P. Brandon Matheny, Renée Lebeuf, Marisol Sánchez-García, Mary G. Graddy, Steven A. Trudell, Michal G. Wood, Else C. Vellinga
Botany, Volume 102, Issue 9, Page 355-365, September 2024. Four new species of Albomagister, a genus of Tricholomataceae in the order Agaricales, are described and illustrated from eastern North America. All four are relatively rare or geographically restricted but two have a broad geographical distribution occurring in southeast Canada and in the southern Appalachians. This study increases the number of known species in the genus from three to seven, five of which occur in eastern North America. A broad concept for the genus is discussed. Illustrations and descriptions of the North American taxa are presented, along with a taxonomic key to the known seven species in the genus worldwide.
{"title":"Four new species of Albomagister (Agaricales) from eastern North America","authors":"P. Brandon Matheny, Renée Lebeuf, Marisol Sánchez-García, Mary G. Graddy, Steven A. Trudell, Michal G. Wood, Else C. Vellinga","doi":"10.1139/cjb-2024-0058","DOIUrl":"https://doi.org/10.1139/cjb-2024-0058","url":null,"abstract":"Botany, Volume 102, Issue 9, Page 355-365, September 2024. <br/> Four new species of Albomagister, a genus of Tricholomataceae in the order Agaricales, are described and illustrated from eastern North America. All four are relatively rare or geographically restricted but two have a broad geographical distribution occurring in southeast Canada and in the southern Appalachians. This study increases the number of known species in the genus from three to seven, five of which occur in eastern North America. A broad concept for the genus is discussed. Illustrations and descriptions of the North American taxa are presented, along with a taxonomic key to the known seven species in the genus worldwide.","PeriodicalId":9092,"journal":{"name":"Botany","volume":"127 4 Pt 1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142215471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sarah Kotsopoulos, Katie Turnbull, Chris Cormack, Lyndsay A. Cartwright, Sue M. Hayes, Brian Ford, Rivka Shachak, Autumn Watkinson
Botany, Ahead of Print. Across Ontario, Canada, there are over 30 000 km of transmission line corridors. With proper planning and ongoing maintenance and monitoring, these corridors have the potential to be transformed into native meadow, offering vital pathways connecting natural heritage systems and supporting wildlife movement, while promoting biodiversity, natural functions, and ecosystem health. In 2019, seeding trials were established in the Gatineau Hydro Corridor in east Toronto where a long-term meadow creation project (The Meadoway) is ongoing, to evaluate the effectiveness of herbicide treatment (glyphosate), sowing method, and sowing season on seeding success with the goal of informing site-specific meadow creation techniques. Seed mixes included a variety of native grasses and forbs and were dominated by copper savannah grass (Sorghastrum nutans), big bluestem (Andropogon gerardii), little bluestem (Schizachyrium scoparium), and switch grass (Panicum virgatum). Overall, fall or winter seeding with herbicide led to the highest seeding success. There was no difference in the effectiveness of hand seeding or using the seed drill. The results of this work provide valuable insights into effective seeding techniques to improve seeding success and also highlight the benefits of in situ experimentation to inform meadow creation techniques.
