Vulnerability of <i>Khaya senegalensis</i> Desr & Juss to climate change and to the invasion of <i>Hypsipyla robusta</i> Moore in Benin (West Africa)

Abstract

Khaya senegalensisDesr & Juss is an urban tree species with high quality wood, unfortunately disturbed by Hypsipyla robusta Moore. However, how vulnerable this species is with regard to climate change and to Hypsipyla robusta over time and space is unknown. This study aimed at assessing as well the climate change impacts on both species as the overlapping extent of their suitable areas over time and space. To this end, the MaxEnt approach for Ecological Niche Modelling was used to compute suitable areas for both species under current and future climates (Africlim RCP 4.5 and RCP 8.5). Spatio-temporal Analysis was performed using Geographic Information System. Upon 2055, climate change will impact negatively 15-16% of Benin while the positive impacts will account only for 2-3%, and the stable areas will represent 74-75%. As for Hypsipyla robusta, climate change will provide only habitat loss of about 66% of the country. So, many plantation sites are exposed to biological attack from the pest, but wouldn"t be more in future, giving hope for Khaya senegalensis' high quality wood production. Meanwhile, there will be an ecological imbalance due to the drastic potential habitat loss for the insect.

Modelling ecological niches of Sclerocarya birrea subspecies in Tanzania under the current and future climates

“…multifoliata occurs, where there are unimodal rains. Our study findings on contraction of ecological niches of S. birrea subspecies under future climates are in accordance with other studies (Djotan et al 2018;Bogawski et al 2019;Gebrewahid et al 2020) and Wani et al (2021). Despite having physiological traits that make them drought-tolerant according to Hall et al (2002) and Jinga et al (2021), the current ecological niches of the S. birrea subspecies will probably shift but are unlikely to expand under future warming climates.…”

“…The Ecological Niche Modelling (ENM) approach is widely used to map species ecology and predict the patterns of changes in biodiversity under the current and future climates (Martinez-Meyer et al 2006;Kulhanek et al 2011;Ganglo et al 2017;Djotan et al 2018;Mothes et al 2019). Among several species distribution models (Segurado et al 2004;Beaumont et al 2005;Byeon et al 2018), CLIMEX models estimate how environmental attributes and climate change influence species distribution and ecosystems.…”

Spatial distribution and impacts of climate change on Milicia excelsa in Benin, West Africa

“…Knowledge of the spatial and temporal distribution of a species is key for evaluating extinction risks and forecasting possible future threats from factors such as climate change (Pacifici et al 2015;Urban 2015;Ganglo and Kakpo 2016). Ecological niche models (ENMs) are used to understand ecological requirements of species, predict geographic distributions, select areas for conservation and forecast effects of environmental change (Peterson et al 2011;Ganglo et al 2017;Djotan et al 2018). Studies of geographic distributions of vector species using ENM techniques relate occurrence records and environmental characteristics across species distributions (Altamiranda-Saavedra et al 2017).…”

Biostimulation effects of linseed and citrus oils on growth, antioxidant enzymes activity, metabolic changes and water relations of Khaya senegalensis seedlings under drought stress

“…Is an evergreen tree, but in dry climates it can be deciduous. Its wood is considered to be hardwood with excellent commercial value [2,3]. And numerous traditional medicinal uses, such as anti-sickling, antimicrobial, anthelmintic, and malaria treatment.…”