Long‐term dynamics of a freshwater sponge population
Long‐term dynamics of a freshwater sponge population
复制标题
淡水海绵种群的长期动态
DOI：
10.1111/j.1365-2427.1995.tb00408.x
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发表时间：
1995
影响因子：
2.7
通讯作者：
R. Manconi
中科院分区：
文献类型：
--
作者：
R. Pronzato;R. Manconi
摘要
1.于1987-1993年在撒丁岛采集了海绵EPhydutia flvtatilis种群的定量野外资料，以研究其生活方式。
2.海绵生长在年周期内较高，6年内变化不大。Gemulation是非常快速和高效的。许多标本的寿命长达5年。
3.在我们的研究期间，种群被一次洪水摧毁。生殖器在底物上的持久性表明，在我们的研究种群中，分散程度很低。洪水发生7个月后，重新殖民开始，重新建立了一个新的种群，在空间结构和标本大小方面与以前的种群不同。
SUMMARY
1. Quantitative field data were collected from a Sardinian population of the sponge Ephydutia fluvtatilis from 1987 to 1993 in order to study its life style.
2. Growth of sponges was high during the annual cycle, and showed few changes in 6 years. Gemmulation was very rapid and highly efficient. Life spans of many specimens extended up to 5 years.
3. The population was destroyed by one flood during our study period. The persistence of gemmules on substrata suggested that dispersal was low in our study population. Recolonization started 7 months after the flood and re-established a new population, different from the previous one in terms of spatial structure and specimen size.