Dataset Information

Hydro-climatic changes of wetlandscapes across the world.

ABSTRACT: Assessments of ecosystem service and function losses of wetlandscapes (i.e., wetlands and their hydrological catchments) suffer from knowledge gaps regarding impacts of ongoing hydro-climatic change. This study investigates hydro-climatic changes during 1976-2015 in 25 wetlandscapes distributed across the world's tropical, arid, temperate and cold climate zones. Results show that the wetlandscapes were subject to precipitation (P) and temperature (T) changes consistent with mean changes over the world's land area. However, arid and cold wetlandscapes experienced higher T increases than their respective climate zone. Also, average P decreased in arid and cold wetlandscapes, contrarily to P of arid and cold climate zones, suggesting that these wetlandscapes are located in regions of elevated climate pressures. For most wetlandscapes with available runoff (R) data, the decreases were larger in R than in P, which was attributed to aggravation of climate change impacts by enhanced evapotranspiration losses, e.g. caused by land-use changes.

SUBMITTER: Ahlen I

PROVIDER: S-EPMC7854620 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature

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Hydro-climatic changes of wetlandscapes across the world.

Åhlén I I Vigouroux G G Destouni G G Pietroń J J Ghajarnia N N Anaya J J Blanco J J Borja S S Chalov S S Chun K P KP Clerici N N Desormeaux A A Girard P P Gorelits O O Hansen A A Jaramillo F F Kalantari Z Z Labbaci A A Licero-Villanueva L L Livsey J J Maneas G G Pisarello K L McCurley KLM Pahani D Moshir DM Palomino-Ángel S S Price R R Ricaurte-Villota C C Fernanda Ricaurte L L Rivera-Monroy V H VH Rodriguez A A Rodriguez E E Salgado J J Sannel B B Seifollahi-Aghmiuni S S Simard M M Sjöberg Y Y Terskii P P Thorslund J J Zamora D A DA Jarsjö J J

Scientific reports 20210202 1

Assessments of ecosystem service and function losses of wetlandscapes (i.e., wetlands and their hydrological catchments) suffer from knowledge gaps regarding impacts of ongoing hydro-climatic change. This study investigates hydro-climatic changes during 1976-2015 in 25 wetlandscapes distributed across the world's tropical, arid, temperate and cold climate zones. Results show that the wetlandscapes were subject to precipitation (P) and temperature (T) changes consistent with mean changes over the ...[more]

PMID: 33531523

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Project description:Human activities have changed hydroclimatic components worldwide, affecting agricultural productivity and water resources management. This research examined the spatial and temporal variability of hydroclimatic variables in the Upper Omo Gibe Basin. Modified Mann-Kendall, Sen's slope, and Innovative Trend Analysis methods were used to study the trends. The maximum statistically significant increasing trend of rainfall (P < 0.05) was observed at Limugenet station (Z = 3.641, S = 16.484), and a decreasing trend of rainfall was observed in Dedo station (Z = -2.732, S = -31.099). A generally decreasing rainfall trend was observed in the Upper Omo Gibe Basin. Temperature showed an upward trend in seasonal and annual observation. In spring, summer, autumn, and winter seasons the maximum significantly increasing trend (P < 0.05) of maximum temperature was 0.25 oC/year, 0.15 oC/year, 0.043 oC/year, and 0.082 oC/year respectively whereas the annual maximum significantly increasing trend was 0.083 oC/year. A significant increase in streamflow (P < 0.05) was observed at the Gibe gauging station (Z = 2.02) and Gilgel Gibe at Assendabo station (Z = 2.02) in the summer season. A significant decrease trend of streamflow has been observed in the Bulbul gauging station in the spring season (Z = -2.20), Megecha gauging station in the summer season (Z = -2.19), and annual (Z = -2.34). A statistically significant increasing and decreasing trend observed was 22 (27.5 %), 43 (53.75 %), 39 (48.75 %), and 5 (10 %) for rainfall, maximum temperature, minimum temperature, and streamflow respectively with the MMK test. Using the ITA method, 30 (37.5 %), 47 (58.75 %), 44 (55 %), and 34 (68 %) for rainfall, maximum temperature, minimum temperature, and streamflow were obtained respectively. This indicates that the ITA method displays stronger significant trends than the MMK method. The results benefit water resource management, drought mitigation, and sustainable agricultural planning in the basin.

Dataset Information

Hydro-climatic changes of wetlandscapes across the world.

Publications

Hydro-climatic changes of wetlandscapes across the world.

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