Foraminiferal assemblages in Biscayne Bay, Florida, USA: Responses to urban and agricultural influence in a subtropical estuary

Carnahan, Elizabeth A.; Hoare, A.; Hallock, Pamela; Lidz, Barbara H.; Reich, Christopher D.

doi:10.1016/j.marpolbul.2009.08.008

Cited by 82 publications

(30 citation statements)

References 31 publications

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“…The FI was calculated based on functional groups according to Hallock et al (2003), as modified by Carnahan et al (2009). For each sample, the FI was determined by the equation:…”

Section: Foraminiferal Investigationsmentioning

confidence: 99%

“…Hallock et al (2003), Ramirez et al (2008), and Carnahan et al (2009) all cautioned that coarser sediments could have higher FI indices compared to finer sediments. Although larger foraminifera can be abundant in coarse sediments, Hallock et al (2003) and Ramirez et al (2008) demonstrated that, in ecosystems where environmental conditions are conducive for higher abundances of smaller foraminifera, they are not overwhelmed by the shells of larger species even in coarse sediments.…”

Section: Fi and Sediment Texturementioning

confidence: 99%

“…The input of nutrients into coral reef environments allows the proliferation of small heterotrophic foraminifera, whose shells numerically overwhelm those of symbiont-bearing taxa (Cockey et al, 1996). Under extreme local nutrification, where organic-rich conditions can result in intermittent hypoxia in the sediments (i.e., eutrophication), a few species of small, stress-tolerant foraminifera can become dominant (e.g., Alve and Bernhard, 1995;Carnahan et al, 2009). The advantage of benthic foraminifera as bioindicators is that their relatively short life cycles and sensitivity to changing environmental conditions allow them to respond more quickly than corals to changes in water quality.…”

Section: Introductionmentioning

confidence: 99%

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Assessing coral reef health in the North Ari Atoll (Maldives) using the FoRAM Index

Pisapia

Kateb

Hallock

et al. 2017

Marine Micropaleontology

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Tropical marine ecosystems are richly diverse, but are experiencing growing pressure from coastal development and tourism. Assessing the status of coral reef communities along gradients of human pressure is necessary to predict recovery capacity of reefs exposed to acute events such as mass bleaching or storm destruction. Islands in the central Maldives Archipelago, which experience three different management regimes (four for each category: local community, uninhabited, and resort islands), were sampled during the International Union for Conservation of Nature (IUCN)-REGENERATE Cruise in 2015. Assessments were carried out using the FoRAM Index (FI), based on relative abundances of larger foraminiferal shells in reef sediments.Overall, FI values (> 5) indicate that water quality currently should support active accretion by reef-building corals and larger benthic foraminifers. The highest median FI values (5.9) were recorded from sites associated with the uninhabited islands. Slightly, but significantly lower medians were recorded at sites near community and resort islands (FI = 5.3 and 5.1, respectively) that host permanent human settlement, indicating possible local deterioration of water quality by disposal of domestic wastes. Note that the FI was designed to assess suitability of local water quality and not to assess responses to regional to global changes associated with temperature stress or ocean acidification.

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“…The FI was calculated based on functional groups according to Hallock et al (2003), as modified by Carnahan et al (2009). For each sample, the FI was determined by the equation:…”

Section: Foraminiferal Investigationsmentioning

confidence: 99%

Section: Fi and Sediment Texturementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Assessing coral reef health in the North Ari Atoll (Maldives) using the FoRAM Index

Pisapia

Kateb

Hallock

et al. 2017

Marine Micropaleontology

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“…Horton et al (2003) melaporkan bahwa Miliolinella mendominasi substrat lumpur yang tidak memiliki vegetasi. Kehadiran Miliolinella mengindikasikan kondisi perairan yang mirip dengan estuari alami (Carnahan et al, 2009). Menurut Uthicke et al (2010, 11 di wilayah Whitsunday, Great Barrier Reef Australia, organisme ini berasosiasi dengan sedimen yang lembut disertai kandungan organik yang tinggi.…”

Section: Miliolinellaunclassified

The Composition and Distribution of Benthic Foraminifera at Coral Reef Ecosystem in Thousands Island

Toruan¹,

Soedharma²,

Dewi³

2013

J. Ilmu dan Teknologi Kelautan Tropis

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“…The impact of pollution, mainly by heavy metals and organic matter, on benthic foraminifera has been the goal of an increasing number of research lines (e.g., Frontalini et al, 2011;Martins et al, 2010;Carnahan et al, 2009;Romano et al, 2008;Burone et al, 2007Burone et al, , 2006Armynot du Châtelet et al, 2003, Yanko et al, 1999, 1998Alve, 1995Alve, , 1991. Most of these works evaluate the degree of stress caused by pollutants in foraminifera and are based on the total sedimentary elemental concentration of heavy metals.…”

Section: Introductionmentioning

confidence: 99%

The response of benthic foraminifera to pollution and environmental stress in Ria de Aveiro (N Portugal)

Martins

Yamashita

Sousa

et al. 2011

Journal of Iberian Geology

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This work evaluates the quality of the sediment in Ria de Aveiro, a coastal lagoon located at N of Portugal that is under strong anthropic influence, and the effects of the contamination on benthic foraminifera. The initial approach for measuring pollution was done through the load pollution index (LPI), based on As, Cd, Cr, Cu, Ni, Pb and Zn concentrations, and determined by total digestion of the sediments (TDS). This information was complemented by conducting a metal fractionation technique (sequential chemical extraction -SCE) in some of the most contaminated samples in order to define the relevance of different metal bearingphases (exchangeable cations adsorbed by clay and co-precipitated with carbonates, absorbed by organic matter and retained in the mineralogical phase) and to evaluate the toxic heavy metal availability. Multivariable statistical analyses were carried out taking into consideration the geochemical results, as well as the biotic (percentage of species/groups of species; foraminifer abundance and diversity) and abiotic variables, such as sediment content in mud, total organic carbon (TOC) and Eh.SCE results show that most of the element concentration in the sediments is retained in the resistant mineralogical phase. However, the higher bioavailability of some toxic elements, such as As, Cd, Cu, Hg, Ni, Pb and Zn, found in Laranjo Bay, Aveiro City, Aveiro Harbours and Espinheiro Channel, have a generic negative impact on benthic foraminifera of the Aveiro lagoon. Differential sensitivity of benthic foraminifera to high concentrations of heavy metals may exist. Quinqueloculina seminulum, for instance, seems to be more tolerant to higher bioavailable concentrations of Pb and Cu than Ammonia tepida or Haynesina germanica. Both

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Foraminiferal assemblages in Biscayne Bay, Florida, USA: Responses to urban and agricultural influence in a subtropical estuary

Cited by 82 publications

References 31 publications

Assessing coral reef health in the North Ari Atoll (Maldives) using the FoRAM Index

Assessing coral reef health in the North Ari Atoll (Maldives) using the FoRAM Index

The Composition and Distribution of Benthic Foraminifera at Coral Reef Ecosystem in Thousands Island

The response of benthic foraminifera to pollution and environmental stress in Ria de Aveiro (N Portugal)

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