Ecosystem Services and Their Environmental Impact
| Ecosystem Service | Environmental Role | When Degraded (Environmental Impact) |
| Water purification | Wetlands, forests, and soil filter pollutants from freshwater | Water pollution, eutrophication, increased treatment needs |
| Pollination | Insects (bees, butterflies), birds, bats fertilize plants/crops | Crop yield declines, biodiversity loss, monoculture dependency |
| Rainfall pattern regulation | Forests and land cover influence cloud formation & precipitation | Droughts, floods, climate volatility, disrupted hydrological cycles |
Each of these services is being degraded globally due to land use change, pollution, biodiversity loss, and climate change — creating systemic environmental risks.
How This Translates to ESG Risks for Fund Portfolios
These environmental impacts pose material financial and ESG risks to portfolio companies — especially in sectors like agriculture, water-intensive industry, real estate, and infrastructure.
| Impact Area | Financial/ESG Risk for Portfolios |
| Water purification loss | Companies may face rising water treatment costs, reputational/legal risks (e.g., pollution fines) |
| Pollination decline | Agriculture firms face yield risk → revenue loss → food price volatility |
| Rainfall disruption | Real estate, energy, and infrastructure exposed to physical climate risk (droughts, floods) |
Examples:
- Agricultural ETFs heavily exposed to monoculture crops may underperform if pollinator-dependent yields fall.
- REITs holding real assets in regions with collapsing rainfall patterns may face asset devaluation due to flood/drought risk.
- Food & beverage companies may see margins shrink from water scarcity or purification cost increases.
How Our ESG Fund Managers Respond
1. Prepare: Governance and Strategy Setup
- Establish a governance framework for nature-related risks.
- Define scope and boundaries (e.g., portfolio-wide? asset-class specific?).
- Align with enterprise risk management or sustainability strategy.
- Understand Taskforce on Nature‑related Financial Disclosures (TNFD)’s LEAP approach: Locate, Evaluate, Assess, Prepare.
Output: A clear policy and risk governance framework for nature-related factors.
2. Assess Materiality with ENCORE Tool
This is the core technical step where we:
- Identify which ecosystem services our portfolio depends on
- Quantify sector-specific risks due to nature loss (physical, transition, systemic)
3. Integrate and Optimize Portfolio
We can now:
A. Identify Portfolio Holdings in These Sectors
- Look for companies classified under NAICS/SIC codes related to these sectors (e.g., Monsanto/Bayer for crops, Coca-Cola for beverages).
B. Evaluate Nature Risk Materiality
- Holdings in crop production → high pollination risk
- Holdings in beverage production → high water purification risk
C. Adjust Strategy
- Risk-adjusted asset allocation: Reduce exposure to high-risk sectors (e.g., intensive agriculture near biodiversity hotspots).
- Thematic investments: Increase exposure to companies enabling nature-positive outcomes (e.g., regenerative agriculture, freshwater tech).
- Active ownership: Engage on nature‑risk disclosure and governance
- Use frameworks like TNFD to ask: Does the company disclose natural‑capital dependencies, governance oversight, materiality assessments related to nature?
- If disclosure is weak, factor a “transparency risk” into valuation.
- Exclusion/tilting: Divest from companies not aligned with Science-Based Targets for Nature (SBTN)/TNFD-aligned pathways.
- Monitor and engage continuously
- Nature‑risk is dynamic (rainfall patterns, biodiversity trends, regulation).
- Monitor new disclosure, regulatory changes (e.g., EU nature‑regulation), and revise portfolio exposures accordingly.
4. Set Science-Based Targets for Nature
Once material impacts are identified, SBTN helps translate this into measurable nature-positive targets.
Key Actions:
- Assess “pressures” (deforestation, water use, pollution) of holdings.
- Screen and prioritize locations with high biodiversity or water stress.
- Use SBTN’s 5-step process:
- Assess environmental impacts
- Interpret what targets are needed
- Prioritize locations/assets
- Measure baselines and trends
- Set & disclose targets
SBTN is evolving to integrate with TNFD — and can help align portfolios with planetary boundaries.
Output: Sector/location-specific targets (e.g., “No deforestation exposure by 2030”, “30% of portfolio aligned with nature-positive goals”).
5. Disclose under TNFD Recommendations
Structure reporting under the four TNFD pillars:
| TNFD Pillar | Example Content |
| Governance | Board oversight of nature risk, decision-making structure |
| Strategy | How nature risks/opportunities affect investment outlooks |
| Risk Management | Risk identification, ENCORE assessments, mitigation strategies |
| Metrics & Targets | Nature-related KPIs (e.g., % revenue from nature-positive assets) |
TNFD encourages disclosure alongside TCFD to enable investors to see the full picture of climate and nature-related risks.
Output: A TNFD-aligned nature disclosure — useful for LPs, regulators, and ESG scoring.
Case Study: Farm and Food‑Value Chain Exposure
Suppose our ESG‑branded global equity strategy holds a meaningful position in a major global food producer.
That food producer depends on ecosystem services such as pollination (for crops), stable rainfall (for irrigation), and clean/available water (for processing, supply chain).
Meanwhile, that company is located (or sources from) regions under increasing water‑stress, biodiversity loss (pollinator decline) and changing rainfall patterns.
Materiality and Nature‑Risk Pathway
- Pollination risk: If pollinator populations decline, crop yields drop → cost increases / margin pressure.
- Water purification / availability risk: If upstream water becomes scarcer or more polluted, operational costs rise (treatment, sourcing) or production may be disrupted.
- Rainfall pattern regulation risk: If normal rainfall regimes shift (droughts/floods), crop reliability suffers → supply‑chain risk, revenue volatility.
Portfolio Impact
- The fund may be exposed to this company and thereby to nature‑risks that are not fully captured in conventional ESG screens (which may focus on e.g., carbon, governance, labor).
- If the nature‑risks materialize (e.g., widespread crop failure, water contamination event, supply‑chain disruption), the company may suffer operational/financial stress, which in turn could drag on fund performance.
- Furthermore, if the issuer’s disclosures do not adequately reflect these dependencies (i.e., “pollinator risk”, “ecosystem service dependency”), the risk may be under‑priced and under‑recognized.