@article{fdi:010077130, title = {{D}esigning eco-friendly water intake portfolios in a tropical {A}ndean {S}tream {N}etwork}, author = {{G}onzalez-{Z}eas, {D}. and {R}osero-{L}opez, {D}. and {W}alter, {T}. and {F}lecker, {A}. and {L}loret, {P}. and {D}e {B}ievre, {B}. and {C}ondom, {T}homas and {O}sorio, {R}. and {D}angles, {O}livier}, editor = {}, language = {{ENG}}, abstract = {{A} {I}n view of the rapid proliferation of water infrastructures worldwide, balancing human and ecosystem needs for water resources is a critical environmental challenge of global significance. {W}hile there is abundant literature on the environmental impacts of individual water infrastructures, little attention has been paid to their cumulative effects in river networks, which may have basin-to-global impacts on freshwater ecology. {H}ere we developed a methodological framework based on {P}areto frontier analysis for optimizing trade-offs between water withdrawal and ecological indicators. {W}e applied this framework to a mountainous {E}cuadorian headwater river network that is part of a continental water transfer for supply and demand management to optimize ecological conditions and the operation of 11 water intake structures used to provide potable water to the city of {Q}uito. {W}e found that the current water intake configuration has an important effect on the total length of fifth-order stream sections (65% reduction compared to premanaged condition) and isolates 70.9% of the headwater stream length. {T}he {P}areto frontier analysis identified water intake portfolios (i.e., different combinations of intake sites) that decreased ecological impacts by 7.8% points (pp) and 13.0 pp for connectivity and stream order change, respectively, while meeting {Q}uito's water demands. {A}dditional portfolios accounting for monthly variability in water demand and resources further decrease the ecological impact up to 9.6 pp in connectivity and 13.4 pp in stream order. {T}hese eco-friendly portfolios suggest that adaptive management at basin level may help optimize water withdrawal to fulfill urban demands while preserving ecological integrity.}, keywords = {{EQUATEUR} ; {CHALPI} {BASSIN} ; {NAPO} {PROVINCE}}, booktitle = {}, journal = {{W}ater {R}esources {R}esearch}, volume = {55}, numero = {8}, pages = {6946--6967}, ISSN = {0043-1397}, year = {2019}, DOI = {10.1029/2019wr025190}, URL = {https://www.documentation.ird.fr/hor/fdi:010077130}, }