Response of infaunal macrobenthos to the sediment granulometry in a tropical continental margin–southwest coast of India

Jayaraj, K. A.; Sheeba, P.; Jacob, J.; Revichandran, C.; Arun, P.K.; Praseeda, K.S.; Nisha, P.; Rasheed, Khalid A.

doi:10.1016/j.ecss.2007.11.016

Cited by 44 publications

(22 citation statements)

References 25 publications

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“…Fine sediment indicates an environment with weak currents, which allows fine particles to settle. In such an environment only a small amount of organic matter in suspension is available as food for filter feeders, which in turn prevents them from settling (Jayaraj et al, 2008). In the present study, a positive relationship between MD Φ and total benthic biomass indicated that sediment granulometric characterization was one of the main factors affecting the distribution of marcrofauna biomass and production.…”

Section: Relationship Between Macrofaunal Secondary Production Distrisupporting

confidence: 45%

Estimates of autumntime benthic secondary production in Laizhou Bay and adjacent Bohai Sea waters

Hua

Zhou

Zhang

et al. 2010

J. Ocean Univ. China

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The whole metazoan community inhabiting Laizhou Bay and adjacent Bohai Sea waters were sampled in late autumn, 2006. Secondary production estimates for macrofauna and meiofauna were made separately. Total benthic secondary production was as high as 8.38 ± 4.08 g ash-free dry weight (AFDW) m -2 a -1 , which represented the autumn production level. In general, macrofaunal secondary production in Laizhou Bay was much lower than that in adjacent Bohai Sea areas. In contrast, meiofaunal secondary production in Laizhou Bay was higher than that in adjacent Bohai Sea areas. Macrofauna contributed 61% to benthic secondary production (5.09 ± 3.26 g AFDW m -2 a -1 ), lower than the value in previous studies in Bohai Sea. Sediment granulometric characteristics and bottom-water salinity could explain the substantial variability in the macrofauna biomass and production. Meiofaunal production was an important component of benthic production and exceeded macrofauna production under exceptional conditions, e.g. in Laizhou Bay, where macrofauna was restricted. Chlorophyll pigments (Chl-a) concentrations in sediment explained the general meiofaunal biomass and production distribution here.

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Section: Relationship Between Macrofaunal Secondary Production Distrisupporting

confidence: 45%

Estimates of autumntime benthic secondary production in Laizhou Bay and adjacent Bohai Sea waters

Hua

Zhou

Zhang

et al. 2010

J. Ocean Univ. China

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“…Saraladevi et al, 1996;Shakori et al, 2001;Jayaraj et al, 2007;Jayaraj et al, 2008 confirmed that muddy sand can support high abundance of macrofauna and one of the factors governing on abundance is sediment texture.…”

Section: Discussionmentioning

confidence: 98%

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Farsi¹,

Seyfabadi²,

Owfi³

et al. 2015

Turk. J. Fish. Aquat. Sci.

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The spatial distribution of the macrobenthic community was studied along the Iranian coasts of Bushehr province during January and February 2013. Samples were collected with van Veen grab from intertidal (0 m) and subtidal (5 m and 10 m depths) zones at 16 stations designated in 6 transects, including 4 main harbors (Genaveh, Bandargah, Rostami and Asaluyeh) and 2 creeks (Farakeh and Shif). A total of 17 groups (taxa) of macrobenthos were identified, of which the most dominant assemblages belonged to Mollusca, Annelida and Arthropoda. Abundance and biomass are significantly higher in some stations and depths than others, which could be correlated with combination of factors. The average macrofaunal abundance and biomass ranged from 450 to 4380 indm -2 and its from 9 to 165 gm -2 , respectively. The highest abundance and biomass were observed at 10 m and intertidal depths, respectively.

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“…Based on the analyses of dated cores from the coastal area of Mumbai, the background level of C org in the sediment of the Mumbai region is considered to be between 1 and 1.5% (Sharma et al 1994). On the basis of 210 Pb dating, Jaiswar et al (2008) have shown that C org that was 1.5% during 1962 had increased to 2.1% during Parameters that were different significantly are indicated with asterisk. * P \ 0.01; ** P \ 0.001; *** P \ 0.0001 1997 due to the increased creek sewage input.…”

Section: Discussionmentioning

confidence: 99%

Impact of the changing ecology on intertidal polychaetes in an anthropogenically stressed tropical creek, India

Quadros

Sukumaran

Athalye³

2009

Aquat Ecol

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Polychaete assemblages and associated environment of 12 strategically selected intertidal stations along the extremely polluted Thane creek on the west coast of India were studied monthly for a year and compared with past available data to investigate changes in the creek ecology due to various anthropogenic activities like industrial, domestic, and solid waste disposal along with land reclamation. Shannon's index (H 0 ) varied spatially from 0.4 to 1.5, Margalef richness index (d) from 0.4 to 1.1, and evenness index (J) from 0.3 to 0.7 indicating poor polychaete diversity. Ceratonereis burmensis and Lycastis indica were the most abundant and omnipresent polychaetes in the creek indicating their tolerance and adaptability to various degrees of pollution. Hydro-sedimentological investigations revealed enhancement of total nitrogen (TN) and organic carbon (C org ) load and hypoxic levels of dissolved oxygen (DO) over the years. Silt component of sediment was increasing, with proportionate decrease in clay due to various anthropogenic disturbances. Species richness was correlated positively with clay and negatively with silt. The BIO-ENV analyses indicated the strong influence of NO 3 --N, clay and TN on the distribution patterns of polychaetes. Pollution-tolerant polychaetes like Lycastis ounaryensis and Polydora tentaculata were getting replaced by more pollution-resistant species like C. burmensis in the creek due to changing sediment texture, reduced oxygen levels, and increased C org and TN.

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Response of infaunal macrobenthos to the sediment granulometry in a tropical continental margin–southwest coast of India

Cited by 44 publications

References 25 publications

Estimates of autumntime benthic secondary production in Laizhou Bay and adjacent Bohai Sea waters

Estimates of autumntime benthic secondary production in Laizhou Bay and adjacent Bohai Sea waters

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Impact of the changing ecology on intertidal polychaetes in an anthropogenically stressed tropical creek, India

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