Survey and field research team standing with monitoring equipment in a dry African landscape.

Pan-African research and action platform

Invasive species are reshaping Africa's ecosystems, farms, and livelihoods.

CISA helps people understand what invasive species are, why they matter, and how research, coordination, and practical action can reduce harm before it becomes harder to reverse.

Explore Species What CISA Does

Crop pests, invasive weeds, aquatic species, and disease vectors are affecting food systems and ecosystems across Africa.

The damage shows up in farms, rivers, biodiversity, trade systems, health risks, and household livelihoods.

CISA connects public education, research, partnerships, and response methods in one credible platform.

What CISA deals with

CISA focuses on invasive species in Africa and the damage they cause to farms, ecosystems, water bodies, biodiversity, health, and livelihoods.

Invasive species are harmful plants, pests, and other organisms that spread where they do not belong. They can reduce harvests, damage native ecosystems, block waterways, increase disease risk, and place real pressure on households and local economies.

CISA makes the issue easier to understand and easier to act on through research, public education, partnerships, and practical response guidance.

Threat

Pathways expand through trade, mobility, climate pressure, and weak surveillance coverage.

Impact

Damage appears in ecosystems, household economics, agricultural production, and institutional strain.

Response

The strongest results come from early detection, coordinated action, and durable local capacity.

Research and knowledge translation

Public education and clear communication

Partnerships and coordinated response

Practical action across affected systems

Why it matters

The impact is immediate and cumulative

The problem does not stay in one sector. It moves across food production, freshwater systems, biodiversity, public health, trade, and local livelihoods.

Ecosystems and biodiversity

Ecological disruption accumulates before recovery options narrow.

Invasive species alter habitats, displace native species, change fire regimes, degrade water systems, and weaken ecosystem services that communities rely on.

Livelihoods and food systems

Household vulnerability rises when ecological pressure becomes production pressure.

Crop pests, invasive weeds, and degraded grazing or water systems create direct economic strain for farmers, fishers, and pastoral communities.

Crop pests and crop diseases

Pest pressure quickly becomes a food security problem.

Agricultural invasions increase yield loss, raise control costs, and challenge extension systems that must support timely and practical response.

Human and animal health

Environmental change and health risk often move together.

Disease vectors and degraded ecological systems can intensify exposure risk for both people and livestock, especially where surveillance and services are limited.

Continental exposure

Over 70%

The DOCX brief frames invasive species as affecting more than 70% of the African continent, underscoring why CISA treats this as a continental readiness issue.

Economic pressure

Billions annually

Damage and management costs can run into billions each year through yield loss, ecosystem degradation, control costs, and disrupted livelihoods.

Trade risk

Market access

Fruit flies, quarantine pests, and contaminated movement pathways can restrict agricultural trade, limiting trade opportunities and increasing compliance burdens for producers and exporters.

Species library