Effect of crab bioturbation on organic matter processing in South West Atlantic intertidal sediments
Organic matter (OM) remineralization plays a key role in controlling the biogeochemistry of marine sediments. Through their burrowing activities, bioturbating macrofauna not only induces physical, chemical and biological modifications, which can affect microbial communities responsible for organic m...
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Elsevier B.V.
2015
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| LEADER | 24203caa a22017057a 4500 | ||
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| 001 | PAPER-16772 | ||
| 003 | AR-BaUEN | ||
| 005 | 20230518204748.0 | ||
| 008 | 180614s2015 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-85028150185 | |
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 030 | |a JSREF | ||
| 100 | 1 | |a Fanjul, E. | |
| 245 | 1 | 0 | |a Effect of crab bioturbation on organic matter processing in South West Atlantic intertidal sediments |
| 260 | |b Elsevier B.V. |c 2015 | ||
| 270 | 1 | 0 | |m Fanjul, E.; Laboratorio de Ecología, Instituto de Investigaciones Marinas y Costeras, (IIMyC; Consejo Nacional de Investigaciones Cientificas y Tecnicas, Universidad Nacional de Mar del Plata), CC 573 Correo Central, Argentina; email: mefanjul@gmail.com |
| 506 | |2 openaire |e Política editorial | ||
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| 520 | 3 | |a Organic matter (OM) remineralization plays a key role in controlling the biogeochemistry of marine sediments. Through their burrowing activities, bioturbating macrofauna not only induces physical, chemical and biological modifications, which can affect microbial communities responsible for organic matter remineralization, but it could also directly affect the distribution and bioavailability of sedimentary organic matter. Through in situ experiments manipulating crab and burrow density in intertidal soft-bottoms, we assessed if crab-bioturbation affects benthic metabolism, and the amount, distribution, and bioavailability of sedimentary OM. Crab-bioturbation enhanced overall benthic metabolism and benthic flux of dissolved OM toward the water column at both mudflat and saltmarsh zones. Moreover, our results revealed that bioturbation also changes the quality, bioavailability and distribution of sedimentary OM in mudflats and saltmarshes. Overall, bioturbation enhanced the proportion of labile organic carbon of bioturbated sediments and homogenized the sediment column in terms of their proportion of labile organic carbon. However, crabs also generated biogenic structures (e.g., mounds) that could promote spatial heterogeneity of high nutritional-value OM. Bioturbation-induced changes on benthic metabolism and on OM availability would result in a reduction of the storage capacity of carbon in our intertidal systems. Previous works indicated that crab-burrows trap detritus and OM-rich sediments. Our results suggest that detritus are efficiently remineralized at bioturbated sediment, and finally they are quickly exported to the water column as CO2 and DOC. Thus, crabs are modifying the OM processing at intertidal soft bottoms, and the ways in which carbon is exported to coastal waters. © 2014 Elsevier B.V. |l eng | |
| 536 | |a Detalles de la financiación: UNMdP, Universidad Nacional de Mar del Plata | ||
| 536 | |a Detalles de la financiación: Fundación Antorchas | ||
| 536 | |a Detalles de la financiación: ANPCyT, Agencia Nacional de Promoción Científica y Tecnológica | ||
| 536 | |a Detalles de la financiación: CONICET, Consejo Nacional de Investigaciones Científicas y Técnicas | ||
| 536 | |a Detalles de la financiación: We thank G. I. Álvarez for her help on sampling processing. We also deeply thank the Editor and two anonymous reviewers for their suggestions and comments, which greatly improved the manuscript. This project was supported by grants from the UNMdP , Fundación Antorchas , CONICET , and ANPCyT to O. I. This work was part of the Doctoral Thesis of E. Fanjul at the UNMdP. E. Fanjul, M. Escapa, D. Montemayor, M. F. Alvarez, and M. Addino were supported by scholarships from CONICET (Argentina). | ||
| 593 | |a Laboratorio de Ecología, Instituto de Investigaciones Marinas y Costeras, (IIMyC; Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Mar del Plata), CC 573 Correo Central, Mar del Plata, Argentina | ||
| 593 | |a Departamento de Química, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes Mar del Plata, Argentina | ||
| 593 | |a Consejo Nacional de Investigaciones Cientificas y Técnicas (CONICET), Av. Rivadavia 1917, Buenos Aires, Argentina | ||
| 690 | 1 | 0 | |a BIOTURBATION |
| 690 | 1 | 0 | |a CRAB |
| 690 | 1 | 0 | |a INTERTIDAL |
| 690 | 1 | 0 | |a NEOHELICE GRANULATA |
| 690 | 1 | 0 | |a ORGANIC MATTER |
| 690 | 1 | 0 | |a SALTMARSHES |
| 690 | 1 | 0 | |a BENTHOS |
| 690 | 1 | 0 | |a BIOAVAILABILITY |
| 690 | 1 | 0 | |a BIOGENIC STRUCTURE |
| 690 | 1 | 0 | |a BIOTURBATION |
| 690 | 1 | 0 | |a BURROWING |
| 690 | 1 | 0 | |a CRAB |
| 690 | 1 | 0 | |a DETRITUS |
| 690 | 1 | 0 | |a INTERTIDAL ENVIRONMENT |
| 690 | 1 | 0 | |a MARINE SEDIMENT |
| 690 | 1 | 0 | |a ORGANIC MATTER |
| 690 | 1 | 0 | |a REMINERALIZATION |
| 690 | 1 | 0 | |a SALTMARSH |
| 690 | 1 | 0 | |a ATLANTIC OCEAN |
| 690 | 1 | 0 | |a ATLANTIC OCEAN (SOUTHWEST) |
| 690 | 1 | 0 | |a DECAPODA (CRUSTACEA) |
| 700 | 1 | |a Escapa, M. | |
| 700 | 1 | |a Montemayor, D. | |
| 700 | 1 | |a Addino, M. | |
| 700 | 1 | |a Alvarez, M.F. | |
| 700 | 1 | |a Grela, M.A. | |
| 700 | 1 | |a Iribarne, O. | |
| 773 | 0 | |d Elsevier B.V., 2015 |g v. 95 |h pp. 206-216 |x 13851101 |w (AR-BaUEN)CENRE-5782 |t J. Sea Res. | |
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