{"title":"The Meadoway: native meadow creation in underutilized transmission line corridors","authors":"Sarah Kotsopoulos, Katie Turnbull, Chris Cormack, Lyndsay A. Cartwright, Sue M. Hayes, Brian Ford, Rivka Shachak, Autumn Watkinson","doi":"10.1139/cjb-2023-0157","DOIUrl":"https://doi.org/10.1139/cjb-2023-0157","url":null,"abstract":"Botany, Ahead of Print. <br/> Across Ontario, Canada, there are over 30 000 km of transmission line corridors. With proper planning and ongoing maintenance and monitoring, these corridors have the potential to be transformed into native meadow, offering vital pathways connecting natural heritage systems and supporting wildlife movement, while promoting biodiversity, natural functions, and ecosystem health. In 2019, seeding trials were established in the Gatineau Hydro Corridor in east Toronto where a long-term meadow creation project (The Meadoway) is ongoing, to evaluate the effectiveness of herbicide treatment (glyphosate), sowing method, and sowing season on seeding success with the goal of informing site-specific meadow creation techniques. Seed mixes included a variety of native grasses and forbs and were dominated by copper savannah grass (Sorghastrum nutans), big bluestem (Andropogon gerardii), little bluestem (Schizachyrium scoparium), and switch grass (Panicum virgatum). Overall, fall or winter seeding with herbicide led to the highest seeding success. There was no difference in the effectiveness of hand seeding or using the seed drill. The results of this work provide valuable insights into effective seeding techniques to improve seeding success and also highlight the benefits of in situ experimentation to inform meadow creation techniques.","PeriodicalId":9092,"journal":{"name":"Botany","volume":"5 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141948270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nick A. Antonishyn, Jeffrey G. Duckett, Neil W. Ashton
Botany, Ahead of Print. Light-grown, whole gametophytic colonies of Physcomitrium (formerly Physcomitrella) patens (Hedw.) Mitt. exhibit a spiral morphology resulting from the strongly coordinated curvature of the population of peripheral caulonemal filaments. The direction of curvature is predominantly clockwise when cultures are illuminated from above and anticlockwise when illuminated from below. In P. patens, side branch initials (SBIs) emerge from caulonemal subapical cells on the outside of the curve. By contrast, the curvature of caulonemata of Funaria hygrometrica is predominantly anticlockwise when colonies are illuminated from above and clockwise when illuminated from below. In F. hygrometrica, SBIs emerge from caulonemal subapical cells on the inside of the curve. We have discounted a role for gravity in these phenomena and discuss several other possible mechanistic explanations. We also document for the first time thigmotropism of protonemata of P. patens.
植物学》，印刷前。 Physcomitrium（原名 Physcomitrella）patens (Hedw.) Mitt.在光照下生长的整个配子体菌落呈现出螺旋状形态，这是由于外围茎丝群体强烈协调弯曲造成的。从上方照射培养物时，弯曲方向主要是顺时针方向，从下方照射时则是逆时针方向。在 P. patens 中，侧枝初始（SBI）出现在曲线外侧的茎基部近顶端细胞中。相比之下，从上方照射菌落时，Funaria hygrometrica 的茎基部主要呈逆时针方向弯曲，而从下方照射时则呈顺时针方向弯曲。在 F. hygrometrica 中，SBI 从位于曲线内侧的茎基部顶下细胞中出现。我们否定了重力在这些现象中的作用，并讨论了其他几种可能的机理解释。此外，我们还首次记录了荷兰鼠李原生质体的thigmotropism。
{"title":"Observations on the curvature of Physcomitrium patens (Hedw.) Mitt. and Funaria hygrometrica (Hedw.) caulonemal filaments","authors":"Nick A. Antonishyn, Jeffrey G. Duckett, Neil W. Ashton","doi":"10.1139/cjb-2024-0028","DOIUrl":"https://doi.org/10.1139/cjb-2024-0028","url":null,"abstract":"Botany, Ahead of Print. <br/> Light-grown, whole gametophytic colonies of Physcomitrium (formerly Physcomitrella) patens (Hedw.) Mitt. exhibit a spiral morphology resulting from the strongly coordinated curvature of the population of peripheral caulonemal filaments. The direction of curvature is predominantly clockwise when cultures are illuminated from above and anticlockwise when illuminated from below. In P. patens, side branch initials (SBIs) emerge from caulonemal subapical cells on the outside of the curve. By contrast, the curvature of caulonemata of Funaria hygrometrica is predominantly anticlockwise when colonies are illuminated from above and clockwise when illuminated from below. In F. hygrometrica, SBIs emerge from caulonemal subapical cells on the inside of the curve. We have discounted a role for gravity in these phenomena and discuss several other possible mechanistic explanations. We also document for the first time thigmotropism of protonemata of P. patens.","PeriodicalId":9092,"journal":{"name":"Botany","volume":"2 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142215472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Vito Emanuele Cambria, Carlo Fratarcangeli, Giuliano Fanelli, Virginia Chiara Cuccaro, Ilaria Panero, Michele De Sanctis, Luca Malatesta, Fabio Attorre
