Monitoring submersed vegetation in a mesotrophic lake:: correlation of two spatio-temporal scales of change
Monitoring submersed vegetation in a mesotrophic lake:: correlation of two spatio-temporal scales of change
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DOI：
10.1016/j.aquabot.2003.11.006
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发表时间：
2004-05-01
期刊：
影响因子：
1.8
通讯作者：
Stephens, MD
中科院分区：
文献类型：
--
作者：
Titus, JE;Grisé, D;Stephens, MD
对美国纽约Chenango湖的沉水植被进行了两种时空尺度的监测：1978 - 1993年和2001年分别对200 m（2）网格进行了调查（12，800个样方），以及1.8公顷的沿岸的区域，每6-10年采样一次（1978年、1984年、1991年和2001年; 3600个样方）。网格植被的波动，而不规则的前11年，每个优势种表现出不同的变化模式。频率值为轮藻是最动态的，而苦草是最稳定的。1989年后，网格植被减少，到2001年，原来的11种中只有4种存在（包括原来的优势种），观察总数下降到
The submersed vegetation of mesotrophic, alkaline Chenango Lake in New York, USA, was monitored at two spatio-ternporal scales: a 200m(2) rid censused annually from 1978 to 1993 and again in 2001 (12,800 quadrats), and a 1.8 ha littoral zone sampled every 6-10 years (1978, 1984, 1991, and 2001; 3600 quadrats). The grid vegetation fluctuated rather erratically for the first 11 years with each of the dominant species showing a different pattern of change. Frequency values for Chara vulgaris were the most dynamic, while those for Vallisneria anzericana were the most stable. After 1989, grid vegetation declined, so that by 2001, Only four of the original 11 species were present (including the original dominants), and the total number of observations declined to