Heather Freddie J, Blanchard Julia L, Edgar Graham J, Trebilco Rowan, Stuart-Smith Rick D
Institute for Marine and Antarctic Studies, University of Tasmania, 20 Castray Esplanade, Battery Point, Hobart, TAS, 7004, Australia.
CSIRO Oceans and Atmosphere, Battery Point, Hobart, TAS, 7004, Australia.
Ecol Lett. 2021 Mar;24(3):572-579. doi: 10.1111/ele.13661. Epub 2020 Dec 17.
The frequency distribution of individual body sizes in animal communities (i.e. the size spectrum) provides powerful insights for understanding the energy flux through food webs. However, studies of size spectra in rocky and coral reef communities typically focus only on fishes or invertebrates due to taxonomic and data constraints, and consequently ignore energy pathways involving the full range of macroscopic consumer taxa. We analyse size spectra with co-located fish and mobile macroinvertebrate data from 3369 reef sites worldwide, specifically focusing on how the addition of invertebrate data alters patterns. The inclusion of invertebrates steepens the size spectrum, more so in temperate regions, resulting in a consistent size spectrum slope across latitudes, and bringing slopes closer to theoretical expectations based on energy flow through the system. These results highlight the importance of understanding contributions of both invertebrates and fishes to reef food webs worldwide.
动物群落中个体体型的频率分布（即体型谱）为理解食物网中的能量流动提供了有力的见解。然而，由于分类学和数据限制，对岩石礁和珊瑚礁群落中体型谱的研究通常仅关注鱼类或无脊椎动物，因此忽略了涉及整个宏观消费者类群范围的能量途径。我们分析了来自全球3369个礁体地点的鱼类和移动大型无脊椎动物的共定位数据的体型谱，特别关注无脊椎动物数据的加入如何改变模式。纳入无脊椎动物使体型谱变陡，在温带地区更为明显，从而导致不同纬度间的体型谱斜率一致，并使斜率更接近基于系统能量流动的理论预期。这些结果凸显了了解无脊椎动物和鱼类对全球礁体食物网贡献的重要性。
