Living and dead foraminifera assemblages as environmental indicators in the Almada River Estuary, Ilhéus, northeastern Brazil

Laut, Lázaro; Matta, Gabriel da; Camară, Gabriel; Belart, Pierre; Clemente, Iara; Ballalai, João; Volino, Eduardo K.; Couto, Erminda da Conceição Guerreiro

doi:10.1016/j.jsames.2020.102883

Cited by 7 publications

(3 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The dominant agglutinated species in the CRE, P. clossi, is reported in other regions of the Brazilian coast normally associated with mangroves (Disaró 2006;Laut et al 2012Laut et al , 2016cLaut et al , 2021a, but often in lower relative abundances than in the present study. In the PCA, P. clossi is related to lower marine influence and in the opposite relation to DO.…”

Section: Foraminiferal Species and Environmental Conditionssupporting

confidence: 63%

“…Nonetheless, in recent decades, the number of studies using foraminifera as bioindicators in tropical areas has increased, which a focus on the foraminiferal response to natural (Debenay et al 2001;Duleba and Debenay 2003;Laut et al 2016a;Belart et al 2019) and anthropogenic (Vilela et al 2004(Vilela et al , 2011Teodoro et al 2009;Eichler et al 2015;Laut et al 2016bLaut et al , 2021aBelart et al 2018;Raposo et al 2018;Pregnolato et al 2018;Martins et al 2020) environmental stresses. A few studies addressing the effect of trace element pollution on the benthic foraminiferal community have also been performed (Debenay and Fernandez 2009;Lacuna and Alviro 2014;Martínez-Colón et al 2009, 2018ab;Sánchez et al 2020).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Benthic Foraminiferal Response to Trace Elements in a Tropical Mesotidal Brazilian Estuary

Raposo

Frontalini

Clemente

et al. 2022

Estuaries and Coasts

Self Cite

View full text Add to dashboard Cite

Living benthic foraminifera have been widely used as ecological indicators in coastal ecosystems. There is, however, a lack of studies on their response to trace element pollution in tropical estuarine systems. Here we analyze the living assemblages of benthic foraminifera, collected in 2016, in the Cachoeira River Estuary (CRE) in northeastern Brazil, to understand their response to natural and anthropogenic stressors, including trace element pollution. Some species were good bioindicators of specific environmental conditions, such as the agglutinant Paratrochammina clossi which preferred mangrove areas and anoxic conditions. In addition, the calcareous Ammonia tepida and Cribroelphidium excavatum, dominant within the whole system disregarding organic or trace element pollution, seem to resist even in the areas most polluted by trace elements. Interestingly, C. excavatum showed a particular positive relationship with trace element pollution (specifically by Cu and Pb), outnumbering the opportunistic A. tepida in the areas with higher pollution of these metals. However, for other species, it is still difficult to constrain to which parameters they respond (i.e., Haynesina germanica and Elphidium gunteri, which in the present study seem to respond to natural conditions, whereas in the literature they are regarded as indicators of trace element and organic pollution, respectively). Therefore, our findings shed light on the response of benthic foraminiferal species in a highly polluted and highly mixed tropical estuarine system and highlight the need to understand the complexity of these environments when applying foraminiferal biological indexes to avoid imprecise conclusions.

show abstract

Section: Foraminiferal Species and Environmental Conditionssupporting

confidence: 63%

Section: Introductionmentioning

confidence: 99%

Benthic Foraminiferal Response to Trace Elements in a Tropical Mesotidal Brazilian Estuary

