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Rocha FI, Ribeiro TG, Fontes MA, Schwab S, Coelho MRR, Lumbreras JF, da Motta PEF, Teixeira WG, Cole J, Borsanelli AC, Dutra IDS, Howe A, de Oliveira AP, Jesus EDC. Land-Use System and Forest Floor Explain Prokaryotic Metacommunity Structuring and Spatial Turnover in Amazonian Forest-to-Pasture Conversion Areas. Front Microbiol 2021; 12:657508. [PMID: 33967996 PMCID: PMC8097146 DOI: 10.3389/fmicb.2021.657508] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Accepted: 03/29/2021] [Indexed: 01/04/2023] Open
Abstract
Advancing extensive cattle production is a major threat to biodiversity conservation in Amazonia. The dominant vegetation cover has a drastic impact on soil microbial communities, affecting their composition, structure, and ecological services. Herein, we explored relationships between land-use, soil types, and forest floor compartments on the prokaryotic metacommunity structuring in Western Amazonia. Soil samples were taken in sites under high anthropogenic pressure and distributed along a ±800 km gradient. Additionally, the litter and a root layer, characteristic of the forest environment, were sampled. DNA was extracted, and metacommunity composition and structure were assessed through 16S rRNA gene sequencing. Prokaryotic metacommunities in the bulk soil were strongly affected by pH, base and aluminum saturation, Ca + Mg concentration, the sum of bases, and silt percentage, due to land-use management and natural differences among the soil types. Higher alpha, beta, and gamma diversities were observed in sites with higher soil pH and fertility, such as pasture soils or fertile soils of the state of Acre. When taking litter and root layer communities into account, the beta diversity was significantly higher in the forest floor than in pasture bulk soil for all study regions. Our results show that the forest floor's prokaryotic metacommunity performs a spatial turnover hitherto underestimated to the regional scale of diversity.
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Affiliation(s)
- Fernando Igne Rocha
- Department of Soil, Universidade Federal Rural do Rio de Janeiro, Seropédica, Brazil
- Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA, United States
| | | | | | - Stefan Schwab
- National Agrobiology Research Center, Embrapa Agrobiologia, Seropédica, Brazil
| | | | | | | | | | - James Cole
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI, United States
| | | | - Iveraldo dos Santos Dutra
- Department of Support, Production and Animal Health, Universidade Estadual Paulista, Araçatuba, Brazil
| | - Adina Howe
- Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA, United States
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Zou Y, Sang W, Wang S, Warren-Thomas E, Liu Y, Yu Z, Wang C, Axmacher JC. Diversity patterns of ground beetles and understory vegetation in mature, secondary, and plantation forest regions of temperate northern China. Ecol Evol 2015; 5:531-42. [PMID: 25691978 PMCID: PMC4328759 DOI: 10.1002/ece3.1367] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Revised: 11/09/2014] [Accepted: 11/25/2014] [Indexed: 11/09/2022] Open
Abstract
Plantation and secondary forests form increasingly important components of the global forest cover, but our current knowledge about their potential contribution to biodiversity conservation is limited. We surveyed understory plant and carabid species assemblages at three distinct regions in temperate northeastern China, dominated by mature forest (Changbaishan Nature Reserve, sampled in 2011 and 2012), secondary forest (Dongling Mountain, sampled in 2011 and 2012), and forest plantation habitats (Bashang Plateau, sampled in 2006 and 2007), respectively. The α-diversity of both taxonomic groups was highest in plantation forests of the Bashang Plateau. Beetle α-diversity was lowest, but plant and beetle species turnover peaked in the secondary forests of Dongling Mountain, while habitats in the Changbaishan Nature Reserve showed the lowest turnover rates for both taxa. Changbaishan Nature Reserve harbored the highest proportion of forest specialists. Our results suggest that in temperate regions of northern China, the protected larch plantation forest established over extensive areas might play a considerable role in maintaining a high biodiversity in relation to understory herbaceous plant species and carabid assemblages, which can be seen as indicators of forest disturbance. The high proportion of phytophagous carabids and the rarity of forest specialists reflect the relatively homogenous, immature status of the forest ecosystems on the Bashang Plateau. China's last remaining large old-growth forests like the ones on Changbaishan represent stable, mature ecosystems which require particular conservation attention.
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Affiliation(s)
- Yi Zou
- UCL Department of Geography, University College London London, WC1E 6BT, UK
| | - Weiguo Sang
- The State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences Beijing, 100093, China ; College of Life and Environmental Science, Minzu University of China Beijing, 100081, China
| | - Shunzhong Wang
- The State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences Beijing, 100093, China
| | | | - Yunhui Liu
- College of Resources and Environmental Sciences, China Agricultural University Beijing, 100193, China
| | - Zhenrong Yu
- College of Resources and Environmental Sciences, China Agricultural University Beijing, 100193, China
| | - Changliu Wang
- College of Resources and Environmental Sciences, China Agricultural University Beijing, 100193, China
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Pärtel M, Laanisto L, Zobel M. CONTRASTING PLANT PRODUCTIVITY–DIVERSITY RELATIONSHIPS ACROSS LATITUDE: THE ROLE OF EVOLUTIONARY HISTORY. Ecology 2007; 88:1091-7. [PMID: 17536394 DOI: 10.1890/06-0997] [Citation(s) in RCA: 135] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The relationship between net primary productivity and biological diversity has been a central topic in ecology for several decades. The unimodal ("hump-back") relationship has been the most widely accepted for plants with the decrease in diversity at high productivity usually attributed to competitive exclusion. However, the relatively small species pool size under high productivity conditions may account for this pattern as well. Small species pool sizes for highly productive habitats are characteristic of temperate regions, where productive habitats for speciation and species migration have historically been rare. In contrast, productive habitats in the tropics have been relatively common during evolutionary history, resulting in large species pools. We hypothesize that evolutionary history contributes to the observed productivity-diversity relationship of plants, and that the productivity-diversity relationship differs between temperate and tropical regions. We investigated the productivity-diversity relationship patterns from 163 case studies throughout the world. Latitude described approximately 80% of the variation in the shape of the relationships. The unimodal relationship was found to dominate in the temperate zone, whereas the positive relationship was significantly more common in the tropics. We detected no influence due to methods of productivity measurement, but unimodal or positive productivity-diversity relationships were more likely within larger ranges of productivity. The length of the productivity gradient did not affect the latitudinal influence. In summary, the shape of the productivity-diversity relationship differs between temperate and tropical regions and the different evolutionary history of the local species pools is a probable cause for the difference.
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Affiliation(s)
- Meelis Pärtel
- Institute of Botany and Ecology, University of Tartu, 40 Lai Street, Tartu 51005 Estonia.
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Becker P, Sharbini N, Yahya R. Root Architecture and Root:Shoot Allocation of Shrubs and Saplings in Two Lowland Tropical Forests: Implications for Life-Form Composition1. Biotropica 1999. [DOI: 10.1111/j.1744-7429.1999.tb00120.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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