neglected puzzle pieces of urban green infrastructure: richness, cover, and composition of insect-pollinated plants in traffic-related green spaces

Insect-pollinated vascular plants in spontaneous vegetation provide essential ecosystem services and benefit wildlife. However, floral communities associated with traffic-related green spaces are rarely considered valuable elements of urban green infrastructure (UGI). The dataset contains information on species-based floral communities of vascular insect-pollinated plants in traffic-related green spaces in three highly populated Finnish cities. Those are Helsinki (665 558 inhabitants), Tampere (244 029 inhabitants), and Turku (175 645 inhabitants). Data were collected during the mean flowering phenophase of vascular plants in July-August 2022 from two types of locations: (i) urban (city centers) and (ii) suburban (city outskirts), and from three types of traffic-related green spaces: (i) traffic islands, (ii) parking lots, (iii) road verges. The dataset contains information for the 93 vascular insect-pollinated plant species flowering during the survey. Sampling campaign was conducted i..., Data were collected using standard quadrat placement method with the subsequent plant species identification, counting the total number of species, the total number of flowering species and estimating the cover (%) of both parameters. Plant species were identified using identification keys for Finnish vascular plants (Kurtto and Helynranta 2018) and the apps such as Pl@ntNet and INaturalist apps. In each city, it was selected 15 urban and 15 suburban locations, five replicates per habitat type per city per location, and from three to five quadrats per sampling site (N=446 quadrats in total).
Kurtto A, Helynranta L (2018) Otavan värikasvio. Otava, Helsinki, , # Vascular insect-pollinated plant communities in traffic-related landscapes in Finland

[https://doi.org/10.5061/dryad.0zpc86741](https://doi.org/10.5061/dryad.0zpc86741)

The dataset contains three tables related to the fieldwork sampling of the richness, cover, and community composition of insect-pollinated vascular plants during the mean flowering phenophase of insect-pollinated plants in the European boreal zone (July and August) . The acronym of the whole project is \"CarPLANT\" as it aims to reveal the effects of traffic pollution on plant and pollinator biodiversity in urban environments.

## Description of the data and file structure

The first table of the current dataset is entitled \"**CarPLANT_sampling points_locations_habitats**\".
The dataset contains 16 columns with certain titles. Below, the column titles are explained in detail.

1. Quadrat id ‒ this column reports information on the individual codes of the studied quadrats. Each code contains the component revealing inf...