Biodiversity credits are an emerging vehicle for pro-environmental financing. Here we define and delimit biodiversity credits and explore the pathways through which credits can be issued. We scrutinize early evidence from pilots and suggest lessons from other market-based incentives for conservation and climate mitigation, including biodiversity offsets and forest carbon credits that have attracted large private funding flows, but have been questioned regarding their additionality, permanence, and leakage. All these issues apply to biodiversity credits, but they face yet another challenge: rendering biodiversity commensurable. While new monitoring technologies can help quantify biodiversity, tradeoffs exist between simple metrics that enable liquid markets, and costly ones that more adequately represent biodiversity. To avoid carbon and offset market mistakes, biodiversity credit design, implementation, and impact evaluation requires more robust crediting baselines, standards, and governance. Quality credits will be more expensive than those cutting integrity corners, which may dampen the expected biodiversity credit boom
Output association: LCNR supported
Marine and freshwater mammals are increasingly threatened due to human activity. To improve conservation practice, decisions should be informed by the available evidence on the effectiveness of conservation actions
. Using a systematically collated database of studies that test the effectiveness of actions to conserve marine and freshwater mammals, we investigated the gaps and biases in the available scientific evidence base.
With over 21% of reptile species threatened with extinction, we urgently need to ensure conservation actions to protect and restore populations are informed by relevant, reliable evidence. Here we examine the geographic and taxonomic distribution of 707 studies synthesised in Conservation Evidence’s Reptile Conservation synopsis testing the effects of actions to conserve reptiles.
Language matters in shaping perceptions and guiding behaviour. The term stakeholder is widely used, yet little attention is paid to the possibility that its use may inadvertently perpetuate colonial narratives and reinforce systemic inequities. In this article, we critically examine the limitations of the stakeholder concept and its ambiguity, normativity, and exclusionary implications. We emphasise the importance of using language that gives a voice to marginalised groups, promotes inclusion and equity, and fosters meaningful and reflexive participation in decision-making processes.
How exactly bringing nature into decision-making can be achieved across sectors and at scale remains a major challenge. However, there has been substantial progress in developing successful demonstrations of integrating nature into decision-making in a variety of sectors and regions, and an increasing number of approaches to the challenge of scale.
In this thematic issue, we examine some of the challenges and most promising solutions for bringing nature into decision-making at scale, highlighting successful demonstrations and cases in a variety of sectors.
Global change research has largely focused on the effects of drought on forest dynamics while the importance of excessive rainfall that can cause waterlogged soils has largely been assessed in riparian zones or seasonally flooded sites. However, increased rainfall may also cause decreased growth and survival of tree species in lowland aseasonal tropical forests due to increased risk from potentially more extensive and frequent waterlogged soils. We used a Bayesian modelling approach on a tree dynamics dataset from 2004 to 2017 to test the concomitant effects of rainfall excess and deficit and dry period length on tree growth and survival across a network of experimentally planted trees in a primary aseasonal forest in Malaysia.
Tropical forests cover large areas of equatorial Africa and play a substantial role in the global carbon cycle. However, there has been a lack of biometric measurements to understand the forests’ gross and net primary productivity (GPP, NPP) and their allocation. Here we present a detailed field assessment of the carbon budget of multiple forest sites in Africa, by monitoring 14 one-hectare plots along an aridity gradient in Ghana, West Africa. When compared with an equivalent aridity gradient in Amazonia, the studied West African forests generally had higher productivity and lower carbon use efficiency (CUE).
Fungal conservation is gaining momentum globally, but many challenges remain. To advance further, more data are needed on fungal diversity across space and time. Fundamental information regarding population sizes, trends, and geographic ranges is also critical to accurately assess the extinction risk of individual species. However, obtaining these data is particularly difficult for fungi due to their immense diversity, complex and problematic taxonomy, and cryptic nature. This paper explores how citizen science (CS) projects can be leveraged to advance fungal conservation efforts.
Leaf litter decomposition is a major component of nutrient cycling which depends on the quality and quantity of the leaf material. Ash trees (Fraxinus excelsior, decay time ∼ 0.4 years) are declining throughout Europe due to a fungal pathogen (Hymenoscyphus fraxineus), which is likely to alter biochemical cycling across the continent. The ecological impact of losing species with fast decomposing leaves is not well quantified. In this study we examine how decomposition of three leaf species with varying decomposition rates including ash, sycamore (Acer pseudoplatanus, decay time ∼ 1.4 years), and beech (Fagus sylvatica, decay time ∼ 6.8 years) differ in habitats with and without ash as the dominant overstorey species
UK parliamentary research recognises rewilding as an opportunity to fulfil national habitat restoration commitments. Nevertheless, there is a current lack of analysis concerning the policy landscape in Britain. To address this gap, we employ qualitative document analysis to assess how rewilding features in national policy documents in Britain.