The influence of organic carbon on oxygen dynamics and bacterial sulfate reduction in inland shrimp ponds /
(C.V.= 4.5%). Shrimp survival in the ponds was low, however,
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1995.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | (C.V.= 4.5%). Shrimp survival in the ponds was low, however, (r.2 = 0.66). Furthermore, significant differences (p < []SO4-2, and SRB counts were estimated using most probable 0.05) in sulfate reduction were found between ponds that had 1 week-1, with a mean harvest weight of 20.8 g shrimp-1 473 kg shrimp ha-1 (C.V.= 34%), and was much lower than that been used for aquaculture in the previous season versus newly between organic matter content and sulfate reduction rates constructed ponds. Differences were consistent with the demonstrated between shrimp survival and rates of sulfate demonstrated that organic matter was the primary factor depths (24.7-3 1.0 MM) and did not appear to limit sulfate difference ([] = 0.05) in shrimp growth or survival could be Experiments conducted in saline aquaculture ponds for coastal shrimp ponds. No significant treatment found. Furthermore, no significant correlation could be growing season. Organic matter (feed) was added at low, hypothesis that sulfate reduction was regulated by organic influencing sediment sulfate reduction rates. Changes in magnitude, with highest values occurring at the end of the matter quantity and reactivity. medium, and high rates in a block design. The aquaculture nine 0.04-0.08 ha earthen shrimp ponds during a 17-week number analyses. Shrimp growth rates averaged 1. 2 g shrimp- of the season (mean: 84%) than in the beginning (< 2%). proportionally higher sulfate concentrations than undiluted ranging from 10.2-16.5% (mean = 12.4%). Shrimp yield averaged reduction represented a greater proportion of SOD at the end reduction. Over the growing season SOD increased four-fold, reduction. Sediment depth profiles showed close parallels season. Sulfide flux measurements demonstrated that sulfate seawater. SOD was measured in situ with an enclosed chamber; sediment oxygen demand (SOD), sulfate reduction rates, and Sediment porewater sulfate concentrations were high at all site was located in an and inland region near Imperial, SRB populations increased two orders of magnitude, and sulfate reducing bacteria (SRB) abundances were monitored in sulfate reduction rates increased over two orders of sulfate reduction rates were measured in cores using injected Texas, and utilized saline groundwaters of lower salinity and |
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| Item Description: | "Major subject: Wildlife and Fisheries Sciences". Vita. |
| Physical Description: | viii, 51 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references. |