Estuarine macrofauna responses to continuous in situ nutrient addition on a tropical mudflat

Botter-Carvalho, M.L.; Carvalho, Paulo V.V.C.; Valença, Ana Paula Maria Cavalcanti; Santos, Paulo Jorge Parreira dos

doi:10.1016/j.marpolbul.2014.03.049

Cited by 8 publications

(3 citation statements)

References 47 publications

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“…For example, in situ nutrient enrichment experiments have increased our understanding of the biological and biogeochemical changes that occur with eutrophication in unvegetated sediments [13,27,28]. However, most are restricted both spatially (to a few locations) and temporally (to a duration of a few weeks or months [29][30][31]. This negates the incorporation of longer-term process such as macrofauna recruitment cycles and shifts in community structure as the system equilibrates to the added stressor, decreasing the real-world relevance.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Long-Term Nitrogen Enrichment on Estuarine Benthic-Pelagic Coupling

Mangan

Lohrer

Thrush

et al. 2022

JMSE

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Biogeochemical cycling in the marine coastal zone regulates the availability of nitrogen and carbon within soft sediment habitats. However, these pathways are being fundamentally altered by anthropogenic increases in nutrient delivery. Few studies have incorporated long-term enrichment and ecological complexity (in situ experiments), restricting our ability to manage effectively and prevent ecological shifts. This study investigates the influence of sediment nutrient availability (at 3 levels, across 2 seasons) on biogeochemical cycling over a 20-month period in 4 estuaries. Overall, net denitrification rates were highly variable, ranging between 4 and 208 µmol N m−2 h−1. However, no increases were observed with increasing enrichment highlighting the limited capacity for nitrogen removal in response to large increases in bioavailable nitrogen. Additionally, macrofaunal communities and sediment trophic status were shown to have important influences on nitrogen processing. Overall, alterations to ecosystem relationships and the appearance of non-linear responses to increasing nutrient enrichment reveal the vulnerability of estuaries to increasing stressor loads owing to the increased likelihood of reaching a tipping point.

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Section: Introductionmentioning

confidence: 99%

The Effects of Long-Term Nitrogen Enrichment on Estuarine Benthic-Pelagic Coupling

Mangan

Lohrer

Thrush

et al. 2022

JMSE

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“…Univariate measures, such as the number of species, abundance, and biomass, and multivariate measures, such as species composition and similarities, are often used to describe the population and community responses to natural and/or human-induced disturbances (e.g., Warwick 1986;Warwick et al 1987;Tsutsumi et al 1991;Simboura et al 1995;Botter-Carvalho et al 2014). While a diversity index is commonly used to analyze most field data, the index values can be converted to true diversity values or effective numbers of species, making it directly comparable to species richness (Jost 2006(Jost , 2007.…”

Section: Introductionmentioning

confidence: 99%

Variation in macrofaunal communities of sea grass beds along a pollution gradient in Bolinao, northwestern Philippines

Leopardas

Honda

Bolisay

et al. 2016

Marine Pollution Bulletin

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This study examined the variation of macrofaunal communities in sea grass beds along a pollution gradient in Bolinao, northwestern Philippines. We established four stations and compared the diversity and abundance of macrofauna between them. The Shannon diversity index in the least polluted station was more than twice higher than that in the most polluted one. Abundance was more than thrice higher in the most polluted station. The species composition generally varied, with community difference explained largely by the predominance of the filter-feeding bivalve Gafrarium pectinatum and polychaete Capitella capitata. Species heterogeneity was reduced along the pollution gradient by approximately 19% from the least polluted to the most polluted station. This reduction indicates biodiversity alteration, which has a significant impact on ecosystem functioning. Aspects of species heterogeneity should be considered in environmental impact assessments and the management of coastal areas encountered with anthropogenic disturbances.

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“…Because contaminated sediments are complex matrices under the everexpanding number of stressors (chemical, physical and biological) and stressor interactions arising from anthropogenic activities and global change (Burton and Johnston, 2010;de Vries et al, 2010;Tlili et al, 2010;Annala et al, 2014), there is growing agreement among marine investigators that biochemical and physiological level responses to contaminants are not sufficient to assess the health of marine ecosystems (Borja et al, 2015). As a global problem, sediment contamination and its harmful effects may be cross multiple ecological scales, from the individual, community, to ecosystem levels (Dang et al, 2013;Botter-Carvalho et al, 2014). Therefore, assessing the ecological consequence of contaminated sediments has been increasingly highlighted but is also exceptionally challenging.…”

Section: Introductionmentioning

confidence: 99%

Impact of extreme metal contamination at the supra-individual level in a contaminated bay ecosystem

Song

et al. 2016

Science of The Total Environment

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Estuarine macrofauna responses to continuous in situ nutrient addition on a tropical mudflat

Cited by 8 publications

References 47 publications

The Effects of Long-Term Nitrogen Enrichment on Estuarine Benthic-Pelagic Coupling

The Effects of Long-Term Nitrogen Enrichment on Estuarine Benthic-Pelagic Coupling

Variation in macrofaunal communities of sea grass beds along a pollution gradient in Bolinao, northwestern Philippines

Impact of extreme metal contamination at the supra-individual level in a contaminated bay ecosystem

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