TY - JOUR
T1 - The relationship between population attributes of the mud snail Amphibola crenata and sediment contamination
T2 - A multi-estuary assessment
AU - De Silva, Nuwan A.L.
AU - Marsden, Islay D.
AU - Gaw, Sally
AU - Glover, Chris N.
N1 - Publisher Copyright:
© 2022
PY - 2022/7
Y1 - 2022/7
N2 - This study assessed the potential of the New Zealand mud snail Amphibola crenata to act as a bioindicator of contaminated estuarine sediment. Seventeen sites with varying contaminant burdens were identified within six New Zealand regions. Attributes (population density, individual length distribution and individual dry weight condition index) were measured for field-collected A. crenata, and related to measurements of sediment trace metals and nutrients. Population density of the mud snail was relatively high in sites with elevated nutrients and organic matter. The length distribution of A. crenata showed significant regional and site-specific variations. Minimum, mean, and median shell length of A. crenata were positively correlated with sediment cadmium and zinc concentration. Overall, the sites were able to be distinguished by A. crenata population attributes and the sediment metal and nutrient content. These results suggest that A. crenata population information has potential value for assessing estuarine sediment metal and nutrient contamination.
AB - This study assessed the potential of the New Zealand mud snail Amphibola crenata to act as a bioindicator of contaminated estuarine sediment. Seventeen sites with varying contaminant burdens were identified within six New Zealand regions. Attributes (population density, individual length distribution and individual dry weight condition index) were measured for field-collected A. crenata, and related to measurements of sediment trace metals and nutrients. Population density of the mud snail was relatively high in sites with elevated nutrients and organic matter. The length distribution of A. crenata showed significant regional and site-specific variations. Minimum, mean, and median shell length of A. crenata were positively correlated with sediment cadmium and zinc concentration. Overall, the sites were able to be distinguished by A. crenata population attributes and the sediment metal and nutrient content. These results suggest that A. crenata population information has potential value for assessing estuarine sediment metal and nutrient contamination.
KW - Amphibola crenata
KW - Density
KW - Nutrients
KW - Size structure
KW - Trace metals
UR - http://www.scopus.com/inward/record.url?scp=85130383209&partnerID=8YFLogxK
U2 - 10.1016/j.marpolbul.2022.113762
DO - 10.1016/j.marpolbul.2022.113762
M3 - Journal Article
C2 - 35605377
AN - SCOPUS:85130383209
SN - 0025-326X
VL - 180
JO - Marine Pollution Bulletin
JF - Marine Pollution Bulletin
M1 - 113762
ER -