Comparative biogeochemistry-ecosystem-human interactions on dynamic continental margins - Université de Bretagne Occidentale Access content directly
Journal Articles Journal of Marine Systems Year : 2015

Comparative biogeochemistry-ecosystem-human interactions on dynamic continental margins

James E. Cloern
  • Function : Author
  • PersonId : 866360
P. Wassman
  • Function : Author


The oceans' continental margins face strong and rapid change, forced by a combination of direct human activity, anthropogenic CO2-induced climate change, and natural variability. Stimulated by discussions in Goa, India at the IMBER IMBIZO III, we (1) provide an overview of the drivers of biogeochemical variation and change on margins, (2) compare temporal trends in hydrographic and biogeochemical data across different margins, (3) review ecosystem responses to these changes, (4) highlight the importance of margin time series for detecting and attributing change and (5) examine societal responses to changing margin biogeochemistry and ecosystems. We synthesize information over a wide range of margin settings in order to identify the commonalities and distinctions among continental margin ecosystems. Key drivers of biogeochemical variation include long-term climate cycles, CO2-induced warming, acidification, and deoxygenation, as well as sea level rise, eutrophication, hydrologic and water cycle alteration, changing land use, fishing, and species invasion. Ecosystem responses are complex and impact major margin services. These include primary production, fisheries production, nutrient cycling, shoreline protection, chemical buffering, and biodiversity. Despite regional differences, the societal consequences of these changes are unarguably large and mandate coherent actions to reduce, mitigate and adapt to multiple stressors on continental margins.
Fichier principal
Vignette du fichier
fulltext.pdf (1.47 Mo) Télécharger le fichier
Origin Publisher files allowed on an open archive

Dates and versions

hal-01023100 , version 1 (29-06-2020)



L. A. Levin, K. K. Liu, K.C. Emeis, D.L. Breitburg, James E. Cloern, et al.. Comparative biogeochemistry-ecosystem-human interactions on dynamic continental margins. Journal of Marine Systems, 2015, 141, pp.3-17. ⟨10.1016/j.jmarsys.2014.04.016⟩. ⟨hal-01023100⟩
375 View
75 Download



Gmail Mastodon Facebook X LinkedIn More