Table 2 Synthetic table for the climatic indices’ calculation of the used time series (1990–2022).

Indices	Starting year	Ending year	Slope	STD of slope	P-value
Tmax	1990	2022	− 0.050	0.013	0.001***
SU25	1990	2022	− 1.981	0.542	0.001***
TMin	1990	2022	− 0.063	0.020	0.004***
TMean	1990	2022	0.036	0.016	0.028*
TX10p	1990	2022	0.378	0.106	0.001***
TX90p	1990	2022	− 0.567	0.190	0.006***
TN10p	1990	2022	− 0.188	0.084	0.032*
TN90p	1990	2022	− 0.009	0.124	0.94ns
WSDI	1990	2022	− 0.663	0.349	0.067ns
CSDI	1990	2022	− 0.249	0.103	0.021*
RX1day	1990	2022	2.026	0.793	0.016*
RX5day	1990	2022	5.426	2.244	0.022*
SDII	1990	2022	0.076	0.024	0.004**
R10mm	1990	2022	0.817	0.307	0.001**
R20mm	1990	2022	0.416	0.399	0.892ns
R25mm	1990	2022	0.252	0.080	0.004***
CDD	1990	2022	− 0.341	0.390	0.388ns
CWD	1990	2022	0.106	0.281	0.709ns
R95P	1990	2022	18.211	5.778	0.004***
R99P	1990	2022	10.403	4.523	0.028*
PRCPTOT	1990	2022	24.503	7.074	0.002***

ns not significant: p > 0.05, significant: *p < 0.05, highly significant: **p < 0.01, and very highly significant: ***p < 0.001, STD standard deviation, the explanation of all the indices are presented in the Supplementary Table 1. These data are identical for both watersheds; lack of separate weather stations challenged the attempt to dissociate information.

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