PNV - Probability distribution for Olea europaea

Overview:

Potential Natural Vegetation (PNV): potential probability of occurrence for the Olive tree from 2018 to 2020

Traceability (lineage):

This is an original dataset produced with a machine learning framework which used a combination of point datasets and raster datasets as inputs. Point dataset is a harmonized collection of tree occurrence data, comprising observations from National Forest Inventories (EU-Forest), GBIF and LUCAS. The complete dataset is available on Zenodo. Raster datasets used as input are: monthly time series air and surface temperature and precipitation from a reprocessed version of the Copernicus ERA5 dataset; long term averages of bioclimatic variables from CHELSA; elevation, slope and other elevation-derived metrics and long term monthly averages snow probability. For a more comprehensive list refer to Bonannella et al. (2022) (in review, preprint available at: https://doi.org/10.21203/rs.3.rs-1252972/v1 ).

Scientific methodology:

Probability and uncertainty maps were the output of a spatiotemporal ensemble machine learning framework based on stacked regularization. Three base models (random forest, gradient boosted trees and generalized linear models) were first trained on the input dataset and their predictions were used to train an additional model (logistic regression) which provided the final predictions. More details on the whole workflow are available in the listed publication.

Usability:

Probability maps are particularly useful when compared with existing products of potential distribution of species or when combined with maps of realized distribution: gaps in potential and realized distribution can be identified and used as information for future programs of tree planting or forest restoration.

Uncertainty quantification:

Uncertainty is quantified by taking the standard deviation of the probabilities predicted by the three components of the spatiotemporal ensemble model.

Data validation approaches:

Distribution maps were validated using a spatial 5-fold cross validation following the workflow detailed in the listed publication.

Completeness:

The raster files perfectly cover the entire Geo-harmonizer region as defined by the landmask raster dataset available here.

Consistency:

Areas which are outside of the calibration area of the point dataset (Iceland, Norway) usually have high uncertainty values. This is not only a problem of extrapolation but also of poor representation in the feature space available to the model of the conditions that are present in this countries.

Positional accuracy:

The rasters have a spatial resolution of 30m.

Temporal accuracy:

The maps cover the period 2018 - 2020

Thematic accuracy:

Both probability and uncertainty maps contain values from 0 to 100: in the case of probability maps, they indicate the probability of occurrence of a single individual of the target species, while uncertainty maps indicate the standard deviation of the ensemble model.

Simple

Date ( Publication )
NaT
Identifier
unknown
Status
Under development
Author
- Carmelo Bonannella ( )

Point of contact
- Carmelo Bonannella

Maintenance and update frequency
As needed
Keywords ( Theme )
  • Vegetation
  • Geoharmonizer
  • geoharvester
  • geodata
Keywords ( Place )
  • Europe
GEMET - INSPIRE themes, version 1.0 ( Theme )
Use limitation
None
Access constraints
Copyright
Use constraints
otherRestictions
Distance
30 m
Metadata language
eng
Character set
UTF8
Topic category
  • Environment
Begin date
-
End date
-
N
S
E
W
thumbnail


Reference system identifier
EPSG:3035
Number of dimensions
2
Dimension name
Row
Resolution
30 m
Dimension name
Column
Resolution
30 m
Cell geometry
Area
Distribution format
  • GeoTIFF ( XY )

  • OGC WMS ( 1.3 )

OnLine resource
gh:veg_olea.europaea_pnv.eml_p_30m_0..0cm_2018..2020_eumap_epsg3035_v0.2 ( OGC:WMS )
OnLine resource
https://s3.eu-central-1.wasabisys.com/eumap/veg/veg_olea.europaea_pnv.eml_p_30m_0..0cm_2018..2020_eumap_epsg3035_v0.2.tif ( WWW:DOWNLOAD-1.0-http--download )
Hierarchy level
Dataset

Conformance result

Date
2010-12-08
Explanation
See specified reference
Pass
Yes
Statement
derived from XY

gmd:MD_Metadata

File identifier
b0720169-4841-42b9-98b1-dc4e17c6ede7 XML
Metadata language
en
Character set
UTF8
Date stamp
2021-01-14T10:37:57
Metadata standard name
ISO 19115:2003/19139
Metadata standard version
1.0
Point of contact
- Carmelo Bonannella ( )

Citation proposal


Carmelo Bonannella () (NaT) . PNV - Probability distribution for Olea europaea.
https://data.opendatascience.eu/geonetwork/srv/api/records/b0720169-4841-42b9-98b1-dc4e17c6ede7

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