Botany, Ahead of Print. The Miyawaki method, developed by Akira Miyawaki, restores natural forests by planting diverse native species in compact spaces, rapidly creating compact, resilient ecosystems. Initially successful in Japan, its global application bloomed but remains rare in Mediterranean urban areas despite benefits like biodiversity enhancement and climate change mitigation. This method's effectiveness in Mediterranean climates, which face unique challenges like urban heat islands and biodiversity loss, is underexplored in literature and practice. We are leading a project in Italy to identify optimal plant assemblages, addressing the method's documentation gap in urban settings. It explores the potential of Tiny Forests to provide ecosystem services and improve urban liveability against climatic extremes. This note paper details the methodological steps undertaken in this experimental application, offering a tailored approach to test the method's adaptability and impact in Mediterranean urban environments, suggesting a significant opportunity for urban greening and resilience.
{"title":"Testing the Miyawaki method in Mediterranean urban areas through a standardised experimental design","authors":"Vito Emanuele Cambria, Carlo Fratarcangeli, Giuliano Fanelli, Virginia Chiara Cuccaro, Ilaria Panero, Michele De Sanctis, Luca Malatesta, Fabio Attorre","doi":"10.1139/cjb-2024-0045","DOIUrl":"https://doi.org/10.1139/cjb-2024-0045","url":null,"abstract":"Botany, Ahead of Print. <br/> The Miyawaki method, developed by Akira Miyawaki, restores natural forests by planting diverse native species in compact spaces, rapidly creating compact, resilient ecosystems. Initially successful in Japan, its global application bloomed but remains rare in Mediterranean urban areas despite benefits like biodiversity enhancement and climate change mitigation. This method's effectiveness in Mediterranean climates, which face unique challenges like urban heat islands and biodiversity loss, is underexplored in literature and practice. We are leading a project in Italy to identify optimal plant assemblages, addressing the method's documentation gap in urban settings. It explores the potential of Tiny Forests to provide ecosystem services and improve urban liveability against climatic extremes. This note paper details the methodological steps undertaken in this experimental application, offering a tailored approach to test the method's adaptability and impact in Mediterranean urban environments, suggesting a significant opportunity for urban greening and resilience.","PeriodicalId":9092,"journal":{"name":"Botany","volume":"64 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142215473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Braulio R. Pérez-Alva, Gema L. Galindo-Flores, Yendi E. Navarro-Noya, Arturo Estrada-Torres, Alejandro Flores-Manzanero, Guillermo A. Pérez-Flores, Bárbara Cruz-Salazar
Botany, Ahead of Print. In long-lived species, deforestation can modify the genetic diversity patterns of recent populations. The spatial-structure genetics of Pinus leiophylla Schiede ex Schltdl. & Cham. was investigated in adults and seedlings of remnant populations from central Mexico. Two chloroplast intergenic regions were sequenced of two cohorts (adults and seedlings) of 121 individuals of P. leiophylla from three localities. Higher genetic differentiation was found in adults (ФST = 0.09) than in seedlings (ФST = 0.03). The discriminant analysis of principal components detected four genetic clusters and the Mantel test found a weak but significant isolation by distance pattern (r2 = 0.05, p = 0.002). Sixteen percent of genetic variation was explained by the spatial component according to the genetic neighborhood analysis. And the effect of three landscape features, i.e., elevation, aspect (sine and cosine), and land use, explored with ResistanceGA, detected that land use significantly restricts gene flow between populations, mostly in the farming category. This study emphasizes the critical role of preserving forest cover to maintain connectivity among remnants of P. leiophylla. Insights of this study will contribute to the conservation of conifers in Mexican temperate forests, especially within landscapes heavily altered by human activities.
