{"title":"Risk assessment of habitat suitability decline for the endangered riparian tree Pterocarya tonkinensis (Juglandaceae): conservation implications","authors":"","doi":"10.1007/s10342-024-01679-9","DOIUrl":null,"url":null,"abstract":"<h3>Abstract</h3> <p>Tonkin wingnut is the rarest species within the relict tree genus <em>Pterocarya</em> (Juglandaceae), known from only a few isolated stands in the Indo-Burman hotspot. Despite its classification as a vulnerable species, <em>Pterocarya tonkinensis</em> has received comparatively less attention than other wingnut species, leading to a limited understanding of its distribution patterns. In this study, we utilize spatial distribution modeling with MAXENT software and conservation prioritization methods implemented in ZONATION to estimate the potential range of species, identify the key environmental variables influencing its habitat, and designate potential areas for conservation. We used a set of 45 known species populations, the set of bioclimatic variables, and the proximity of watercourses to create the model of the potential range. The results indicate two main centers of potential climatically suitable areas for the species in the future - in southern Yunnan (China) and Vietnam. The calculated total suitable area (292,365.67 km<sup>2</sup>) is similar to the estimated extent of species occurrence but may decline in the future. Highly suitable areas near the rivers cover around 19,000 km<sup>2</sup>. The most important factors shaping species occurrence were those related to temperature amplitude (around 60% of contribution to the models). The seasonality of precipitation and distance from watercourses also have a significant impact. Assessment of potential reserves has identified the need for protected areas in southern China and points to the possibility of expanding reserves in Vietnam. The fact that river valleys are often densely populated can be an obstacle to the conservation of species.</p>","PeriodicalId":11996,"journal":{"name":"European Journal of Forest Research","volume":"28 1","pages":""},"PeriodicalIF":2.6000,"publicationDate":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"European Journal of Forest Research","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1007/s10342-024-01679-9","RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"FORESTRY","Score":null,"Total":0}
引用次数: 0
Abstract
Tonkin wingnut is the rarest species within the relict tree genus Pterocarya (Juglandaceae), known from only a few isolated stands in the Indo-Burman hotspot. Despite its classification as a vulnerable species, Pterocarya tonkinensis has received comparatively less attention than other wingnut species, leading to a limited understanding of its distribution patterns. In this study, we utilize spatial distribution modeling with MAXENT software and conservation prioritization methods implemented in ZONATION to estimate the potential range of species, identify the key environmental variables influencing its habitat, and designate potential areas for conservation. We used a set of 45 known species populations, the set of bioclimatic variables, and the proximity of watercourses to create the model of the potential range. The results indicate two main centers of potential climatically suitable areas for the species in the future - in southern Yunnan (China) and Vietnam. The calculated total suitable area (292,365.67 km2) is similar to the estimated extent of species occurrence but may decline in the future. Highly suitable areas near the rivers cover around 19,000 km2. The most important factors shaping species occurrence were those related to temperature amplitude (around 60% of contribution to the models). The seasonality of precipitation and distance from watercourses also have a significant impact. Assessment of potential reserves has identified the need for protected areas in southern China and points to the possibility of expanding reserves in Vietnam. The fact that river valleys are often densely populated can be an obstacle to the conservation of species.
期刊介绍：
The European Journal of Forest Research focuses on publishing innovative results of empirical or model-oriented studies which contribute to the development of broad principles underlying forest ecosystems, their functions and services.
Papers which exclusively report methods, models, techniques or case studies are beyond the scope of the journal, while papers on studies at the molecular or cellular level will be considered where they address the relevance of their results to the understanding of ecosystem structure and function. Papers relating to forest operations and forest engineering will be considered if they are tailored within a forest ecosystem context.
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