Urbanization poses a significant challenge to native wildlife, with many species struggling to adapt to the drastic habitat changes and Pollution that come with city life. However, a recent study published in PLOS ONE reveals a surprising exception: slugs and snails may prefer urban environments in Los Angeles.
This study, led by Joseph Curti from the University of California, Los Angeles, and colleagues, sheds light on the varying degrees of urban tolerance among different species and offers valuable insights for biodiversity Conservation in cities.
The researchers utilized data from iNaturalist, a comprehensive database of species observations contributed by both scientists and community members, to assess how well 512 terrestrial animal species native to southern California tolerate urban environments.
These species were categorized into groups such as mammals, reptiles and amphibians, birds, butterflies and moths, spiders, bees and wasps, and slugs and snails. The team then calculated an urban tolerance score for each species and examined their distribution across a grid of squares covering Los Angeles, correlating these findings with levels of urbanization, including factors like light and noise Pollution.
Overall, the study found that most native species prefer less urbanized areas. Slugs and snails, however, were a notable exception, thriving in more urbanized environments.
In contrast, butterflies and moths were the least urban-tolerant, with mammals, reptiles, and amphibians also showing significant aversion to urban areas. While birds, spiders, and ladybeetles displayed some level of urban tolerance, they too generally favored less urbanized locations.
The implications of this study are significant for urban planning and Conservation efforts. By identifying species that are more or less tolerant of urban environments, city planners can better target Conservation initiatives.
For example, butterfly observations could guide efforts to protect endangered species like the Palos Verdes blue butterfly. Furthermore, the study provides a baseline for evaluating the success of biodiversity initiatives in urban settings.
The authors highlight the value of crowd-sourced data, despite its limitations, such as the varying detectability of species by the public. This rich database can inform strategies to manage and promote biodiversity within cities.
They emphasize the importance of ongoing collaboration with the City of Los Angeles to understand native species distribution and their relationship with urban intensity.
The methodology developed in this study is intended to be reevaluated over time to track and enhance efforts to increase urban native species within Los Angeles.
This article by Trinity Sparke was first published by One Green Planet on 26 June 2024. Image Credit :Gunter Nuyts/Shutterstock.
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