Bioturbation activity of three macrofaunal species and the presence of meiofauna affect the abundance and composition of benthic bacterial communities

Lacoste, Élise; Piot, Adéline; Archambault, Philippe; McKindsey, Christopher W.; Nozais, Christian

doi:10.1016/j.marenvres.2018.02.024

Cited by 24 publications

(15 citation statements)

References 60 publications

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“…An increase in the H + concentration, due to lower seawater pH value, may modify the three‐dimensional protein structure of the active site of the enzyme, thus affecting enzymatic activities (Cunha et al ). At the same time, changes in the meiobenthic assemblage composition at low pH, with an increase in the abundance of annelids and a reduction of foraminifera, could have entailed cascading effects on microbial‐mediated OM degradation rate (Piot et al ; Lacoste et al ). For instance, polychaetes are known to enhance bacterial activities, either directly, by consuming bacteria and thus stimulating their growth (Montagna ), or indirectly, through particle reworking and solute transport due to bioturbation activity (Aller and Aller ).…”

Section: Discussionmentioning

confidence: 99%

“…Although the responses of seagrasses and the associated epiphytic communities to low pH have been thoroughly assessed (Hall‐Spencer et al ; Martin et al ; Campbell and Fourqurean ; Cox et al ; Guilini et al ; Ravaglioli et al ), there is a dearth of studies dealing with the impacts of OA on meiofauna that inhabit seagrass sediments. This abundant and high diverse group of small invertebrates (< 1 mm) plays key ecological roles in marine sediments, contributing to energy transfer to higher trophic levels (Schratzberger and Ingels ) and increasing OM remineralization, through the stimulation of microbial activities (Nascimento et al ; Bonaglia et al ; Lacoste et al ). OA can change meiobenthic assemblages either directly, by altering metabolic processes, or indirectly, by modifying interactions among species and trophic groups (e.g., predation pressure; Kurihara et al ; Dashfield et al ; Widdicombe and Spicer ; Kroeker et al ; Meadows et al ; Mevenkamp et al ).…”

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confidence: 99%

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Ocean acidification alters meiobenthic assemblage composition and organic matter degradation rates in seagrass sediments

Ravaglioli

Lardicci

Pusceddu

et al. 2019

Limnology & Oceanography

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Seagrass meadows are an important organic matter (OM) reservoir but, are currently being lost due to global and regional stressors. Yet, there is limited research investigating the cumulative impacts of anthropogenic stressors on the structure and functioning of seagrass benthic assemblages, key drivers of OM mineralization and burial. Here, using a 16‐month field experiment, we assessed how meiobenthic assemblages and extracellular enzymatic activities (as a proxy of OM degradation) in Posidonia oceanica sediments responded to ocean acidification (OA) and nutrient loadings, at CO2 vents. P. oceanica meadows were exposed to three nutrient levels (control, moderate, and high) at both ambient and low pH sites. OA altered meiobenthic assemblage structure, resulting in increased abundance of annelids and crustaceans, along with a decline in foraminifera. In addition, low pH enhanced OM degradation rates in seagrass sediments by enhancing extracellular enzymatic activities, potentially decreasing the sediment carbon storage capacity of seagrasses. Nutrient enrichment had no effect on the response variables analyzed, suggesting that, under nutrient concentration unlikely to cause N or P imitation, a moderate increase of dissolved nutrients in the water column had limited influence on meiobenthic assemblages. These findings show that OA can significantly alter meiobenthic assemblage structure and enhance OM degradation rates in seagrass sediments. As meiofauna are ubiquitous key actors in the functioning of benthic ecosystems, we postulated that OA, altering the structure of meiobenthic assemblages and OM degradation, could affect organic carbon sequestration over large spatial scales.

