...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Estuarine Coastal and Shelf Science >Local distribution patterns of macroalgae in relation to environmental variables in the northern Baltic Proper
【24h】

Local distribution patterns of macroalgae in relation to environmental variables in the northern Baltic Proper

机译：波罗的海北部地区大型藻类的局部分布格局与环境变量的关系

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The relationship between macroalgal assemblages and abiotic factors was quantified by gradient analyses in an area where long-term changes in macroalgal depth distributions have previously been documented. Biomass data from 4, 6, 8 and 10 m depth in an area of similar salinity (5) and substrate (rock) in the northern Baltic Proper was constrained by a set of environmental variables defining different aspects of abiotic control of species distributions (sediment cover, effective fetch, clarity index, the curvature and slope of the bottom, and direction of exposure) in multivariate analyses at different scales. Fucus vesiculosus dominated the biomass at 4, 6 and 8 m depth, and Furcellaria lumbricalis at 10 m. The applied models explained 30.7-53.3% of the total variance in community structure, and 49.3-60.9% when analysed separately for each depth. A separate analysis of species depth distributions demonstrated that effective fetch was most strongly related to upper limits of the algal belts, sediment cover to the lower limit and density of the F. vesiculosus belt, and clarity index to the lower limits of F. vesiculosus, perennial red algae, and of the red algal and Sphacelaria spp. belts. The results show a strong correlation between environmental variables and vegetation structure even on a small, local scale in the northern Baltic Proper, indicating a high suitability of the phytobenthic zone for environmental monitoring. The results add to previous studies that show a strong importance of abiotic factors on large-scale variation in phytobentic community composition in the Baltic Sea.
机译：在以前已经记录了大型藻类深度分布的长期变化的区域中，通过梯度分析定量了大型藻类组合和非生物因子之间的关系。在波罗的海北部适当盐度（5）和底物（岩石）区域，深度为4、6、8和10 m的生物量数据受到一组环境变量的限制，这些变量定义了非生物控制物种分布的各种方面（沉积覆盖率，有效抓取率，清晰度指数，底部的曲率和斜率以及曝光方向）以不同比例进行多变量分析。在4、6和8 m深度，水榕主要以生物量为主，而在10 m处以褐毛海藻为主。应用的模型解释了群落结构总变异的30.7-53.3％，而对于每个深度分别进行分析则为49.3-60.9％。对物种深度分布的另一项分析表明，有效获取与藻类带的上限，沙丘覆盖度与维氏藻带的下限和密度以及透明度指数与维氏藻的下限最密切相关，多年生的红藻，以及红藻和球藻属。皮带。结果表明，即使在波罗的海北部的局部地区，环境变量与植被结构之间也具有很强的相关性，这表明植物底栖动物区带非常适合环境监测。该结果增加了以前的研究，这些研究表明非生物因素对波罗的海植物性苯甲虫群落组成的大规模变化具有重要意义。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号