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Santos EG, Wiederhecker HC, Pompermaier VT, Gainsbury AM, Schirmer SC, Morais CVF, Fontenele JL, de Morais Santana MC, Marini MÂ. Urbanization reduces diversity, simplifies community and filter bird species based on their functional traits in a tropical city. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 935:173379. [PMID: 38795992 DOI: 10.1016/j.scitotenv.2024.173379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 05/14/2024] [Accepted: 05/18/2024] [Indexed: 05/28/2024]
Abstract
Understanding how organisms are coping with major changes imposed by urban intensification is a complex task. In fact, our understanding of the impacts of urbanization on biodiversity is scarce in the global south compared to the north. In this study, we evaluated how bird communities are affected by impact of urban intensification in a tropical city. Thus, we assessed whether increased urban intensification 1) jeopardizes bird diversity (taking into account taxonomic-TD, phylogenetic-PD, and functional-FD dimensions), 2) drives changes in bird community composition and enables the detection of indicator species of such impact, and 3) leads to changes in bird functional traits linked to reproduction, resource acquisition, and survival. We found that urban intensification has a direct impact on the bird community, reducing all three types of diversity. Communities in areas of greater urban intensity are represented by fewer species, and these species are PD and FD less distinct. In addition, we detected at least ten species of areas of lower urban intensity that proved to be more sensitive to urban intensification. With regard to bird traits, we found no significant responses from reproductive, habitat use and feeding variables. Body weight and tail length were the only variables with significant results, with higher urbanization intensity areas selecting for species with lower weights and longer tails. Given the global biodiversity loss we are observing, this information can guide urban managers and planners in designing urban landscapes to maintain biodiversity in cities.
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Affiliation(s)
- Eduardo Guimarães Santos
- Universidade de Brasília, Instituto de Ciências Biológicas, Programa de Pós-graduação em Ecologia, 70919-970 Brasília, DF, Brazil.
| | | | - Vinicius Tirelli Pompermaier
- Universidade de Brasília, Instituto de Ciências Biológicas, Programa de Pós-graduação em Ecologia, 70919-970 Brasília, DF, Brazil
| | - Alison M Gainsbury
- University of South Florida, St. Petersburg Campus, Department of Integrative Biology, St. Petersburg, FL, USA
| | - Sofia Coradini Schirmer
- Universidade de Brasília, Instituto de Ciências Biológicas, Programa de Pós-graduação em Ecologia, 70919-970 Brasília, DF, Brazil
| | | | | | | | - Miguel Ângelo Marini
- Universidade de Brasília, Instituto de Ciências Biológicas, Departamento de Zoologia, 70910-970 Brasília, DF, Brazil
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Nehring L, Kranabetter JM, Harper GJ, Hawkins BJ. Tree-ring δ15N as an indicator of nitrogen dynamics in stands with N2-fixing Alnus rubra. TREE PHYSIOLOGY 2023; 43:2064-2075. [PMID: 37672228 DOI: 10.1093/treephys/tpad110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 08/14/2023] [Accepted: 09/03/2023] [Indexed: 09/07/2023]
Abstract
Tree-ring δ15N may depict site-specific, long-term patterns in nitrogen (N) dynamics under N2-fixing species, but field trials with N2-fixing tree species are lacking and the relationship of temporal patterns in tree-ring δ15N to soil N dynamics is controversial. We examined whether the tree-ring δ15N of N2-fixing red alder (Alnus rubra Bong.) would mirror N accretion rates and δ15N of soils and whether the influence of alder-fixed N could be observed in the wood of a neighboring conifer. We sampled a 27-year-old replacement series trial on south-eastern Vancouver Island, with red alder and coastal Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) planted in five proportions (0/100, 11/89, 25/75, 50/50 and 100/0) at a uniform stem density. An escalation in forest floor N content was evident with an increasing proportion of red alder, equivalent to a difference of ~750 kg N ha-1 between 100% Douglas-fir versus 100% alder. The forest floor horizon also had high δ15N values in treatments with more red alder. Red alder had a consistent quadratic fit in tree-ring δ15N over time, with a net increase of $\sim$1.5‰, on average, from initial values, followed by a plateau or slight decline. Douglas-fir tree-ring δ15N, in contrast, was largely unchanged over time (in three of four plots) but was significantly higher in the 50/50 mix. The minor differences in current leaf litter N content and δ15N between alder and Douglas-fir, coupled with declining growth in red alder, suggests the plateau or declining trend in alder tree-ring δ15N could coincide with lower N2-fixation rates, potentially by loss in alder vigor at canopy closure, or down-regulation via nitrate availability.
