Composition and temporal variation of the microphytobenthos communities of the Conero Riviera (northern Adriatic Sea) were investigated in the course of an annual cycle, focusing on their relationships with blooms of the benthic dinoflagellate Ostreopsis cf. ovata. Sampling was carried out from March 2009 to March 2010 on undisturbed benthic substrata (macroalgae and pebbles). Samples for the study of microphytobenthos were collected with a monthly frequency, while those for the study of Ostreopsis bloom weekly. Benthic diatoms dominated the microphytobenthos communities for most of the annual cycle (except the summer), both in terms of abundance and biomass. In summer, cyanobacteria were dominant (54.04±9.18 and 24.29±11.11% of total abundance and biomass, respectively), while benthic dinoflagellates were an important component of the community in terms of biomass only at the peak of the Ostreopsis bloom in late summer (up to 91% of the total biomass). Among diatoms, the most abundant forms throughout the year were motile species (77.5±3.71% of the population), while erect diatoms formed the majority of the biomass in winter and spring (48.66±16.66 and 48.05±5.56% of total population, respectively). Diatoms were mainly affected by DIN availability, while the patterns of biomass of O. cf. ovata and cyanobacteria were related to salinity and temperature. The biomass of Ostreopsis was also affected by the availability of phosphorus. The results of this study suggest that the proliferation of Ostreopsis affected the structure of the benthic diatom community: motile diatoms were significantly more abundant during the Ostreopsis bloom peak than during the rest of summer, probably because they benefited from the abundant mucilaginous mat covering the benthic substrata. In the course of the O. cf. ovata bloom the diversity of the microphytobenthos was significantly lower than during the rest of the year, suggesting an influence of both the shading produced by the mucous mat and allelopathic compounds possibly produced by O. cf. ovata.

译文

:在一年周期的过程中,研究了Conero Riviera(北亚得里亚海)的微藻底栖动物群落的组成和时间变化,重点是它们与底鞭毛鞭毛藻(Ostreopsis)底栖生物开花的关系。卵子。从2009年3月至2010年3月对未受干扰的底栖基质(巨藻和卵石)进行了采样。每月收集用于研究微小藻类底栖动物的样品,而每周一次采集用于研究骨质疏松症的样品。在丰富度和生物量方面,底栖硅藻在整个年度周期的大部分时间(夏季除外)都主导着微型底栖动物群落。夏季,蓝藻占主导地位(分别占总丰度和生物量的54.04±9.18和24.29±11.11%),而底栖鞭毛藻仅在夏末Ostreopsis开花高峰时的生物量方面是群落的重要组成部分(高达总生物量的91%)。在硅藻中,全年最丰富的形态是游动物种(占人口的77.5±3.71%),而直立的硅藻在冬季和春季占生物量的大部分(分别占总人口的48.66±16.66和48.05±5.56%)。 )。硅藻主要受DIN利用率的影响,而O.cf.的生物量模式。卵子和蓝细菌与盐度和温度有关。骨质疏松症的生物量也受到磷的有效性的影响。这项研究的结果表明,骨质增生症的增殖影响了底栖硅藻群落的结构:在动植物硅藻的盛花高峰期,活动硅藻比夏季其余时间明显丰富,这可能是因为它们受益于覆盖底栖生物的大量粘液性垫层。底层。在O的过程中。卵子花的微藻底栖动物的多样性明显低于该年的其余时间,这表明粘液垫产生的阴影和O.cf.可能产生的化感化合物的影响。卵子。

+1
+2
100研值 100研值 ¥99课程
检索文献一次
下载文献一次

去下载>

成功解锁2个技能,为你点赞

《SCI写作十大必备语法》
解决你的SCI语法难题!

技能熟练度+1

视频课《玩转文献检索》
让你成为检索达人!

恭喜完成新手挑战

手机微信扫一扫,添加好友领取

免费领《Endnote文献管理工具+教程》

微信扫码, 免费领取

手机登录

获取验证码
登录