The bivalve Lembulus bicuspidatus may enhance denitrification in shelf sediment at the Angola–Benguela Frontal Zone

References

• Barnett PRO, Watson J, Conelly D. 1984. A multiple corer for taking virtually undisturbed samples from shelf, bathyal and abyssal sediments. Oceanologica Acta 7: 399–408.
   Google Scholar
• Checa AG. 2000. Remote biomineralization in divaricate ribs of Strigilla and Selecurtus (Tellinoidea: Bivalvia). Journal of Molluscan Studies 66: 457–466. doi: 10.1093/mollus/66.4.457
   Web of Science ®Google Scholar
• de Zwaan A, Wijsman TCM. 1976. Anaerobic metabolism in bivalvia (Mollusca). Characteristics of anaerobic metabolism. Comparative Biochemistry and Physiology B 54: 313–323. doi: 10.1016/0305-0491(76)90247-9
   PubMed Web of Science ®Google Scholar
• Emeis K-C, Eggert A, Flohr A, Lahajnar N, Nausch G, Neumann A et al., in press. Biogeochemical processes and turnover rates in the Northern Benguela Upwelling System. Journal of Marine Systems. Available online at doi: 10.1016/j.jmarsys.2017.10.001.
   Google Scholar
• Flohr A, van der Plas AK, Emeis K-C, Mohrholz V, Rixen T. 2014. Spatio-temporal patterns of C:N:P ratios in the northern Benguela upwelling system. Biogeosciences 11: 885–897. doi: 10.5194/bg-11-885-2014
   Web of Science ®Google Scholar
• Gallardo VA, Klingelhoeffer E, Arntz W, Graco M. 1998. First report of the bacterium Thioploca in the Benguela ecosystem off Namibia. Journal of the Marine Biological Association of the United Kingdom 78: 1007–1010. doi: 10.1017/S0025315400044945
   Web of Science ®Google Scholar
• Gould AA. 1845. Descriptions of shells from the coast of Africa. Boston Journal of Natural History 5: 290–294. Available online at http://biodiversitylibrary.org/page/32267559.
   Google Scholar
• Hamme RC, Emerson SR. 2004. The solubility of neon, nitrogen and argon in distilled water and seawater. Deep-Sea Research Part I 51: 1517–1528. doi: 10.1016/j.dsr.2004.06.009
   Google Scholar
• Hentschel U, Cary SC, Felbeck H. 1993. Nitrate respiration in chemoautotrophic symbionts of the bivalve Lucinoma aequizonata. Marine Ecology Progress Series 94: 35–41. doi: 10.3354/meps094035
   Web of Science ®Google Scholar
• Hentschel U, Felbeck H. 1995. Nitrate respiration in chemoautotrophic symbionts of the bivalve Lucinoma aequizonata is not regulated by oxygen. Applied and Environmental Microbiology 61: 1630–1633.
   PubMed Web of Science ®Google Scholar
• Kana TM, Darkangelo C, Hunt MD, Oldham JB, Bennett GE, Cornwell JC. 1994. Membrane inlet mass spectrometer for rapid high-precision determination of N2, O2, and Ar in environmental water samples. Analytical Chemistry 66: 4166–4170. doi: 10.1021/ac00095a009
   Web of Science ®Google Scholar
• Kuypers MMM, Lavik G, Woebken D, Schmid M, Fuchs BM, Amann R et al. 2005. Massive nitrogen loss from the Benguela upwelling system through anaerobic ammonium oxidation. Proceedings of the National Academy of Sciences of the United States of America 102: 6478–6483.
