How does biodiversity loss affect long-term sustainable food production?
Biodiversity loss directly threatens long-term food production by eroding the ecosystem services that crops depend on: pollination, soil fertility, nutrient cycling, and genetic resilience. As species disappear and habitats simplify, food systems become more fragile, more input-dependent, and less capable of recovering from shocks such as disease outbreaks, drought, or pest pressure. The sections below unpack each dimension of this relationship, from soil organisms to crop genetics to the farming practices that can help reverse the decline.
How does biodiversity loss reduce crop yields over time?
Biodiversity loss reduces crop yields over time by dismantling the ecological processes that support plant growth, including pollination, natural pest regulation, and soil nutrient cycling. As species richness declines, agricultural systems become more dependent on synthetic inputs to compensate, which can trigger a self-reinforcing cycle of intensification that further degrades the biological foundations of production.
Research published in Nature Ecology and Evolution identified what scientists call “intensification traps” — situations where biodiversity loss caused by heavy input use leads to yield stagnation or decline, which farmers then misread as a conventional yield gap requiring even more inputs. This misdiagnosis accelerates the very degradation driving the problem. The trap emerged in the majority of simulated agricultural landscapes studied, suggesting it is a widespread and underappreciated risk.
The long-term picture is stark. Over the twentieth century, crop genetic diversity narrowed dramatically, with a small number of high-yielding varieties replacing thousands of locally adapted ones. Today, just a handful of plant species provide the majority of global dietary calories, leaving food systems with very little biological buffer against climate variability, new pathogens, or shifting pest populations. Monoculture farming amplifies this vulnerability: planting a single genetically uniform crop across large areas removes the natural variation that allows populations to absorb and survive environmental stress.
A 2025 paper in Philosophical Transactions of the Royal Society B challenged the assumption that optimising yields alone can halt biodiversity decline, calling instead for whole-systems approaches that treat ecological integrity and agricultural productivity as inseparable goals. Managing for yield without managing for biodiversity, the research argues, is not a stable long-term strategy.
What role does soil biodiversity play in food production?
Soil biodiversity plays a foundational role in food production by driving the biological processes that make productive agriculture possible. Bacteria, fungi, nematodes, earthworms, and thousands of other organisms regulate nutrient cycling, decompose organic matter, maintain soil structure, suppress plant pathogens, and manage water flow. Without a functioning soil food web, crops cannot access the nutrients they need, regardless of how much fertiliser is applied.
A January 2026 review in Nature Reviews Biodiversity confirmed that soil organisms collectively underpin nearly every critical ecosystem function in agricultural land, including carbon sequestration, plant productivity, and biological pest control. Soil biodiversity is estimated to represent close to 60% of global biodiversity — yet it remains one of the least visible and most poorly protected dimensions of the food system.
The scale of current soil degradation in Europe reflects how far this resource has already been compromised. Between 60 and 70% of EU soils are currently classified as unhealthy, with annual soil erosion rates considerably outpacing the natural rate of soil formation. The economic cost to European society runs to tens of billions of euros each year — a figure that does not capture the longer-term loss of productive capacity.
EU-funded research through the SoildiverAgro project demonstrated that enhancing soil biodiversity through microbe-based biostimulants can reduce the need for chemical inputs, improve crop quality, decrease pest and disease pressure, and cut CO2 emissions significantly, all while maintaining yields and economic performance. Kekkilä-BVB participates in this research through Growing Media Europe, applying these insights to the development of growing media that support biological soil function in professional cultivation environments.
Sustainable soil management practices — including reduced tillage, cover cropping, organic amendments, and crop rotation — consistently promote soil biodiversity and improve long-term fertility. Conversely, excessive tillage, monocropping, and overreliance on chemical inputs are among the primary drivers of soil health decline worldwide.
Which crops are most at risk from pollinator decline?
The crops most at risk from pollinator decline are those that depend heavily on insect pollination for fruit set and yield, including blueberries, coffee, apples, cocoa, mango, and watermelon. These crops cannot self-pollinate effectively, meaning that as wild pollinator populations decline, their yields fall and their quality deteriorates, even when other growing conditions are optimal.
A large-scale 2024 study published in Nature Ecology and Evolution, covering more than 1,500 fields across six continents, found that pollinator limitation affects crop systems in a significant proportion of global agricultural land. Blueberry, coffee, and apple were the most frequently affected crops. The study also found that increasing pollinator activity to high-performing levels could close the majority of yield gaps between high- and low-yielding fields globally — a finding that underscores how much productive potential is already being lost.
Looking ahead, a 2025 study in Nature Communications modelled the consequences of a hypothetical collapse of wild pollinators in Europe by 2030. The result would be a meaningful reduction in European crop yields, cropland expansion to compensate, reduced export capacity, and rising prices for pollinator-dependent crops across global markets. Future risk is projected to be highest for cocoa, mango, watermelon, and coffee, with tropical regions — particularly sub-Saharan Africa and parts of South America — facing the greatest exposure.
The drivers of pollinator decline are well documented: habitat loss, pesticide use, pests and pathogens, pollution, and climate change. Managed bee populations can also suppress wild bee diversity when introduced at scale. Addressing pollinator risk requires managing agricultural landscapes as habitats, not just production units.
How does genetic diversity loss threaten food system resilience?
