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SCI论文目录 |
Effects of the Stocking Density and Body Size of the Mitten Crab
(Eriocheir sinensis) on Aquatic Plant Biomass
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| 出 版 社：Journal of Freshwater Ecology |
| 发表时间：2001 |
| 台 站：
东湖湖泊生态系统试验站
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| 作 者： Jin, G; Xie, P; Li, Z |
| 点 击 率：2590 |
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| 关 键 字：null |
| 摘 要：null |
| 关 键 字(英文)：null |
摘 要(英文)： Experiments in tanks and cages were conducted to examine the
effects of stocking density and body size of the mitten crab
(Eriocheir sinensis) on transplanted submersed macrophyte biomass.
The early juvenile crab with 7.0 plus or minus 0.6 mm carapace
width (CW) had little effect on plant biomass, regardless of the
stocking densities. However, larger crabs (CW: 18.0 plus or minus
2.2, 35.0 plus or minus 3.6, and 60.0 plus or minus 5.7 mm)
significantly influenced plant biomass, especially at large
stocking densities. Predictive models, using crab body size and
stocking density, were generated to demonstrate effect of the
mitten crab on the changes of plant biomass. The results indicate
that dense mitten crab populations may adversely affect aquatic
plant communities, particularly when its animal food resources are
scarce.
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