| Titre | Anthropogenic, direct pressures on coastal wetlands |
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| Auteur | Newton, A; Icely, J; Cristina, S; Perillo, G; Turner, R E; Ashan, D; Cragg, S; Luo, Y; Tu, C; Li, Y; Zhang, H; Ramesh, R; Forbes, D L ; Solidoro, C; Béjaoui, B; Gao, S; Pastres, R; Kelsey, H; Taillie, D; Nhan, N; Brito, A; de Lima, R; Kuenzer, C |
| Source | Frontiers in Ecology and Evolution 2020 p. 1-29, https://doi.org/10.3389/fevo.2020.00144  Accès ouvert |
| Image |  |
| Année | 2020 |
| Séries alt. | Ressources naturelles Canada, Contribution externe 20200070 |
| Éditeur | Frontiers Media SA |
| Document | publication en série |
| Lang. | anglais |
| DOI | https://doi.org/10.3389/fevo.2020.00144 |
| Media | papier; en ligne; numérique |
| Formats | pdf |
| Lat/Long OENS | -180.0000 180.0000 90.0000 -90.0000 |
| Sujets | milieu côtièr; terres humides; marais salés; milieu hydrologique; pollution; estuaires; wadden; Habitat; Écosystème; Nature et environnement; Personnes; géologie de l'environnement; géologie économique;
Économie et industrie; sédimentologie |
| Illustrations | cartes de localisation; tableaux; diagrammes |
| Programme | Géosciences de changements climatiques |
| Diffusé | 2020 07 07 |
| Résumé | (disponible en anglais seulement)
Coastal wetlands, such as saltmarshes and mangroves that fringe transitional waters, deliver important ecosystem services that support human development.
Coastal wetlands are complex social-ecological systems that occur at all latitudes, from polar regions to the tropics. This overview covers wetlands in five continents. The wetlands are of varying size, catchment size, human population and stages of
economic development. Economic sectors and activities in and around the coastal wetlands and their catchments exert multiple, direct pressures. These pressures affect the state of the wetland environment, ecology and valuable ecosystem services. All
the coastal wetlands were found to be affected in some ways, irrespective of the conservation status. The main economic sectors were agriculture, animal rearing including aquaculture, fisheries, tourism, urbanization, shipping, industrial development
and mining. Specific human activities include land reclamation, damming, draining and water extraction, construction of ponds for aquaculture and salt extraction, construction of ports and marinas, dredging, discharge of effluents from urban and
industrial areas and logging, in the case of mangroves, subsistence hunting and oil and gas extraction. The main pressures were loss of wetland habitat, changes in connectivity affecting hydrology and sedimentology, as well as contamination and
pollution. These pressures lead to changes in environmental state, such as erosion, subsidence and hypoxia that threaten the sustainability of the wetlands. There are also changes in the state of the ecology, such as loss of saltmarsh plants and
seagrasses, and mangrove trees, in tropical wetlands. Changes in the structure and function of the wetland ecosystems affect ecosystem services that are often underestimated. The loss of ecosystem services impacts human welfare as well as the
regulation of climate change by coastal wetlands. These cumulative impacts and multi-stressors are further aggravated by indirect pressures, such as sea-level rise. |
| Sommaire | (Résumé en langage clair et simple, non publié)
Les zones humides côtières telles que les marais salants et les mangroves fournissent des ressources importantes et d'autres contributions
(connues sous le nom de services écosystémiques) pour le développement humain, les économies et la sécurité. On les trouve sous presque toutes les latitudes, des régions polaires aux tropiques. Les activités économiques humaines exercent de fortes
pressions sur les zones humides côtières. Ces pressions, qui peuvent avoir un effet négatif sur l'environnement, l'écologie et les services écosystémiques des zones humides, comprennent la perte d'habitat, les changements dans la circulation de l'eau
et des sédiments, et la pollution. Ces changements peuvent menacer la durabilité des zones humides, entraînant la perte de services écosystémiques. La perte de ces services aura un impact sur le bien-être humain, ainsi que sur la régulation du
changement climatique par les zones humides côtières. Ces effets cumulatifs sur les zones humides seront probablement aggravés par le changement climatique. |
| GEOSCAN ID | 326139 |
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