At the same time, from an ethnoscientific standpoint, there is an array of negative, positive and mixed effects of their impacts on cultural systems.

Therefore, the wise thing is to properly studying their ecological and cultural existence as well as impacts, and then to finding out remedies.

1-      Culturally impoverishing invasive species=

They bring about the loss or replacement of culturally important native species and their associated cultural practices.

Eg. Cactus moth (Cactoblastic cactorum), a biocontrol agent on Caribbean islands, has spread to Florida where it threatens native (cactus) Opuntia spp. Scientists fear its spread to Mexico, where it would threaten >50 endangered native Opuntia spp. For Mexicans, these Opuntia spp. are significant cultural resources. They use which for/as food, fodder,  pharmaceuticals and cosmetics. 

 

2-      Culturally enriching invasive species=

They augment cultural traditions, through their inclusion in lexicons, narratives, foods, pharmacopoeias and other tangible and intangible ends.

Eg. Invasive weedy plant species are a valuable source of medicines, insecticides, cover crops and green ferilizers, livestock forage and wild-harvested foods.

 

3-      Culturally facilitating invasive species=

They help to continue and reformulate the traditional ethnobiological practices. Very useful plants are left behind in occasions of human migrations. Sometimes, these plants are re-discovered by these diaspora communities, in their newly occupied lands. 

Eg. Enslaved Africans in Brazil quickly recognized an invasive plant variety of castor bean (Ricinus comunis) and reincorporated it into their healing rituals.

Eg. The aromatic tuber of purple nutsedge (Cyperus retondus), an invasive plant of almost global dimensions, is chewed by people in Nigeria as an enchanting agent. They use it to influence others by their speech. 

 

Eg. Feral pigs are a cultural ingredient of Hawaiian cultural rituals, including social festivities like hunting parties. Yet the pig is destroying the native ecosystem including food and medical plants. It is a threat to the other elements of the native Hawaiian culture.

 

However, an understanding of the prominent category of an invasive biota (whether they are culturally enriching, facilitating, or impoverishing) may shed a light on better conserving biological and cultural diversity.