Citizens help scientists demonstrate value of protected areas in biodiversity hotspots

Citizens help scientists demonstrate value of protected areas in biodiversity hotspots
Restricted to the Atlantic Forests of Brazil and at risk of extinction, this species require effective protected areas to prevent the loss and degradation of its forest habitats. Credit: Hector Bottai

Protected areas are considered the most important tool for curbing the ongoing biodiversity loss, but a lack of field data hampers efforts to measure how effective they are in practice. Scientists analyzed records collated by thousands of citizens and showed that protected areas are contributing significantly to the conservation of rare and threatened birds across tropical forests hotspots by preventing deforestation and forest degradation.

To measure the effect of protected areas, researchers needed to contrast inside protected areas with those from similar but unprotected sites. They focused on eight regions classified as global hotspots, that is, with very high levels of unique biodiversity but which have already lost most of their native habitat. "Regions of the world with the most threatened biodiversity are precisely the ones where we need effective protected areas the most," stated Victor Cazalis, of the University of Montpellier and lead author of the study. "Unfortunately, these regions often lack the biodiversity data needed to evaluate how good their protected areas are."

New citizen science initiatives are filling this data gap. The research team analyzed records from eBird, the world's largest citizen science platform for biodiversity. Including hundreds of millions of bird observations collected by contributors ranging from amateur bird enthusiasts to skilled ornithologists, eBirds' coverage of tropical regions has expanded rapidly in the past decade. After carefully filtering these data to select the most robust observations, the analyses focused on over 2.6 million observations of 5,400 bird species made by nearly 7,000 observers.

  • Citizens help scientists demonstrate value of protected areas in biodiversity hotspots
    More than 70% of the Atlantic Forests of South America have already been lost. Protected areas are key to the protection of the remaining habitat and its many unique species. Credit: Ana Rodrigues
  • Citizens help scientists demonstrate value of protected areas in biodiversity hotspots
    Map. Credit: Victor Cazalis

The results, published in the scientific journal Nature Communications, show that protection has a clear positive effect on the conservation prospects of . "We found that protected areas are particularly effective at conserving species that have small ranges, are at risk of extinction, or that are specialized in forest habitats," Cazalis noted, "which is very good news as these are the species most in need of conservation." The study also shows that protected areas achieve these positive outcomes both by preventing deforestation, and by retaining the quality of the remaining forest habitats.

"Our findings confirm that are an effective tool for preventing biodiversity declines," said Ana Rodrigues, of the French National Center for Scientific Research and a co-author in the study. "So we need to continue investing in expanding their coverage and ensuring their adequate management." These results are timely, as governments are now negotiating global conservation targets as part of the post-2020 Biodiversity Framework, due to be adopted in 2021 at the fifteenth Conference of the Parties to the Convention on Biological Diversity.


Explore further

Protected areas can 'double' imperiled species populations

More information: Victor Cazalis et al, Effectiveness of protected areas in conserving tropical forest birds, Nature Communications (2020). DOI: 10.1038/s41467-020-18230-0
Journal information: Nature Communications

Provided by Center for Functional and Evolutionary Ecology (CEFE)
Citation: Citizens help scientists demonstrate value of protected areas in biodiversity hotspots (2020, September 15) retrieved 27 September 2020 from https://phys.org/news/2020-09-citizens-scientists-areas-biodiversity-hotspots.html
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