| Taxonomic composition,abundance and biomass of mesozooplankton in the Zhelin Bay-an estuary with intensive aquaculture |
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| 作者姓名： | DONG Qiaoxiang LIN Xiaoping HE Xin KELSO W E HUANG Changjiang |
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| 作者单位： | DONG Qiaoxiang ~ 1，LIN Xiaoping ~ 2，HE Xin ~ 2，KELSO W E ~ 3，HUANG Changjiang ~ 1* 1. School of Environmental Science and Public Health，Wenzhou Medical College，Wenzhou 325035，China 2. Institute of Marine Biology，Shantou University，Shantou 515063，China 3. School of Renewable Natural Resources，Louisiana State University Agricultural Center，Baton Rouge，Louisiana 70803，USA |
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| 摘 要： | 1 IntroductionMesozooplankton (0.2 ~20 mm) are hetero-trophic animals that inhabit almost every type of ma-rine environment (Goswami and Padmavati, 1996;Uye et al., 1996). They are major secondary pro-ducers, grazing on phytoplankton and providing foodfor…
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| 关 键 词： | 河口湾 广东柘林湾 集约水产养殖区 中生浮游动物 分类学组成 丰度 生物量 |
| 收稿时间： | 2006-03-29 |
| 修稿时间： | 2006-07-03 |
Taxonomic composition,abundance and biomass of mesozooplankton in the Zhelin Bay-an estuary with intensive aquaculture |
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| DONG Qiaoxiang,LIN Xiaoping,HE Xin,KELSO W E,HUANG Changjiang.Taxonomic composition,abundance and biomass of mesozooplankton in the Zhelin Bay-an estuary with intensive aquaculture[J].Acta Oceanologica Sinica,2006,25(5):92-111. |
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| Authors: | DONG Qiaoxiang LIN Xiaoping HE Xin KELSO W E and HUANG Changjiang |
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| Institution: | 1.School of Environmental Science and Public Health, Wenzhou Medical College, Wenzhou 325035, China2.Institute of Marine Biology, Shantou University, Shantou 515063, China3.School of Renewable Natural Resources, Louisiana State University Agricultural Center, Baton Rouge, Louisiana 70803, USA |
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| Abstract: | The Zhelin Bay is an estuary that supports intensive aquaculture in South China. Aside from traditional nutrient inputs derived from waste water and agriculture, the increased intensification of aquaculture has accelerated eutrophication during the past decade, jeopardizing aquacultural production. Annual variations of mesozooplankton in the Zhelin Bay were described, providing baseline data for long-term ecological studies. The taxonomic composition, abundance and biomass of mesozooplankton were studied monthly from July 2001 to July 2002 at 19 stations. Collections yielded 73 taxa, including 60 species of copepods, three species of cladocerans, as well as tunicates, chaetognaths, polychaetes, medusae, ostracods, rotatori, amphipods, planktonic mollusks, pelagic larvae, and planktonic shrimps. The Zhelin Bay was dominated by small mesozooplankton, with 76% of the species smaller than 1.4 mm, and 97% of the individuals smaller than 1.0 mm. Dominant species (Paracalanus crassirostris, Oithona brevicornis,and Penilia avirostris) accounting for 60% of the total abundance were less than 0.6 mm in body length. Species diversity, biomass, and total abundance of mesozooplankton were greater in the samples collected outside the bay than inside the bay. Samples from the outer and eastern boundaries of the bay had greater biomass, diversity, and abundance than those from the inner and western boundaries. Total abundance and biomass had a unimodal annual pattern and were the greatest in August 2001 when water temperature was maximum, and the least in February 2002 when water temperature was minimum. Canonical correspondence analysis (CCA) revealed that temperature, turbidity, nutrients and salinity were the main determinants of spatial and temporal distributions of mesozooplankton in the Zhelin Bay, and six distinct zones were identified across the 19 sampling stations. |
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| Keywords: | Zhelin Bay mesozooplankton community structure spatial and temporal distribution aquaculture |
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