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首页> 外文期刊>Brazilian Journal of Biology >A new method to quantify macroalgae and a practical sampler for experimentation in lotic habitats
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A new method to quantify macroalgae and a practical sampler for experimentation in lotic habitats

机译：一种用于量化大型藻类的新方法和一种实用的采样器，用于在抽水栖息地进行实验

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摘要

Experimental studies in rivers and streams are extremely difficult to run due to the fact that the conditions of these environments are very complex and provide a high level of heterogeneity, which hinders the precise control and standardization of variables. In this study, we present a practical sampler that was designed to make it easier to conduct research projects involving benthic communities of lotic environments, as well as a new nondestructive technique for quantification of the macroalgal communities typically found in these habitats. The sampler consists of an acrylic square tube in which water flows normally inside. This structure carries a removable glass plaque with a known area and can simulate various ecological situations by changing both biotic and abiotic conditions. Thus, it can mitigate the differences between environmental characteristics where each sampler is exposed. The new technique involves capturing digital images that can monitor a unique macroalgal community in development throughout time and a more precise quantification when compared with other techniques that are widely applied. The sampler is easy to build and the images simple to quantify, allowing the detection of spatial and temporal variations in richness and abundance of investigated communities.
机译：由于这些环境的条件非常复杂并且提供了高度的异质性，因此在河流和溪流中进行实验研究非常困难，这阻碍了变量的精确控制和标准化。在这项研究中，我们提供了一个实用的采样器，旨在使进行抽水环境的底栖生物群落的研究项目更加容易，以及一种用于定量分析通常在这些栖息地中发现的大型藻类群落的新的非破坏性技术。采样器由丙烯酸方管组成，水通常在其中流动。这种结构带有可移动的玻璃板，具有已知的面积，并且可以通过改变生物和非生物条件来模拟各种生态状况。因此，它可以减轻每个采样器暴露在其中的环境特性之间的差异。这项新技术涉及捕获数字图像，与广泛应用的其他技术相比，该数字图像可以在整个时间内监视发育过程中独特的大型藻类群落，并且可以进行更精确的量化。采样器易于构建，图像易于量化，可以检测所调查社区的丰富度和时空变化。

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