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Section: Discussionmentioning

confidence: 99%

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confidence: 99%

Ocean acidification alters meiobenthic assemblage composition and organic matter degradation rates in seagrass sediments

Ravaglioli

Lardicci

Pusceddu

et al. 2019

Limnology & Oceanography

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“…Thus, although the roles of macrofauna (via bioturbation and bio‐irrigation) may be well identified, more integrated approaches require further knowledge, in particular concerning the roles of other biological compartments, such as meiofauna and bacteria. In particular, there is a recent and growing interest to study the role of meiofauna, since it has been shown that these organisms may modulate the biological interactions within sediments (Bonaglia et al 2014; Lacoste et al 2018b) and play a significant role in benthic ecosystem processes and services (Schratzberger & Ingels 2017). Until now, the paucity of information on this group likely reflects the labour‐intensive nature of obtaining such data, which is particularly demanding both in terms of fieldwork and species identification.…”

Section: Predicting the Impacts Of Bivalve Aquaculture On The Benthicmentioning

confidence: 99%

Biodiversity–Ecosystem Functioning (BEF) approach to further understanding aquaculture–environment interactions with application to bivalve culture and benthic ecosystems

Lacoste

McKindsey

Archambault

2020

Reviews in Aquaculture

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Coastal benthic ecosystems may be impacted by numerous human activities, including aquaculture, which continues to expand rapidly. Indeed, today aquaculture worldwide provides more biomass for human consumption than do wild fisheries. This rapid development raises questions about the interactions the practice has with the surrounding environment. In order to design strategies of sustainable ecosystem exploitation and marine spatial planning, a better understanding of coastal ecosystem functioning is needed so that tools to quantify impacts of human activities, including aquaculture, may be developed. To achieve this goal, some possible directions proposed are integrated studies leading to new concepts, model development based on these concepts and comparisons of various ecosystems on a global scale. This review draws on existing literature to (i) briefly summarize the major ecological interactions between off‐bottom shellfish aquaculture and the environment, (ii) introduce research on the influence of benthic diversity on ecosystem functioning (BEF relationships) and (iii) propose a holistic approach to conduct aquaculture–environment studies using a BEF approach, highlighting the need for integrated studies that could offer insights and perspectives to guide future research efforts and improve the environmental management of aquaculture.

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“…sessile animals on hoard bottom) Function Impacts sediment biogeochemistry (oxygen, pH and redox gradients, elemental carbon), organic matter regeneration, nutrient cycling, sediment granulometry, pollutant release, microbial composition, abundance and diversity and in general provision and maintenance of habitats for other organisms. References Chen et al, 2017;Frid et al, 2008;Gogina et al, 2017;Lacoste et al, 2018;Mermillod-Blondin, 2011;Pearson, 2001;Queirós et al, 2013;Solan et al, 2012 Tolerance Definition Degree to which a species reacts to changes in its environment.…”

Section: Remarkmentioning

confidence: 99%

The Arctic Traits Database – A repository of arctic benthic invertebrate traits

Degen¹,

Faulwetter²

2018

Preprint

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Abstract. The recently increased interest in marine trait-based studies highlights one general demand – the access to standardized, reference-based trait information. This demand holds especially true for polar regions, where the gathering of ecological information is still challenging. The Arctic Traits Database is a freely accessible online repository (https://doi.org/10.25365/phaidra.49; http://https://www.univie.ac.at/arctictraits) that fulfils these requests for one important component of polar marine life, the Arctic benthic macroinvertebrates. It accounts for 1) obligate traceability of information (every entry is linked to at least one source), 2) exchangeability among trait platforms (use of most common download formats), 3) standardization (use of most common terminology and coding scheme), and 4) user friendliness (granted by an intuitive web-interface and rapid and easy download options). The combination of these aspects makes the Arctic Traits Database the currently most sophisticated online accessible trait platform in (not only) marine ecology and a role-model for prospective databases of other marine compartments or other (also non-marine) ecosystems. At present the database covers 20 traits (85 trait categories) and holds altogether 8107 trait entries for 1211 macro- and megabenthic taxa. Thus, the Arctic Traits Database will foster and facilitate trait-based approaches in polar regions in the future and increase our ecological understanding of this rapidly changing system.

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Bioturbation activity of three macrofaunal species and the presence of meiofauna affect the abundance and composition of benthic bacterial communities

Cited by 24 publications

References 60 publications

Ocean acidification alters meiobenthic assemblage composition and organic matter degradation rates in seagrass sediments

Ocean acidification alters meiobenthic assemblage composition and organic matter degradation rates in seagrass sediments

Biodiversity–Ecosystem Functioning (BEF) approach to further understanding aquaculture–environment interactions with application to bivalve culture and benthic ecosystems

The Arctic Traits Database – A repository of arctic benthic invertebrate traits

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