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Community dynamics of nematodes after Larsen ice-shelf collapse in the eastern Antarctic Peninsula
Hauquier, F.; Ballesteros-Redondo, L.; Gutt, J.; Vanreusel, A. (2016). Community dynamics of nematodes after Larsen ice-shelf collapse in the eastern Antarctic Peninsula. Ecol. Evol. 6(1): 305-317. https://dx.doi.org/10.1002/ece3.1869
In: Ecology and Evolution. John Wiley & Sons: Chichester. ISSN 2045-7758; e-ISSN 2045-7758, meer
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| Trefwoorden |
Biodiversity
Colonization
Halomonhystera Andrássy, 2006 [WoRMS]; Microlaimus de Man, 1880 [WoRMS]; Nematoda [WoRMS]
Marien/Kust |
| Author keywords |
Community dynamics; Ice-shelf collapse; Larsen B; Marine free-living Nematoda |
| Auteurs | | Top |
- Hauquier, F., meer
- Ballesteros-Redondo, L., meer
- Gutt, J.
- Vanreusel, A., meer
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| Abstract |
Free-living marine nematode communities of the Larsen B embayment at the eastern Antarctic Peninsula were investigated to provide insights on their response and colonization rate after large-scale ice-shelf collapse. This study compares published data on the post-collapse situation from 2007 with new material from 2011, focusing on two locations in the embayment that showed highly divergent communities in 2007 and that are characterized by a difference in timing of ice-shelf breakup. Data from 2007 exposed a more diverse community at outer station B.South, dominated by the genus Microlaimus. On the contrary, station B.West in the inner part of Larsen B was poor in both numbers of individuals and genera, with dominance of a single Halomonhystera species. Re-assessment of the situation in 2011 showed that communities at both stations diverged even more, due to a drastic increase in Halomonhystera at B.West compared to relatively little change at B.South. On a broader geographical scale, it seems that B.South gradually starts resembling other Antarctic shelf communities, although the absence of the genus Sabatieria and the high abundance of Microlaimus still set it apart nine years after the main Larsen B collapse. In contrast, thriving of Halomonhystera at B.West further separates its community from other Antarctic shelf areas. |
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