Spatio-temporal distribution of meiofaunal assemblages and its relationship with environmental factors in a semi-enclosed bay.

Abstract:

:In order to reveal the spatio-temporal distribution of meiofaunal assemblages and its relationship with environmental factors in semi-enclosed bay habitats, meiofaunal and sediment samples were collected in February (winter), May (spring), August (summer) and November (autumn) 2014 in Jiaozhou Bay, China. A total of 20 meiofaunal taxa were identified. The most dominant group was free-living marine nematode, followed by benthic copepod. During the four sampling seasons, the values of meiofaunal average abundance were (912.3 ± 603.1), (1576.4 ± 659.5), (1074.6 ± 417.6), (2152.4 ± 1062.3) ind./10 cm2 while those of biomass were (575.0 ± 398.5), (874.3 ± 518.4), (617.9 ± 337.8), (1203.6 ± 719.6) μg dwt/10 cm2, respectively. In terms of vertical distribution, meiofauna were mainly found in the (0-2) cm sediment layer (59.92%), followed by (2-5) cm layer (28.25%) and (5-8) cm layer (11.82%). Results of correlation analysis showed that bottom water temperature was the main factor influencing meiofaunal distribution and food source (sediment organic matter content) was the main factor influencing meiofaunal assemblages.

journal_name

Mar Pollut Bull

authors

Gao C,Liu X

doi

10.1016/j.marpolbul.2018.03.047

subject

Has Abstract

pub_date

2018-06-01 00:00:00

pages

45-52

issue

Pt A

eissn

0025-326X

issn

1879-3363

pii

S0025-326X(18)30211-X

journal_volume

131

pub_type

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