Forest red ant

Forest red ant is an aggressive insect predator used in European forest management as part of a deliberately assembled community of natural allies. The book contrasts its cultivation and establishment in forests with broad, indiscriminate spraying: colonies are introduced and protected, while birds, bats, and owls contribute complementary forms of control. Its example makes forest care a sustained ecological practice, not a single chemical intervention.

Species and Forest Role

The account identifies Forest red ant as a predator employed in European forests and notes a significant geographic limit: the species does not occur in North America. Its role in the forest is practical rather than ornamental. The ants help check harmful insects, while their presence becomes part of a wider effort to protect trees and reforested areas. The book’s emphasis falls not on a stand-alone biological agent, but on a predator situated within relationships among trees, birds, and other animals.

This approach matters in the book’s larger contrast between chemical control and biological methods. A spray may affect organisms beyond its target; forest red ants, by comparison, are introduced as one element of an ecological arrangement. Their value is described through what they do alongside other species, and through the work required to establish and maintain colonies. The method therefore depends on knowledge of the forest’s living connections as well as on the predator itself.

Cultivation and Establishment

About twenty-five years before the account was written, Karl Gösswald of the University of Würzburg developed a method for cultivating Forest red ants and establishing colonies. Under his direction, more than 10,000 colonies were established in approximately 90 test areas in the German Federal Republic. These figures show a program developed beyond a handful of demonstration nests: the method was applied at substantial scale across multiple testing sites.

Gösswald’s approach was subsequently adopted in Italy and other countries. Ant farms were established to supply colonies for distribution in forests, turning cultivation into a practical link between research and field use. Rather than relying on a naturally occurring local population to expand unaided, managers could raise colonies and place them where forest protection was sought. In the Apennines, several hundred nests were set out to protect reforested areas, bringing the approach directly into landscapes undergoing renewed tree growth.

A Community of Forest Protection

Heinz Ruppertshofen, a forestry officer in Mölln, described the advantage of combining the protection offered by birds and ants with that of bats and owls. In his account, biological equilibrium had already been substantially improved where those forms of protection could be brought together. His observation makes the central principle clear: a single introduced predator or parasite is less effective than an array of the trees’ natural companions.

That principle distinguishes the method from a narrow, one-agent solution. Birds and ants do not perform identical work, and the addition of bats and owls broadens the community involved in forest protection. The goal is not simply to substitute one predator for a pesticide, but to strengthen several existing or introduced relationships at once. In the book’s presentation, the forest becomes more resilient through cooperation among species rather than dependence on one control measure.

Safeguarding the Colonies

The introduced colonies themselves require protection. In the forests at Mölln, wire netting was placed around new ant colonies to reduce the toll taken by woodpeckers. The protective measure recognizes a tension within the system: woodpeckers prey on the ants, yet they also help protect trees by picking harmful caterpillars from them. The birds are neither treated as enemies to be eliminated nor as harmless allies; their relationship to the colonies must be managed without discarding their wider contribution.

The reported results illustrate this balance. In some test areas, woodpecker populations had increased by 400 percent in ten years. Even with that increase, the netting prevented them from seriously reducing the ant colonies, while the birds continued to repay what they took by removing harmful caterpillars from trees. Protection of the ants thus did not require suppressing the woodpeckers’ beneficial activity; it involved limiting losses while preserving the birds’ place in the broader arrangement.

Local Work and Significance

Care for ant colonies and birds’ nesting boxes was taken up in part by a youth corps drawn from local schools. The participating children were between ten and fourteen years old. Their role connected forest management to regular, practical stewardship: maintaining the structures and colonies on which the biological-control program depended. The work was described as exceedingly low in cost, while its benefits were substantial, a contrast that presents sustained care as a viable alternative to expensive and destructive intervention.

Forest red ant therefore represents more than a useful insect. Its cultivation, distribution, protection, and integration with other forest species form a management method based on ecological relationships and continuing attention. The examples from Germany and Italy show how colonies could be established at scale; the Mölln account shows how their protection could be reconciled with the work of woodpeckers and supported by local labor. The species’ significance lies in this network of practices: forest protection is achieved not by treating nature as a target for a single decisive attack, but by fostering a community of organisms whose contributions can reinforce one another.