Biodiversity

Effects of different management regimes on mangrove ecosystem services in Java, Indonesia

Background

Indonesia’s mangrove forests have decreased from 4.5 million hectares (ha) to under 3 million ha since the 1980s, largely due to the lack of monetary value attributed to mangrove ecosystem services, leading to conversion into aquaculture. Developing a valuation system for mangroves that includes both economically valuable products (i.e., timber, food) and ecosystem services allows decision makers to better assess the impacts of management decisions on the important ecosystem services and properties provided by mangroves.

Open access copy available

Afforestation and Reforestation Have Varying Biodiversity Impacts Across and Within Biomes

Background

Afforestation and reforestation (AR) are widely promoted as nature-based solutions (NbS) for carbon dioxide removal and climate mitigation. Global initiatives aim to expand forest cover significantly to meet climate targets. However, AR can produce unintended biodiversity impacts, particularly when implemented in ecosystems such as grasslands or savannas, where native species are not adapted to forest conditions. The ecological outcomes of AR vary across biomes and species, highlighting the need for spatially explicit, biodiversity-sensitive planning frameworks.

Open access copy available

Tipping Points of Amazonian Forests: Beyond Myths and Toward Solutions

Background

Open access copy available

Forest carbon in Amazonia: the unrecognized contribution of indigenous territories and protected natural areas

Background

Amazonia stores an estimated 80–120 Pg of aboveground carbon, and changes in this stock have global climate implications. Indigenous territories (ITs) and protected natural areas (PNAs) together cover roughly one-third to one-half of the Amazon region, yet their specific contribution to maintaining forest carbon has often been overlooked in regional mitigation discussions. Quantifying their role is important for designing REDD+, climate finance, and land rights policies that reflect on-the-ground conservation performance.

Open access copy available

Ecosystem Services of Mangroves: A Systematic Review and Synthesis of Contemporary Scientific Literature

Background

Mangroves provide many ecosystem services, such as breeding grounds for aquatic organisms, sediment accumulation sites, coastal protection, nutrient cycling, and carbon sequestration. Beyond ecological functions, mangroves also sustain coastal livelihoods by providing natural resources and contributing to local economies. However, anthropogenic pressures from coastal development, agriculture, and aquaculture degrade mangrove ecosystems and the important ecosystem services they provide. Therefore, it is important to quantify and describe mangrove ecosystem services to better inform coastal policymakers and managers interested in mangrove conservation.

Open access copy available

A meta-analysis of the ecological and economic outcomes of mangrove restoration

Background

Mangrove forests provide many ecosystem services to local and global communities that are both ecologically and economically important. Global mangrove loss and degradation decrease the provision of ecosystem services; however, mangrove restoration projects can reverse these effects and support critical ecosystem services. Therefore, syntheses of different restoration project outcomes are necessary to encourage global political support and investment into preserving mangroves and their vital ecosystem services.

Open access copy available

The construction of biodiversity in conservation policy discourse: A multiscalar analysis

Background

Open access copy available

Enhancing climate change mitigation in protected areas

Background

Protected areas (PAs) cover roughly 15–17% of the Earth’s land surface and contain a large share of remaining intact ecosystems, many of which store high densities of carbon. With global terrestrial ecosystems absorbing about 3 GtC yr⁻¹, understanding how much of this sink is associated with PAs is important for integrating biodiversity and climate strategies. However, evidence on PA effectiveness for carbon protection, across thousands of sites and multiple biomes, is dispersed and unevenly synthesized.

Open access copy available

Don’t judge species on their origins

Background

This commentary suggests that the long-standing “native versus non-native species” debate has created a widespread bias in conservation as it encourages the idea that introduced species are inherently harmful, despite limited quantitative evidence supporting broad claims of catastrophic biodiversity loss. As global changes (such as climate change, nitrogen eutrophication, increased urbanization, and other land-use changes) cause ecosystems to be unable to restore to their historical states, categorizing species based on their origin increasingly mismatches ecological reality, influencing policy, funding, and management priorities.

Open access copy available

Valuing natural capital and ecosystem services toward the goals of efficiency, fairness, and sustainability

Background

Natural capital (NC) and ecosystem services (ES) are fundamental to sustaining human life, but valuing them requires a whole-system understanding of the interdependencies between humans and nature. Conventional economic valuation, based solely on individual willingness-to-pay, is too narrow for this complex task.

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