Diet shifts and population dynamics of estuarine foraminifera during ecosystem recovery after experimentally induced hypoxia crises
Diet shifts and population dynamics of estuarine foraminifera during ecosystem recovery after experimentally induced hypoxia crises
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实验诱发缺氧危机后生态系统恢复期间河口有孔虫的饮食变化和种群动态
DOI：
10.1016/j.ecss.2015.12.015
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Brouwer G
中科院分区：
文献类型：
--
作者：
Brouwer G
这项研究在生态系统恢复的更广泛的背景下展示了实验诱导的缺氧后的有孔虫动态。在沉积物中添加13C标记的重碳酸盐和葡萄糖来研究生态系统恢复过程中有孔虫的食物变化，并使用实验尺寸测量来推断种群动态。比较低氧处理和未受干扰的斑块，以区分自然(季节性)波动和低氧诱导的反应。考察了干扰时间和恢复时间对实验结果的影响。有孔虫饲料和种群动态显示，与对照相比，恢复斑块中的波动更大。德国海鞘和贝氏有孔虫的有孔虫食性和种群结构对生态系统恢复的进展阶段的反应是不同的，一般是相反的。Tracer推断了4月和6月的饮食估计，以及测试大小分布中两个明显可见的队列，讨论以反映6月份的繁殖情况，强烈表明，在冬季缺氧后生态系统恢复的第一个月期间，硅藻的充足可获得性可能是有利可图的。增强繁殖本身与随后的饮食转向细菌密切相关。测试维度的分布表明，在生态系统恢复过程中，该物种的种群结构波动较小，但可能是对诱导的冬季缺氧的反应而繁殖的。细菌似乎一直对德国硅藻的饮食做出更大的贡献。对于这两个物种的食物和试验大小分布，干扰的时机似乎比随后恢复期的持续时间有更大的影响。
This study shows foraminiferal dynamics after experimentally induced hypoxia within the wider context of ecosystem recovery.13C-labeled bicarbonate and glucose were added to the sediments to examine foraminiferal diet shifts during ecosystem recovery and test-size measurements were used to deduce population dynamics. Hypoxia-treated and undisturbed patches were compared to distinguish natural (seasonal) fluctuations from hypoxia-induced responses. The effect of timing of disturbance and duration of recovery were investigated. The foraminiferal diets and population dynamics showed higher fluctuations in the recovering patches compared to the controls. The foraminiferal diet and population structure ofHaynesina germanicaandAmmonia beccariiresponded differentially and generally inversely to progressive stages of ecosystem recovery. Tracer inferred diet estimates in April and June and the two distinctly visible cohorts in the test-size distribution, discussed to reflect reproduction in June, strongly suggest that the ample availability of diatoms during the first month of ecosystem recovery after the winter hypoxia was likely profitable toA. beccarii.Enhanced reproduction itself was strongly linked to the subsequent dietary shift to bacteria. The distribution of the test dimensions ofH. germanicaindicated that this species had less fluctuation in population structure during ecosystem recovery but possibly reproduced in response to the induced winter hypoxia. Bacteria seemed to consistently contribute more to the diet ofH. germanicathan diatoms. For the diet and test-size distribution of both species, the timing of disturbance seemed to have a higher impact than the duration of the subsequent recovery period.
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影响因子：
2.8
作者：
Montserrat, F.;Van Colen, C.;Herman, P. M. J.
通讯作者：
Herman, P. M. J.
底栖有孔虫的生物相互作用
影响因子：
1.9
作者：
J. Lipps
通讯作者：
J. Lipps
瑞典西海岸哈夫斯滕斯峡湾活体（染色）底栖有孔虫及其对季节性水文循环、周期性缺氧和初级生产的响应
影响因子：
2.8
作者：
Mathias Gustafsson;Kjell Nordberg
通讯作者：
Kjell Nordberg
河口潮汐滩涂大型底栖动物从缺氧中恢复
DOI：
--
发表时间：
2008
期刊：
影响因子：
--
作者：
C. Colen;F. Montserrat;M. Vincx;P. Herman;T. Ysebaert;S. Degraer
通讯作者：
S. Degraer
亚热带浅层潮下沙中微型底栖植物碳的转化和归宿：13C标记研究
DOI：
--
发表时间：
2012
期刊：
影响因子：
--
作者：
J. Oakes;B. Eyre;J. Middelburg
通讯作者：
J. Middelburg