Sponge richness on algae-dominated rocky reefs in the western Antarctic Peninsula and the Magellan Strait

Polar research

Emma M. Newcombe¹  Shane W. Geange²  Eduardo Hajdu³  James J. Bell⁴  Marcelo Gonzalez-Aravena⁵  César A. Cárdenas⁶ 

[1] Cawthron Institute Nelson, 98 Halifax Street, The Wood, Nelson 7010, New Zealand;Department of Conservation, 32 Manners St, Te Aro, Wellington 6011, New Zealand;National Museum Department of Invertebrates, Federal University of Rio de Janeiro, Quinta da Boa Vista, s/n, 2090-040, Rio de Janeiro, RJ, Brazil;School of Biological Sciences Victoria University of Wellington, P.O. Box 600, Wellington 6140, New Zealand;Scientific DepartmentChilean Antarctic Institute, Plaza Muñoz Gamero 1055, Punta Arenas 6200965, Chile;Scientific DepartmentChilean Antarctic Institute, Plaza Muñoz Gamero 1055, Punta Arenas 6200965, ChileCorrespondence

关键词: Porifera;    sponge–algae interactions;    Antarctica;    sub-Antarctic;    southern high-latitudes.;   

DOI  :  10.3402/polar.v35.30532

学科分类：自然科学（综合）

来源: Co-Action Publishing

【 摘 要 】

Sponges are important components of high-latitude benthic communities, but their diversity and abundance in algal-dominated rocky reefs has been underestimated because of the difficulty of in situ identification. Further, the influence of canopy-forming algae on sponge richness has been poorly studied in southern high-latitude rocky reefs compared to other latitudes. Here, we quantified taxon richness of sponges in algae-dominated rocky reefs at three sites in the western Antarctic Peninsula (62–64° S) and two sites in the Magellan region (53° S). We found higher sponge richness at sites in Antarctica (15) than in Magallanes (8), with Antarctic sponge richness higher than that reported for Arctic algal beds and similar to that reported for temperate regions. Estimated sponge richness at our Antarctic sites highlights diverse sponge assemblages (16–26 taxa) between 5 and 20 m that are typically dominated by macroalgae. Our results suggest that sponge assemblages associated with canopy-forming macroalgae on...

【 授权许可】

CC BY-NC