Record Details
Riverine discharges impact physiological traits and carbon sources for shell carbonate in the marine intertidal mussel Perumytilus purpuratus
ScholarsArchive at Oregon State University
| Field | Value |
|---|---|
| Title | Riverine discharges impact physiological traits and carbon sources for shell carbonate in the marine intertidal mussel Perumytilus purpuratus |
| Names |
Pérez, Claudia A.
(creator) Lagos, Nelson A. (creator) Saldías, Gonzalo S. (creator) Waldbusser, George (creator) Vargas, Cristian A. (creator) |
| Date Issued | 2016-05 (iso8601) |
| Note | This is the publisher’s final pdf. The published article is copyrighted by the Association for the Sciences of Limnology and Oceanography and can be found at: http://www.aslo.org/lo/index.html |
| Abstract | Anthropogenic modification watersheds and climate change have altered export from fluvial systems causing changes to the carbonate chemistry of river-influenced near shore environments. To determine the possible effects of riverine discharges on the mussel Perumytilus purpuratus, we performed in situ transplant experiments between river-influenced and open coastal habitats with contrasting seawater carbonate chemistries (i.e., pCO₂, pH, Ω[subscript]ar) across four regions covering a wide latitudinal range (32°55′S–40°10′S). The river-influenced habitats selected for transplant experiments were different than open coastal habitats; with higher pCO₂ (354–1313 μatm), lower pH (7.6–7.9) and Ω[subscript]ar values (0.4–1.4) than in open coastal area. Growth, calcification, metabolism were measured in a reciprocal transplant experiment to determine physiological responses associated with river-influenced sites and non-influenced control sites. Growth and calcification rates were higher in river-influenced habitats; however the organisms in this area also had lower metabolic rates, possibly due to enhanced food supply from river systems. Further analysis of carbon isotopic composition (δ¹³C) indicated that the relative contribution of seawater dissolved inorganic carbon (DIC) to the carbonate shells of P. purpuratus was much higher than respiratory carbon. Nevertheless, P. purpuratus incorporated between 7% and 26% of metabolic carbon in the shell depending on season. There was a strong, significant relationship between δ¹³C[subscript]POC and δ¹³C[subscript]Tissue, which likely influenced the isotopic composition of the shell carbon. |
| Genre | Article |
| Identifier | Pérez, C. A., Lagos, N. A., Saldías, G. S., Waldbusser, G., & Vargas, C. A. (2016). Riverine discharges impact physiological traits and carbon sources for shell carbonate in the marine intertidal mussel Perumytilus purpuratus. Limnology and Oceanography, 61(3), 969-983. doi:10.1002/lno.10265 |
