Canopy development influences early successional stream ecosystem function but not biotic assemblages
Canopy development influences early successional stream ecosystem function but not biotic assemblages
复制标题
冠层发育影响早期演替河流生态系统功能，但不影响生物组合
DOI：
10.1007/s00027-023-00972-w
复制
发表时间：
2023
期刊：
影响因子：
2.4
通讯作者：
Stancheva, Rosalina
中科院分区：
文献类型：
--
作者：
LeRoy, Carri J.;Claeson, Shannon M.;Garthwaite, Iris J.;Thompson, Madeline A.;Thompson, Lauren J.;Kamakawiwo’ole, Brandy K.;Froedin-Morgensen, Angie M.;McConathy, Victoria;Ramstack Hobbs, Joy M.;Stancheva, Rosalina
确定溪流如何自然发育，特别是新开发的河岸林冠覆盖的生态作用，对于了解构成新溪流群落的因素至关重要，并为恢复高度干扰的生态系统提供有价值的信息。然而，试图了解河流生态系统的初级演替受到了阻碍，缺乏数据，由于新的河流的景观很少形成。在本研究中，我们使用了五个流形成的1980年爆发的圣海伦斯山（WA，美国）研究的影响，冠层覆盖发展藻类和底栖大型无脊椎动物组合，生物量和有机质处理。新建立的封闭的树冠到达可用光较少，但没有显着差异，藻类生物量或大型底栖动物组合相比，开放的树冠到达。相反，藻类和大型无脊椎动物群落的结构主要是由流域之间的水文差异。与此相反，有机物的处理速率是敏感的冠层覆盖的发展，速度更快，在封闭的冠层，特别是在夏末或陆地预处理后。经过40年的河流和河岸带初级演替发展，植被覆盖强烈影响生态系统功能，但水生生物聚集更多地受到生理化学和水文变化的影响。我们的研究结果提供了洞察流组合和生态系统功能的发展，这也是相关的努力，以解决重大干扰流通道，如火山爆发，洪水，森林火灾，和皆伐伐木。
Determining how streams develop naturally, particularly the ecological role of newly developed riparian canopy cover, is essential to understanding the factors that structure new stream communities and provides valuable information for restoring highly disturbed ecosystems. However, attempts to understand primary succession in riverine ecosystems have been hindered by a lack of data owing to the infrequent formation of new rivers on the landscape. In the present study, we used five streams formed following the 1980 eruption of Mount St. Helens (WA, USA) to examine the influence of canopy cover development on algal and benthic macroinvertebrate assemblages, biomass, and organic matter processing. Newly established closed canopy reaches had less available light, but no significant differences in algal biomass or macroinvertebrate assemblages compared to open canopy reaches. Instead, algal and macroinvertebrate communities were structured mainly by hydrologic differences among watersheds. In contrast, organic matter processing rates were sensitive to canopy cover development, and rates were faster under closed canopies, especially in late summer or after terrestrial preconditioning. After 40 years of stream and riparian primary successional development, canopy cover strongly influences ecosystem function, but aquatic organism assembly was more influenced by physio-chemical and hydrologic variation. Our findings provide insight into the development of in-stream assemblages and ecosystem functions, which is also relevant to efforts to address major disturbances to stream channels, such as volcanic eruptions, floods, forest fires, and clear-cut logging.
登录
查看更多内容
北加州沿海溪流的附生植物对无脊椎动物放牧和河岸冠层的反应
DOI：
--
发表时间：
1989
期刊：
影响因子：
--
作者：
J. Feminella;M. Power;V. Resh
通讯作者：
V. Resh
影响因子：
5.9
作者：
Datry, T.;Larned, S. T.;Santos, A. N.
通讯作者：
Santos, A. N.
重新发现、重新评估和恢复消失的河流湿地走廊
DOI：
10.3389/feart.2021.653623
发表时间：
2021
期刊：
IAHS-AISH publication
影响因子：
--
作者：
E. Wohl;J. Castro;B. Cluer;D. Merritts;Paul D. Powers;B. Staab;C. Thorne
通讯作者：
C. Thorne
阿拉斯加冰川湾国家公园河岸植被对最近形成的溪流中无脊椎动物群落的影响
影响因子：
--
作者：
E. A. Flory;A. Milner
通讯作者：
A. Milner
圣海伦斯火山的物理事件、环境和地质生态相互作用：1980 年 3 月至 2004 年
DOI：
--
发表时间：
2005
期刊：
影响因子：
--
作者：
F. Swanson;J. Major
通讯作者：
J. Major