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Seagrass (Zostera marina) promotes nitrification potential and selects specific ammonia oxidizers in coastal sediments
期刊论文
JOURNAL OF SOILS AND SEDIMENTS, 2021, 页码: 15
作者:
Lin, Xianbiao
;
Zheng, Pengfei
;
Zou, Songbao
;
Sun, Feifei
;
Zhang, Xiaoli
;
Gong, Jun
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浏览/下载:761/312
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提交时间:2021/06/07
Seagrass meadow
Potential nitrification rates
Relative importance
Gene copy number
Specific lineage
烟台牟平海洋牧场季节性低氧对大型底栖动物群落的生态效应
期刊论文
生物多样性, 2019, 卷号: 27, 期号: 2, 页码: 200-210
作者:
李宝泉
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浏览/下载:567/106
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提交时间:2020/06/17
低氧
群落结构
群落恢复
敏感种
机会种
hypoxia
community structure
community recovery
sensitive species
opportunistic species
Hypoxia is a common phenomenon in the world's oceans, especially in the shallow waters of coastal zones. Rates of hypoxia are increasing due to global climatic changes and anthropogenic activities. Hypoxia can cause mass mortality of marine animals and can have severe negative impacts on marine ecosystems. To better understand the effects of hypoxia on macrobenthic communities, a survey was carried out in the Muping Marine Ranch (Yantai) during June, August and September of 2016. Results showed that seasonal hypoxia led to changes in benthic community structure, especially in terms of species composition and dominant species. The dominant species were Polychaeta Lumbrinereis latreilli, Sternaspis scutata and Mollusca Endopleura lubrica in summer. The opportunistic species Lumbrinereis latreilli increased, whereas, sensitive species such as Leptomya minuta, Glycera chirori, Upogebia major, Pontocrates altamarimus, Eriopisella sechellensis decreased during the hypoxic period of August. Hypoxia also reduced biodiversity indices. The effect of hypoxia on abundance and biomass were not significant, mainly because of the increase in the opportunistic Lumbrinereis latreilli, which counteracted the decline in abundance and biomass of other species. Individual physiological tolerance to hypoxia was different among species. Lumbrinereis latreilli showed higher tolerance to hypoxia in dissolved oxygen (DO) = 1.0 mg/L compared to other species. Some sensitive species, such as Leptomya minuta, Upogebia major, Pontocrates altamarimus and Eriopisella sechellensis showed lower tolerance when DO < 2.5 mg/L. When DO increased to 2.5 mg/L, the macrobenthic community start to recover gradually. The recovery extent and time needed were closely related to the degree of seasonal hypoxia.
Effects of bioturbation on the erodibility of cohesive versus non-cohesive sediments along a current-velocity gradient: A case study on cockles
期刊论文
JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY, 2017, 卷号: 496, 期号: 1, 页码: 84-90
作者:
Li, Baoquan
;
Cozzoli, Francesco
;
Soissons, Laura M.
;
Bouma, Tjeerd J.
;
Chen, Linlin
;
Bouma, Tjeerd J.(NIOZ Royal Netherlands Inst Sea Res, Dept Estuarine & Delta Syst EDS, POB 140, NL-4400 AC Yerseke, Netherlands)
;
Chen, Linlin(Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China)
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提交时间:2018/01/10
Cockle
Cerastoderma Edule
Bioturbation
Sediment Erosion
Erosion Threshold
Erosion Rates
Synthesis and catalytic performance of Al-MCM-48 and Ti-MCM-48
期刊论文
Open Materials Science Journal, 2015, 卷号: 9, 页码: 194-197
作者:
Zhixi, Zhao
;
Zhang, Liming
;
Chen, Ping
;
Kun, Yan
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提交时间:2016/12/19
Aluminum
Catalyst Activity
Phase Transitions
Styrene
Titanium
Al-mcm-48
Catalytic Performance
Conversion Rates
Hydrothermal Methods
Styrene Oxidation
Ti-mcm-48
Titanium Source
Transalkylation
A Quantitative Study of Gully Erosion Based on Object-Oriented Analysis Techniques: A Case Study in Beiyanzikou Catchment of Qixia, Shandong, China
期刊论文
SCIENTIFIC WORLD JOURNAL, 2014, 页码: 417325
作者:
Wang, Tao
;
He, Fuhong
;
Zhang, Anding
;
Gu, Lijuan
;
Wen, Yangmao
;
Jiang, Weiguo
;
Shao, Hongbo
;
He, FH (reprint author), Ludong Univ, Coll Geog & Planning, Yantai 264025, Peoples R China. fuhonghe112@126.com
;
shaohongbochu@126.com
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浏览/下载:910/213
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提交时间:2014/07/08
Land-cover
Classification
Imagery
Plateau
Areas
Rates