Journal archives for March 2021

March 30, 2021

City Nature Challenge: Australia's 2nd Year


The City Nature Challenge  is back for 2021, with Australian cities back for their second year. The City Nature Challenge has been running since 2016 when it was started as a competition between Los Angeles and San Francisco to record urban biodiversity using the iNaturalist platform. During a 7-day period, over 20,000 observations were made of 2500 species by over 1,000 participants. In 2017 the number of cities involved grew to 16, in 2018 it grew to 68 cities from various countries. 159 cities participated in 2019 and last year 244 cities around the world took part. The result was 41,000 participants contributing 815,000 observations from over 32,000 species around the world. It was expect that over 1 million observations would be uploaded in 2020, but the pandemic put a damper on that. This year however, that goal is back on the table.


This year 5 Australian cities are participating in the challenge using the iNaturalist platform.


The challenge will run for 4 days from Friday April 30th through to Monday May 3rd inclusive. Any observation taken during this time will be included in the challenge results. Following this, from May 4th through to May 9th is the identification period. This time is provided to allow participants to identify as many species as possible from the 4 day challenge period. The challenge is to see which cities can make the most observations, record the most species and engage the most people.


For South Australian residents in and around Greater Adelaide, the City Nature Challenge 2021: Greater Adelaide is the project to join. The area included is the same as for 2020 and extends (following local government area boundaries) from the Murray River mouth, across Lake Alexandrina, up the river, around Murray Bridge, across toward Mount Torrens, up past Kapunda, across to the north of Thompson Beach and along the coast back to the Murray River mouth. This year there is also a specific project for those who wish to make observations outside the registered city areas, the City Nature Challenge 2021: Global Project.


200108 - CNC Greater Adelaide Map


April has been the challenge month since the City Nature Challenge began as this coincides with the Northern Hemisphere Spring. Unfortunately for us this means the challenge will occur in Autumn and we will miss out of recording the tremendous emergence of life in our Spring. (We'll need to wait for the Great Southern Bioblitz for that). However this shouldn't dissuade us, as Cape Town, South Africa frequently takes out top spot in the challenge, showing that it doesn't need to be Springtime to discover your local biodiversity.


So get started by signing up to the Greater Adelaide or Global projects, and join the City Nature Challenge Umbrella Project to see how each city fares as the challenge progresses.

Posted on March 30, 2021 08:04 by cobaltducks cobaltducks | 0 comments | Leave a comment

March 08, 2021

SA iNaturalists - February 2021 Update



This month wrapped up the coolest Summer in SA since 2001/02. A welcome reprieve from the heat waves of the previous Summer.


This February saw 6,430 observations covering 1,587 species from 342 observers. Although this is roughly same number of observations as last month, this actually represents a 10% increase in observation per day, due to the shorter month. There were only 87 species receiving their first iNat record in SA, the lowest number since February last year. It continues to get more difficult to locate species that haven't been previously recorded. So far this year there has been 64.3 observations recorded for every new species added. This is up from an average of 51.1 in 2020. This month the were 75 new observers contributing their first observations in SA. Upon this months observations, 486 identifiers contributed a total of 11,264 identifications.


Uploads for SA at the end of February stand at 178,005 observations of 7,376 species from 2,809 observers with, as of today, 3,479 identifiers providing 325,387 identifications.


The City Nature Challenge is returning for 2021 with observation days April 30th to May 3rd. Last year was the first year Australian cities participated with 4 entries. This year there are at least 18 cities around Australia already signed up. See the full list of participating cities here. The Greater Adelaide area will be participating again. Sign up to the Greater Adelaide project to stay informed.


Top contributors & species observed in February:








(Data used for this post taken on the 8th of March. It excludes any observations from February that were uploaded after this date)

Posted on March 08, 2021 20:31 by cobaltducks cobaltducks | 1 comment | Leave a comment