## 5 Discussion  
The Jaccard similarity analysis found differences among the three habitat patches, which also differ in the temporal evolution of their sonic classes arising from the different combinations of natural and urban events in the early morning, morning, evening and at night. These differences partially support our first hypothesis. As observed in Table 1, only the habitat patches Miraflores and El Bosque, which possess the shortest geographical distance (700 m), had a reasonable similarity in their sonic characteristics composition (average coefficient of Jaccard = 0.556). This occurred particularly in the morning period between 06:00 a.m. and 11:00 a.m., reaching the highest degree of agreement with [PERSON]'s  
Figure 11: Comparison between manual labeling (truth) and labeling by model (pred). \begin{table}
\begin{tabular}{c c c c c c c} \hline
**AUC** & **Amphibian** & **Bird** & **Dog** & **Motor** & **Rain** & **Mean** \\ \hline TPR vs. FPR & 67.800 & 82.345 & 65.837 & 59.112 & 81.847 & 71.000 \\ TPR vs. eFPR & 65.368 & 78.875 & 69.186 & 55.282 & 80.864 & 68.000 \\ \hline \end{tabular}
\end{table} 
Table 3: Areas under the five PSD-ROC curves and the mean value. Figure 12: The PSD-ROC curves for TPR vs. FPR (**left**) and TPR vs. eFPR (**right**) per events. law, confirming our first hypothesis. However, in contrast with [PERSON]'s prediction, in the early morning between 00:00 and 05:00 a.m., these two habitat patches exhibited the lowest similarity degree (average coefficient of Jaccard = 0.359), refuting our first hypothesis in this period. The low similarity between Miraflores and El Bosque in the early morning would suggest a temporal variation in the composition, structure and diversity of the sonic classes. The Miraflores and El Bosque wetlands had a high presence of sonic single events in the early morning, as observed in Figure 8. Unlike the morning period in these same habitats, the presence of the motor and bird single events, as well as that of the sonic class containing the (motor \(+\) bird) combination, was almost negligible in the early morning. This led us to concentrate on the other classes that were still present in the early morning, especially the behavior of the amphibian class. This class is clearly present as a single event, and its combination with the dog event is also present in an important sonic class, (dog \(+\) amphibian). As can be observed in Figure 8, 62% of the amphibian class occurred in the Miraflores wetland, while only 20% occurred in the El Bosque wetland. The sonic class that contains the (dog \(+\) amphibian) combination occurred predominantly in the Miraflores wetland, with a presence of 47%, while in the El Bosque wetland it occurred at a rate of only 10%. Similarly, the noise class with unidentifiable sounds or no events was more predominant in the El Bosque wetland (46%) than in the Miraflores wetland (29%). The greater presence of the amphibian event in the Miraflores wetland compared with the El Bosque wetland, together with a higher percentage of the noise class in the El Bosque wetland in comparison to the Miraflores wetland, would justify the lowest Jaccard coefficient in the early morning. Our findings lead us to reconsider our first hypothesis in light of the temporal variation of sonic classes. As one of our objectives was to highlight the importance of both the green habitats within the city and the sonic events in these habitats, we analyzed the temporal associations between single events and multi-events, both in quantities and in distributions of classes throughout the day, without distinguishing among the habitats. Figure 4 shows the complexity of these sonic associations collected in the three habitat patches during the ten days of activity covered by the experiments. We found that the early morning period between 00:00 and 05:00 a.m. had the greatest presence of single events, especially rain, amphibians and dogs.