Genetic diversity loss threatens food system resilience by narrowing the biological toolkit available to crops when conditions change. When all plants in a field share the same genetic profile, a single pathogen, pest, or weather event can devastate the entire crop. Diversity within and among species acts as a natural buffer, ensuring that some individuals will survive and recover even under adverse conditions.
Over the past century, roughly three-quarters of plant genetic diversity was lost as farming shifted toward a small number of high-yielding, genetically uniform varieties. Today, nine plant species account for approximately two-thirds of global crop production, with rice, wheat, and maize alone supplying more than half of the world’s plant-derived calories. This concentration creates a structural fragility in the food system that intensifies with every additional variety that disappears from cultivation.
Historical events illustrate the consequences clearly. The 1970 Southern Corn Leaf Blight in the United States swept through genetically uniform maize crops with devastating speed precisely because there was no variation to slow the pathogen’s advance. The Irish potato famine of the 1840s followed the same logic at a larger scale. These were not isolated accidents; they were predictable outcomes of genetic uniformity.
In parts of Africa, ancient grains such as teff, millet, and sorghum — adapted over thousands of years to arid and variable conditions — are increasingly displaced by water-intensive globally dominant crops. Food sovereignty advocates have warned that losing these locally adapted varieties removes the very traits that will be most needed as climate conditions shift. Genetic diversity is not a reserve to draw on in emergencies; it is the ongoing mechanism that prevents emergencies from becoming catastrophes.
Of the thousands of known livestock breeds, nearly a quarter are currently at risk of disappearing. This narrowing of animal genetic diversity carries equivalent risks for livestock-based food production, reducing the adaptive capacity of herds to disease, heat stress, and changing feed availability.
What farming practices help reverse biodiversity loss?
Farming practices that help reverse biodiversity loss include reduced tillage, cover cropping, crop rotation, organic soil amendments, agroforestry, and diversified cropping systems. These approaches rebuild soil biology, support pollinator habitats, and reduce dependence on synthetic inputs. No single practice benefits all species equally, but combinations of these methods consistently show positive outcomes across multiple taxonomic groups.
A systematic review drawing on more than 300 studies across multiple biomes identified 35 alternative agricultural practices that benefit biodiversity, with less intensive management broadly outperforming conventional approaches. Crop diversification strategies — including intercropping, genetic diversification within fields, and temporal rotation — improve pest management, stabilise yields, and reduce the vulnerability that comes with monoculture production. Higher plant diversity disrupts pest life cycles and supports beneficial insects, creating natural defences that reduce the need for chemical intervention.
Agroforestry, which integrates trees and shrubs into farming landscapes, creates microclimates that moderate temperature and moisture extremes, protect crops from wind and water damage, and provide habitat for pollinators and other beneficial organisms. It is increasingly recognised as one of the more versatile tools available for simultaneously improving biodiversity outcomes and farm resilience.
Soil-focused interventions are particularly important given how much agricultural productivity depends on biological soil function. Biofertilisers, mycorrhizal inoculants, and biochar application have all shown potential to reverse soil degradation and restore the microbial communities that drive nutrient cycling. EU-funded research has demonstrated that these approaches can maintain or improve yields while reducing chemical input requirements.
Kekkilä-BVB’s 2030 sustainability roadmap includes a dedicated biodiversity and restoration initiative, with measurable targets for enhancing biodiversity in peat bogs and urban environments. The company’s peat bog after-life concept involves re-wetting exhausted production areas and replanting with native species — a restoration process that, in many cases, has produced higher biodiversity than existed before peat extraction began.
Can food production recover if biodiversity continues to decline?
Food production can partially recover from biodiversity loss, but recovery becomes slower, more costly, and less certain the longer decline continues. Some losses — particularly of soil biodiversity and genetic diversity — require long restoration timelines and may not be fully reversible once critical thresholds are crossed. The window for avoiding the most severe outcomes remains open, but it is narrowing.
The Global Tipping Points Report, produced by more than 160 scientists, identifies both negative and positive tipping points in food systems. On the negative side, over-intensification can push soil fertility and biodiversity into states that resist recovery for decades. On the positive side, ecosystem restoration and shifts to more considered production practices can trigger reinforcing cycles of regeneration — provided action begins before thresholds are breached.
The scientific evidence is consistent on one point: efficiency gains from intensification come at the cost of robustness. Food systems that maximise output through biodiversity-poor monocultures become increasingly fragile, vulnerable to the very shocks — disease, drought, pest outbreaks — that a more diverse system would absorb. Recovery from those shocks, once they occur, requires rebuilding the biological infrastructure that was lost, which takes far longer than it took to destroy it.
Above-ground biodiversity responds slowly to improved management practices, and full ecosystem recovery can take many years even when the right interventions are in place. Soil biology shows earlier signs of improvement, but complete restoration of soil function in severely degraded land is measured in decades, not seasons. This lag means that the costs of continued decline accumulate well beyond the point at which any individual farm or policy intervention begins to act.
The debate between land-sparing strategies — concentrating high-yield production in some areas to spare others for nature — and whole-systems approaches that integrate biodiversity goals into all agricultural land remains active and unresolved in the scientific literature. Both perspectives are represented in peer-reviewed research published in 2025, and neither offers a simple answer. What the evidence does not support is the assumption that scaling up current production models without addressing biodiversity will lead anywhere other than deeper fragility.