Journal of Food, Agriculture and Environment




Vol 14, Issue 2,2016
Online ISSN: 1459-0263


A comparison of the freshwater fungal community during the non-rainy and rainy seasons in a small black water lake in Amazonas, Brazil


Author(s):

A.C.A. Cortez 1, M. A. Sanches 2, S.E. Zelski 3, 4, João Vicente Braga de Souza 1*

Recieved Date: 2016-01-15, Accepted Date: 2016-03-30

Abstract:

Freshwater fungi are important decomposers of submerged woody and herbaceous debris in aquatic ecosystems. This study compared the biodiversity of the fungal community between the non-rainy and rainy seasons in a small black water lake in Amazonas, Brazil. A total of four collections of submerged wood were made over a period of one year (May, August and November 2013, and February 2014). For each collection, 30 pieces of submerged woody debris were collected and examined for fungi to investigate seasonal variation. A total of 264 individual fungi were recorded comprising 25 taxa, of which 16 were meiosporic ascomycetes and 9 were mitosporic ascomycetes. The occurrence of these fungi was recorded and the Shannon-Weiner index (H´) was used to evaluate the fungal diversity. The fungal community on woody substrates during rainy months was compared with non-rainy months and had a similarity index of 0.6842. The diversity index was higher in rainy months (H´ = 2.6012) than in non-rainy months (H´ = 2.1296) and this may be related to the seasonality of the rainy months due to the leaching phenomenon in the rainy period, although evenness (E = 0.600822) was higher in non-rainy months. This study shows that there is a rich and balanced freshwater fungal biodiversity in black water ecosystems. The study also highlights that future studies are needed to improve the limited knowledge of the distribution patterns, ecology, and species identities of freshwater ascomycetes in the aquatic habitats of Northern Brazil.

Keywords:

Amazon, decomposition, diversity, freshwater Ascomycetes, wood


Journal: Journal of Food, Agriculture and Environment
Year: 2016
Volume: 14
Issue: 2
Category: Environment
Pages: 156-161


View full PDF
Information:

Note to users

The requested document is freely available only to subscribers/registered users with an online subscription to the Journal of Food, Agriculture & Environment. If you have set up a personal subscription to this title please enter your user name and password. All abstracts are available for free.

Article purchasing

If you like to purchase this specific document such as article, review or this journal issue, contact us. Specify the title of the article or review, issue, number, volume and date of the publication. Software and compilation, Science & Technology, all rights reserved. Your use of this website details or service is governed by terms of use. Authors are invited to check from time to time news or information.


Purchase this Article:   20 Purchase PDF Order Reprints for 15

Share this article :