Abstract Human interventions have had unintended consequences for the diverse functions of various ecosystems. Hydrological potential to alter vegetated habitats in coastal nearshore ecosystems, but little is known about impacts on organic carbon (C org ) sequestration, which plays an important role climate change mitigation. We examined effects past human through artificial inlet opening a lag...

Benthic primary producers in marine ecosystems may significantly alter biogeochemical cycling and microbial processes in their surrounding environment. To examine these interactions, we studied dissolved organic matter release by dominant benthic taxa and subsequent microbial remineralization in the lagoonal reefs of Moorea, French Polynesia. Rates of photosynthesis, respiration, and dissolved ...

Existing knowledge of the tracks left by sauropod dinosaurs (loosely 'brontosaurs') is essentially two-dimensional, derived mainly from footprints exposed on bedding planes, but examples in the Broome Sandstone (Early Cretaceous) of Western Australia provide a complementary three-dimensional picture showing the extent to which walking sauropods could deform the ground beneath their feet. The pa...

Tsunamis and hurricanes are two earth surface processes that can dramatically impact coastal landforms ecosystems. This study uses a combination of palynological, grain-size, X-ray fluorescence, loss-on-ignition analyses, short-lived isotopic radiocarbon dating, statistical analysis to differentiate the tsunami hurricane deposits, establish Late-Holocene record extreme events, document landscap...

Studies have revealed the potential risks to which human health and ecosystems are exposed in the Venice Lagoon, due to the atmospheric deposition of persistent pollutants such as trace metals and organic compounds. A total of seventy-seven atmospheric bulk deposition samples were collected monthly from April 2002 to December 2004, from three sites located in the cities of Mestre and Venice, an...

Two distinct fishing technologies were identified among the shellmound builders of the Saquarema Lagoonal Complex, in the Brazilian state of Rio de Janeiro: bone point technology and worked fish spines. These technologies were related to the acquisition of specific fish resources; Worked fish spines were used in the capture of Micropogonias furnieri (Desmarest), and bone points used for fishing...