巴西东北部巴伊亚州Todos os Santos湾红树林土壤铜对螃蟹生物有效性的季节性影响

IF 2 Q3 SOIL SCIENCE

Spanish Journal of Soil Science Pub Date : 2023-08-30 DOI:10.3389/sjss.2023.11737

M. Ramos, G. N. Nóbrega, T. O. Ferreira, X. L. Otero

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引用次数: 0

摘要

在巴西东北部托多斯桑托斯湾的四个红树林地点（CP的Cacha Prego、PG的Ponta Grossa、IM的Ilha de Maré和PT的Pitinga）季节性采集螃蟹和土壤样本。土壤中的总铜含量在2.5至89.4 mg kg−1之间，而螃蟹器官（肌肉、肝胰腺和鳃）中的铜含量在20至1320 mg kg−2之间，其中Ilha de Maré种群的铜浓度最高，那里的土壤显示出明显的铜富集。总铜含量并不能解释在土壤总含量较低的皮廷加螃蟹中观察到的异常高的铜浓度。地球化学分区表明，大部分潜在的生物可利用铜存在于可氧化部分、黄铁矿和有机物中。旱季的黄铁矿氧化导致铜的生物利用度增加。这一过程与Pitinga红树林的土壤有关，在那里，硫化物氧化导致土壤酸化，并导致与最不稳定组分相关的Cu增加。

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Impact of Seasonality on Copper Bioavailaility to Crabs (Ucides cordatus, Linnaeus, 1763) in Mangrove Soils of Todos os Santos Bay (Bahia, North Eastern Brazil)

Crab and soil samples were seasonally collected at four mangrove sites (Cacha Prego, CP; Ponta Grossa, PG; Ilha de Maré, IM; and Pitinga, PT) in Todos os Santos Bay, in NE Brazil. Total Cu levels in soils ranged from 2.5 to 89.4 mg kg−1, while in crab organs (muscles, hepatopancreas, and gills), Cu ranged from 20 to 1,320 mg kg−1, with the highest concentrations found in the Ilha de Maré population, where soils showed a clear Cu enrichment. Total Cu content did not explain the abnormally high Cu concentrations observed in crabs from Pitinga, where total content in soil was low. Geochemical partitioning indicated that most of the potentially bioavailable Cu was found in the oxidizable fractions, pyrite and organic matter. Pyrite oxidation during the dry season led to increased Cu bioavailability. This process was of relevance in soils of the Pitinga mangrove, where sulfide oxidation led to soil acidification and to an increase in Cu associated with the most labile fractions.

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来源期刊

Spanish Journal of Soil Science SOIL SCIENCE-

CiteScore

2.20

自引率

0.00%

发文量

期刊介绍： The Spanish Journal of Soil Science (SJSS) is a peer-reviewed journal with open access for the publication of Soil Science research, which is published every four months. This publication welcomes works from all parts of the world and different geographic areas. It aims to publish original, innovative, and high-quality scientific papers related to field and laboratory research on all basic and applied aspects of Soil Science. The journal is also interested in interdisciplinary studies linked to soil research, short communications presenting new findings and applications, and invited state of art reviews. The journal focuses on all the different areas of Soil Science represented by the Spanish Society of Soil Science: soil genesis, morphology and micromorphology, physics, chemistry, biology, mineralogy, biochemistry and its functions, classification, survey, and soil information systems; soil fertility and plant nutrition, hydrology and geomorphology; soil evaluation and land use planning; soil protection and conservation; soil degradation and remediation; soil quality; soil-plant relationships; soils and land use change; sustainability of ecosystems; soils and environmental quality; methods of soil analysis; pedometrics; new techniques and soil education. Other fields with growing interest include: digital soil mapping, soil nanotechnology, the modelling of biological and biochemical processes, mechanisms and processes responsible for the mobilization and immobilization of nutrients, organic matter stabilization, biogeochemical nutrient cycles, the influence of climatic change on soil processes and soil-plant relationships, carbon sequestration, and the role of soils in climatic change and ecological and environmental processes.