New England coastal and adjacent Nova Scotia shelf waters have a reduced buffering capacity because of significant freshwater input, making the region’s waters potentially more vulnerable to coastal acidification. Nutrient loading and heavy precipitation events further acidify the region’s poorly buffered coastal waters. Despite the apparent vulnerability of these waters, and fisheries’ and mariculture’s significant dependence on calcifying species, the community lacks the ability to confidently predict how the region’s ecosystems will respond to continued ocean and coastal acidification. Here, we discuss ocean and coastal acidification processes specific to New England coastal and Nova Scotia shelf waters and review current understanding of the biological consequences most relevant to the region. We also identify key research and monitoring needs to be addressed and highlight existing capacities that should be leveraged to advance a regional understanding of ocean and coastal acidification.

Gledhill, D.K., M.M. White, J. Salisbury, H. Thomas, I. Mlsna, M. Liebman, B. Mook, J. Grear, A.C. Candelmo, R.C. Chambers, C.J. Gobler, C.W. Hunt, A.L. King, N.N. Price, S.R. Signorini, E. Stancioff, C. Stymiest, R.A. Wahle, J.D. Waller, N.D. Rebuck, Z.A. Wang, T.L. Capson, J.R. Morrison, S.R. Cooley, and S.C. Doney. 2015. Ocean and coastal acidification off New England and Nova Scotia. Oceanography 28(2):182–197, https://doi.org/10.5670/oceanog.2015.41.

» Supplemental Methods (115 KB pdf) Time-series analyses were evaluated at each of the locations denoted in Figure 4 using actual discrete time-series data where available (western Gulf of Maine, Long Island Sound) or by extracting estimates using the gridded data product produced by Signorini et al. (2013).

» Supplemental Table S1 (102 KB xlsx file) Organismal responses of New England/Nova Scotia region species or congeners to increased pCO2 conditions.  Responses are indicated in relation to the numbered treatments of each study.  Subscripts are used to indicate at which treatment pCO2 level a significant response was seen, compared to the lowest pCO2 treatment, unless otherwise noted.

» Table S1 References (244 KB pdf)

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