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首页> 外文期刊>Marine ecology progress series >Functional role of the soft coral Dendronephthya australis in the benthic food web of temperate estuaries
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Functional role of the soft coral Dendronephthya australis in the benthic food web of temperate estuaries

机译：温带河口底栖食物网中软珊瑚Dendronephthya australis的功能作用

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The soft coral Dendronephthya australis, with its limited distribution along the central New South Wales (NSW) coastline, forms a habitat within the benthic estuarine environment that supports commercially significant and protected marine species. However, the functional role of the soft coral within this system is unknown. Organisms from primary producers through to secondary consumers were sampled from soft coral and sponge habitats inside the Port Stephens estuary, NSW, Australia in 2014. A food web model of the benthic habitat, created using stable isotopes of carbon and nitrogen, was used to describe the functional role of the soft coral in comparison to sponges, another important habitat for commercially significant and protected marine species. Primary consumers accessed a range of benthic and pelagic energy sources; however, secondary consumers were almost entirely dependent on pelagic energy sources. Soft coral and sponges accessed different primary sources for their energy requirements. There was no evidence that D. australis was used as a direct food source by consumers other than nudibranchs. In contrast, sponges were trophically linked with secondary consumers and are likely to play a direct role in pelagic energy transfer. Amphipods collected from the branches of D. australis were identified as major prey components in the diet of protected syngnathids, suggesting that while the soft coral functions as critical habitat, it is indirectly linked to higher trophic levels.
机译：软珊瑚Dendronephthya australis沿新南威尔士州中部海岸线分布有限，在底栖河口环境中形成了栖息地，为具有商业意义和受保护的海洋生物提供了支撑。但是，该系统中软珊瑚的功能角色尚不清楚。 2014年从澳大利亚新南威尔士州斯蒂芬斯港河口内的软珊瑚和海绵生境中采样了从初级生产者到次级消费者的生物。使用稳定的碳和氮同位素创建的底栖生物食物网模型用于描述与海绵相比，软珊瑚的功能作用是海绵，海绵是商业上重要的受保护海洋物种的另一个重要栖息地。主要消费者使用了各种底栖和中上层能源。但是，二级消费者几乎完全依赖中上层能源。软珊瑚和海绵由于能源需求而使用了不同的主要资源。没有证据表明，除裸udi分支以外，消费者还使用了南方杜鹃作为直接食物来源。相比之下，海绵与次要消费者有营养联系，并且可能在上层能量传递中发挥直接作用。从澳大利亚龙虾的分支中收集的两栖类动物被确定为受保护的突触类鱼类饮食中的主要猎物成分，这表明，尽管软珊瑚是重要的栖息地，但与较高的营养水平间接相关。

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