Articles | Volume 17, issue 4
https://doi.org/10.5194/bg-17-865-2020
https://doi.org/10.5194/bg-17-865-2020
Research article
 | 
20 Feb 2020
Research article |  | 20 Feb 2020

Alpha and beta diversity patterns of polychaete assemblages across the nodule province of the eastern Clarion-Clipperton Fracture Zone (equatorial Pacific)

Paulo Bonifácio, Pedro Martínez Arbizu, and Lénaïck Menot

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Cited articles

Amon, D. J., Ziegler, A. F., Dahlgren, T. G., Glover, A. G., Goineau, A., Gooday, A. J., Wiklund, H., and Smith, C. R.: Insights into the abundance and diversity of abyssal megafauna in a polymetallic-nodule region in the eastern Clarion-Clipperton Zone, Sci. Rep.-UK, 6, 30492, https://doi.org/10.1038/srep30492, 2016. 
Baselga, A.: Partitioning the turnover and nestedness components of beta diversity, Global Ecol. Biogeogr., 19, 134–143, https://doi.org/10.1111/j.1466-8238.2009.00490.x, 2010. 
Błażewicz, M., Jóźwiak, P., Menot, L., and Pabis, K.: High species richness and unique composition of the tanaidacean communities associated with five areas in the Pacific polymetallic nodule fields, Prog. Oceanogr., 176, 102141, https://doi.org/10.1016/j.pocean.2019.102141, 2019. 
Bober, S., Brix, S., Riehl, T., Schwentner, M., and Brandt, A.: Does the Mid-Atlantic Ridge affect the distribution of abyssal benthic crustaceans across the Atlantic Ocean?, Deep-Sea Res. Pt. II, 148, 91–104, https://doi.org/10.1016/j.dsr2.2018.02.007, 2018. 
Böggemann, M.: Polychaetes (Annelida) of the abyssal SE Atlantic, Org. Divers. Evol., 9, 251–428, 2009. 
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Short summary
The patterns observed in the composition of polychaete assemblages were attributed to variations in food supply at the regional scale and nodule density at the local scale. The high levels of species replacement were mainly driven by rare species, leading to regional species pool estimates between 498 and 240 000 species. The high proportion of singletons seems reflect an under-sampling bias that is currently preventing the assessment of potential biodiversity loss due to nodule mining.
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