Hi! So to replicate the data, you can click on the GBIF link which will take you to a large data file with all of the findings. GBIF's data is more regularly updated and tends to have a more complete picture of the animals present since some have subtle range crossover not usually picked up by IUCN

Hey there! So just to clear up, this map only includes wild animals and not captive species in farms, safari parks, zoos or exotic hunting facilities.

There could be a lot of reasons for low numbers such as low overall biodiversity, extripation (extinction within a local area), or a lack of data as to whether a species is present. It all depends on context really.

Not necessarily. Not all endangered species were once found throughout the entire US. States with fewer endangered species may have had some species go extinct or may have lower biodiversity due to environmental factors.

This map includes plants, animals and fungi!

Hi there! Thank you for the praise! Let me break down your questions:

1. It is possible to generate these statistics and to figure out the biodiversity and proportion of endangered species sightings in comparison to the other species present. The two biggest issues are uncertainty of location and the size of the data in question. Because these animals are protected, some of the data is obscured to decrease the likelihood of poaching. This makes certain spatial analysis tricky and can lead to a decrease in accuracy. Second is that there are billions of sightings logged in GBIF and comparing these together even at smaller scales like a country or state become challenging. My lowly MacBook Pro and free GIS software simply doesn't have the bandwidth to conduct that level of analysis (although I really want to!). All of this to say, the solutions you've presented are possible!
2. The way a species is defined as endangered for this map is controlled by an international agency. While different states and countries can create their own endangered species list, IUCN is the most internationally recognized. This eliminates bias on the local/state level but doesn't remove our charismatic animal-centric bias which is a big problem facing conservation.

Hopefully those answered your questions!

Sources: IUCN, GBIF

Tools: R, QGIS

Notes: This map depicts the number of endangered species in each US state. The data in this map are based on the International Union for Conservation of Nature’s Red List of Threatened Species which classifies organisms by their risk of global extinction. The species used to create this list are categorized as either Endangered or Critically Endangered. The data were pulled from the Global Biodiversity Information Facility which houses publicly available species occurrence data from citizen science projects such as iNaturalist and eBird as well as institutional and governmental surveys. This map includes animal, fungi, and plant species found in both terrestrial and aquatic ecosystems. I created an older version of this map around two years ago and thought that it was due for an upgrade. I released this map today since it's the 50th anniversary of the signing of the US Endangered Species Act into law. We've come a long way, but there is still more to be done in the way of protecting species from extinction. As always if you have any praise, constructive criticism or questions, let me know! I love hearing from you all! Remember to be kind to others and as always stay awesome Reddit!

I’m always working on my skills and will continue to make maps for as long as I find joy in making them. I hope you stick around to see what I make next :) But thank you for concern!

Hi everyone, thank you to everyone who left constructive feedback! As I mentioned I’m always working on improving and take these comments into consideration. It’s clear this map has ruffled feathers and I wanted it to be known that I see the points people are making. I hope people can continue to be kind to one another in the comments because that’s how healthy discussion happens. Thanks again everyone!

Private and public and as mentioned on the map, it includes all associated costs including housing and meals

It is by semester! I apologize!

Sources: US Department of Education, Institute of Education Sciences, The National Center for Education Statistics (NCES)

Tools: R (data processing and analysis), Excel, QGIS

EDIT: This map is by semester not by year!

Notes: This map depicts the average cost of attending college in each US State. The data are depicted using In-State costs since most students in the United States attend college in their home state. The US Department of Education lists the costs of attending college as tuition and associated fees, room and board, ground transportation, and books and other school supplies. This map averages the cost of living on or off campus. A Title IV post-secondary institution is a college or university that participates in the federal student aid program. These institutions are highly regulated by the US Department of Education and are required to report their costs annually. This map is only based on baccalaureate (bachelor’s degree) or baccalaureate-equivalent institutions. As with all my work, I love hearing your feedback. So if you have any praise, constructive criticism or have any questions, please let me know! As always, be respectful in the comments, be kind to each life form and be kind to yourself. Happy Holidays Reddit!

P.S. I've been on hiatus from making maps since I'm currently in grad school but this one has been cooking for awhile. If you're ever looking for maps, GIS analysis or data analysis for your own projects, reach out to me and let's start a conversation!