Department of Land and Water Resources Management, Faculty of Civil Engineering, Slovak University of Technology, Bratislava, Slovak Republic.
Slovak Water Management Enterprise, s.e, Bratislava, Slovak Republic.
Sci Rep. 2024 Nov 4;14(1):26697. doi: 10.1038/s41598-024-76787-y.
The article focuses on adapting generalized depth preference and flow velocity characteristics from Brown trout (Salmo trutta morpha fario) to the Minnow (Phoxinus phoxinus). The results obtained were used to model habitat suitability with 1D and 2D models. Since 1995, research on assessing aquatic habitat quality has been ongoing on 77 mountain streams in Slovakia. This assessment employs a System of Environmental Flow Analysis (SEFA), which is based on the Instream Flow Incremental Methodology (IFIM). In most sections, Brown trout occurred in representative numbers. Brown trout habitat preferences were derived and generalized, and represented by suitability curves. Minnows were present in sufficient numbers for the derivation of suitability curves only on some streams, making direct generalization from the measured data unrepresentative. The measurement results showed that Minnow has similar depth and flow rate preferences to Brown trout. Therefore, it can be assumed that it is possible to adapt the generalised suitability curves from Brown trout to Minnow. This expansion enabled us to broaden the assessment of habitat quality using the SEFA model to mountain streams that are dominated by Minnows and where there is insufficient Brown trout presence. Verification of parameter adaptation from Brown trout to Minnow was conducted in 11 sections of mountain streams. We discuss the performance of habitat quality modeling, concerning the fundamental hydraulic characteristics of streams, using both 1D and 2D models. The results of the 2D modeling are presented for a sub-mountain stream.
本文重点研究了将普通虹鳟鱼（Salmo trutta morpha fario）的水深偏好和流速特征应用于溪红点鲑（Phoxinus phoxinus）的方法。研究结果用于使用 1D 和 2D 模型对栖息地适宜性进行建模。自 1995 年以来，斯洛伐克一直在对 77 条山区溪流进行评估水生栖息地质量的研究。该评估采用基于流增量法（IFIM）的环境水流分析系统（SEFA）。在大多数河段，虹鳟鱼的数量都很可观。通过研究得出了虹鳟鱼的栖息地偏好，并通过适宜性曲线进行了概括。仅在一些溪流中，才发现足够数量的溪红点鲑来推导出适宜性曲线，因此直接从测量数据进行推广并不具有代表性。测量结果表明，溪红点鲑与虹鳟鱼具有相似的水深和流速偏好。因此，可以假设将虹鳟鱼的广义适宜性曲线应用于溪红点鲑是可行的。通过这种扩展，我们可以使用 SEFA 模型将栖息地质量评估扩展到以溪红点鲑为主、虹鳟鱼数量不足的山区溪流。在 11 个山区溪流段中对从虹鳟鱼到溪红点鲑的参数适应性进行了验证。我们讨论了使用 1D 和 2D 模型的溪流基本水力特性对栖息地质量建模性能的影响。还呈现了 2D 模型的子山区溪流的结果。
