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The recovery of top predators is thought to have cascading effects on vegetated ecosystems and their geomorphology1,2, but the evidence for this remains correlational and intensely debated3,4. Here we combine observational and experimental data to reveal that recolonization of sea otters in a US estuary generates a trophic cascade that facilitates coastal wetland plant biomass and suppresses the erosion of marsh edges—a process that otherwise leads to the severe loss of habitats and ecosystem services5,6. Monitoring of the Elkhorn Slough estuary over several decades suggested top-down control in the system, because the erosion of salt marsh edges has generally slowed with increasing sea otter abundance, despite the consistently increasing physical stress in the system (that is, nutrient loading, sea-level rise and tidal scour7–9). Predator-exclusion experiments in five marsh creeks revealed that sea otters suppress the abundance of burrowing crabs, a top-d ....
ust 11 - Rockport, Canada - New Age Metals Inc. ; ; Technical Report on SEDAR for its 100%-owned River Valley Palladium Project, 60 km east-northeast of , . The results of the PEA were previously announced in a Company press release dated 29, 2023.. - Veroeffentlicht am 11.08.2023 ....
ADMA Biologics Announces Second Quarter 2023 Financial Results and Provides Business Update itbusinessnet.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from itbusinessnet.com Daily Mail and Mail on Sunday newspapers.