   Google Scholar
• Lange G, Darr A, Zettler ML. 2014. Macrozoobenthos communities in waters off Angola. African Journal of Marine Science 36: 313–321. doi: 10.2989/1814232X.2014.948913
   Web of Science ®Google Scholar
• Levin LA, Rathburn AE, Gutiérrez D, Muñoz P, Shankle A. 2003. Bioturbation by symbiont-bearing annelids in near-anoxic sediments: implications for biofacies models and paleo-oxygen assessments. Palaeogeography, Palaeoclimatology, Palaeo- ecology 199: 129–140. doi: 10.1016/S0031-0182(03)00500-5
   Web of Science ®Google Scholar
• Mohrholz V, Bartholomae CH, van der Plas AK, Lass HU. 2008. The seasonal variability of the northern Benguela undercurrent and its relation to the oxygen budget on the shelf. Continental Shelf Research 28: 424–441. doi: 10.1016/j.csr.2007.10.001
   Web of Science ®Google Scholar
• Mohrholz V, Schmidt M, Lutjeharms JRE. 2001. The hydrography and dynamics of the Angola–Benguela Frontal Zone and environment in April 1999. South African Journal of Science 97: 199–208.
   Web of Science ®Google Scholar
• Nagel B, Emeis K-C, Flohr A, Rixen T, Schlarbaum T, Mohrholz V, van der Plas A. 2013. N-cycling and balancing of the N-deficit generated in the oxygen minimum zone over the Namibian shelf — an isotope-based approach. Journal of Geophysical Research: Biogeosciences 118: 361–371.
   Web of Science ®Google Scholar
• Neumann A, Lahajnar N, Emeis K-C. 2016. Benthic remineralisation rates in shelf and slope sediments of the northern Benguela upwelling margin. Journal of Continental Shelf Research 113: 47–61. doi: 10.1016/j.csr.2015.12.009
   Web of Science ®Google Scholar
• Pohlmann J. 2010. Optimierung eines membraneinlasses für die messung am membran inlet massenspektrometer. Diplomarbeit [Master’s thesis], Fachbereich Angewandte Naturwissenschaften, Fachhochschule Lübeck [Lübeck University of Applied Sciences, Germany].
   Google Scholar
• Risgaard-Petersen N, Nielsen LP, Rysgaard S, Dalsgaard T, Meyer RL. 2003. Application of the isotope-pairing technique in sediments where anammox and denitrification coexist. Limnology and Oceanography: Methods 1: 63–73.
   Web of Science ®Google Scholar
• Schulz HN, Jørgensen BB. 2001. Big bacteria. Annual Review of Microbiology 55: 105–137. doi: 10.1146/annurev.micro.55.1.105
   PubMed Web of Science ®Google Scholar
• Schulz HN, Schulz HD. 2005. Large sulfur bacteria and the formation of phosphorite. Science 307: 416–418. doi: 10.1126/science.1103096
   PubMed Web of Science ®Google Scholar
• Shannon LV, Agenbag JJ, Buys MEL. 1987. Large- and mesoscale features of the Angola–Benguela front. South African Journal of Marine Science 5: 11–34. doi: 10.2989/025776187784522261
   Web of Science ®Google Scholar
• Stefano GB, Mantione KJ, Casares FM, Kream RM. 2015. Anaerobically functioning mitochondria: evolutionary perspective on modulation of energy metabolism in Mytilus edulis. Invertebrate Survival Journal 12: 22–28.
   Web of Science ®Google Scholar
• Taylor JD, Glover EA. 2006. Luciniae (Bivalvia) – the most diverse group of chemosymbiotic molluscs. Zoological Journal of the Linnean Society 148: 421–438. doi: 10.1111/j.1096-3642.2006.00261.x
   Web of Science ®Google Scholar
• von Bodungen B, John HC, Lutjeharms JRE, Mohrholz V, Veitch V. 2008. Hydrographic and biological patterns across the Angola– Benguela Frontal Zone under undisturbed conditions. Journal of Marine Systems 74: 189–215. doi: 10.1016/j.jmarsys.2007.12.007
   Web of Science ®Google Scholar
• Zettler ML, Bochert R, Pollehne F. 2009. Macrozoobenthos diversity in an oxygen minimum zone off northern Namibia. Marine Biology 156: 1949–1961. doi: 10.1007/s00227-009-1227-9
   Web of Science ®Google Scholar