American Fern Journal最新文献_第4页

Exploring the Ecological Relevance and Variability of Circadian Regulation in Marsileaceae 冬青科植物昼夜节律调节的生态相关性和变异性探讨

IF 0.8 4区生物学

American Fern Journal Pub Date : 2022-11-07 DOI: 10.1640/0002-8444-112.4.303

Daniela Aros-Mualin, J. Flexas, Florian Galbier, M. Kessler

{"title":"Exploring the Ecological Relevance and Variability of Circadian Regulation in Marsileaceae","authors":"Daniela Aros-Mualin, J. Flexas, Florian Galbier, M. Kessler","doi":"10.1640/0002-8444-112.4.303","DOIUrl":"https://doi.org/10.1640/0002-8444-112.4.303","url":null,"abstract":"Abstract. Marsileaceae is a unique family of semi-aquatic ferns mainly growing in seasonal wetlands worldwide. These habitats present several challenges, since plants go from being wholly submerged to being exposed to aerial conditions, increasing drought stress. Although heterophylly has been studied as an adaptation to these environmental changes, there are still many unanswered questions concerning the mechanisms underlying the ecology of Marsileaceae. We studied the presence of circadian regulation in stomatal conductance, carbon assimilation rate, intrinsic water-use efficiency (iWUE), and leaf movement of four species from all three genera of Marsileaceae, and related our findings to possible water stress adaptations. No circadian regulation was detected in Pilularia globulifera, whereas Regnellidium diphyllum and two Marsilea species had an apparent rhythm in their stomatal conductance and iWUE, with species-specific patterns. Moreover, light-independent leaf movement was only found in Marsilea species. Taken together, the rhythm in iWUE and leaf movement, along with other anatomical traits for conserving water, infers different strategies to either increase carbon gain or reduce water use in Marsileaceae. Our study represents the first steps towards understanding the underlying drivers and adaptive value of circadian regulation in this family.","PeriodicalId":50817,"journal":{"name":"American Fern Journal","volume":"112 1","pages":"303 - 319"},"PeriodicalIF":0.8,"publicationDate":"2022-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41512032","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}

引用次数: 2

Ecology and Ecophysiology of Ferns and Lycophytes in a Changing Climate: A Special Issue of the American Fern Journal 气候变化中蕨类植物和苔藓植物的生态学和生态生理学：美国蕨类杂志特刊

IF 0.8 4区生物学

American Fern Journal Pub Date : 2022-11-07 DOI: 10.1640/0002-8444-112.4.227

K. Mehltreter, S. McAdam

引用次数: 1

Vulnerability Segmentation in Ferns and Its Implication on Their Survival During Drought 蕨类植物的脆弱性分割及其对干旱生存的影响

IF 0.8 4区生物学

American Fern Journal Pub Date : 2022-11-07 DOI: 10.1640/0002-8444-112.4.336

J. Suissa, Y. Preisler, J. E. Watkins, L. A. McCulloch

{"title":"Vulnerability Segmentation in Ferns and Its Implication on Their Survival During Drought","authors":"J. Suissa, Y. Preisler, J. E. Watkins, L. A. McCulloch","doi":"10.1640/0002-8444-112.4.336","DOIUrl":"https://doi.org/10.1640/0002-8444-112.4.336","url":null,"abstract":"Abstract. Climate change is expected to increase temperature and temporal precipitation variability leading to higher evapotranspiration and more frequent and severe droughts. While advancements are being made in our understanding of how plants will respond to these changes, gaps remain in our knowledge of species-specific drought response. This is especially true among herbaceous plant communities, including ferns and other seed-free vascular plants. Previous hydraulic work on ferns has almost exclusively concentrated on the leaves, with very little information on the rhizome, which is surprising given that the rhizome is the long-lived perennial organ (making it more costly and important in species survival). Only recently have rhizome hydraulics been explored in the context of drought stress. Similar to observations in many woody trees, fern leaves tend to desiccate and hydraulically disconnect before the perennial stem experiences significant levels of drought-induced embolism, suggesting strong vulnerability segmentation. These findings have significant implications for fern survival during drought. In this review we expand on these observations, integrating information from previous work on plant hydraulics and ecophysiology, to understand the implications of vulnerability segmentation on the response of ferns to future climate change.","PeriodicalId":50817,"journal":{"name":"American Fern Journal","volume":"112 1","pages":"336 - 353"},"PeriodicalIF":0.8,"publicationDate":"2022-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41784692","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}

引用次数: 0

Phenology of the Terrestrial Fern Community in a Tropical Dry Forest of Morelos, Mexico 墨西哥莫雷洛斯热带干林陆生蕨类植物群落的表型

