Factors affecting water quality and shrimp production in the mixed mangrove‐shrimp systems in the Mekong Delta of Vietnam
28/03/23 04:43PM
Trang Thuy Diem Ngo; Tung Chau Thanh Nguyen; Thao Thi Phuong Vo; Linh Kieu Tran; Nguyen, Thanh Hai; et al. Aquaculture Research; Oxford Vol. 53, Iss. 2, (Feb 2022): 497-517. DOI:10.1111/are.15595
Abstract:
The aim of the study was to identify key factors of
water environmental parameters affect shrimp productivities in the mixed
mangrove‐shrimp system using multivariate approach. Water quality assessment
was conducted at four mangroves stand ages (MAs) of 2–4, 5–7, 9–12 and
>12 years old, with two water level (WLs) regimes in the ponds at
0–20 cm and 20–40 cm, and at every interval of 15‐day grow‐out cycle
of shrimp in the systems based on the moon. Water quality in the study farms
was within the appropriate range for shrimp growth. Mangrove ages affected
alkalinity, pH, COD, N‐NO2, N‐NO3 and H2S, but did not influence the rest of water quality
parameters. Shrimp productivity had moderate‐to‐fair positive correlation (rp = >0.36 and <0.5; and rp > 0.5) with N‐NH4, N‐NH3, water level on the platform and water level
regimes management in the shrimp ponds respectively. The stepwise multiple
regression model fitted very well with 19 independent variables (p = 0.0000; R2 = 0.63) and shrimp productivity. The
equation of the fitted model is given as: Shrimp
productivity = 18.4552 + 2.34394*DO ‐ 1.01044*Salinity ‐
1.49646*H2S + 2.97012*Water level.
Fulltext:https://doi.org/10.1111/are.15595
(Source: https://www.proquest.com/scholarly-journals/factors-affecting-water-quality-shrimp-production/docview/2616483383/se-2?accountid=28030)