The Influence of Leaf Type on Carbon and Nitrogen Assimilation by Aquatic Invertebrate Communities: A New Perspective on Trophic Efficiency
The Influence of Leaf Type on Carbon and Nitrogen Assimilation by Aquatic Invertebrate Communities: A New Perspective on Trophic Efficiency
复制标题
叶子类型对水生无脊椎动物群落碳氮同化的影响:营养效率的新视角
DOI:
10.1007/s10021-020-00550-3
复制
发表时间:
2021
期刊:
影响因子:
3.7
通讯作者:
Marks, Jane C.
中科院分区:
文献类型:
--
作者:
Siders, Adam C.;Compson, Zacchaeus G.;Hungate, Bruce A.;Dijkstra, Paul;Koch, George W.;Marks, Jane C.
Despite abounding evidence that leaf litter traits can predict decomposition rate, the way these traits influence trophic efficiency and element transfer to higher trophic levels is not resolved. Here, we used litter labeled with13C and15N stable isotopes to trace fluxes of litter C and N from four leaf types to freshwater invertebrate communities. We measured absolute (mg C or N) and relative assimilation (percentage of litter C or N incorporated into invertebrate biomass relative to C and N lost during decomposition). Four patterns emerged: (1) Invertebrate communities assimilated more C and N from slowly decomposing litter than communities feeding on rapidly decomposing litter; (2) absolute assimilation of both C and N in leaf packs was positively correlated with the relative biomass of invertebrate taxa in leaf packs; (3) Chironomidae larvae, which colonize packs in the early decomposition stages, assimilated the most C and N by the end of the 35-day experiment; and (4) most taxa, spanning five functional feeding groups (collector–gatherers, shredders, collector–filterers, scrapers, and predators), showed similar patterns in both absolute and relative assimilation across leaf types. These results challenge traditional views of litter quality by demonstrating that trophic efficiency is negatively associated with decomposition rate across these four leaf types.
登录
查看更多内容
影响因子:
2.7
作者:
F. Bärlocher
通讯作者:
F. Bärlocher
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
N. Chung;K. Suberkropp
通讯作者:
K. Suberkropp
DOI:
--
发表时间:
1987
期刊:
影响因子:
--
作者:
A. Spain;R. Feuvre
通讯作者:
R. Feuvre
影响因子:
4.8
作者:
HUMPHREYS, WF
通讯作者:
HUMPHREYS, WF
DOI:
10.1146/annurev-ecolsys-110218-024755
发表时间:
2019-11
期刊:
Annual Review of Ecology, Evolution, and Systematics
影响因子:
--
作者:
J. Marks
通讯作者:
J. Marks