IF 0.8 4区生物学

American Fern Journal Pub Date : 2022-11-07 DOI: 10.1640/0002-8444-112.4.269

Evelin B. Castrejon-Alfaro, Michelle Ramos-Robles, K. Aguilar-Dorantes

{"title":"Phenology of the Terrestrial Fern Community in a Tropical Dry Forest of Morelos, Mexico","authors":"Evelin B. Castrejon-Alfaro, Michelle Ramos-Robles, K. Aguilar-Dorantes","doi":"10.1640/0002-8444-112.4.269","DOIUrl":"https://doi.org/10.1640/0002-8444-112.4.269","url":null,"abstract":"Abstract. Phenological leaf characters of tropical ferns are often correlated with rainfall and temperature, especially in regions with pronounced dry and wet seasons. In this study, we describe the community- and species-level phenological patterns of leaf phenophases (young, non-fertile, fertile, senescent) of terrestrial ferns and their relationship with environmental variables in a Tropical Dry Forest over 15 months. At the community level, each phenophase was related to a different variable. The young phenophase was positively associated with precipitation, while non-fertile was positively associated with humidity, fertile was negatively associated with canopy cover, and senescent phenophase was not associated with any variable. At the species level, all fern species showed the peak leaf production of each phenophase in the rainy season. However, each phenophase was present during different periods of the rainy season; at the beginning, it was the young phenophase, in the middle, the non-fertile and fertile phenophase, and at the end, the senescent. Such phenological studies will help us understand how fern species change over time and modify their strategies, especially at the community level, in the face of imminent global climate change.","PeriodicalId":50817,"journal":{"name":"American Fern Journal","volume":"112 1","pages":"269 - 284"},"PeriodicalIF":0.8,"publicationDate":"2022-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41856170","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}

引用次数: 2

Long-term Studies of Annual Variation in Growth and Reproduction of the Understory Fern Steiropteris deltoidea in a Hurricane-prone Rainforest in Puerto Rico 波多黎各易受飓风影响的热带雨林中三角蕨生长繁殖年变化的长期研究

IF 0.8 4区生物学

American Fern Journal Pub Date : 2022-11-07 DOI: 10.1640/0002-8444-112.4.251

J. Sharpe

{"title":"Long-term Studies of Annual Variation in Growth and Reproduction of the Understory Fern Steiropteris deltoidea in a Hurricane-prone Rainforest in Puerto Rico","authors":"J. Sharpe","doi":"10.1640/0002-8444-112.4.251","DOIUrl":"https://doi.org/10.1640/0002-8444-112.4.251","url":null,"abstract":"Abstract. Two long-term studies were conducted in a rainforest in Puerto Rico that included measurements of leaf and plant functional traits of the common fern species Steiropteris deltoidea. A Fern Demography study (1993-2009) compared annual variation and effects of a category 3 hurricane (Georges, 1998) on fertile and sterile leaf traits. A second long-term study (2003-2019), the Canopy Trimming Experiment, evaluated annual variation in growth and reproduction of S. deltoidea in response to two experimentally simulated and one category 4 hurricane (Maria, 2017). In the Fern Demography study, differences between fertile and sterile leaf production rates and plant leaf count of S. deltoidea were significant while leaf lengths and lifespans did not differ between leaf types. Fertile (but not sterile) leaf production increased three-fold after Hurricane Georges but declined 10-fold by the end of the study. Leaf lifespans of cohorts emerging before and in the three years after Hurricane Georges were significantly shortened by tree and debris fall. Elevated production of fertile leaves and increased plant leaf counts followed the two simulated hurricanes of the Canopy Trimming experiment and two natural hurricanes. Steiropteris deltoidea exhibits a level of interannual flexibility in some growth and reproductive traits in response to a changed understory environment that suggests it may be a good indicator species for evaluating microhabitat hurricane effects. Although S. deltoidea exhibited resilience, predicted increases in frequency and magnitude of hurricanes in response to climate change may test the limits of life history strategies of rainforest understory ferns.","PeriodicalId":50817,"journal":{"name":"American Fern Journal","volume":"112 1","pages":"251 - 268"},"PeriodicalIF":0.8,"publicationDate":"2022-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46069495","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}

引用次数: 2

Taxonomy of Cryptic Isoëtes Species from the Brazilian Semi-Arid Region, with a Note about the Putative Maternal Origin of Polyploids 巴西半干旱区隐种Isoëtes的分类及多倍体母系起源的推测