{"title":"Spatial genetic patterns of a long-lived tree species: the case of Pinus leiophylla in a human-altered landscape of central Mexico","authors":"Braulio R. Pérez-Alva, Gema L. Galindo-Flores, Yendi E. Navarro-Noya, Arturo Estrada-Torres, Alejandro Flores-Manzanero, Guillermo A. Pérez-Flores, Bárbara Cruz-Salazar","doi":"10.1139/cjb-2024-0012","DOIUrl":"https://doi.org/10.1139/cjb-2024-0012","url":null,"abstract":"Botany, Ahead of Print. <br/> In long-lived species, deforestation can modify the genetic diversity patterns of recent populations. The spatial-structure genetics of Pinus leiophylla Schiede ex Schltdl. & Cham. was investigated in adults and seedlings of remnant populations from central Mexico. Two chloroplast intergenic regions were sequenced of two cohorts (adults and seedlings) of 121 individuals of P. leiophylla from three localities. Higher genetic differentiation was found in adults (ФST = 0.09) than in seedlings (ФST = 0.03). The discriminant analysis of principal components detected four genetic clusters and the Mantel test found a weak but significant isolation by distance pattern (r2 = 0.05, p = 0.002). Sixteen percent of genetic variation was explained by the spatial component according to the genetic neighborhood analysis. And the effect of three landscape features, i.e., elevation, aspect (sine and cosine), and land use, explored with ResistanceGA, detected that land use significantly restricts gene flow between populations, mostly in the farming category. This study emphasizes the critical role of preserving forest cover to maintain connectivity among remnants of P. leiophylla. Insights of this study will contribute to the conservation of conifers in Mexican temperate forests, especially within landscapes heavily altered by human activities.","PeriodicalId":9092,"journal":{"name":"Botany","volume":"21 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141503314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kimber E. Munford, William Humphrey, Patrick A. Levasseur, Peter Beckett, Shaun A. Watmough
Botany, Ahead of Print. Starting in the mid 1970’s, researchers, industry leaders, and residents collaborated on one of the world’s largest regreening programs in the industrial region of Sudbury, Canada. The Sudbury Regreening Recipe included the application of crushed dolomitic limestone, nitrogen–phosphorus–potassium fertilizers, grass–legume seed mixtures across 8200 ha, and subsequent tree planting across 25 000 ha of acidic metal-contaminated land. The current study evaluated shifts in understory vegetation diversity and soil geochemistry on a chronosequence of sites treated the same way between 1982 and 2012. Fifty-six plant species were identified across the 24 sites, only four of which were planted in the initial remediation effort. Key factors influencing plant community composition and diversity were related to shifts in soil properties over time: bulk density, LFH layer depth, and mineral soil horizon pH. Plant communities differed with stand age and rocky sites had significantly different plant communities and lower canopy cover than less rocky sites. Mineral soil horizon pH increased with age, reflecting the movement of applied dolomite in soil. Despite high concentrations of total copper and nickel in soil, plant succession patterns were generally similar to those in naturally recovering forests demonstrating the overall success of the restoration program.
