Relationship between niche breadth and range shifts of Rhinopoma muscatellum (Chiroptera:Rhinopomati

来源 :山地科学学报(英文版) | 被引量 : 0次 | 上传用户:dffg21f
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Rapid climate change has provided the opportunity for many species to learn to adapt fast enough to modify their range distribution.The positive and negative responses of the species in terms of distribution are related to parameters such as kind of species,degree of specialization,size and movement skills,and such factors.Moving to high elevations and transitions to higher latitudes are among the strategies proposed as a solution to the negative effects of climate change.Therefore,predicting how different species respond to climate change can help predict the conservation program for them.Species distribution models (SDMs) are widely used to predict the geographical distribution of habitat suitability and species occurrence.Rhinopoma muscatellum is one of the three mouse-tailed bats (Rhinopomatidae) inhabiting the southeastern,southern,and southwestern parts of Iran and its distribution range to the interior and northern parts of Iran has been limited by the Elburz and Zagros Mountain.To study the effect of climate change on this species,range shifts and coverage of protected regions,74 presence points and environmental variables (climate,topography,anthropogenic,and vegetation) in MaxEnt software were used.Before the implementation of the model,the autocorrelation of the presence points was reduced and the selection of pseudo absent points was limited by using the bias grid.Climate variables were prepared for Mid-Holocene,Current,Climate Current,and Future scenarios in 2070 (RCP2.6,RCP4.5,RCP6,and RCP8.5).In order to evaluate the overlap of ecological niche,the Schoener\'s D and I statistic metrics were used.Also,to measure the breadth of the niches,B1 (inverse concentration) and B2(uncertainty) metrics in ENMTOOLS software were employed.TSS statistics were used as a threshold.Species distribution trend changes in climatic scenarios were performed by the Mann Kendall (MK)test.Based on the results,the AUC values for current and future climate models were calculated to be 0.89 and 0.85,respectively.The distance from settlement,soil organic carbon,and altitude variables have the greatest impact on the current distribution of the species;and among the climatic variables,Isothermality (Bi03),Temperature Seasonality (Bi04),and Max Temperature of Warmest Month (Bi05) had the greatest impact on species distribution.The results showed that in climate change scenarios by 2070,the distribution range and breadth of climatic niche of Rhinopoma muscatellum will be significantly increased (P-value <0.05),habitat fragmentation will be reduced,and in RCP8.5 scenario it will reach the maximum distribution (39.38% of total Iran).This increase will cover the Elburz and Zagros mountain ranges,and a large part of the country will be suitable for the species.In response to current climate change,migration to higher latitudes was identified in this study.Among the main different classes of protected regions in Iran (National parks,Wildlife refuges,and Protected areas),protected areas in all scenarios had the most coverage of the suitable species habitat.
其他文献
Alpine mountain ecosystem shows strong interactions between abiotic and biotic parameters.They also receive high attention from human activities(natural tourism,trekking,skiing,etc.).However,as the potential disturbance risk areas in alpine mountains are
Air temperature in the European Alps shows warming over recent decades at an average rate of 0.3℃/10 years,thereby outpacing the global warming rate of 0.2℃/10 years.The periglacial environment of the Alps is particularly important for several aspects(i.e
Soil water content(SWC)plays a crucial role in simulating hydrological process,guiding reforestation and controlling soil erosion in mountainous regions.Spatial-temporal variability of SWC increases the difficulty of quantifying SWC pattern in the predict
Nitrogen retention within a watershed reduces the amount of N exported to the ocean;however,it worsens environmental problems,including surface water eutrophication,aquifer pollution,acid rain,and soil acidification.Here,we adopted the Soil and Water Asse
考虑到不同类型电源的出力特性及其之间的互补性和矛盾性,以系统成本最低、污染排放最少和清洁能源利用率最大为目标,建立了风电接入的水火风储联合发电系统的多目标优化调度模型,并将蒙特卡洛模拟与遗传算法结合,采用改进的39节点系统验证了所建立模型的有效性,水电和储能系统在不同情况下都能充分发挥其调节作用,平抑风电波动,并且减少了污染排放和弃风现象,较好地实现了各类资源的优化配置.
Soil shrinkage is an important factor in slope destabilization in granitic areas,which is also one of the most important conditions for the formation of permanent gullies.This study explored the effect of soil shrinkage on permanent gullies,and Benggang e
Rosa arabica Crép.is a perennial shrub belonging to the family Rosaceae.It is endemic to the high mountain area of St.Catherine Protected Area(SCPA)in southern Sinai,Egypt,and is listed as one of the most 100 threatened plants in the world.Recently,it has
为了解决现有激光打标系统出现的异形打标困难、字符图形不清晰、模糊等问题,搭建了一套多异形三维激光打标系统,此系统由硬件和软件组成.硬件部分在平面打标平台基础上引入分段扩展轴、旋转扩展轴,利用红外对焦定位系统,实现三轴联动打标;软件部分针对激光打标机无法在大幅面、异形等工件上自动打标雕刻的缺陷,设计了一种改进的标刻处理软件,并融合多电机控制实现平面与斜面一次性正焦和离焦打标功能.本系统可以实现斜面、段差、圆柱、圆锥、球面以及拉伸曲面等多种3D打标模式的功能.实验测试结果表明,该系统在多种异形工件上实现了无误
Biocrusts affect soil detachment through above-ground(top crust\'s surface covering)and below-ground(sub-crust\'s binding and bonding,B&B)effects,which might vary with biocrust development or coverage.However,these effects in humid climates are still
前陆盆地以蕴藏构造油气藏为主,岩性地层油气藏在以往被认为难以形成规模资源量.以库车坳陷东部中生界为例,在大量露头、钻井、地震和测井资料叠合分析的基础上,分析出吐格尔明大型背斜构造为古新世和上新世继承性基底冲断作用的产物,其变形主压应力场的方位为NNE--SSW向;依奇克里克背斜构造为基底卷入的冲断构造,其褶皱南翼相对简单,为迪北斜坡带,北翼呈低角度北倾,变形主压应力场的方位为NNW--SSE向.库车坳陷东部中—下侏罗统和上三叠统发育巨厚层煤系腐殖型和暗色泥岩腐泥型烃源岩,沉积中心分布在库车河地区、迪北地区