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Relationship between the richness of tree species and edaphoclimatic characteristics of the south region of Bahia, Brazil
Austral Ecology ( IF 1.5 ) Pub Date : 2022-08-16 , DOI: 10.1111/aec.13226
Carolina Barreto Teles 1 , Luiz Fernando Silva Magnago 1, 2 , Leildo Machado Carilo Filho 3 , Daniel Piotto 1, 2
Affiliation  

The regions between the tropics provide climatic characteristics that contribute to the formation of unique vegetation typologies, the Tropical Forests. It is estimated that these forests are home to about 50 000 tree species. The Atlantic Forest, located mostly on the Brazilian coast is an example of the richness of phanerophytes inside an important hotspot for biodiversity. Understanding the relationship between these edaphoclimatic factors and the richness of tree species in the Atlantic Forest is important to establish conservation strategies in this threatened biome. Our main objective was to analyse the relationship between abiotic variables and tree species richness in the southern region of the state of Bahia, Brazil. In this sense, we used data from tree species and abiotic factors (extracted from the WorldClim and FAO platforms) in a selection of mixed generalized linear multimodels. Variables related to temperature and precipitation in the driest periods influenced the richness of tree species in the study region. Whereas temperature seasonality and minimum temperature of the coldest month influenced negatively the values for extrapolated richness the maximum temperature of the hottest month exhibited a positive influence for richness indexes. These results emphasize that the maintenance of the arboreal richness in tropical zones is directly dependent of the climatic seasonality. In the present study, we point out the importance of climatic factors for the maintenance of tree species in a region that has expressive numbers of tree species per hectare, one of the world records in this index.

中文翻译:

巴西巴伊亚南部地区树种丰富度与土壤气候特征的关系

热带地区之间的气候特征有助于形成独特的植被类型,即热带森林。据估计,这些森林是大约 50 000 种树种的家园。大西洋森林,主要位于巴西海岸,是生物多样性重要热点地区丰富的显生植物的一个例子。了解这些土壤气候因素与大西洋森林树种丰富度之间的关系对于在这个受威胁的生物群落中建立保护策略非常重要。我们的主要目标是分析巴西巴伊亚州南部地区非生物变量与树种丰富度之间的关系。在这个意义上,我们在一系列混合广义线性多模型中使用了来自树种和非生物因素的数据(从 WorldClim 和粮农组织平台中提取)。最干旱时期与温度和降水相关的变量影响了研究区域树种的丰富度。虽然温度季节性和最冷月份的最低气温对推断的丰富度值产生负面影响,但最热月份的最高气温对丰富度指数表现出积极的影响。这些结果强调,热带地区树栖丰富度的维持直接取决于气候季节性。在本研究中,我们指出了在一个每公顷树种数量众多的地区,气候因素对于维持树种的重要性,
更新日期:2022-08-16
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