Tree rings of Terminalia catappa Linn. and climate variability in a tropical South American estuary

IF 5.6 1区 农林科学 Q1 AGRONOMY
Renata Cristina Bovi , Daigard Ricardo Ortega_Rodriguez , Bruna Hornink , Gabriela Morais Olmedo , Gabriel Assis-Pereira , Mario Tomazello-Filho , Miguel Cooper , Angelo Fraga Bernardino , Tiago Osório Ferreira
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引用次数: 0

Abstract

Given the prevailing uncertainties surrounding regional climate variability in southeastern Brazil, it is necessary to explore proxy records. The present dendrochronological study investigates the climate variations in the Neotropical estuarine system of the Rio Doce basin based on tree-rings records of 40 trees of Terminalia catappa Linn. The study demonstrates that annual growth rings of the species record the variations in regional precipitation, streamflow of the Rio Doce basin and surface temperature of the south Atlantic ocean. The variation in the South Atlantic Ocean Dipole Index (SAODI) directly affects precipitation and indirectly influences growth ring increment. The strong synchrony among the trees highlights the marked effect of precipitation seasonality regulated by SAODI. The trees exhibit robust growth during the dry period when Rio Doce's rains and streamflow decrease, emphasizing the potential of this chronology for climate and hydrological monitoring. The chronology of T. catappa, despite being short, is the first to provide information on the climate variability of a South America estuary ecosystem. Future studies should verify the influences of precipitation and SAODI on the growth of long-lived species aiming climate reconstructions in the region.

南美洲热带河口的林木年轮和气候变异性
鉴于巴西东南部地区气候变异性的普遍不确定性,有必要探索代用记录。本项树木年代学研究根据 40 棵林氏枞树的年轮记录,对里约多塞河流域新热带河口系统的气候变异进行了调查。研究表明,该树种的年轮记录了区域降水量、Rio Doce 盆地的溪流和南大西洋表面温度的变化。南大西洋偶极子指数(SAODI)的变化直接影响降水量,并间接影响生长年轮的增量。树木之间很强的同步性突出表明了受南大西洋偶极子指数调节的降水季节性的显著影响。在 Rio Doce 降雨量和溪流减少的干旱期,树木表现出强劲的生长势头,突出了该年代学在气候和水文监测方面的潜力。尽管 T. catappa 的年表很短,但它首次提供了有关南美洲河口生态系统气候变异的信息。未来的研究应验证降水和 SAODI 对长寿物种生长的影响,以重建该地区的气候。
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来源期刊
CiteScore
10.30
自引率
9.70%
发文量
415
审稿时长
69 days
期刊介绍: Agricultural and Forest Meteorology is an international journal for the publication of original articles and reviews on the inter-relationship between meteorology, agriculture, forestry, and natural ecosystems. Emphasis is on basic and applied scientific research relevant to practical problems in the field of plant and soil sciences, ecology and biogeochemistry as affected by weather as well as climate variability and change. Theoretical models should be tested against experimental data. Articles must appeal to an international audience. Special issues devoted to single topics are also published. Typical topics include canopy micrometeorology (e.g. canopy radiation transfer, turbulence near the ground, evapotranspiration, energy balance, fluxes of trace gases), micrometeorological instrumentation (e.g., sensors for trace gases, flux measurement instruments, radiation measurement techniques), aerobiology (e.g. the dispersion of pollen, spores, insects and pesticides), biometeorology (e.g. the effect of weather and climate on plant distribution, crop yield, water-use efficiency, and plant phenology), forest-fire/weather interactions, and feedbacks from vegetation to weather and the climate system.
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