Wildlife and forest management are not only compatible, but are intrinsically interconnected. Forests are the most biologically diverse ecosystems on land, and harbour most of Earth’s terrestrial biodiversity (MEA, 2005).
While implementing SFM, it is crucial to recognize that forest management has direct implications for the habitat and living conditions of wildlife. The intensity and scope of forest management activities affects vegetation distribution as well as abundance and coverage, which sometimes leads to increased fragmentation of the forest landscape and a decrease in habitat quality. This can further alter the community structure, abundance of wildlife species and their spatial distribution and behaviour. For example, by opening up the canopy and shifting much of the primary production to the understory, logging tends to simplify the vertical stratification of forest species, sometimes causing birds of the canopy layer to forage at lower levels. This shift in productivity may benefit large terrestrial browsers, like elephants and okapis in African forests, or tapirs in neotropical forests (Peres and Barlow, 2004). In temperate forests, clear cutting systems can favour roe deer which like clearings and forest edges for food and thickets for cover (Matthews, 1991).
As well, the amount of wildlife, the presence of particular species and their feeding and behavioural patterns, can greatly affect forest health. For example, when cervids (deers) experience external stress, they sometimes mark their territories by rubbing trees or stripping bark, which severely damages the forest, reduces its productivity, slows forest regeneration, all with important economic implications. Bears can strip bark with their claws to reach the newly formed wood underneath (Nolte and Dykzeul, 2000). Different species across temperate and tropical ecosystems can have different effects. Forest damage caused by wildlife leads to reduced productivity and forest regeneration and can have serious economic consequences.
On the other hand, wildlife provides a wide range of ecological services with multiple benefits for forest health and productivity. Certain wildlife species, such as gibbons, elephants, rhinoceroses, hornbills and imperial pigeons, act as dispersers of large seeds. For example, African elephants disperse more seeds of more tree species, and over greater distances, than any other animal, which makes them important for the African rainforest. Certain wildlife species can act as biological control for pests. Bats can consume as much as one-half their body weight in insects, thereby helping control the population of insects that are harmful for forest, in addition to pollinating flowers and dispersing seeds.
Wildlife must be recognized as an integral part of SFM, taking into account continued deforestation, forest fragmentation and climate change. Wildlife distribution, population levels and diversity have an impact on forest productivity, health and regeneration. The socio-economic values and functions of wildlife should be considered as part of a regional set of criteria and indicators for SFM, since wildlife issues are essential in guiding, monitoring and assessing the SFM process (FAO, 2017).