Invertebrates are dominant species in primary tropical rainforests, where their abundance and diversity contributes to the functioning and resilience of these globally important ecosystems. However, more than one-third of tropical forests have been logged, with dramatic impacts on rainforest biodiversity that may disrupt key ecosystem processes. We find that the contribution of invertebrates to three ecosystem processes operating at three trophic levels (litter decomposition, seed predation and removal, and invertebrate predation) is reduced by up to one-half following logging. These changes are associated with decreased abundance of key functional groups of termites, ants, beetles and earthworms, and an increase in the abundance of small mammals, amphibians and insectivorous birds in logged relative to primary forest. Our results suggest that ecosystem processes themselves have considerable resilience to logging, but the consistent decline of invertebrate functional importance is indicative of a human-induced shift in how these ecological processes operate in tropical rainforests.

We present the results of our eighth annual horizon scan of emerging issues likely to affect global biological diversity, the environment, and conservation efforts in the future. The potential effects of these novel issues might not yet be fully recognized or understood by the global conservation community, and the issues can be regarded as both opportunities and risks. A diverse international team with collective expertise in horizon scanning, science communication, and conservation research, practice, and policy reviewed 100 potential issues and identified 15 that qualified as emerging, with potential substantial global effects. These issues include new developments in energy storage and fuel production, sand extraction, potential solutions to combat coral bleaching and invasive marine species, and blockchain technology. Aims of Horizon ScanningWe have conducted an annual horizon scan of global conservation issues since 2010 with the aim of highlighting, by consensus, emerging topics that are not yet widely known in the conservation community but could have substantial effects on biological diversity worldwide in the medium to long term. Our iterative, transferable process of horizon scanning, which is designed to be both transparent and democratic, is carried out by a team with a wide range of experiences and areas of expertise.Our aim has been to focus attention and stimulate debate about these subjects, potentially leading to new research foci, policy developments, or business innovations. These responses should help to facilitate better-informed forward-planning. It is difficult to gauge the direct effects of our horizon scans on the research, policy, or business communities, except through personal communication and hearsay. However, several topics recognized in our previous horizon scans Trends This is the eighth such annual horizon scan.An international team with expertise in horizon scanning, science communication, and conservation research, practice, and policy identified 15 issues, following widespread consultation and a Delphi-like scoring process to identify the most important.The issues were wide ranging, and include sand extraction, blockchain technology, use of robotics to combat invasive species, and new developments in energy storage and fuel production. There is now substantial action on this issue internationally, with several governments, including those of the USA and the UK, introducing legislative bans on microbeads in cosmetics and detergents, and many cosmetics companies voluntarily committing to halt their use of microplastics by 2020 [2,3]. New research on the effects of microbeads has revealed biological responses in both terrestrial and aquatic environments, with evidence demonstrating that microplastics reduce the survival and fitness of earthworms Lumbricus terrestris [4] and facilitate the accumulation of sorbed organic pollutants in fish [5]. Discussion of the use of gene editing to control invasive species or disease vectors, raised in our 2014 horizon scan [6], has increased...

The Black Lives Matter Movement, which gained unprecedented global momentum in mid‐2020, triggered critical reflection on systemic discrimination of disadvantaged groups across many domains of society. It prompted us, as early‐career researchers (ECRs) in conservation science, to examine our own awareness of ongoing injustices within our field, the role we play in perpetuating or countering these injustices, and how to move forward. Colonialist ideologies and power dynamics throughout the history of conservation practice and research have left a long‐lasting legacy of inequality and systemic racism. While improvements have been made, these legacies continue to influence teaching and practice today. In this perspective piece, we reflect on the impacts of conservation’s colonial past and how the sector has developed. We then explore how current traditional routes into conservation, and the dominance of these approaches, can leave ECRs underprepared to address modern‐day conservation issues due to a limited understanding of conservation’s history and key theories from other fields. We end by offering a set of suggestions encouraging others to learn and practise fairer and more inclusive conservation practices. Read the free Plain Language Summary for this article on the Journal blog.