Characterization of coastal habitats and marine benthic communities of the sub-Antarctic Crozet archipelago using underwater imagery Author Lelièvre, Yann Author Gall, Line Le Author Dubois, Philippe Author Saucède, Thomas text Antarctic Science 2025 Cambridge, England 2025-02-25 37 3 134 153 https://doi.org/10.1017/s0954102024000543 journal article 10.1017/S0954102024000543 1365-2079 15817000

Table IV. Species richness and diversity indices of faunal and algal communities for each habitat type, including taxonomic richness (R), rarefied taxonomic richness (R rar), Shannon diversity (N), rarefied Shannon diversity (N rar), Simpson diversity (1/ λ) and rarefied Simpson diversity (1/ λ rar).

	Species richness		Shannon diversity		Simpson diversity
a Rarefied to 128 individuals. b Rarefied to 5 images. c Rarefied univariate measures for algae were estimated from presence-absence data.
Habitat type	R	R rar	N	N rar	1/ λ	1/ λ rar
Fauna
Sand	14	6 a	2.117	2.039 a	1.499	1.493 a
Sand-cables	2	1 a	1.890	2.520 a	1.800	3.000 a
Sand-pebbles	14	10 a	3.601	3.457 a	2.489	2.468 a
Sand-pebbles-cables	7	7 a	3.753	3.753 a	3.137	3.137 a
Pebbles	5	4 a	1.262	1.245 a	1.093	1.092 a
Rock	40	14 a	7.950	7.201 a	5.366	5.193 a
Suspended cables	14	12 a	5.526	5.394 a	3.402	3.378 a
Algae
Sand	8	0 b,c	4.476	0.230 b,c	3.898	0.229 b,c
Sand-cables	7	7 b,c	4.950	6.340 b,c	4.029	5.973 b,c
Sand-pebbles	8	7 b,c	5.206	6.046 b,c	4.032	5.590 b,c
Sand-pebbles-cables	8	7 b,c	3.175	6.751 b,c	2.201	6.412 b,c
Pebbles	5	4 b,c	4.192	3.860 b,c	3.875	3.527 b,c
Rock	14	7 b,c	5.575	6.380 b,c	4.185	5.629 b,c
Suspended cables	5	5 b,c	3.611	4.559 b,c	3.119	4.235b,c