Biotic and Abiotic Interactions in Freshwater Ecosystems and their Role in Ecosystem Functioning

Freshwater biomes such as lakes, wetlands, and rivers are important for reasons such as species richness, nutrient turnover, and regulation of water purity. Relationships among organisms in an ecosystem, including producers, consumers, and decomposers, as well as abiotic components such as temperature, hydrology, oxygen, and nutrient content, influence the nature of ecosystems. In this literature review, an analysis of current research on the interaction of biotic and abiotic factors and their impacts on ecosystems is conducted. Research articles were selected according to their relevance, inclusion of both biotic and abiotic factors, and evaluation of ecosystem functioning within fifteen years ago to date. It was found that changes in abiotic factors affected species and trophic relationships in the community, and in turn, interactions between organisms regulated ecosystem-level processes. It was concluded that nutrient loading, variability in flow, and temperature were important abiotic regulators, and high functional diversity and complexity of food webs contributed to greater ecosystem stability and resilience. The integration of these observations underscores the relevance of taking into account the role of bottom-up and top-down processes in the management of freshwater ecosystems. Some of the implications of these observations for the conservation and management of freshwater ecosystems include the maintenance of the natural hydrology of the systems, the preservation of water quality, the maintenance of ecological heterogeneity, and the restoration of ecological functions.