Portuguese environmental organization Quercus highland the serious environmental impact by Altri Florestal S.A. (former Silvicaima) forest management, namely soil erosion, lack of discontinuity on the eucalyptus monocultures and impact on protected species, illegal practices, and still it holds its certification for sustainable forest management.

According to Quercus, Altri Florestal does't comply with a responsible forest management and although Quercus contacted the company and the certification body Sativa (Soil Association Woodmark for Forest Certification), almost nothing has been done and the re-certification procedures are still ongoing.
The new reforestation projects, are based on huge areas of eucalyptus monocultures, without complying with some basic conditions, such as:
* The promotion of enormous areas of continuous soil mobilization, causing acute soil erosion;
* The plantation, in some areas, of hundreds of hectares and cultures without any discontinuity, without strips of leafy species more resistant to fire, in order to promote the protection of the forest against fires (between 20 and 50 hectares), and according to the legal norms (Portaria no. 528/88 and the Portuguese National Plan for the Prevention and Protection of Forest Against Fires);
* The cutting down of cork oak trees, protected by law, without the necessary authorizations;
* The plantation of eucalyptus on temporary water lines, on public hydric domain;
* Installation of a large barbed wired fence, to enclose the property of Galisteu, inside the International Tejo Natural Park, increasing the risk of injuries and death among the wild fauna.

Quercus considers that Altri Forestal forest management should not be certified: "despite the several warnings to the certification body Sativa, with so many evidences on Altri Florestal bad management, in flagrant violation with the FSC principles and criteria, beginning on Principle 1, compliance with the law and Principles of the FSC, intil the Principle 10 concerning plantations, Altri Florestal has been FSC re-certified by Sativa, which unveils the fragilities of the auditing procedures, as well as the lack of accuracy of the implementation of the FSC system in Portugal. We consider that the FSC Certificate to Altri Florestal should not be renewed, and even the current one should be revoked."