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Journal article
Linking democracy and biodiversity conservation: Empirical evidence and research gaps
Increasing human pressure threatens plant and animal species with extinction worldwide. National political institutions constitute an important arena for biodiversity conservation. Yet, the relationship between how democratic these national institutions are and a country’s efforts towards and track-record for biodiversity conservation remains poorly understood. In this review, we outline the...Rydén, Oskar ; Zizka, Alexander ; Jagers, Sverker ; Lindberg, Staffan ; Antonelli, Alexandre
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Journal article
The pitfalls of biodiversity proxies: Differences in richness patterns of birds, trees and understudied diversity across Amazonia
Most knowledge on biodiversity derives from the study of charismatic macro-organisms, such as birds and trees. However, the diversity of micro-organisms constitutes the majority of all life forms on Earth. Here, we ask if the patterns of richness inferred for macro-organisms are similar for micro-organisms. For this, we barcoded samples...Ritter, Camila D. ; Faurby, Søren ; Bennett, Dominic J. ; Naka, Luciano N. ; ter Steege, Hans …
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Journal article
Unraveling the Phylogenomic Relationships of the Most Diverse African Palm Genus Raphia (Calamoideae, Arecaceae)
Palms are conspicuous floristic elements across the tropics. In continental Africa, even though there are less than 70 documented species, they are omnipresent across the tropical landscape. The genus Raphia has 20 accepted species in Africa and one species endemic to the Neotropics. It is the most economically important genus...Helmstetter, Andrew J. ; Kamga, Suzanne Mogue ; Bethune, Kevin ; Lautenschläger, Thea ; Zizka, Alexander …
Rain forests, Africa, Madagascar, Sequence capture, Exons, Phylogenomics, and Raphia
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Journal article
sampbias, a method for quantifying geographic sampling biases in species distribution data
Geo‐referenced species occurrences from public databases have become essential to biodiversity research and conservation. However, geographical biases are widely recognized as a factor limiting the usefulness of such data for understanding species diversity and distribution. In particular, differences in sampling intensity across a landscape due to differences in human accessibility...Zizka, Alexander ; Antonelli, Alexandre ; Silvestro, Daniele
collection effort, Global Biodiversity Information Facility (GBIF), roadside bias, presence only data, and sampling intensity
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Research report
Exploring the Impact of Political Regimes on Biodiversity
National governments are the main actors responsible for mapping and protecting their biodiversity, but countries differ in their capacity, willingness, and effectiveness to do so. We quantify the global biodiversity managed by different regime types and developed a tool to explore the links between level of democracy and other key...Zizka, Alexander ; Rydén, Oskar ; Edler, Daniel ; Klein, Johannes ; Aronsson, Heléne …
Democracy, Regime type, Autocracy, Specimen collection, and Biodiversity
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Journal article
No one-size-fits-all solution to clean GBIF.
Species occurrence records provide the basis for many biodiversity studies. They derive from georeferenced specimens deposited in natural history collections and visual observations, such as those obtained through various mobile applications. Given the rapid increase in availability of such data, the control of quality and accuracy constitutes a particular concern.... -
Journal article
Disproportionate extinction of South American mammals drove the asymmetry of the Great American Biotic Interchange.
The interchange between the previously disconnected faunas of North and South America was a massive experiment in biological invasion. A major gap in our understanding of this invasion is why there was a drastic increase in the proportion of mammals of North American origin found in South America. Four nonmutually... -
Journal article
Selective extinction against redundant species buffers functional diversity
The extinction of species can destabilize ecological processes. A way to assess the ecological consequences of species loss is by examining changes in functional diversity. The preservation of functional diversity depends on the range of ecological roles performed by species, or functional richness, and the number of species per role,...Pimiento, Catalina ; Bacon, Christine D. ; Silvestro, Daniele ; Hendy, Austin ; Jaramillo, Carlos …
global change, molluscs, competition, Caribbean, extinction, and invertebrates
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