Institute for Marine and Antarctic Studies, University of Tasmania, Hobart TAS, 7004, Australia.
Institute for Marine and Antarctic Studies, University of Tasmania, Hobart TAS, 7004, Australia.
Mar Environ Res. 2020 Oct;161:105127. doi: 10.1016/j.marenvres.2020.105127. Epub 2020 Aug 26.
As foundation species, kelp support productive and species rich communities; however, the effects of kelp structure on mobile species within these complex natural systems are often difficult to assess. We used artificial reefs with transplanted kelp to quantify the influence of kelp patch size and density on fish assemblages including the arrival of recruiting cryptobenthic species. Large patches with dense kelp supported the highest abundance, species richness, and diversity of fishes, with the addition of dense kelp tripling biomass and doubling richness. The abundance of recruits in artificial collectors declined with patch size and was halved on reefs with sparse kelp compared to reefs with dense kelp or no kelp. These results highlight the importance of dense kelp cover in facilitating biodiversity and indicate that kelp addition could support the recovery of degraded coastal ecosystems. Kelp also apparently drives complex interactions affecting the recruitment/behaviour of some cryptobenthic species.
作为基础物种，海带支持生产力高且物种丰富的群落；然而，海带结构对这些复杂自然系统中移动物种的影响通常难以评估。我们使用带有移植海带的人工礁石来量化海带斑块大小和密度对鱼类群落的影响，包括招募cryptobenthic 物种的到来。大型、密集的海带斑块支持最高的鱼类丰度、物种丰富度和多样性，而密集的海带增加了三倍的生物量并使丰富度增加了一倍。在人工收集器中，随着斑块大小的增加，幼鱼的数量减少，与密集海带的珊瑚礁或没有海带的珊瑚礁相比，稀疏海带的珊瑚礁上的幼鱼数量减少了一半。这些结果强调了密集海带覆盖对促进生物多样性的重要性，并表明海带的添加可以支持退化沿海生态系统的恢复。海带显然还会影响某些 cryptobenthic 物种的繁殖/行为，从而产生复杂的相互作用。