{"title":"Effects of large-scale restoration on understory plant communities in an industrial landscape","authors":"Kimber E. Munford, William Humphrey, Patrick A. Levasseur, Peter Beckett, Shaun A. Watmough","doi":"10.1139/cjb-2024-0015","DOIUrl":"https://doi.org/10.1139/cjb-2024-0015","url":null,"abstract":"Botany, Ahead of Print. <br/> Starting in the mid 1970’s, researchers, industry leaders, and residents collaborated on one of the world’s largest regreening programs in the industrial region of Sudbury, Canada. The Sudbury Regreening Recipe included the application of crushed dolomitic limestone, nitrogen–phosphorus–potassium fertilizers, grass–legume seed mixtures across 8200 ha, and subsequent tree planting across 25 000 ha of acidic metal-contaminated land. The current study evaluated shifts in understory vegetation diversity and soil geochemistry on a chronosequence of sites treated the same way between 1982 and 2012. Fifty-six plant species were identified across the 24 sites, only four of which were planted in the initial remediation effort. Key factors influencing plant community composition and diversity were related to shifts in soil properties over time: bulk density, LFH layer depth, and mineral soil horizon pH. Plant communities differed with stand age and rocky sites had significantly different plant communities and lower canopy cover than less rocky sites. Mineral soil horizon pH increased with age, reflecting the movement of applied dolomite in soil. Despite high concentrations of total copper and nickel in soil, plant succession patterns were generally similar to those in naturally recovering forests demonstrating the overall success of the restoration program.","PeriodicalId":9092,"journal":{"name":"Botany","volume":"18 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142215474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jiao Qin, Zhou-Dong Han, You Wu, Hong Wang, Shi-Bao Zhang
Botany, Ahead of Print. The tiny terrestrial orchids (plant height less than 8 cm) in the genus Corybas dependent on mycorrhizal fungal (OMF) partners for seed germination and seedling development. The OMF community of the Corybas remains poorly understood, although the relevant knowledge is very important for in situ and ex situ conservation of these orchids. In this study, we characterized OMF richness and compositions of three helmet-orchid species, i.e., Corybas geminigibbus, C. himalaicus, and C. shanlinshiensis, from their natural habitats by using Illumina sequencing of the internal transcribed spacer 2 region. We found that fungal colonization was restricted in the rhizomes of the helmet-orchids instead of their tuberoids, and serendipitoid fungi were predominant, while tulasnelloid were absent in the three investigated Corybas species regardless of their altitude. The three Corybas species shared 27 serendipitoid operational taxonomic units that are different to those of their related orchids, the genera of Cyrtostylis and Stigmatodactylus. Corybas shanlinshiensis alone had a range of ectomycorrhizal fungi (mainly russuloid and thelephoroid) broader than C. himalaicus and C. geminigibbus. Our study provides new information about terrestrial orchid–fungi associations and may further contribute to orchid conservation.
{"title":"Three helmet-orchid species share abundant fungi of Serendipitaceae regardless of altitude","authors":"Jiao Qin, Zhou-Dong Han, You Wu, Hong Wang, Shi-Bao Zhang","doi":"10.1139/cjb-2024-0020","DOIUrl":"https://doi.org/10.1139/cjb-2024-0020","url":null,"abstract":"Botany, Ahead of Print. <br/> The tiny terrestrial orchids (plant height less than 8 cm) in the genus Corybas dependent on mycorrhizal fungal (OMF) partners for seed germination and seedling development. The OMF community of the Corybas remains poorly understood, although the relevant knowledge is very important for in situ and ex situ conservation of these orchids. In this study, we characterized OMF richness and compositions of three helmet-orchid species, i.e., Corybas geminigibbus, C. himalaicus, and C. shanlinshiensis, from their natural habitats by using Illumina sequencing of the internal transcribed spacer 2 region. We found that fungal colonization was restricted in the rhizomes of the helmet-orchids instead of their tuberoids, and serendipitoid fungi were predominant, while tulasnelloid were absent in the three investigated Corybas species regardless of their altitude. The three Corybas species shared 27 serendipitoid operational taxonomic units that are different to those of their related orchids, the genera of Cyrtostylis and Stigmatodactylus. Corybas shanlinshiensis alone had a range of ectomycorrhizal fungi (mainly russuloid and thelephoroid) broader than C. himalaicus and C. geminigibbus. Our study provides new information about terrestrial orchid–fungi associations and may further contribute to orchid conservation.","PeriodicalId":9092,"journal":{"name":"Botany","volume":"26 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141503366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Botany, Ahead of Print. Associations between bryophytes and dinitrogen (N2)-fixing bacteria are a significant source of exogenous N in unmanaged boreal and possibly temperate ecosystems. However, the extent to which biological N2-fixation (BNF) applies to the boreal–temperate ecotone remains elusive. The current focus on common species limits our understanding of BNF at the community level. Our objective was to characterize the presence of cyanobacteria and BNF activity associated with bryophytes in the coastal forests of Fundy National Park (New Brunswick, Canada). In 2021, we harvested three liverwort and 11 moss species from two sites (71 samples) and measured environmental covariates (e.g., canopy composition and soil pH). We used stable isotope incubations with 15N2 gas in growth chambers to quantify potential BNF activity and used phycocyanin extractions as a cyanobacteria abundance proxy. Many species presented detectable BNF rates, which were similar to or higher than those of well-studied feather mosses. These included species that have rarely been found to contribute to BNF. While cyanobacteria were present on most samples, we found no positive association between abundance and BNF. Our findings are among the first records for bryophyte-associated BNF in the boreal–temperate ecotone of eastern Canada and offer insights into the potential role of this process in N cycling in coastal conifer-dominated forests.
