Jones Martin, Pinn Eunice
School of Conservation Sciences, Bournemouth University, Fern Barrow, Poole, Dorset BH12 5BB, United Kingdom.
Mar Pollut Bull. 2006;53(1-4):63-71. doi: 10.1016/j.marpolbul.2005.09.018. Epub 2005 Oct 24.
Blooms of macroalgal matting are increasingly common within temperate zones and are often comprised of opportunistic species such as Ulva lactuca. Where this algae forms a dense mat, a stressful environment is created in the sediment below, influencing the invertebrate infaunal assemblage. This study was conducted over a six month period during which a dense mat of U. lactuca developed and subsequently dispersed. The algal mat was found to have a significant negative impact on species richness, abundance and biomass of the macroinfauna. However, a faunal community developed within the algal mat which contained several species not previously observed. This community increased the abundance and diversity of the overall invertebrate assemblage. The results are discussed in relation to impacts on the ecosystem as a whole.
大型海藻席状藻华在温带地区越来越常见，通常由诸如石莼等机会性物种组成。当这种藻类形成密集的藻席时，会在下方沉积物中营造出压力环境，影响底栖无脊椎动物群落。本研究历时六个月，在此期间石莼密集藻席形成并随后消散。结果发现藻席对大型底栖动物的物种丰富度、丰度和生物量有显著负面影响。然而，在藻席内形成了一个动物群落，其中包含几种以前未观察到的物种。这个群落增加了整个无脊椎动物组合的丰度和多样性。本文讨论了这些结果对整个生态系统的影响。
