|Titre||Anthropogenic, direct pressures on coastal wetlands|
|Auteur||Newton, A; Icely, J; Cristina, S; Perillo, G M E; 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 C; de Lima, R; Kuenzer, C|
|Source||Frontiers in Ecology and Evolution vol. 8, 144, 2020 p. 1-29, https://doi.org/10.3389/fevo.2020.00144 Accès ouvert|
|Séries alt.||Ressources naturelles Canada, Contribution externe 20200308|
|Éditeur||Frontiers Media S.A.|
|Document||publication en série|
|Media||papier; en ligne; numérique|
|Formats||pdf; pdf; html|
|Province||Territoires du Nord-Ouest; Yukon|
|Région||Fleuve Mackenzie; Mer de Beaufort; Chesapeake Bay; Mississippi Delta; Bahia Blanca; Ria Formosa; Malanza Coastal Lagoon; Venice; Bizerte Lagoon; Ichkeul Lake; Watamu; Vembanad Lake; Sundarbans Mangroves;
Yellow River (Huang He) Delta; Yangtze (Changjiang) Delta; Mekong Delta; Gulf of Papua|
|Lat/Long OENS||-180.0000 180.0000 86.0000 -86.0000|
|Sujets||milieu côtièr; terres humides; écosystèmes; écologie; effets sur l'environnement; exploitation minière; milieu hydrologique; changements du niveau de la mer; Pêcheries; Aquaculture; Tourisme;
Développement urbain; Expédition; Développement industriel; Services écosystémiques; effets cumulatifs; Changement climatique; géologie de l'environnement; hydrogéologie; Nature et environnement; Sciences et technologie; Économie et industrie;
Société et culture; Agriculture; combustibles fossiles|
|Illustrations||cartes de localisation; tableaux; représentations schématiques|
|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 et disponible en anglais seulement)|
This publication focuses on coastal wetlands, which are areas like salt marshes and mangroves found along the
coast. These wetlands provide essential services that help human communities and support the environment. The study covers wetlands in five continents, which vary in size, the number of people living nearby, and their level of economic
The researchers looked at how human activities and industries around these wetlands put pressure on them. These pressures include agriculture, aquaculture, tourism, urban development, shipping, and more. Activities like land
reclamation, water extraction, and pollution have consequences for these coastal ecosystems. The wetlands are affected by habitat loss, changes in water flow and sediment, contamination, and pollution.
These pressures harm the environment and
ecosystems, leading to problems like erosion and the loss of plant life. These changes affect the services these wetlands provide, which are often underestimated. These services include helping regulate climate change and supporting human well-being.
The study emphasizes that these wetlands face multiple challenges, and climate change, especially rising sea levels, makes the situation even more difficult.
The scientific impact of this publication is significant because it highlights the global
importance of protecting coastal wetlands and the urgent need to address these threats to ensure their survival and the services they provide.