Review Article

Production and Emissions of Marine Isoprene and Monoterpenes: A Review

Table 1

Isoprene concentrations in seawater.

SpeciesLocation representedTimeStudy typeConcentration (pmol/L)Reference Notes

Southern OceanJan-Feb 2002Field1.8 out of patch; 7.3 in patchWingenter et al. 2004 [23]Southern Ocean Iron Enrichment Experiment (SOFEX)
Northeast PacificJul 2002Field2–6.5 out of patch; 5.5–12 in patchMoore and Wang 2006 [24]iron fertilization experiment
Bellinghausen Sea (Southern Ocean)Nov-Dec 1992Field1–20Broadgate et al. 1997 [3]diatoms correlated with highest concentrations
Mediterranean SeaMay and Oct 1990Field6.7–25Bonsang et al. 1992 [2]
SeawaterMace Head, IrelandSep-Oct 1998Field10–20.8Broadgate et al. 2004 [20]at coast and 3 km offshore
Florida Straits, Gulf StreamSep 1993Field9.8–50.8 at surfaceMilne et al. 1995 [25]to 91.2 at subsurface maxima
North SeaJun 1993–Jul 1994Field0.7–90Broadgate et al. 1997 [3]3 miles offshore; concentrations during Phaeocystis bloom (mucus-forming colony) lower than expected; diatoms correlated with highest concentrations; <2 in December, >10 in June
Primarily diatoms; dinoflagellateseastern Atlantic OceanMay 1997Field5–55Baker et al. 2000 [26]correlation to chlorophyll only accounts for a small portion of the variability
Pacific OceanApr–Jun 1987–1990Field3.6–98Bonsang et al. 1992 [2]
North PacificMay 2001Field<12–94; avg day 56, avg night 27Matsunaga et al. 2002 [27]
Colne Estuary, UKMar 2009Field enclosure0.7–900Acuna-Alvarez et al. 2009 [28]high values are freshwater end of estuary, low values marine end
Seaweed-filled rockpoolsMace Head, IrelandSep-Oct 1998Field enclosure24.9–865 (333 average)Broadgate et al. 2004 [20]concentration range over 9.5 hr monitoring in sunny day
gyre1998 annualRemote sensing (SeaWIFS)0.2–5Erickson and Hernandez 2002 [29]
coastal and mid-latitude1998 annualRemote sensing (SeaWIFS)5–80Erickson and Hernandez 2002 [29]
North Sea1998 annualRemote sensing (SeaWIFS)20–80Erickson and Hernandez 2002 [29]
DiatomsSouthern OceanJan-Feb 2002Remote sensing (SeaWiFS)(A) 3–130 (30 mean) in patch; (B) 1.4–34 (8.4 mean) in patchMeskhidze and Nenes 2006, 2007 [17, 30](A) use Palmer and Shaw 2005 for isoprene-chlorophyll relationship; (B) SOFEX scaled to SeaWiFS chlorophyll [23, 31]

References are grouped by study type (e.g., field or remote sensing-based modeling studies), in roughly increasing order of concentration.
Only first and second authors were listed to conserve space.