season and at 1 m and 1,200 m during the dry season. The maximum number of species was found at 1,200 m during the rainy season and at 1 m during the dry season. Various copepod assemblages were delimited in the water column in the two sampling periods. The deeper copepod assemblages occupied a wider range of depths. Salinity and temperature influenced the structure of copepod assemblages and reflected the hydrographic characteristics of the water masses in the region. Candaciapachydactyla (Dana, 1849), Scolecithrixdanae (Lubbock, 1856), and Agetuslimbatus (Brady, 1883) were the indicator species found at 1 m. The effects of different environmental factors on the copepod assemblages suggest that these consortia occupy distinct niches in the ocean.

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Section: Hydrography Conditionssupporting

confidence: 74%

Section: Methodsmentioning

confidence: 99%

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Vertical distribution and structure of copepod (Arthropoda: Copepoda) assemblages in two different seasons down to 1,200 m in the tropical Southwestern Atlantic

Dias¹,

Araújo²,

Bonecker³

2018

Zoologia

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“…The FINEP III campaign was conducted between Cabo Frio, Rio de Janeiro (23°S) and the south region of Santa Marta Grande Cape, Santa Catarina (29°S), in May 1976. The Habitats Project campaign was conducted in the Campos Basin, Rio de Janeiro (located between 24°S and 20.5°S), from February 2009 to February 2010 (Bonecker et al 2014). Specimens were conserved in 4% formaldehyde solution and dyed with fuchsine.…”

Section: Methodsmentioning

confidence: 99%

Species of Lensia (Cnidaria: Hydrozoa: Siphonophorae) from southeastern Brazilian waters

Nishiyama¹,

Araujo²,

Oliveira³

2016

Zoologia (Curitiba)

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ABSTRACT. The siphonophores of the Brazilian coast are poorly studied, despite their abundance and ecological importance.Lensia is the most diverse genus within Siphonophora, with twenty-six valid species. A total of twenty species of Lensia are recorded for South American marine waters. This study presents morphological descriptions and an identification key to the species of Lensia that were collected in two oceanographic campaigns throughout the southeastern Brazilian coast. A total of sixty-one specimens were photographed, described, schematized and measured, and fifteen species of Lensia were identified.

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“…The complexity of the water mass circulation has a profound impact on the natural resource diversity and ecological vulnerability of some marine areas (Gonzalez-Silvera et al ., 2004). Some studies reported on the vertical distribution of mesozooplankton and ichthyoplankton in the South-west Atlantic Ocean (Berasategui et al ., 2006; Dias et al ., 2010; Bonecker e t al ., 2012, 2014 a , b ). None, however, addressed diurnal variations in vertical distribution.…”

Section: Introductionmentioning

confidence: 99%

Vertical distribution of mesozooplankton and ichthyoplankton communities in the South-western Atlantic Ocean (23°14′1″S 40°42′19″W)

et al. 2018

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A study was conducted over eight consecutive days in February 2010 in which daily variations in the vertical distributions of heterotrophic bacteria, mesozooplankton and ichthyoplankton at 1–1200 m in the South-western Atlantic Ocean were investigated. Diurnal and nocturnal samples were collected at an oceanographic station at four regional depths: Tropical Water (TW) (1 m), South Atlantic Central Water (SACW) (250 m), Antarctic Intermediate Water (AAIW) (800 m) and Upper Circumpolar Deep Water (UCDW) (1200 m). Bacterial, mesozooplankton and larval fish densities significantly differed between sample depths but not between sampling tow times. In total, 154 zooplankton species and 18 larval fish species were identified. The highest number of taxa was obtained from the night-time TW trawls. This depth zone had the highest densities of mesozooplankton, larval fish and bacterioplankton (auto and heterotrophic), associated with the highest temperature and salinity and the lowest inorganic nutrient concentrations. Two sample groups were identified based on their mesozooplankton and larval fish compositions: night-time TW and other water masses (daytime TW, SACW, AAIW and UCDW). Thirty-two indicator species were detected in night-time TW. The copepod Nullosetigera impar was, to the best of our knowledge, identified for the first time on the Brazilian coast. Our results showed significant variability in the abundance and vertical distribution of mesozooplankton, bacterioplankton and larval fish along the water column in an oceanic area. We have provided new data and insights on the composition and vertical distribution of mesozooplankton, larval fish and bacterioplankton in deep waters in the South-western Atlantic Ocean.

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Horizontal and vertical distribution of mesozooplankton species richness and composition down to 2,300 m in the southwest Atlantic Ocean

Cited by 16 publications

References 25 publications

Vertical distribution and structure of copepod (Arthropoda: Copepoda) assemblages in two different seasons down to 1,200 m in the tropical Southwestern Atlantic

Vertical distribution and structure of copepod (Arthropoda: Copepoda) assemblages in two different seasons down to 1,200 m in the tropical Southwestern Atlantic

Species of Lensia (Cnidaria: Hydrozoa: Siphonophorae) from southeastern Brazilian waters

Vertical distribution of mesozooplankton and ichthyoplankton communities in the South-western Atlantic Ocean (23°14′1″S 40°42′19″W)

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