期刊
OECOLOGIA
卷 196, 期 3, 页码 877-889出版社
SPRINGER
DOI: 10.1007/s00442-021-04973-0
关键词
Wood decomposition; Wood fall; Shipworm; Stable isotope; Model selection
类别
资金
- [222580]
- [237855]
The study evaluated the contribution of potential food sources to the diet of wood borers, finding that wood-derived organic carbon was the main carbon source for the teredinids, while POM accounted for 37.9% of their carbon source. Additionally, one species relied on both POM and wood log for their nitrogen source, while the other three species depended on either POM or wood log for nitrogen.
Marine wood-boring invertebrates rapidly fragment coarse woody debris in the sea. These wood borers have the ability to digest wood cellulose, but other potential food sources have been less investigated. To assess the contribution of each potential food source to the diet of wood borers, we traced seasonal and environmental changes in delta C-13 of shipworms cultured under the same experimental conditions and related these changes to variations in delta C-13 of potential food sources, i.e., wood log and particulate organic matter (POM) by using multiple linear regression models rather than the Bayesian mixing model. Based on the standardized partial regression coefficients in the model, it became clear that wood-derived organic carbon was the main carbon source for the teredinids, and POM also accounted for 37.9% of the teredinids' carbon source. Furthermore, we clarified variations in supplemental nitrogen sources for the teredinids: one species depended on both POM and wood log, whereas the other three species depended on either POM or wood log for their nitrogen source. delta C-13 values of another wood-boring bivalve of Martesia (Pholadidae) increase as it grows, which suggests that the bivalve switches its feeding strategy from xylophagous to filter feeding as it grows. Wood borers are known to accelerate the transfer of organic materials derived from wood logs to marine ecosystems. However, this study suggests that autochthonous production strongly contribute to the diet of marine wood borers, helping them to decompose wood logs in temperate shallow water.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据