Abstract：
:Inorganic or bulk organic chemical indicators, including organic carbon (OC), total nitrogen, organic nitrogen (ON), fixed ammonium (N(fix)), exchangeable ammonium, exchangeable nitrate, organic phosphorus (OP), inorganic phosphorus (IP), and biogenic silica (BSi), were examined in a 3-m core collected in Jiaozhou Bay (JZB) to decipher how the environment has changed during the preceding two centuries of increasing anthropogenic influence in this region. Concentrations of BSi, OC, and OP reveal overall increases to ca.30 cm ( approximately 1984), then decreased toward the surface, probably reflecting a decrease in the productivity of overlying waters since 1984. Aquaculture might play an important role in the decrease of nutrient elements in the upper layers recorded in sediments. The decreased molar BSi/OC ratios upcore may be due to a change in dominance from large- to small-sized diatoms, as shown in other research. However, the shift may also be related to changes from heavily-silicified to lightly-silicified diatoms or to non-siliceous forms such as dinoflagellates. ON concentrations increased towards the surface sediment, which is most likely consistent with the increase in fertilizer application and wastewater discharge. Concentrations of IP, total P, and N(fix) all decreased conspicuously upcore at 41 cm depth ( approximately 1977), and were largely consistent with the decrease in rainfall and freshwater discharge to JZB. Our data suggest that the environment has significantly changed since the 1980s. Anthropogenic activities in the watersheds may exert a substantial influence on carbon cycling processes in estuaries and potentially the coastal ocean.
journal_name
Mar Pollut Bulljournal_title
Marine pollution bulletinauthors
Liu SM,Zhu BD,Zhang J,Wu Y,Liu GS,Deng B,Zhao MX,Liu GQ,Du JZ,Ren JL,Zhang GLdoi
10.1016/j.marpolbul.2010.04.003subject
Has Abstractpub_date
2010-09-01 00:00:00pages
1591-9issue
9eissn
0025-326Xissn
1879-3363pii
S0025-326X(10)00151-7journal_volume
60pub_type
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journal_title：Marine pollution bulletin
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journal_title：Marine pollution bulletin
pub_type： 杂志文章
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更新日期：2019-12-01 00:00:00
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journal_title：Marine pollution bulletin
pub_type： 杂志文章
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更新日期：2015-08-15 00:00:00
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journal_title：Marine pollution bulletin
pub_type： 杂志文章
doi：10.1016/j.marpolbul.2014.11.006
更新日期：2015-01-15 00:00:00
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journal_title：Marine pollution bulletin
pub_type： 杂志文章
doi：10.1016/j.marpolbul.2004.10.042
更新日期：2005-01-01 00:00:00
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journal_title：Marine pollution bulletin
pub_type： 杂志文章,评审
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更新日期：2006-11-01 00:00:00
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journal_title：Marine pollution bulletin
pub_type： 杂志文章
doi：10.1016/j.marpolbul.2016.09.010
更新日期：2016-12-15 00:00:00
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journal_title：Marine pollution bulletin
pub_type： 杂志文章
doi：10.1016/j.marpolbul.2009.02.016
更新日期：2009-07-01 00:00:00
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journal_title：Marine pollution bulletin
pub_type： 杂志文章
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更新日期：2019-06-01 00:00:00
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journal_title：Marine pollution bulletin
pub_type： 杂志文章
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更新日期：2018-01-01 00:00:00
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journal_title：Marine pollution bulletin
pub_type： 杂志文章
doi：10.1016/j.marpolbul.2003.08.016
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journal_title：Marine pollution bulletin
pub_type： 杂志文章
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journal_title：Marine pollution bulletin
pub_type： 杂志文章
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更新日期：2014-04-15 00:00:00
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journal_title：Marine pollution bulletin
pub_type： 历史文章,杂志文章
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journal_title：Marine pollution bulletin
pub_type： 杂志文章
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journal_title：Marine pollution bulletin
pub_type： 杂志文章
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更新日期：2018-02-01 00:00:00
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journal_title：Marine pollution bulletin
pub_type： 杂志文章
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更新日期：2019-03-01 00:00:00
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journal_title：Marine pollution bulletin
pub_type： 杂志文章
doi：10.1016/j.marpolbul.2012.01.008
更新日期：2012-01-01 00:00:00
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journal_title：Marine pollution bulletin
pub_type： 杂志文章
doi：10.1016/j.marpolbul.2016.01.019
更新日期：2016-03-15 00:00:00
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journal_title：Marine pollution bulletin
pub_type： 杂志文章
doi：10.1016/j.marpolbul.2007.12.019
更新日期：2008-01-01 00:00:00
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journal_title：Marine pollution bulletin
pub_type： 杂志文章
doi：10.1016/j.marpolbul.2020.111944
更新日期：2020-12-28 00:00:00
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journal_title：Marine pollution bulletin
pub_type： 杂志文章
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更新日期：2020-09-01 00:00:00
