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首页> 外文期刊>Marine ecology >A comparison of growth patterns between non-indigenous Halophila nipponica and the native sympatric Zostera marina on the southern coast of the Korean peninsula
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A comparison of growth patterns between non-indigenous Halophila nipponica and the native sympatric Zostera marina on the southern coast of the Korean peninsula

机译：朝鲜半岛南部沿海非本土嗜盐锦鲤与同胞同胞Zostera滨海地区的生长方式比较

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摘要

The growth dynamics of two co-occurring seagrass species, Zostera marina and Halophila nipponica, were examined on the southern coast of the Korean peninsula. Zostera marina is a native dominant seagrass species in Korean coastal waters, whereas H. nipponica is a non-native tropical and subtropical species that has extended its distributional range to the temperate coastal areas of Korea. To examine the differences in the growth dynamics of H. nipponica and Z. marina, their morphology, density, productivity and biomass, as well as local environmental conditions, were monitored monthly from January 2008 to July 2009. Underwater irradiance at the study site was the highest in April 2009 and the lowest in January 2008. Water temperature ranged from 10.4 degrees C in January 2009 to 24.8 degrees C in September 2008. Significant differences in growth dynamics were observed between the species, due to the effect of water temperature at the study site. Density and areal productivity were the highest in April 2008 and June 2008, respectively, for Z. marina but the highest in July 2008 for H. nipponica. Leaf size, shoot height and shoot weight were the highest in July 2008 for Z. marina but the highest in August 2008 or September 2008 for H. nipponica. The productivity of both species was strongly correlated with water temperature at the study site. However, the productivity of these species was not strongly correlated with underwater irradiance or the nutrient availability of either the water column or sediment pore water. Zostera marina exhibited the ecological characteristics of a temperate seagrass, whereas H. nipponica retained the features of a subtropical/tropical seagrass, even after adapting to the temperate coastal waters of Korea.
机译：在朝鲜半岛南部海岸考察了两种同时出现的海草物种的生长动态，即Zostera marina和Halophila nipponica。 Zostera marina是韩国沿海水域的本地优势海草物种，而H. nipponica是非本地的热带和亚热带物种，其分布范围已扩展到韩国的温带沿海地区。为了检查H. nipponica和Z. marina生长动态的差异，从2008年1月至2009年7月每月监测其形态，密度，生产力和生物量以及当地环境条件。研究地点的水下辐照度为最高温度发生在2009年4月，最低发生在2008年1月。水温从2009年1月的10.4摄氏度到2008年9月的24.8摄氏度。研究地点。 Z. marina的密度和面生产力分别在2008年4月和2008年6月最高，而H. nipponica在2008年7月最高。叶尺寸，枝条高度和枝条重量在2008年7月对滨海假丝酵母最高，但在2008年8月或2008年9月对H. nipponica最高。两种物种的生产力都与研究地点的水温密切相关。但是，这些物种的生产力与水下辐照度或水柱或沉积物孔隙水的养分利用率均不强相关。 Zostera码头展现出温带海草的生态特征，而H. nipponica保留了亚热带/热带海草的特征，即使适应了韩国的温带沿海水域也是如此。

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