Human Impact on Biodiversity and Wilderness Conservation

The accelerating alteration of terrestrial and marine ecosystems by human activities has become one of the principal drivers of biodiversity loss and the erosion of wilderness. Land-use change for agriculture, urban expansion, infrastructure development and resource extraction fragments habitats, disrupts ecological connectivity and diminishes ecosystem resilience. At the same time, climate change interacts with direct pressures to amplify species declines, alter community composition and impair the provision of ecosystem services. Conservation responses have ranged from protected‐area designation and habitat restoration to sustainable land-management practices and the integration of indigenous and local knowledge. Advances in remote sensing and spatial analysis now permit fine-scale mapping of human pressures and ecosystem integrity, guiding prioritisation of conservation interventions. Despite some signs of recovery in regions with strong governance and investment in restoration, the overall trend remains one of accelerating anthropogenic encroachment on remaining intact ecosystems. A comprehensive approach that combines rigorous monitoring, policy incentives, community participation and the retention of large-scale wilderness is essential to safeguard global biodiversity and the ecological processes on which human societies depend.

Research from Nature Portfolio

Recent analyses have produced a globally consistent index of forest condition by integrating observed and inferred human pressures with measures of lost connectivity, revealing that less than half of the world’s remaining forests retain high ecosystem integrity and that even many protected areas are subject to substantial modification. Complementary work has demonstrated that spatial and temporal changes in cumulative human pressure correlate closely with shifts in extinction risk among terrestrial mammals, underscoring that conversion of low-pressure areas is a key predictor of increasing vulnerability. Foundational mapping of the human footprint over multiple decades has further shown that, while population and economic growth far outstrip increases in cumulative pressure, three-quarters of terrestrial land experiences measurable human influence, with pressures intensifying fastest in biodiversity hotspots and easing only in regions with robust governance and low levels of corruption.

Human Impact on Biodiversity and Wilderness Conservation publication trend

The graph below shows the total number of articles in human impact on biodiversity and wilderness conservation across all publications each year (not limited to Nature Index journals).

Technical terms

Human Footprint: A cumulative measure of direct and indirect human pressures on the environment, often derived from variables such as infrastructure, land cover, population density and access networks.

Ecological Integrity: The degree to which an ecosystem retains its native biodiversity, structure, functions and connectivity, reflecting minimal alteration by human activity.

Habitat Fragmentation: The process by which large, continuous habitats are subdivided into smaller, isolated remnants, compromising species movement, gene flow and ecosystem processes.

Wilderness: Areas that are free of industrial-scale human pressures and remain largely undisturbed, supporting intact ecological processes and high levels of biodiversity.

References

1. Anthropogenic modification of forests means only 40% of remaining forests have high ecosystem integrity. Nature Communications (2020).
2. Changes in human footprint drive changes in species extinction risk. Nature Communications (2018).
3. Sixteen years of change in the global terrestrial human footprint and implications for biodiversity conservation. Nature Communications (2016).
4. Mapping Industrial Influences on Earth's Ecology. Annual Review of Environment and Resources (2023).
5. A global record of annual terrestrial Human Footprint dataset from 2000 to 2018. Scientific Data (2022).
6. People have shaped most of terrestrial nature for at least 12,000 years. Proceedings of the National Academy of Sciences of the United States of America (2021).