Linking soil biodiversity and ecosystem function in a Neotropical savanna
نویسندگان
چکیده
Conserving the remaining savanna ecosystems in Brazilian (Cerrado) — a global biodiversity hotspot that stores carbon and provides water to large portion of South America requires understanding ecological processes maintaining their function. Nutrient cycling supports function via plant litter production decomposition by soil fauna, releasing nutrients for organism uptake. Soil biogeochemistry linkages with dynamics Neotropical savannas under changing climate are poorly understood. Here, we combined two years rainfall seasonality, leaf wood epigeic fauna abundance number ground-surface dwelling invertebrates collected through pitfall traps taxa richness, Shannon's diversity Pielou's evenness, 16 biogeochemical variables measured 12 plots preserved savanna. Rainfall seasonality modulated mean evenness across all plots, which were highest rainy season, contrast litterfall rates, peaked dry season. In season (April September), Formicidae family was most abundant 50% individuals, while (October March), Isoptera order approximately 39% individuals. Wood grouped annual Hemiptera abundance, co-varying per plot against fertility variables. Leaf co-varied total pH. We speculate specific need decompose may be associated greater than an fauna. Our work highlights role on physicochemistry, is also tightly linked decomposition. This study advances our mechanisms governing nutrient nutrient-impoverished soils, implications achieving sustainable conservation restoration goals.
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ژورنال
عنوان ژورنال: Applied Soil Ecology
سال: 2022
ISSN: ['1873-0272', '0929-1393']
DOI: https://doi.org/10.1016/j.apsoil.2021.104209