To investigate the survival, growth, and physiological responses of Zostera marina transplants to different water velocities and determine the optimal flow velocity range, an experiment was conducted. The study aimed to elucidate the effects of water velocity on Z. marina transplants by measuring and evaluating their survival rates, growth performance, and physiological indicators, as well as examining the interrelationships among these factors. Results indicated that the survival rate of transplanted Z. marina plants peaked at 0.4 m/s, being 1.1−2.4 times higher than those in the other treatments (P < 0.05). Notably, all plants in the control group perished. Aboveground tissue growth decreased progressively with increasing water velocity, while belowground tissue growth increased gradually. Specifically, leaf elongation rate at 1 m/s was 24.0% lower compared to 0.2 m/s, whereas belowground dry weight at 0.4 m/s was 1.6 times higher than that at 0.2 m/s. Photosynthetic pigment and nonstructural carbohydrates contents in leaves reached their lowest levels between 0.4 and 0.6 m/s, decreasing by 0.8% to 18.5% relative to other treatments. Considering the survival and growth comprehensive income index and physiological index stability coefficient, the suitable flow velocity range for Z. marina transplants is 0.3 to 0.8 m/s, with an optimal range of 0.4 to 0.6 m/s. These findings suggest that moderately increasing water flow velocity can facilitate the rapid establishment and expansion of Z. marina transplants.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |