GridDER

GridDER is a tool for identifying biodiversity records that have been designated locations on widely used grid systems. Our tool also estimates the degree of environmental heterogeneity associated with grid systems, allowing users to make informed decisions about how to use such occurrence data in global change studies. We show that a significant proportion (~13.5%; 261 million) of records on GBIF, largest aggregator of natural history collection data, are potentially gridded data, and demonstrate that our tool can reliably identify such records and quantify the associated uncertainties.The package can serve as a tool to not only screen for gridded points, but to quantify the geographic and environmental uncertainties associated with these records, which can be used to inform models and analyses that utilize these data, including those pertaining to global change

By Feng X, Rocha T, Thammavong HT, Tulaiha R, Chen X, Xie Y, Park D in R GridDER Biodiversity Spatial Analysis

Forest classes of GCAM Demeter dataset

A recent Land-use product called GCAM-Demeter presents the highest global spatial resolution (0.05 º) until now, with future projections (2015-2100) under different scenarios of climate change (combination of SSPS and RCPs) Consistent with the design of CMIP6. Here I using mean of five GCMs and the first version (i.e the harmonized projection) to assess the forest classes through time and scenarios.

By Tainá Rocha in Forest loss Global change R codes

GLOBAL LULC

Land-Use Harmonization (LUH2) is part of the World Climate Research Program Coupled Model Intercomparison Project of advanced Earth System Models (ESM) able to estimate the combined effects of human activities (e.g. land use and fossil fuel emissions) on the carbon-climate system. Here I managed the LUH2 data from years 850 to 2100 and convert from NetCDF to TIFF format. I also create a new categorical data that is a land use land cover (LULC) based on raw LUH2 data

By Tainá Rocha in Global changes LUH2 R codes

Green Status of Species

It complements the IUCN Red List by providing a tool for assessing the recovery of species’ populations and measuring their conservation success. In 2020, Green Status of Species assessments became an optional part of Red List assessments.

By Tainá Rocha in IUCN Global Changes Biodiversity Conservation