DOI: 10.5061/dryad.0zpc86741
title: Data from: neglected puzzle pieces of urban green infrastructure: richness, cover, and composition of insect-pollinated plants in traffic-related green spaces

description: 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
 in 90 sampling sites, and the dataset contains information on the location
 coordinates. In addition, the dataset possesses information on the amount
 of garbage pieces (cigarette filters, plastic boxes, or scraps) revealed
 for each sampling point in traffic-related green spaces.
description: 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
description: # 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 information on the city T (Turku), H (Helsinki), and Ta (Tampere), on the habitat type R (road verge), I (traffic island), and P (parking lot), then on the treatment where letter c indicates control. First number in a code indicates the location site, while second number – the individual quadrat id. There are usually five quadrats per location except two study locations in the dataset. 2. City – there are three cities in the study which are Helsinki, Tampere, and Turku. 3. Control – yes or no refers to the suburban location (yes) and urban location (no). 4. Location id – refers to the code of a location and contains information on the city T (Turku), H (Helsinki), and Ta (Tampere), on the habitat type R (road verge), I (traffic island), and P (parking lot), then, on the treatment where letter c indicates control. Finally, each location has and individual number. 5. Location coordinates – GPS coordinates for each location presented as Latitude (N) and Longitude (E). 6. Location street no – presented as a street title and number of a given location. 7. Habitat type – type of a studied traffic-related habitat: traffic island, parking lot (place), road verge. 8. Habitat code – letter codes for the habitat types: R (road verge), I (traffic island), and P (parking lot). 9. Distance_to_road (m) – actual nearest distance to the road from each studied quadrat measured in meters during the field sampling. 10. Traffic volume (ADT) – traffic volume estimated as yearly averages of daily traffic (ADT) volumes and it measured as vehicles/day. Data has been obtained from the Finnish Transport Infrastructure Agency. The traffic volume map provides the yearly average of daily traffic on the main roads in Finland in 2021. 11. Total plant_cover (%) – total estimated vegetation cover per quadrat. 12. Flowering plant_cover (%) – total estimated cover of insect-pollinated vascular plant species per quadrat flowering at the moment of the survey. 13. Total plant_n_species – total number of plant species identified for the particular quadrat. 14. Total flowering plant_n_species – total number of insect-pollinated vascular plant species per quadrat flowering at the moment of the survey. 15. Plastic pieces n – total number of the pieces of garbage irrespective of size (food boxes and packages, plastic fibers, cigarette filters and the others) per quadrat. 16. LN plastic – log transformed-values for plastic pieces (LN+1) The second table "****CarPLANT_biodiversity data**" represents the relative abundances of the plant species per quadrat, where the cover (%) is represented in decimal numbers). The third table "**CarPLANT_floral community data**" the data are presented as average cover (%) estimated from the number of studied quadrats per location for each particular plant species. The variables are mostly the same as in the first table. A new variable "pollinators" indicate the total number (abundance) of pollinating insects collected from a given location during approximately 20 min time period with a sweep-net collection method. All three tables make up the dataset essential for the project. ## Sharing/Access information Current dataset is shared under CC0 license waiver used by Dryad.