Eastern oyster ( Crassostrea virginica ) filtration, biodeposition, and sediment nitrogen cycling at two oyster reefs with contrasting water quality in Great Bay Estuary (New Hampshire, USA)
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| 024 | 7 | 0 | |a 10.1007/s10533-014-0034-7 |2 doi |
| 035 | |a (NATIONALLICENCE)springer-10.1007/s10533-014-0034-7 | ||
| 245 | 0 | 0 | |a Eastern oyster ( Crassostrea virginica ) filtration, biodeposition, and sediment nitrogen cycling at two oyster reefs with contrasting water quality in Great Bay Estuary (New Hampshire, USA) |h [Elektronische Daten] |c [Timothy Hoellein, Chester Zarnoch, Raymond Grizzle] |
| 520 | 3 | |a Benthic deposition of carbon (C) and nitrogen (N)-rich oyster biodeposits may increase denitrification, or anaerobic respiration of nitrate (NO3 −) to di-nitrogen gas (N2). However, environmental drivers of C and N dynamics in oyster biodeposits and reef-adjacent sediments require clarification. In July 2012, we collected intact sediment cores adjacent to and 15-20m away from two oyster reefs (Crassostrea virginica) in Great Bay, New Hampshire, USA: one reference site and one site with cultural eutrophication. We also measured seston, chlorophyll a, and in situ oyster feeding and biodeposition. Cores were incubated in continuous-flow chambers where inflow water received 15N-ammonium (NH4 +), 15NO3 −, or no isotopes (control). We quantified fluxes of dissolved nutrients and gasses (oxygen, 28N2, 29N2, 30N2, and argon) after 24h. Finally, we measured size-fractionated sediment organic matter. At the eutrophic site, abundant phytoplankton in the 5-28µm size range was correlated with enhanced oyster feeding rates and biodeposit quality (lower C:N). This site had greater denitrification rates in reef-adjacent cores relative to distal cores. Low production of 29,30N2 in 15NH4 + amended cores suggested water column or biodeposit NH4 + were unlikely to be converted to N2. At both sites, reef-adjacent cores had more shell and higher 29,30N2 production with 15NO3 − addition relative to distal cores, suggesting direct denitrification enhancement near reefs. Oysters likely increased sediment N2 production via high quality biodeposits (eutrophic site), and NO3 − diffusion via structural complexity of reef-adjacent sediment (both sites). Overall, results suggest oyster-mediated ecosystems services may be expected to vary with environmental conditions. | |
| 540 | |a Springer International Publishing Switzerland, 2014 | ||
| 690 | 7 | |a Biodeposits |2 nationallicence | |
| 690 | 7 | |a Clearance rate |2 nationallicence | |
| 690 | 7 | |a Denitrification |2 nationallicence | |
| 690 | 7 | |a Eutrophication |2 nationallicence | |
| 690 | 7 | |a Phytoplankton |2 nationallicence | |
| 700 | 1 | |a Hoellein |D Timothy |u Department of Biology, Loyola University Chicago, 1032 W Sheridan Rd, 60660, Chicago, IL, USA |4 aut | |
| 700 | 1 | |a Zarnoch |D Chester |u Department of Natural Sciences, Baruch College, City University of New York, 17 Lexington Ave, Box A-0506, 10010, New York, NY, USA |4 aut | |
| 700 | 1 | |a Grizzle |D Raymond |u Jackson Estuarine Laboratory and Department of Biological Sciences, University of New Hampshire, 85 Adams Point Road, 03824, Durham, NH, USA |4 aut | |
| 773 | 0 | |t Biogeochemistry |d Springer International Publishing |g 122/1(2015-01-01), 113-129 |x 0168-2563 |q 122:1<113 |1 2015 |2 122 |o 10533 | |
| 856 | 4 | 0 | |u https://doi.org/10.1007/s10533-014-0034-7 |q text/html |z Onlinezugriff via DOI |
| 898 | |a BK010053 |b XK010053 |c XK010000 | ||
| 900 | 7 | |a Metadata rights reserved |b Springer special CC-BY-NC licence |2 nationallicence | |
| 908 | |D 1 |a research-article |2 jats | ||
| 949 | |B NATIONALLICENCE |F NATIONALLICENCE |b NL-springer | ||
| 950 | |B NATIONALLICENCE |P 856 |E 40 |u https://doi.org/10.1007/s10533-014-0034-7 |q text/html |z Onlinezugriff via DOI | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Hoellein |D Timothy |u Department of Biology, Loyola University Chicago, 1032 W Sheridan Rd, 60660, Chicago, IL, USA |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Zarnoch |D Chester |u Department of Natural Sciences, Baruch College, City University of New York, 17 Lexington Ave, Box A-0506, 10010, New York, NY, USA |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Grizzle |D Raymond |u Jackson Estuarine Laboratory and Department of Biological Sciences, University of New Hampshire, 85 Adams Point Road, 03824, Durham, NH, USA |4 aut | ||
| 950 | |B NATIONALLICENCE |P 773 |E 0- |t Biogeochemistry |d Springer International Publishing |g 122/1(2015-01-01), 113-129 |x 0168-2563 |q 122:1<113 |1 2015 |2 122 |o 10533 | ||