Response of Vallisneria spinulosa (Hydrocharitaceae) to contrasting nitrogen loadings in controlled lake mesocosms
Response of Vallisneria spinulosa (Hydrocharitaceae) to contrasting nitrogen loadings in controlled lake mesocosms
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苦草(Hydrocharitaceae)对受控湖泊中生态系统氮负荷对比的响应
DOI:
10.1007/s10750-015-2456-1
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发表时间:
2016-02
期刊:
影响因子:
2.6
通讯作者:
Li Wei
中科院分区:
文献类型:
--
作者:
Zhao Suting;Yin Liyan;Chang Fengyi;Olsen Saara;Sondergaard Martin;Jeppesen Erik;Li Wei
The role of nitrogen (N) in the shift from a macrophyte-dominated state to a phytoplankton-dominated one at high N concentrations in shallow lakes is still debated. To elucidate possible toxic and ecological effects of high N on macrophyte growth, we conducted a short-term (40 day) study of a eutrophication-tolerant macrophyte, Vallisneria spinulosa (Hydrocharitaceae), incubated in pots in a mesocosm system subjected to different N concentrations (1, 3, and 5 mg l−1). Plant leaf and root length as well as growth rate decreased significantly with increased N concentrations, but most N- and P-related physiological parameters, including the soluble protein content, nitrate reductase activity, acid phosphatase activity, and tissue N and P contents, did not differ significantly among the N treatments. Only the alkaline phosphatase activity differed, being lower at high nitrogen loading, likely due to P limitation. Epiphyton and phytoplankton biomasses increased significantly with increasing N loading. Our results including a large number of physiological tests of the macrophytes, therefore, provide supporting evidence that the loss of submerged macrophytes, like V. spinulosa, seen at high N loading in shallow lakes, can be attributed to competition with phytoplankton and epiphyton rather than to toxic effects.
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DOI:
10.29356/jmcs.v56i1.279
发表时间:
2017-10
期刊:
Revista de la Sociedad Química de Mexico
影响因子:
--
作者:
Luisa Mola Morales;N. Gutierrez;Vanessa Maya;C. Parra;E. Martínez‐Barajas;P. Coello
通讯作者:
Luisa Mola Morales;N. Gutierrez;Vanessa Maya;C. Parra;E. Martínez‐Barajas;P. Coello
影响因子:
2.6
作者:
N. Zhang;Hongjing Li;E. Jeppesen;Wei Li
通讯作者:
N. Zhang;Hongjing Li;E. Jeppesen;Wei Li
影响因子:
2.6
作者:
Jeppesen, Erik;Sondergaard, Martin;Jensen, Jens Peder
通讯作者:
Jensen, Jens Peder
影响因子:
2.7
作者:
Piyanart Saunkaew;P. Wangpakapattanawong;A. Jampeetong
通讯作者:
Piyanart Saunkaew;P. Wangpakapattanawong;A. Jampeetong
影响因子:
2.7
作者:
Aggie O. Y. Li;D. Dudgeon
通讯作者:
Aggie O. Y. Li;D. Dudgeon