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Affiliation(s)
- L Nehring
- Centre for Forest Biology, University of Victoria, PO Box 3020, STN CSC, 3800 Finnerty Road,Victoria, British Columbia V8P 5C2, Canada
| | - J M Kranabetter
- British Columbia Ministry of Forests, PO Box 9536, Stn Prov Govt, 4300 North Road, Victoria, British Columbia V8Z 5J3, Canada
| | - G J Harper
- British Columbia Ministry of Forests, 4th Floor - 545 Superior Street, Victoria, British Columbia V8V 1T7, Canada
| | - B J Hawkins
- Centre for Forest Biology, University of Victoria, PO Box 3020, STN CSC, 3800 Finnerty Road,Victoria, British Columbia V8P 5C2, Canada
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Sugiyama Y, Matsuoka S, Osono T. Two-years of investigation revealed the inconsistency of seasonal dynamics of an ectomycorrhizal fungal community in Japanese cool-temperate forest across years. FEMS Microbiol Ecol 2020; 96:5857164. [DOI: 10.1093/femsec/fiaa118] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 06/11/2020] [Indexed: 11/13/2022] Open
Abstract
ABSTRACT
Ectomycorrhizal (ECM) fungal communities show temporal dynamics. Such dynamics have been mainly assessed with 1 year of investigations and have been related to the seasonal changes in environment. Recent study in sub-tropical region has revealed that stochastic temporal-based process can affect ECM fungal community, making the community of the same season different between years. The different community structures across years have also been observed in the Arctic region with a grass host. Nevertheless, in temperate zones, the effect of temporal-based processes and the consistency of seasonal dynamics have never been investigated. We conducted a 2-year root sampling in a cool temperate Fagus crenata forest to test whether the temporal variation of ECM fungal community composition could be explained by season. The explanation powers of temporal distance and environmental factors for the temporal dynamics of ECM fungal community were simultaneously evaluated. The variation in community structure was significantly explained by year but not by season, indicating that seasonal community structure differed between years. This difference in the community structure across years was partly explained by temporal factors. Our study implies that the temporal dynamics of ECM fungal communities in temperate forests are affected by temporal-based factors and can vary across years.
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Affiliation(s)
- Yoriko Sugiyama
- Graduate School of Human and Environmental Studies, Kyoto University, Yoshida-nihonmatsu-cho, Sakyo-ku, Kyoto 606–8501, Japan
| | - Shunsuke Matsuoka
- Graduate School of Simulation Studies, University of Hyogo, 7-1-28 Minatojima-minamimachi, Chuo-ku, Kobe, 650-0047, Japan
| | - Takashi Osono
- Department of Environmental Systems Science, Faculty of Science and Engineering, Doshisha University, Tatara Miyakodani 1-3, Kyotanabe, Kyoto, 610-0394, Japan
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Matsuoka S, Iwasaki T, Sugiyama Y, Kawaguchi E, Doi H, Osono T. Biogeographic Patterns of Ectomycorrhizal Fungal Communities Associated With Castanopsis sieboldii Across the Japanese Archipelago. Front Microbiol 2019; 10:2656. [PMID: 31798567 PMCID: PMC6868053 DOI: 10.3389/fmicb.2019.02656] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 10/31/2019] [Indexed: 11/13/2022] Open
Abstract
Biogeographic patterns in ectomycorrhizal (ECM) fungal communities and their drivers have been elucidated, including effects of host tree species and abiotic (climatic and edaphic) conditions. At these geographic scales, genotypic diversity and composition of single host tree species change with spatial and environmental gradients, reflecting their historical dispersal events. However, whether the host genotypes can be associated with the biogeographic patterns of ECM communities remains unclear. We investigated the biogeographic pattern of ECM fungal community associated with the single host species Castanopsis sieboldii (Fagaceae), whose genotypic diversity and composition across the Japanese archipelago has already been evaluated. ECM communities were investigated in 12 mature Castanopsis-dominated forests covering almost the entire distribution range of C. sieboldii, and we quantified the effect of host genotypes on the biogeographic pattern of ECM fungal communities. Richness and community composition of ECM fungi changed with latitude and longitude; these biogeographic changes of ECM community were significantly correlated with host genotypic variables. Quantitative analyses showed a higher relative explanatory power of climatic and spatial variables than that of host genotypic variables for the biogeographic patterns in the ECM community. Our results suggest historical events of host dispersal can affect the biogeographic patterns of the ECM fungal community, while their explanation power was lower than that for climatic filtering and/or fungal dispersal.
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Affiliation(s)
- Shunsuke Matsuoka
- Graduate School of Simulation Studies, University of Hyogo, Kobe, Japan
| | - Takaya Iwasaki
- Department of Biological Sciences, Faculty of Science, Kanagawa University, Hiratsuka, Japan
| | - Yoriko Sugiyama
- Graduate School of Human and Environmental Studies, Kyoto University, Kyoto, Japan
| | - Eri Kawaguchi
- Department of Life Science Frontiers, Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
| | - Hideyuki Doi
- Graduate School of Simulation Studies, University of Hyogo, Kobe, Japan
| | - Takashi Osono
- Department of Environmental Systems Science, Faculty of Science and Engineering, Doshisha University, Kyoto, Japan
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Ramos A, Garay-Serrano E, César E, Montoya L, Bandala VM. Ectomycorrhizas of two species of Tuber (clade Puberulum) in the Mexican subtropical cloud forest. Symbiosis 2017. [DOI: 10.1007/s13199-017-0535-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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