Gulf of Mannar Island coral reef associated gastropods assemblages: Distribution and diversity pattern

Mohanraj, J.; Chelladurai, G.; Balakrishnan, S.; Kuamr, Iruthayam Vijaya

doi:10.12980/jclm.3.2015jclm-2015-0023

Cited by 4 publications

(2 citation statements)

References 37 publications

(29 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A similar lack of singling out of 'Hare' community, as compared to 'Koswari' and 'Vaan' communities, is reported in an another study of reef-associated gastropod assemblages [32], considering the levels of (i) species diversity, (ii) species richness and (iii) evenness of species abundances. According to the usual convention of graphical representation for S.A.D.s, -Along the abscissa, member-species are ranked by decreasing values of their respective abundances (relative abundance 'a i ' for the species of rank 'i'); -Along the ordinate, the relative abundances are plotted according to a logarithmic scale (log 10 ) (although, for specific purpose, an ordinary untransformed scale may be adopted, as suggested in [29]).…”

Section: Estimated Total Species Richness Of Each Communitysupporting

confidence: 75%

The Full Hierarchical Structuration of Species Abundances Reliably Inferred from the Numerical Extrapolation of Still Partial Samplings: A Case Study with Marine Snail Communities in Mannar Gulf (India)

Béguinot

2018

AJEE

View full text Add to dashboard Cite

The detailed analysis of Species Abundance Distributions ("S.A.D.s") can shed light on how member-species organize themselves within communities, provided that the complete distribution of species abundances is made available first. In this perspective, the numerical extrapolation applied to incomplete "S.A.D." can effectively compensate for S.A.D.s incompleteness, when having to deal with substantially incomplete samplings. Indeed, almost as much information can be released from extrapolated "S.A.D.s" as would be obtained from truly complete "S.A.D.s", although the taxonomic identities of unrecorded species remain of course ignored by numerical extrapolation. To take full advantage of this new approach, a recently developed procedure allowing the leastbiased numerical extrapolation of "S.A.D.s" has been applied to three partially sampled gastropods communities associated to coral-reef in Mannar Gulf (S-E India). The following main results were derived from the three numerically completed "S.A.D.s": (i) once AJEE, 7(3): 1-27, 2018; Article no.AJEE.43918 2 completed, all three numerically "S.A.D.s" fairly well comply with the log-normal model, suggesting that, in all three communities, the process of hierarchical structuration of species abundances likely involves the combined contributions of many independent factors; (ii) moreover, the same holds true for each of the two coexisting feeding guilds (primary and secondary consumers) considered separately; (iii) when compared to secondary consumers, the guild of primary consumers has a much lower species richness but, on the other hand, exhibits a more strongly structured distribution of species abundances, which materializes not only in term of the apparent unevenness of species abundances but also after having disentangled the genuine intensity of the underlying process driving the hierarchical structuration. All the preceding features are shared in common by the three communities studied, in line with the similarity of their environmental contexts. Only minor features can actually slightly distinguish between communities, reflecting the difference in distances between them. Original Research Article

show abstract

Section: Estimated Total Species Richness Of Each Communitysupporting

confidence: 75%

The Full Hierarchical Structuration of Species Abundances Reliably Inferred from the Numerical Extrapolation of Still Partial Samplings: A Case Study with Marine Snail Communities in Mannar Gulf (India)

Béguinot

2018

AJEE

View full text Add to dashboard Cite

show abstract

“…Also some species (in particular among Conidae) feature emerging promises in medical applications. For all these reasons, addressing Gastropods species diversity, especially, now, at local scales, is considered important [1][2][3][4].…”

Section: Intoductionmentioning

confidence: 99%

Extrapolation of Total Species Richness from Incomplete Inventories: Application to the Gastropod Fauna Associated to Coral Reefs in ‘Mannar Gulf Biosphere Reserve’, India

Béguinot

2017

AJEE

View full text Add to dashboard Cite

Tropical coral reefs are known to harbor considerable biodiversity, especially among invertebrates. Gastropod fauna, as an important component of this biodiversity, yet remains poorly surveyed across most tropical reefs. Moreover, the few published inventories are generally far from being exhaustive, as is almost inevitable in practice with species-rich faunas. Hence the necessity of implementing a numerical extrapolation of species accumulation, providing both (i) estimates of the total species richness of the partially sampled sites and (ii) a way to predict the additional sampling effort needed to achieve a given additional gain in sampling completeness. Such numerical extrapolations were applied here to three partial inventories of Gastropod fauna associated to coral reefs in 'Mannar Gulf Biosphere Reserve'. To ensure the maximal possible accuracy for extrapolations, a newly derived procedure was implemented, designed to select the least-biased among nonparametric estimators of the number of still unrecorded species. The total species richness of Gastropods at each site was estimated between 49 and 53 species according to sites. Accordingly, the completeness of the reported inventories was estimated between 71% and 78%.

show abstract

Recent Developments and Chemical Diversity of Cone Snails with Special Reference to Indian Cone Snails

Palanisamy

Dhanabalan²,

Sundaresan

2018

Blue Biotechnology

View full text Add to dashboard Cite

Gulf of Mannar Island coral reef associated gastropods assemblages: Distribution and diversity pattern

Cited by 4 publications

References 37 publications

The Full Hierarchical Structuration of Species Abundances Reliably Inferred from the Numerical Extrapolation of Still Partial Samplings: A Case Study with Marine Snail Communities in Mannar Gulf (India)

The Full Hierarchical Structuration of Species Abundances Reliably Inferred from the Numerical Extrapolation of Still Partial Samplings: A Case Study with Marine Snail Communities in Mannar Gulf (India)

Extrapolation of Total Species Richness from Incomplete Inventories: Application to the Gastropod Fauna Associated to Coral Reefs in ‘Mannar Gulf Biosphere Reserve’, India

Recent Developments and Chemical Diversity of Cone Snails with Special Reference to Indian Cone Snails

Contact Info

Product

Resources

About