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# Budapest's ponds point to local ecology more than urban density
- URL: https://intelligence.wildlandseco.com/2026-11-01-budapest-pond-mosquito-community/
- Published: 2026-11-01T14:35:49.000Z
- Updated: 2026-11-01T14:35:49.000Z
- Description: Mosquito abundance in 93 ponds was more strongly associated with fish presence than surrounding urbanization.
- Author: Benjamin Worlund
- Tags: Cities, Water, One Health, #ecological-intelligence, #brief-2026-11-01, #landscape-city-watch, #peer-reviewed, #geo-europe

Evidence

Peer-reviewed

Geography

93 garden and other urban ponds, Budapest, Hungary

System

Urban pond communities, mosquitoes and fish

## WHAT THE EVIDENCE SAYS

Using net surveys and eDNA, researchers sampled 40 garden and 53 other ponds. Only two had invasive Aedes koreicus. Fish presence correlated negatively with mosquito occurrence and abundance; urbanization was not a major explanatory variable.

## WHY IT MATTERS / OUR READ

Pond design and food-web composition can matter more than the city's average built-cover measure.

## CAVEATS / UNCERTAINTY

Observational fish association is not a blanket recommendation to stock urban ponds; introduced fish can harm amphibians and invertebrates. Detection does not imply disease transmission.

## SOURCE

Urban Ecosystems — Tornero et al. (30 Oct 2026)  
[View original evidence ↗](https://doi.org/10.1007/s11252-026-02139-5?ref=intelligence.wildlandseco.com)

From the Morning Brief · 2026-11-01

[Read the full Morning Brief →](https://intelligence.wildlandseco.com/morning-brief-2026-11-01/)