The paper outlines the evolution of an Australian form of Open Marsh Water Management (OMWM) called runnelling which was implemented in relatively pristine saltmarshes. Runnelling involves shallow channels and was distinguished from OMWM which involves ditching. Both methods aim to conserve tidal hydrology. The core research covers 28 years of research on the original experimental site (Coomera Island, Queensland), in routine monitoring and impact assessments that were made periodically. It also introduces and incorporates information from associated research. This includes effects of runnelling on non-target aspects—snails and crabs. Emerging issues during the course of the longer-term research included the risk of mobilising acid sulfates and of mangrove encroachment into the saltmarsh. As well, use of the data was extended to retrofit it to address broader questions about saltmarsh processes and how to identify them. That identified progressive changes at the Coomera site, and so a further query was whether the system showed signs of approaching a tipping point. In summary, there were some identifiable effects of runnelling in all parts of the research. These were mostly related to the increased wetness near runnels, as flooding by tides would occur at tides up to 0.30 m lower than the pre-runnelling situation. The increased wetness was related to plants, snails and crabs. From a mosquito management perspective the method was successful. From an environmental perspective the environmental changes were only very close to runnels (within 10 m). The overall changes at the experimental site were consistent with other changes in eastern Australia, especially of mangrove encroachment into saltmarshes. Once the runnelling method appeared to manage mosquitoes without damaging wetland values it was adopted widely throughout south east Queensland, encouraged by the positive attitude of permitting agencies, but longer-term evaluation was hindered by lack of relevant records.

该文件概述了澳大利亚形式的开放式沼泽水管理（OMWM）的演变，这种形式在相对原始的盐沼中实施。梯级滑行涉及浅水通道，并且与涉及沟渠的OMWM有所不同。两种方法都旨在保护潮汐水文。核心研究涵盖了对原始实验站点（昆士兰州的Coomera岛）的28年研究，这些研究是定期进行的常规监测和影响评估。它还介绍并合并了来自相关研究的信息。这包括对非目标方面（蜗牛和螃蟹）的拖带效应。在长期研究过程中出现的新问题包括动员酸性硫酸盐和红树林侵蚀盐沼的风险。还有 扩展了数据的使用范围，以进行改进，以解决有关盐沼过程以及如何识别它们的更广泛的问题。这确定了Coomera站点的逐渐变化，因此进一步的疑问是系统是否显示出接近临界点的迹象。总而言之，在所有研究部分中，流鼻涕都有一些可识别的影响。这些主要与流道附近的湿度增加有关，因为潮汐泛滥将发生在潮汐流之前，比顺流前的情况低0.30 m。湿度增加与植物，蜗牛和螃蟹有关。从蚊子管理的角度来看，该方法是成功的。从环境角度看，环境变化仅非常接近水道（10 m以内）。实验地点的总体变化与澳大利亚东部的其他变化一致，特别是红树林侵蚀盐沼。一旦梯级管理方法似乎能够在不破坏湿地价值的情况下管理蚊子，在许可机构的积极态度的鼓励下，整个昆士兰东南部广泛采用了这种方法，但是由于缺乏相关记录，长期评估受到了阻碍。