Open Access Open Access  Restricted Access Subscription or Fee Access

Diversity and Similarity of Algal Communities from Upland Rice Fish Environment: A Case Study

S.K. Saikia, D.N. Das

Abstract


Raising fish in rice environments though gaining popularity in many countries, information of periphyton and plankton communities which are the important primary producer of waterlogged rice field environment have hardly reported. Therefore, to generate base line information, a study on diversity and similarity over the cropping period of periphytic and planktonic communities from the waterlogged rice fields of Apatani Plateau, Arunachal Pradesh of north east India has been conducted during May–October of 2002. The periphyton content collected randomly from submerged rice stems showed differences in population structure in comparison to plankton. Throughout the cropping period, Shannon-Weiner diversity indices of periphyton were higher (3.1770 to 3.5321) than plankton (2.1531 to 2.9687). Shannon-Weiner equitability index ranges from 0.7893 to 0.8855 for periphytic communities and 0.6461 to 0.7711 for plankton communities.

Keywords


Periphytic alga, rice-fish integration, Shannon-weinner index, self-substrating, Apatani plateau

Full Text:

PDF


Disclaimer/Regarding indexing issue:

We have provided the online access of all issues and papers to the indexing agencies (as given on journal web site). It’s depend on indexing agencies when, how and what manner they can index or not. Hence, we like to inform that on the basis of earlier indexing, we can’t predict the today or future indexing policy of third party (i.e. indexing agencies) as they have right to discontinue any journal at any time without prior information to the journal. So, please neither sends any question nor expects any answer from us on the behalf of third party i.e. indexing agencies.Hence, we will not issue any certificate or letter for indexing issue. Our role is just to provide the online access to them. So we do properly this and one can visit indexing agencies website to get the authentic information. Also: DOI is paid service which provided by a third party. We never mentioned that we go for this for our any journal. However, journal have no objection if author go directly for this paid DOI service.