Mapping the habitat suitability of Ottelia species in Africa

作     者：Boniface K.Ngarega John M.Nzei Josphat K.Saina Marwa Waseem A.Halmy Jin-Ming Chen Zhi-Zhong Li Boniface K.Ngarega;John M.Nzei;Josphat K.Saina;Marwa Waseem A.Halmy;Jin-Ming Chen;Zhi-Zhong Li

作者机构：Key Laboratory of Aquatic Botany and Watershed EcologyWuhan Botanical GardenChinese Academy of SciencesWuhan430074China Center of Conservation BiologyCore Botanical GardensChinese Academy of SciencesWuhan430074China University of Chinese Academy of SciencesBeijing100049China Center for Integrative ConservationXishuangbanna Tropical Botanical GardenChinese Academy of SciencesMenglun666303China Department of Environmental SciencesFaculty of ScienceAlexandria UniversityAlexandria21511Egypt 

出 版 物：《Plant Diversity》 (植物多样性（英文版）)

年 卷 期：2022年第44卷第5期

页      面：468-480页

核心收录：

学科分类：07[理学] 0713[理学-生态学] 

基　　金：funded by the Strategic Priority Research Program of the Chinese Academy of Sciences (No.XDB 31000000) the National Natural Science Foundation of China (Nos.32070253 and 32100186) the Sino-Africa Joint Research Center (No. SAJC201322) 

主　　题：African freshwater bodies Climate change Ecological niche modeling Habitat suitability Niche overlap 

摘      要：Understanding the influence of environmental covariates on plant distribution is critical,especially for aquatic plant *** change is likely to alter the distribution of aquatic ***,knowledge of this change on the burden of aquatic macroorganisms is often fraught with ***,a model genus for studying the evolution of the aquatic family Hydrocharitaceae,is mainly distributed in slow-flowing creeks,rivers,or lakes throughout pantropical regions in the *** to recent rapid climate changes,natural Ottelia populations have declined *** modeling the effects of climate change on the distribution of Ottelia species and assessing the degree of niche similarity,we sought to identify high suitability regions and help formulate conservation *** models use known background points to determine how environmental covariates vary spatially and produce continental maps of the distribution of the Ottelia species in ***,we estimated the possible influences of the optimistic and extreme pessimistic representative concentration pathways scenarios RCP 4.5 and RCP 8.5 for the *** results show that the distinct distribution patterns of studied Ottelia species were influenced by topography(elevation)and climate(e.g.,mean temperature of driest quarter,annual precipitation,and precipitation of the driest month).While there is a lack of accord in defining the limiting factors for the distribution of Ottelia species,it is clear that water-temperature conditions have promising effects when kept within optimal *** also note that climate change will impact Ottelia by accelerating fragmentation and habitat *** assessment of niche overlap revealed that Ottelia cylindrica and *** had slightly more similar niches than the other Ottelia *** present findings identify the need to enhance conservation efforts to safeguard natural Ottelia populations and provide a theoretical basis for the distr