Raposo

Frontalini

Clemente

et al. 2022

Estuaries and Coasts

Self Cite

View full text Add to dashboard Cite

show abstract

“…Murray, 2006) and present several characteristics that make them powerful bio-indicators of marine environmental characteristics (Schönfeld et al, 2012): (i) high density in marine sediments; (ii) short lifecycles; (iii) occupation of specific ecological niches and microhabitats, including superficial, shallow, and deep infaunal sediment layers (up to 10-20 cm depth). Because of these characteristics, foraminifera have increasingly been used as biotic tools for assessing the quality status of coastal marine environments (Alve et al, 2016;Barras et al, 2014;Belart et al, 2018;Bouchet et al, 2018aBouchet et al, , 2012Fontanier et al, 2009Fontanier et al, , 2020Frontalini and Coccioni, 2008;Jorissen et al, 2022;Laut et al, 2021;Martins et al, 2013Martins et al, , 2015Martins et al, , 2016Murray, 2006;Nesbitt et al, 2015). Moreover, Bouchet et al (2018b) showed that benthic foraminifera can be better bio-indicators than macrofauna as they can be present on a larger spectrum of environmental gradients compared to macrofauna and are generally more sensitive to (and therefore absent in) highly stressed conditions.…”

Section: Introductionmentioning

confidence: 99%

Short-term response of benthic foraminifera to fine sediment depositional events simulated in microcosm

Guilhermic

Pia

Howa

et al. 2022

Preprint

View full text Add to dashboard Cite

An in vitro experiment was designed to describe how benthic foraminifera (as witness of the benthic ecosystem) reacts to &#8220;one-time high volume&#8221; vs &#8220;frequent low volume&#8221; sediment discharge, as it may occur in coastal benthic environments regularly or occasionally buried during (e.g.) river flood massive deposits, or glacier melting events in polar regions. The influence of these events on the ecology of benthic ecosystems is often neglected and the resilience of benthic foraminiferal communities is poorly known. During a 53-day long experiment in microcosm, the NE Atlantic mudflat foraminifera community, mainly represented by Ammonia T6 and Haynesina germanica species, was confronted to two kinds of sedimentary disturbance: 1) one-time high volume (OHV) deposit, i.e. about 3 cm thick sediment is added in one time at the beginning of the experiment, and 2) frequent low volume (FLV) deposits, i.e. about 0.5 cm added each week for 4 weeks. The geochemical environment (e.g. O2 penetration in the sediment, salinity, temperature and nutrient content in the supernatant water) was monitored to follow its steady-state before and during the experiment. In the two studied cases, the foraminifera react to the disturbance by immediately moving upward to the surface within 1 day after the deposit. In the OHV treatment, a species vertical distribution in relation to the surface, comparable to the vertical distribution before the disturbance (i.e. a resilient state), is established at most 1 week after the deposit, and no effects are visible on the foraminiferal diversity after 1 month experiment (without any other sediment input). In the FLV treatment, the resilient state is already reached 1 day after a low thickness burial. This suggests that foraminifera can migrate rapidly to their preferential life position under the new sediment-water interface. However, after 4 recurrent burring events the density of H. germanica drastically decreases, changing in this way the foraminiferal community structure. The results of this microcosm experiment suggest that the entire foraminiferal community can migrate upward quickly enough to keep pace with at least 3 cm of abrupt burial but needs several days to reach a resilient state. Furthermore, frequent sediment deposition may affect foraminiferal biodiversity more than a massive erratic event.

show abstract

Insights into the Ecology of Foraminifera from the Most Hypersaline Lagoon in Brazil: Vermelha Lagoon

Laut

Belart

Carelli

et al. 2022

Estuaries and Coasts

View full text Add to dashboard Cite

Living and dead foraminifera assemblages as environmental indicators in the Almada River Estuary, Ilhéus, northeastern Brazil

Cited by 7 publications

References 42 publications

Benthic Foraminiferal Response to Trace Elements in a Tropical Mesotidal Brazilian Estuary

Benthic Foraminiferal Response to Trace Elements in a Tropical Mesotidal Brazilian Estuary

Short-term response of benthic foraminifera to fine sediment depositional events simulated in microcosm

Insights into the Ecology of Foraminifera from the Most Hypersaline Lagoon in Brazil: Vermelha Lagoon

Contact Info

Product

Resources

About