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Published in last 1 year |  In last 2 years |  In last 3 years |  All Please wait a minute... For Selected: Download Citations EndNote Reference Manager ProCite BibTeX RefWorks Toggle Thumbnails Select Influence of water quality factors on the ecological cultivation of Chinese mitten crabs in Yangcheng Lake WU Ke, WU Dong-mei, PAN Yun-sheng, QIAN Yu-lin, WU Jun-mei, XIA Yun-yu HUBEI AGRICULTURAL SCIENCES    2024, 63 (4): 123-126.   DOI: 10.14088/j.cnki.issn0439-8114.2024.04.023 Abstract （28）      PDF （2852KB）（4）       Knowledge map    Save An observation experiment site was established in Wushentan Village, Bacheng Town, Kunshan City to observe the water temperature, dissolved oxygen, pH, ammonia nitrogen and the growth dynamics of Chinese mitten crabs,to discuss the suitable water quality environment for the growth of crabs. The results showed that the water temperature had the greatest influence on crabs, with sudden changes in temperature or exceeding 30 ℃ leading to their death; dissolved oxygen showed a unimodal distribution during the day, indicating that algae contributed most to it. After mid-July, pH gradually decreased and leveled off, the lower overall value of ammonia nitrogen was beneficial for the growth of crabs. Water temperature around 28 ℃, dissolved oxygen maintained above 4 mg/L, and pH 7.5~8.5 were the suitable growth environment. Reference | Related Articles | Metrics Select Impacts of eco-spatial marine water changes on fish diversity in the Zhujiang River estuary WANG Chan HUBEI AGRICULTURAL SCIENCES    2024, 63 (4): 127-135.   DOI: 10.14088/j.cnki.issn0439-8114.2024.04.024 Abstract （26）      PDF （2156KB）（5）       Knowledge map    Save Data about fish diversity in the Zhujiang River estuary from 2016 to 2018 were collected for the water environment data analysis and species diversity assessment. The results of RDA analysis showed that water depth, dissolved oxygen, water coverage, salinity, pH and water temperature had certain influences on fish, among which the degree of chromium influence on fish diversity accounted for 25.92% of the variables of overall water quality. During the experimental period, the parameters of seawater quality changed over time, and the response of family, genus, and species of fish to nitrite and lead changes was the most senstitive, especially the Cyprinidae. The large amount of industrial pollution discharged affected the fish population size. In addition, chromium and petroleum substances were the significant conditions that determined the fish diversity in the Zhujiang River estuary and largely limited the activity value of ecological space. Reference | Related Articles | Metrics page Page 1 of 26 Total 52 records First page Prev page Next page Last page