"La maree de Salinite Dans le Capibaribe" Recife-Bresil

Ottmann, François; Ottmann, Jeanne-Marie

doi:10.5914/tropocean.v1i1.2457

Cited by 2 publications

(2 citation statements)

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“…The levels of environmental deterioration have increased during recent decades in response to population growth and local industrial development (PARANAGUÁ et al, 2005), which have compromised the water quality in the estuary. OTTMANN and OTTMANN (1959) presented the very first assessment of the water quality in the estuary, followed many years later by KOENING et al (1995) and, more recently, ANJOS et al (2012) andNORIEGA et al (2013). These authors noted the occurrence, in recent years, of a eutrophic state with high phytoplankton biomass, low transparency and low oxygen concentrations.…”

Section: Physical Settingmentioning

confidence: 97%

The circulation of the lower Capibaribe Estuary (Brazil) and its implications for the transport of scalars

et al. 2016

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The Capibaribe Estuary is a water body that crosses the Recife Metropolitan Area (RMA), one of the largest population centers in Brazil, and causes large pollutant loads and poor water quality. The fresh water inflow of wastewater from the RMA can account for three times the volume of the river discharge during the low discharge period. This article assesses the hydrodynamics and potential transport of particulate and dissolved scalars in this estuary. A field experiment was conducted to record the water level, current velocity, salinity, temperature and suspended particulate matter (SPM) contents during a full semi-diurnal tidal cycle. This experiment was performed during low river discharge and spring tide conditions. The estuary showed a partially mixed circulation pattern. The residual transport of water and salt were up estuary, while the SPM residual transport was down estuary. The former were understood as the effect of the residual circulation around the islands, while the latter was interpreted as a morphological factor inducing greater resuspension during the ebb, despite the symmetrical ebb and flood currents. This mechanism may transport SPM to the inner shelf, even under tide-dominated conditions when the opposite would be expected.

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Section: Physical Settingmentioning

confidence: 97%

The circulation of the lower Capibaribe Estuary (Brazil) and its implications for the transport of scalars

et al. 2016

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“…The Capibaribe river estuary ( Fig. 1) is located on the coast of Recife, Pernambuco State, Brazil 07 o 54'-8 o 19'S, 34 o 54'-36 o 42'W; hydrographic basin: 7,716 km 2 ; maximum depth 8 m; tidal entry ~15 km from the Atlantic Ocean) (Ottmann & Ottmann, 1960). The climate is warm-humid, pseudo-tropical (Koppen As') with a mean annual temperature of 26 o C and a rainfall of 1500-2000 mm.yr -1 , concentrated from March to August.…”

Section: Study Areamentioning

confidence: 99%

Cladocerans (Branchiopoda) of a tropical estuary in Brazil

et al. 2005

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The study was conducted in the Capibaribe river estuary in Recife (Brazil) to assess the role played by cladocerans in a eutrophic environment. Samplings were carried out monthly at 4 fixed stations along the estuary from July 1987 to June 1988. Collections were made with a plankton net of 65 micrometers mesh size. Six cladocerans species were registered: Penilia avirostris, Diaphanosoma spinulosum, Chlydorus barroisi, Ceriodaphnia rigaudi, Ilyocryptus spinifer, and Moina micrura. The most frequent species was Moina micrura with 49%. The only true marine species was Penilia avirostris, which was registered at station 1 (close to the river mouth), during high and low tide and in the dry season. The Cladocera average density decreased from 329 ind.m'3 (August 1987, high tide) to 2 ind.m(-3) (March 1988, high tide) due to the high load of organic and chemical pollution received by the estuary. At all stations, D. spinulosum, M. micrura, and C. barroisi occurred with a wide distribution, mainly during the rainy season. C. rigaudi and I. spinifer were rare, occurring only during the rainy season. Cladocerans played an important role in the food webs of the plankton community of the Capibaribe tropical estuary and the dominance of a few small species indicated a hypereutrophic environment. A high level of disturbance was indicated by the decline in diversity of specialized species and the increase in abundance of opportunistic species like M. micrura.

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"La maree de Salinite Dans le Capibaribe" Recife-Bresil

Cited by 2 publications

References 0 publications

The circulation of the lower Capibaribe Estuary (Brazil) and its implications for the transport of scalars

The circulation of the lower Capibaribe Estuary (Brazil) and its implications for the transport of scalars

Cladocerans (Branchiopoda) of a tropical estuary in Brazil

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