Land Use Practices and their Influence on Freshwater Ecosystem Dynamics and Sustainability

Abstract

One of the most significant pressures affecting aquatic biota and biogeochemical processes in river catchments and lake basins is disturbance to the land use. A systemic analysis of the impacts of extensive farming, urbanization, and high-intensity forestry production on freshwater biodiversity, nutrient transport, and ecological integrity is presented in this paper. By integrating twenty years of data from time series monitoring of multiple river catchments (2006-2026) the drivers of ecosystem function reduction due to nutrient inputs, fast run-off, habitat fragmentation, and species loss are analyzed empirically. Findings from the study show macroinvertebrate functional diversity decline to 54% and nutrient uptake capacity to a similar extent where high percentages of impervious surface are present alongside intensive farming (due to the flattening of structural habitat), this compromises the continued provisioning of numerous key ecosystem services such as the inherent natural biological filtration of water, flood mitigation, and local resource extraction. The potential to use remedial management practices such as continuous Riparian Buffer Zones (RBZs), integrated catchment management and green infrastructure techniques to reduce the scale and intensity of these impacts is explored. An emphasis on the long-term maintenance of ecosystem functions and processes requires a combination of spatial planning at a catchment scale alongside dynamic nutrient loading targets to be used as part of ecosystem rehabilitation; empirical analysis presented in this study provide a framework for effective policy-making for aquatic environmental science.