Author(s): Ugland KI, Gray JS
One of the general characteristics of ecological communities is that the number of species accumulates with increasing area sampled. However, it is important to distinguish between the species–area relationship and species accumulation curves. The species–area relationship is concerned with the number of species in areas of different size irrespective of the identity of the species within the areas, whereas the species accumulation curve is concerned with accumulation rates of new species over the sampled area and depends on species identity.
2We derive an exact analytical expression for the expectance and variance of the species–accumulation curve in all random subsets of samples from a given area. The analytical species accumulation curve may be approximated by a semilog curve. Both the exact accumulation curve and its semilog approximation are independent of the underlying species abundance distributions, but are influenced strongly by the distribution of species among the samples and the spatial relationship of the samples that are randomized.
3To estimate species richness in larger areas than that sampled we take account of the spatial relationship between samples by dividing the sampled area into subareas. First a species–accumulation curve is obtained for randomized samples of all the single subareas. Then the species–accumulation curve for all combinations of two subareas is calculated and the procedure is repeated for all subareas. From these curves a new total species (T–S) curve is obtained from the terminal point of the subarea plots. The T–S curve can then be extrapolated to estimate the probable total number of species in the area studied.
4Data from the Norwegian continental shelf show that extrapolation of the traditional species–accumulation curve gave a large underestimate of total species richness for the whole shelf compared with that predicted by the T–S curve. Application of non-parametric methods also gave large underestimates compared with actual data obtained from more extensive sampling than the data analysed here. Although marine soft sediments sampled in Hong Kong were not as variable as those from the Norwegian shelf, nevertheless here the new method also gave higher estimates of total richness than the traditional species–accumulation approaches.
5Our data show that both the species–accumulation curve and the accompanying T–S curve apply to large heterogeneous areas varying in depth and sediment properties as well as a relatively small homogeneous area with small variation in depth and sediment properties.
Referred From: https://besjournals.onlinelibrary.wiley.com/doi/full/10.1046/j.1365-2656.2003.00748.x
Author(s): Taylor DI, Nixon SW, Granger SL, Buckley BA
Author(s): Cardoso PG, Raffaelli D, Pardal MA
Author(s): Odum EP
Author(s): Mc Lusky DS
Author(s): Morrisey DJ, Skilleter GA, Ellis JI, Burns BR, Kemp CE, et al.
Author(s): Blanchet H, de Montaudouin X, Lucas A, Chardy P
Author(s): Den Hartog C
Author(s): Green EP, Short FT
Author(s): Waycott M, Duarte CM, Carruthers TJB, Orth RJ, Dennison WC, et al.
Author(s): Larkum AWD, Orth RJ, Duarte CM
Author(s): Hillman K, Mc Comb, AJ, Walker DI
Author(s): Hemminga MA, Duarte CM
Author(s): Williams SL, Heck Jr K.L.
Author(s): Duarte C.M
Author(s): Airoldi L, Beck MW
Author(s): Ganthy F, Sottolichio A, Verney R
Author(s): Do VT, de Montaudouin X, Blanchet H, Lavesque N
Author(s): Mosbahi N, Boudaya L, Dauvin JC, Neifar N
Author(s): Hamza F, Hammouda A, Chokri MA, Selmi S
Author(s): Mosbahi N, Pezy JP, Dauvin JC, Neifar L
Author(s): De Frenne P, Graae BJ, Rodríguez-Sanchez F, Kolb A, Chabrerie O, et al.
Author(s): de Montaudouin X, Blanchet H, Bazairi H, Nazik A, Desclaux-Marchand C, et al
Author(s): Hawkins SJ, Sugden HE, Mieszkowska N, Moore PJ, Poloczanska E, et al.
Author(s): Hinz H, Capasso E, Lilley M, Frost M, Jenkins SR
Author(s): Kröncke I, Reiss H, Eggleton JD, Aldridge J, et al.
Author(s): Bali M, Gueddari M
Author(s): Sammari C, Koutitonsky VG, Moussa M
Author(s): Abdennadher A, Ramirez F, Romdhane MS, Ruiz LJ, Sanpera C
Author(s): Hamza F, Hammouda A, Selmi S
Author(s): Plus M, Sebastien D, Gilles T, Isabelle A, de Montaudouin X, et al.
Author(s): Shannon CE, Weaver W
Author(s): Pielou EC
Author(s): Fauchald K., Jumars PA
Author(s): Hily C, Bouteille M
Author(s): Pranovi F, Curiel D, Rismondo A, Marzocchi M, Scattolin M
Author(s): Afli A, Ayari R, Brahim M
Author(s): Jumars PA, Dorgan KM, Lindsay SM
Author(s): Borja A, Franco J, Perez V
Author(s): Muxika I, Borja A, Bald J
Author(s): Dauvin JC, Ruellet T
Author(s): Dauvin JC, Ruellet T
Author(s): Lavesque N, Blanchet H, de Montaudouin X
Author(s): Do VT, Blanchet H, de Montaudouin X, Lavesque N
Author(s): Clarke KR, Gorley RN
Author(s): Boström C, Bonsdorff E
Author(s): Connolly RM
Author(s): Paula J, Fidalgo Ecosta P, Gove D
Author(s): Sfriso A, Birkemeyer T, Ghetti PF
Author(s): Fredriksen S, De Backer A, Böstrom C, Christie H
Author(s): Bowden DA, Rowden AA, Martin JA
Author(s): Barnes RSK, Barnes MKS
Author(s): Teixeira H, Salas F, Pardal MA, Marques JC
Author(s): Do VT, de Montaudouin X, Lavesque N, Blanchet H, Guyard H
Author(s): Duffy JE
Author(s): Bachelet G, de Montaudouin X, Auby I, Labourg PJ
Author(s): Yamada K, Hori M, Tanaka Y, Hasegawa N, Nakaoka M
Author(s): Leopardas V, Uy W, Nakaoka M
Author(s): van der Heide T, Govers LL, de Fouw J, Olff H, van der Geest M, et al.
Author(s): Cavanaugh CM
Author(s): Anderson AE
Author(s): Castel J, Labourg PJ, Escaravage V, Auby I, Garcia ME
Author(s): Reise K, Herre E, Sturm M
Author(s): Nakamura Y, Turner JT
Author(s): Bel Hassen M, Drira Z, Hamza A, Ayadi H, Akrout F, et al.
Author(s): Coll M, Piroddi C, Steenbeek J, Kaschner K, Ben Rais Lasram F, et al.
Author(s): Pinardi N, Zavatarelli M, Arneri E, Crise A, Ravaioli M
Author(s): Bas C
Author(s): Albertelli G, Covazzi-Harriague A, Danovaro R, Fabiano M, Fraschetti S, et al.
Author(s): Salen-Picard C, Arlhac D
Author(s): Afli A, Boufahja F, Sadraoui S, Ben Mustapha K, Aissa P, et al.
Author(s): Blanchet H, Lavesque N, Ruellet T, Dauvin JC, Sauriau PG, et al.
Author(s): Reiss H, Kroncke I
Author(s): Hawkins SJ, Moore PJ, Burrows MT, Poloczanska E, Mieszkowska N, et al.
Author(s): Harley CDG, Hughes AR, Hultgren KM, Miner BG, Sorte CJB, et al.
Author(s): Helmuth B, Mieszkowska N, Moore P, Hawkins SJ