Challenges and perspectives for the Brazilian semi-arid coast under global environmental changes
نویسندگان
چکیده
• Changes in the Brazilian semi-arid coast reveal key questions to advance research. can have consequences ecological stability and connectivity. Modifications of coastal dynamics impact structure function adjacent marine ecosystems. Semi-arid community under ongoing climate change should be monitored. Beaches nearshore mangroves erosion contrast with mangrove expansion inland. Understanding impacts on coast, which is a drought-prone area (>1000 km) tropical Atlantic, how ecosystems survive adapt such extreme environments requires socioecological studies create theory for conservation. Here, we highlight five main changes areas, namely (1) decrease rainfall rates due change, alters freshwater flows, water residence times, promotes hypersalinity (>37) low-inflow estuaries; (2) sea-level rise, groundwater hazards, increased beaches mangroves, landward forest enhanced saline intrusion along river basins; (3) land-ocean fluxes silting closure sandy bars estuarine mouths; (4) warming intensity frequency events (e.g., heat waves, droughts, sea swells); (5) growing eutrophication hypoxia, loss vegetation cover biodiversity urbanization, aquaculture (shrimp farming), agriculture, land-use includes building dams supply. The alteration biogeochemical processes (“Arctic Paradox” hypothesis) acidification that potentialize contaminants nutrients also highlighted. These effects food security multiple trophic levels, preferentially studied through long-term approach advancing Based these concerns, propose guide research context Decade Ocean Science Sustainable Development (2021–2030) support science-based management actions Brazil other similar areas worldwide.
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ژورنال
عنوان ژورنال: Perspectives in Ecology and Conservation
سال: 2021
ISSN: ['2530-0644']
DOI: https://doi.org/10.1016/j.pecon.2021.06.001