Riparian vegetation responses to altered flow regimes driven by climate change in Mediterranean rivers

Ecohydrology ◽  
2012 ◽  
Vol 6 (3) ◽  
pp. 413-424 ◽  
Author(s):  
Rui Rivaes ◽  
Patricia M. Rodríguez-González ◽  
António Albuquerque ◽  
António N. Pinheiro ◽  
Gregory Egger ◽  
...  
2018 ◽  
Vol 43 (9) ◽  
pp. 1825-1835 ◽  
Author(s):  
Vanesa Martínez-Fernández ◽  
Mijke Van Oorschot ◽  
Jaco De Smit ◽  
Marta González del Tánago ◽  
Anthonie D. Buijse

2021 ◽  
Vol 166 (3-4) ◽  
Author(s):  
Carlos Eduardo Aguiar de Souza Costa ◽  
Claudio José Cavalcante Blanco ◽  
José Francisco de Oliveira-Júnior

2013 ◽  
Vol 17 (1) ◽  
pp. 325-339 ◽  
Author(s):  
C. Schneider ◽  
C. L. R. Laizé ◽  
M. C. Acreman ◽  
M. Flörke

Abstract. Worldwide, flow regimes are being modified by various anthropogenic impacts and climate change induces an additional risk. Rising temperatures, declining snow cover and changing precipitation patterns will interact differently at different locations. Consequently, in distinct climate zones, unequal consequences can be expected in matters of water stress, flood risk, water quality, and food security. In particular, river ecosystems and their vital ecosystem services will be compromised as their species richness and composition have evolved over long time under natural flow conditions. This study aims at evaluating the exclusive impacts of climate change on river flow regimes in Europe. Various flow characteristics are taken into consideration and diverse dynamics are identified for each distinct climate zone in Europe. In order to simulate present-day natural flow regimes and future flow regimes under climate change, the global hydrology model WaterGAP3 is applied. All calculations for current and future conditions (2050s) are carried out on a 5' × 5' European grid. To address uncertainty, bias-corrected climate forcing data of three different global climate models are used to drive WaterGAP3. Finally, the hydrological alterations of different flow characteristics are quantified by the Indicators of Hydrological Alteration approach. Results of our analysis indicate that on the European scale, climate change can be expected to modify flow regimes remarkably. This is especially the case in the Mediterranean (due to drier conditions with reduced precipitation across the year) and in the boreal climate zone (due to reduced snowmelt, increased precipitation, and strong temperature rises). In the temperate climate zone, impacts increase from oceanic to continental. Regarding single flow characteristics, strongest impacts on timing were found for the boreal climate zone. This applies for both high and low flows. Flow magnitudes, in turn, will be predominantly altered in the Mediterranean but also in the Northern climates. At the end of this study, typical future flow regimes under climate change are illustrated for each climate zone.


2017 ◽  
Vol 23 (8) ◽  
pp. 3052-3063 ◽  
Author(s):  
Annemarie G. Garssen ◽  
Annette Baattrup-Pedersen ◽  
Tenna Riis ◽  
Bart M. Raven ◽  
Carl Christian Hoffman ◽  
...  

2020 ◽  
Vol 12 (9) ◽  
pp. 1362 ◽  
Author(s):  
Christine M. Albano ◽  
Kenneth C. McGwire ◽  
Mark B. Hausner ◽  
Daniel J. McEvoy ◽  
Charles G. Morton ◽  
...  

Dryland riparian areas are under increasing stress due to expanding human water demands and a warming climate. Quantifying responses of dryland riparian vegetation to these pressures is complicated by high climatic variability, which can create strong, transient changes in vegetation vigor that could mask other disturbance events. In this study, we utilize a 34-year archive of Landsat satellite data to (1) quantify the strength and timescales of vegetation responses to interannual variability in drought status and (2) isolate and remove this influence to assess resultant trends in vegetation vigor for riparian areas across the state of Nevada, the driest state in the USA. Correlations between annual late-summer Normalized Difference Vegetation Index (NDVI) and the Standardized Precipitation–Evapotranspiration Index (SPEI) were calculated across a range of time periods (varying timing and durations) for all riparian pixels within each of the 45 ecoregions, and the variability of these values across the study area is shown. We then applied a novel drought adjustment method that used the strongest SPEI–NDVI timescale relationships for each ecoregion to remove the influence of interannual drought status. Our key result is a 30 m resolution map of drought-adjusted riparian NDVI trends (1985–2018). We highlight and describe locations where impacts of invasive species biocontrol, mine water management, agriculture, changing water levels, and fire are readily visualized with our results. We found more negatively trending riparian areas in association with wide valley bottoms, low-intensity agricultural land uses, and private land ownerships and more positive trends in association with narrow drainages, public lands, and surrounding perennial water bodies (an indication of declining water levels allowing increased vegetative cover). The drought-adjusted NDVI improved the statistical significance of trend estimates, thereby improving the ability to detect such changes. Results from this study provide insight into the strength and timescales of riparian vegetation responses to drought and can provide important information for managing riparian areas within the study area. The novel approach to drought adjustment is readily transferrable to other regions.


PLoS ONE ◽  
2014 ◽  
Vol 9 (10) ◽  
pp. e110200 ◽  
Author(s):  
Rui P. Rivaes ◽  
Patricia M. Rodríguez-González ◽  
Maria Teresa Ferreira ◽  
António N. Pinheiro ◽  
Emilio Politti ◽  
...  

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