Effect of acidification on elemental and isotopic compositions of sediment organic matter and macro‐invertebrate muscle tissues in food web research

摘要: Stable isotope techniques in food web studies often focus on organic carbon sources which are subsequently assimilated the tissue of consumer organisms through diet. The presence non-dietary carbonates bulk samples can affect their δ(13)C values, altering how results interpreted. Acidification is a common practice to eliminate any inorganic present prior analysis. We examined effects pre-analysis acidification two size fractions sediment matter (SOM) from marine and freshwater wetlands pure muscle invertebrate (Cherax destructor). elemental content isotopic ratios nitrogen were compared between paired acidified control treatments. Our showed that does not or values SOM. In environment depleted δ(15)N fine fraction saltmarsh mangrove Whilst did change tissue, affected. recommend researchers considering using material prepared for stable analysis formal assessment effect particular sample type should be undertaken. Further detailed investigation understand impact muscular tissues required.