Fisheries Scientist Jim Lyons from the UK’s Environment Agency has been in action over the last few months introducing Yorkshire Fisheries Officers to the benefits of the BioBase system. Following two days of survey work on a couple of gravel pit fisheries in the area the team received a report less than a week later. Mike Lee from the local team and the angling clubs who manage the waters, were very impressed with the technique and the report generated. They have come away with a host of ideas about how to further use Lowrance Fish Finders and the Biobase System across their catchment in both river and Stillwater fisheries.
Further Mr. Lyons, recently presented to aquatic plant specialists from the Environment Agency, Natural England and Natural Resources Wales at Preston Montford Field Studies centre as part of the relaunch of the aquatic plant specialist’s network.
Area specialist are responsible for the technical lead for aquatic plant survey delivery within their Area, ensuring that all aquatic plant surveyors are suitably trained and have the relevant support to deliver their surveys. The specialists also play a key role in underpinning the delivery of the quality assurance programme.
Mr. Lyons talked about ‘Using acoustics and cloud-based technology to monitor aquatic weed.’He shared with the group the benefits of using BioBase to inform weed management programmes. Enthusiastic feedback from the group has provided a number of potential new applications for this technology from across the Department of Environment, Food, and Rural Affairs (DEFRA) family organisations present.
River channel thalwegs (the line of lowest elevation within a valley or watercourse) are often dynamic, and sometimes hidden features of large river systems. Especially low slope or impounded systems. The thalweg is a critical geomorphological feature of river and reservoir systems and affects everything from sediment transport, to fisheries habitat, to algae or invasive plant control.
Thus a good bathymetric contour map is a necessary pre-requisite for effective river and reservoir management. Here, we walk you through how to use new real time technologies (C-MAP’s Genesis Live) to produce smooth, precise, and accurate maps of hidden river thalwegs all within one trip to the site and with automated post-processing with BioBase’s EcoSound. We’ll use an annotated image gallery to take you through this process.
BioBase’s EcoSound bottom composition (hardness) algorithm has become quite popular for researchers and lake/pond managers to determine where sedimentation from the watershed may be occurring. However, interpreting sonar returns in shallow environments (e.g., less than 7 ft or 2 m) with off-the-shelf sonar is challenging, especially if aquatic vegetation is present. Each situation is different and the objective of this blog is to inform you of how to interpret your EcoSound map in situations when you encounter counter intuitive bottom hardness results.
Thanks to advances in physical, chemical and biological technologies and funding that are focused on reducing sedimentation or muck depth in waterways, many water resource practitioners are eager to determine how much sediment is in a waterway of interest and how much could be removed. As such, we frequently are asked: “Will BioBase tell you how deep the sediment is?”