What to expect from restored Cerrado grasslands? Indicators and reference values from pristine ecosystems

Restoration Ecology, Год журнала: 2025, Номер unknown

Опубликована: Фев. 20, 2025

Open ecosystems are disappearing worldwide, requiring urgent restoration efforts. However, limited knowledge of their structure and composition hinders the assessment success. We aimed to establish reference values for plant community attributes in undisturbed native grasslands guide restoration. In an unprecedented data collection, we sampled 14 remnants under different climate, soil, fire regimes, representing a broad portion Brazilian savanna (except least converted northern). assessed composition, richness at scales, ground cover by functional groups, aboveground biomass. From 794 species recorded, half were unique occurrences, few present over 70% areas. Richness ranged from 9 22 species/m 2 53 130 30 m . Grasses (22–80%) non‐grasses (9–45%) did not entirely, leaving 4–56% exposed. Biomass 57 715 g/m Because is variable, finding “reference set” whole Cerrado possible. Regional subsets key guilds recommended instead. The number good proxy diversity, species/30 total richness. unreliable indicator due natural range independent integrity. maximum biomass, however, should never be surpassed. Structural targets include grasses, non‐grasses, bare soil within range, but achieving pristine may unrealistic most cases. Strong efforts focus on conservation rather than restoration, once recovering all reference's difficult.

Язык: Английский

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Mixing Green Manure With Native Seeds in the Same Row Enhances Species Establishment in Restoration Areas of the Brazilian Cerrado

Applied Vegetation Science, Год журнала: 2025, Номер 28(1)

Опубликована: Янв. 1, 2025

ABSTRACT Aims This study investigates the effectiveness of different spatial arrangements green manure and native species in promoting seedling emergence reducing invasive grass cover restoration efforts, particularly within agricultural landscapes. Location Cerrado biome (savanna), Brazil. Methods We tested four experimental setups by direct seeding: (1) only (control), (2) mixed same row ( N + GM [mixture]), (3) planted separate rows [rows]), (4) intercropped with wider strips [strips]). evaluated richness, abundance, cover, cost‐effectiveness 540 days (a year a half) post planting. Results The (mixture) treatment yielded best cost‐effectiveness, highest richness (three species) abundance (10,267 individuals/ha), along lowest (50%). Hymenaea stigonocarpa Mart. ex Hayne Astronium fraxinifolium Schott Spreng had rates across all treatments. However, alone did not entirely prevent grass, requiring further weed control. (rows) showed cost, but should be considered ongoing maintenance. Conclusions Mixing [mixture]) is practical cost‐effective method for increasing early stages restoration, settings, where mechanized planting feasible.

Язык: Английский

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Making the most of native seeds: Management techniques interact with seed and seedling traits for enhancing direct seeding success

Forest Ecology and Management, Год журнала: 2024, Номер 574, С. 122353 - 122353

Опубликована: Ноя. 5, 2024

Язык: Английский

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