Ochre pollution as an ecological problem in the aquatic environment - solution attempts from Denmark

Viac o knihe

In her paper, Hilke Prange addresses the often-overlooked issue of ochre pollution in aquatic environments, particularly in German watercourses. This problem arises from various factors, including the draining of agricultural fields, which disrupts the soil-water equilibrium and leads to significant flows of dissolved iron into waterways. As the iron precipitates through oxygenation, it clogs the interstitial spaces in gravel beds, adversely affecting developing salmonid eggs and fry. Additionally, this pollution disrupts aquatic plant life, altering species diversity and abundance. The flushing of drain pipes exacerbates the situation by releasing iron sludges, while maintenance practices further deteriorate aquatic habitats, resulting in extreme iron concentrations that harm both flora and fauna. Denmark's experience with improvement works, guided by a specific "Ochre Law," offers valuable insights. Collaborating with Danish experts, Prange presents a comprehensive overview that serves as a resource for professionals and researchers alike. This work is particularly relevant in light of the European Water Framework Directive, contributing significantly to the pursuit of achieving good ecological status and potential in watercourses.