A team of University of Queensland scientists conducted a biodiversity survey in their Annerley share house, uncovering 1,150 unique species. This finding significantly exceeded the expected 200 species, revealing a high level of biodiversity in urban environments. The study showcased a variety of species from insects to birds and highlighted the importance of how urban homes and gardens are maintained for fostering biodiversity. Credit: SciTechDaily.com
University of Queensland scientists discovered an unexpected biodiversity of 1,150 speciesA species is a group of living organisms that share a set of common characteristics and are able to breed and produce fertile offspring. The concept of a species is important in biology as it is used to classify and organize the diversity of life. There are different ways to define a species, but the most widely accepted one is the biological species concept, which defines a species as a group of organisms that can interbreed and produce viable offspring in nature. This definition is widely used in evolutionary biology and ecology to identify and classify living organisms.” data-gt-translate-attributes=”[{“attribute”:”data-cmtooltip”, “format”:”html”}]” tabindex=”0″ role=”link”>species in their urban backyard during the 2020 lockdown, challenging perceptions of urban wildlife and highlighting the ecological value of residential areas.
A challenge among three housemates to identify species around their inner-Brisbane home has resulted in an academic research paper, showcasing the rich biodiversity in urban landscapes.
UQ mathematician Dr. Matt Holden, ecologist Dr. Andrew Rogers and taxonomist Dr. Russell Yong took a census of their Annerley share house and its backyard during the COVID-19First identified in 2019 in Wuhan, China, COVID-19, or Coronavirus disease 2019, (which was originally called "2019 novel coronavirus" or 2019-nCoV) is an infectious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). It has spread globally, resulting in the 2019–22 coronavirus pandemic.” data-gt-translate-attributes=”[{“attribute”:”data-cmtooltip”, “format”:”html”}]” tabindex=”0″ role=”link”>COVID-19 lockdowns in 2020, and discovered 1,150 unique species of animals, plants, and fungi over a 12-month period.
Unexpected Biodiversity
“We asked a large number of ecologists and conservation scientists how many species they’d expect to find in this setting and they predicted only 200,” Dr. Holden said.
“But after 60 days of surveying, we’d already discovered 777 species.
“It shows suburban houses and apartments could have far more biodiversity than ever imagined, especially when it comes to insects.”
The idea of the species count was born when Dr. Rogers went to vacuum cobwebs in his room and wondered how many spiders were on the property.
(L-R) Dr. Matthew Holden, Dr. Russell Yong, and Dr. Andrew Rogers have been getting closely acquainted with their household’s wildlife. Credit: The University of Queensland
“The three of us soon envisioned a plan to comb through the house and backyard in search of other critters that resided alongside us,” Dr. Holden said.
The survey revealed richly biodiverse creatures including 436 moth and butterfly species, 56 different spiders, eight reptiles, and 56 birds.
The bird species included tawny frogmouths, laughing kookaburras, blue-faced honeyeaters, rainbow lorikeets, spotted doves, and Brisbane favorite, the Australian white ibis.
“Blue-tongued skinks hibernated under the garage and at night blue-banded and teddy-bear bees slept in the hedges under the front window,” Dr. Holden said.
Surprising Discoveries
The researchers were also surprised to discover three species not previously recorded in Australia’s leading biodiversity database, Atlas of Living Australia – a mosquito, a sandfly, and an invasive flatworm, Platydemus manokwari, which is responsible for native snail population declines, around the world.
Musk lorikeet. Credit: Jim Churches
“The house was a complex ecosystem of species interacting – we stumbled upon the moth Scatochresis innumera, which as a caterpillar spends its whole time feeding inside the dung of a Brushtail Possum before emerging as an adult,” Dr. Holden said.
“The Parilyrgis concolor is another moth species whose caterpillar lives in spider webs and devours spider poop to survive.”
Urban Ecosystems and Biodiversity
Dr. Holden said homes across all urban areas could play host to similar biodiversity.
“It depends on how people tend to their homes and gardens – keeping low maintenance trees and shrubs and eliminating manicured lawns and pesticides will significantly boost the number of critters found,” he said.
“You don’t have to go traveling to connect with Australia’s diverse range of species, just look in your own backyard.”
The research is published in Ecology.
Reference: “The house of a thousand species: The untapped potential of comprehensive biodiversity censuses of urban properties” by Andrew M. Rogers, Russell Q.-Y. Yong and Matthew H. Holden, 01 December 2023, Ecology.
DOI: 10.1002/ecy.4225
Source: SciTechDaily
