Publications by authors named "Ake Berg"

Abundant citizen science data on species occurrences are becoming increasingly available and enable identifying composition of communities occurring at multiple sites with high temporal resolution. However, for species displaying temporary patterns of local occurrences that are transient to some sites, biodiversity measures are clearly dependent on the criteria used to include species into local species lists. Using abundant opportunistic citizen science data from frequently visited wetlands, we investigated the sensitivity of α- and β-diversity estimates to the use raw versus detection-corrected data and to the use of inclusion criteria for species presence reflecting alternative site use.

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Article Synopsis
  • Habitat destruction is a major cause of biodiversity loss, and existing research lacks standardization in data collection and analysis, making it hard to draw firm conclusions.
  • A systematic review of the literature yielded 117 studies on species composition in various habitat sizes, revealing a concentration of research in tropical forests, while also covering a range of species including invertebrates and vertebrates.
  • The gathered data on species abundances, sampling efforts, and additional metadata will help create standardized comparisons to better understand how habitat fragmentation impacts biodiversity.
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To increase the efficacy of agri-environmental schemes (AES), as well as farmers' environmental engagement, practitioners are increasingly turning to collective forms of agri-environmental management. As yet, empirical evidence from such approaches is relatively scarce. Here, we examined a farmland bird conservation project coordinated by BirdLife Sweden, the Swedish Volunteer & Farmer Alliance (SVFA).

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Article Synopsis
  • * A new database has been created, containing over 1.6 million samples from 78 countries, which includes data on around 28,000 species experiencing various types of human impacts across different ecosystems.
  • * This comprehensive dataset, part of the PREDICTS project, offers a much broader perspective for analyzing biodiversity trends and will be publicly accessible in 2015, enhancing our understanding of ecological changes.
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Agriculture is the major land use at a global scale. In addition to food production, multifunctionality of landscapes, including values and ecosystem services like biodiversity, recreation and culture, is now focus for management. This study explores how a scenario approach, involving different stakeholders, may help to improve landscape management for biodiversity conservation.

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Predation rates on artificial wader nests, solitary curlew (Numenius arquata) and lapwing (Vanellus vanellus) nests and lapwing nests in colonies were studied on a farmland site in central Sweden. Predation rates were highest on artificial wader nests, intermediate on solitary curlew and lapwing nests and lowest on lapwing nests in colonies, probably because of active defence of adults at real nests and/or because of selection of nest sites with lower predation risk by breeding birds. A comparison of nests close to (≤50 m) and far away from (≥200 m) forest edges revealed no increased predation risk close to edges for any of the studied nest types.

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