![]() Pardo hopes for more research and better monitoring to manage the challenges going forward. The study shows that organic material from land plays an important role in the coastal area, but knowledge in the field is still somewhat limited. This is closely related to climate change which, among other things, results in more drainage from land and runoff to the sea. Pardo highlights how Norway is experiencing darker waters along the coast. "Heavy rainfall and landslides affect the interaction between land and sea," he says. Drainage from land, in addition to floods, landslides and storms, threatens coastal ecosystems. But normal weather is constantly being challenged by extreme weather due to climate change, which can have negative consequences. The study shows that runoff from land is an important resource for the sea in normal weather conditions. Credit: University of AgderĬlimate change threatens coastal ecosystems Juan Pardo is a research fellow in the Faculty of Engineering and Science at UiA. student in the Center for Coastal Research (CCR) at UiA. Now we see that it can also be an important resource," says Juan Pardo, Ph.D. "In the past, we've heard that runoff and drainage from land is bad for the ocean. Not everything that flows into the sea is waste. Thus, ter-OM influences macrobenthic communities in several forms by being a source of nutrients, refuge, physical stressor smoothing epibenthic groups, and also as an important component of benthic–pelagic dynamics, acting as an energy transfer among trophic levels. When sedimented, the material can follow three paths: (1) remineralized into dissolved inorganic carbon and nutrients, and remixed with the water, (2) stored in the benthic biomass, or (3) buried in the deeper sediments. Following the aquatic continuum, a substantial amount of ter-OM reaches the coastal and shelf benthic compartments. The material from land has both natural and anthropogenic, or mixed origins. Conceptual representation of the land–ocean environmental interface and potential sources of terrestrial organic matter (ter-OM). ![]()
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