Journal cover Journal topic
Biogeosciences An interactive open-access journal of the European Geosciences Union
Journal topic
Discussion papers
https://doi.org/10.5194/bg-2019-358
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-2019-358
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: research article 02 Oct 2019

Submitted as: research article | 02 Oct 2019

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Biogeosciences (BG).

Adult life strategy affects distribution patterns in abyssal isopods – implications for conservation in Pacific nodule areas

Saskia Brix1, Karen J. Osborn2, Stefanie Kaiser1,3, Sarit B. Truskey2, Sarah M. Schnurr1,4, Nils Brenke1, Marina Malyutina5, and Pedro M. Martinez1,4 Saskia Brix et al.
  • 1Senckenberg am Meer, German Centre for Marine Biodiversity Research (DZMB) c/o Biocenter Grindel, Center of Natural History, Universität Hamburg, Martin-Luther-King-Platz 3, 20146 Hamburg, Germany
  • 2Smithsonian National Museum of Natural History, 10th and Constitution Ave NW, Washington, DC, 20013, USA
  • 3CeNak, Center of Natural History, Universität Hamburg, Martin-Luther-King-Platz 3, 20146 Hamburg, Germany
  • 4University of Oldenburg, FK V, IBU, AG Marine Biodiversitätsforschung, Ammerländer Heerstraße 114–118, 26129 Oldenburg
  • 5A.V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, Palchevsky St, 17, Vladivostok 690041, Russia

Abstract. Aim of our study is to gain a better knowledge about the isopod crustacean fauna of the abyssal Clarion Clipperton Fracture Zone (CCZ) located in the central Pacific Ocean. In total, we examined 22 EBS samples taken at 6 abyssal areas in the central pacific manganese nodule area (CCZ and DISCOL). The dataset comprised 619 specimens belonging to 187 species of four different isopod families: 91 species (48.6 % of total) belonging to Munnopsidae, 63 (33.6 %) to Desmosomatidae, 24 (12.8 %) to Haploniscidae and 9 (4.8 %) to Macrostylidae. The total number of species found was relatively similar between sites ranging from 38 (German Contractor area) to 50 species (French contractor area). 68 species were represented by singeletons. The ranges of distribution differ between families. In total 77 % of the species were recorded in a single area (and thus being unique for this specific area), 13.9 % in 2 areas, 5.3 % in 3 areas, 2.6 % in 4 areas and 1 % in 5 areas. The proportion of species present in a single area increased in this sequence: Munnopsidae (75.8 %), Desmosomatidae (77.7 %) and Haploniscidae (83 %). A total of 6 (66.6 %) out of 9 species of Macrostylidae was recorded in a single area contrasted by the most common species being from this family, Macrostylidae_Macrostylis_M05 with 46 specimens (present in all areas besides DISCOL) followed by several species of Munnopsidae with 10 or more specimens in the dataset. The CCZ areas show the highest number of shared species. Generally, the high diversity in each area is reflected by a low similarity between sampling areas. The rarefraction curves indicate that species richness is similar between areas, but the real number of species is still not sampled. The most distant areas from the central CCZ, the APEI3 and DISCOL, are the most different.

Saskia Brix et al.
Interactive discussion
Status: open (until 13 Nov 2019)
Status: open (until 13 Nov 2019)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
[Subscribe to comment alert] Printer-friendly Version - Printer-friendly version Supplement - Supplement
Saskia Brix et al.
Saskia Brix et al.
Viewed  
Total article views: 117 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
84 30 3 117 9 0 0
  • HTML: 84
  • PDF: 30
  • XML: 3
  • Total: 117
  • Supplement: 9
  • BibTeX: 0
  • EndNote: 0
Views and downloads (calculated since 02 Oct 2019)
Cumulative views and downloads (calculated since 02 Oct 2019)
Viewed (geographical distribution)  
Total article views: 84 (including HTML, PDF, and XML) Thereof 84 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Cited  
Saved  
No saved metrics found.
Discussed  
No discussed metrics found.
Latest update: 15 Oct 2019
Publications Copernicus
Download
Short summary
The Clarion Clipperton Fracture Zone (CCZ) located in the Pacific is commercially the most important area of proposed manganese nodule mining. Extraction of these will influence the life and distribution of small deep-sea invertebrates like peracarid crustaceans, of which > 90 % are undescribed species new to science. We are doing a species delimitation approach as baseline for an ecological interpretation of species distribution and discuss the results in light of future deep-sea conservation.
The Clarion Clipperton Fracture Zone (CCZ) located in the Pacific is commercially the most...
Citation