Distribution of microphytobenthic biomass in Martel Inlet, King George Island (Antarctica)

Living Foraminifera in a Brazilian Subtropical Coastal Environment (Flamengo Inlet, Ubatuba, São Paulo State–Brazil)

“…Absorbance was read at optical densities of 750, 665, and 430 nm in a spectrophotometer, before and after acidifi cation with 1 N HCl, according to Plante-Cuny ( 1978 ). The spectrophotometric technique yields reliable results (Daemen 1986 ;Cahoon 1999 ;Skowronski et al 2009 ). Results are given in mg/m 2 .…”

Meiofauna and microphytobenthos of Martel Inlet (Admiralty Bay, King George Island, Antarctica)

“…The bathymetric variation of the meiofauna and the microphytobenthos was also evaluated along transects (10 to 60 m depth) in five areas (CF, YP, RO, UP and BP) in Martel Inlet during the summer of 1997/98 and 2004/05 (Gheller, 2007;Skowronski et al, 1998;2009) ), comparable to those found in tropical regions at depths between 0 and 5 m (Cahoon, 1999). There was also a reduction in the Chl a/Phaeo ratio in relation to depth, from 3.2±3.2 at 10-20 m to 0.7±1.0 at 40-60 m, showing a higher contribution of senescent phytoplankton and/or macroalgae debris at the deeper sites and the limited light flux reaching the bottom.…”

“…A positive correlation between the microphytobenthos biomass and the meiofaunal densities was observed during the second summer, when the microphytobenthos biomass was approximately 25% lower than in the first summer (Skowronski et al, 2009). This might have acted as a limiting factor to the meiofauna in some of the areas (Skowronski & Corbisier 2002).…”

“…An inter-summer variation was observed: the first summer showed the highest microphytobenthic biomass apparently related to more hydrodynamic conditions, which causes the deposition of allochthonous material (Skowronski et al, 2009).…”

Admiralty Bay trophic relationships: a summary of results from isotopic analysis

“…The numbers of trophic levels are in accordance with the studies in the continental shelf of temperate, tropical and subtropical regions (Corbisier, 2006). The trophic web at ARCT, a more dynamic area, and at BP, under the influence of glaciers, had low diversity of food sources and are less complex than those at UP and CF where the diversity and quantity of organic matter were high, mainly from microphytobenthos (Skowronski & Corbisier 2002;Bromberg, 2004;Skowronski et al 2009). These communities were also more diverse regarding taxonomic groups.…”