{"title":"First evidence of nitrogen fixation associated with bryophytes from coastal Wabanaki–Acadian forests","authors":"Mélanie Jean, Jean-Philippe Bellenger","doi":"10.1139/cjb-2024-0003","DOIUrl":"https://doi.org/10.1139/cjb-2024-0003","url":null,"abstract":"Botany, Ahead of Print. <br/> Associations between bryophytes and dinitrogen (N2)-fixing bacteria are a significant source of exogenous N in unmanaged boreal and possibly temperate ecosystems. However, the extent to which biological N2-fixation (BNF) applies to the boreal–temperate ecotone remains elusive. The current focus on common species limits our understanding of BNF at the community level. Our objective was to characterize the presence of cyanobacteria and BNF activity associated with bryophytes in the coastal forests of Fundy National Park (New Brunswick, Canada). In 2021, we harvested three liverwort and 11 moss species from two sites (71 samples) and measured environmental covariates (e.g., canopy composition and soil pH). We used stable isotope incubations with 15N2 gas in growth chambers to quantify potential BNF activity and used phycocyanin extractions as a cyanobacteria abundance proxy. Many species presented detectable BNF rates, which were similar to or higher than those of well-studied feather mosses. These included species that have rarely been found to contribute to BNF. While cyanobacteria were present on most samples, we found no positive association between abundance and BNF. Our findings are among the first records for bryophyte-associated BNF in the boreal–temperate ecotone of eastern Canada and offer insights into the potential role of this process in N cycling in coastal conifer-dominated forests.","PeriodicalId":9092,"journal":{"name":"Botany","volume":"32 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141528932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Liette Vasseur, Shelley Hepworth, Christian Lacroix
Botany, Ahead of Print.
植物学》，提前印刷。
{"title":"Correction: Climate and nature crisis is also about the health of plants","authors":"Liette Vasseur, Shelley Hepworth, Christian Lacroix","doi":"10.1139/cjb-2024-0018","DOIUrl":"https://doi.org/10.1139/cjb-2024-0018","url":null,"abstract":"Botany, Ahead of Print. <br/>","PeriodicalId":9092,"journal":{"name":"Botany","volume":"13 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140169649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
David C. Shaw, Luiza Teixeira-Costa, David M. Watson, Simon F. Shamoun
Botany, Volume 102, Issue 3, Page 56-57, March 2024.
植物学》，第 102 卷，第 3 期，第 56-57 页，2024 年 3 月。
{"title":"Introduction to the Special Issue on Parasitic Flowering Plants in Forests","authors":"David C. Shaw, Luiza Teixeira-Costa, David M. Watson, Simon F. Shamoun","doi":"10.1139/cjb-2024-0011","DOIUrl":"https://doi.org/10.1139/cjb-2024-0011","url":null,"abstract":"Botany, Volume 102, Issue 3, Page 56-57, March 2024. <br/>","PeriodicalId":9092,"journal":{"name":"Botany","volume":"28 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140107126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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