IF 0.8 4区生物学

American Fern Journal Pub Date : 2022-08-19 DOI: 10.1640/0002-8444-112.3.190

Jovani B. S. Pereira, J. Prado

{"title":"Taxonomy of Cryptic Isoëtes Species from the Brazilian Semi-Arid Region, with a Note about the Putative Maternal Origin of Polyploids","authors":"Jovani B. S. Pereira, J. Prado","doi":"10.1640/0002-8444-112.3.190","DOIUrl":"https://doi.org/10.1640/0002-8444-112.3.190","url":null,"abstract":"Abstract. Revealing the unrecognized diversity within cryptic species has profound implications in the taxonomy, systematics, evolutionary studies, and species protections throughout plant groups. Isoëtes is prone to a high rate of cryptic speciation because of its morphological simplicity, stasis, and convergence. Phylogenetic studies revealed cryptic species in the genus from the Brazilian semi-arid region (the Caatinga), which comprises the least studied and most endangered flora in Brazil. Here we conducted morphological analyses and chromosome counts, and took advantage of phylogenetic analyses already published for the genus to provide a taxonomic revision of Isoëtes from the Caatinga. Isoëtes anamariae and I. harleyi are two new species, which were revealed by molecular data and subtle morphological characters. This study provides descriptions, chromosome counts, illustrations of the most important morpho-taxonomic characters of species from the Caatinga, and a key to identify them. All species from this region are diploid and we show the importance of diploids in detangling the origin of polyploids in Brazil.","PeriodicalId":50817,"journal":{"name":"American Fern Journal","volume":"112 1","pages":"190 - 206"},"PeriodicalIF":0.8,"publicationDate":"2022-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42546958","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}

引用次数: 1

Phylogenetic Relationships of Grammitid Fern Diversity of Gunung Tama Abu (Sarawak) 古农·塔玛·阿布（砂拉越）禾本科蕨类植物多样性的系统发育关系

IF 0.8 4区生物学

American Fern Journal Pub Date : 2022-08-19 DOI: 10.1640/0002-8444-112.3.207

Hong‐Mei Liu, D. Cicuzza, B. Parris, Harald Schneider

{"title":"Phylogenetic Relationships of Grammitid Fern Diversity of Gunung Tama Abu (Sarawak)","authors":"Hong‐Mei Liu, D. Cicuzza, B. Parris, Harald Schneider","doi":"10.1640/0002-8444-112.3.207","DOIUrl":"https://doi.org/10.1640/0002-8444-112.3.207","url":null,"abstract":"Abstract. The forests of Borneo are famous for their plant diversity, but this diversity is seriously threatened. Despite remarkable progress, the taxonomic status and geographic distribution of many species have not been clarified. Here, we explore the use of DNA barcoding to improve not only the recording of local species diversity, but also our understanding of the fern Tree-of-Life. We focused specifically on grammitid ferns collected at Gunung Tama Abu in Sarawak. The four new samples comprised three species of which two were studied using molecular phylogenetics for the first time. These three species were found to be nested in clades corresponding to the established generic taxonomy. The two sampled accessions of Acrosorus streptophyllus formed a sister clade to A. friderici-et-pauli. By increasing the inclusion of Acrosorus species from one to two in the assembled phylogenetic hypothesis, our results provide support to the monophyly of this genus based on DNA sequence data for the first time. The newly sampled Borneo accession of Scleroglossum pyxidatum was sister to a clade comprising accessions of S. sulcatum, whereas the sample of Prosaptia alata formed a clade together with other accessions of this species. In conclusion, DNA barcoding of samples obtained during fieldwork in remote but species rich places enhance the recording of the Tree-of-Life and enable the establishment of reliable DNA barcodes for species rich lineages.","PeriodicalId":50817,"journal":{"name":"American Fern Journal","volume":"112 1","pages":"207 - 220"},"PeriodicalIF":0.8,"publicationDate":"2022-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47390060","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}

引用次数: 1

Ethnobotany and Vernacular Names of the Lycophytes and Ferns of Tafea Province, Vanuatu 瓦努阿图塔菲亚省石松和蕨类植物的民族植物学和方言名称

IF 0.8 4区生物学

American Fern Journal Pub Date : 2022-08-19 DOI: 10.1640/0002-8444-112.3.143

T. Ranker, M. Balick, G. Plunkett, K. Harrison, Jean-Pascal Wahe, Martial Wahe

引用次数: 0

Memorial: Ralph James Hickey (1950–2020) 纪念馆：拉尔夫·詹姆斯·希基（1950–2020）

IF 0.8 4区生物学

American Fern Journal Pub Date : 2022-08-19 DOI: 10.1640/0002-8444-112.3.221

Michael A. Vincent, Melanie A. Link‐Pérez

引用次数: 0

Two New Species of Thelypteridaceae from the Solomon Islands 标题所罗门群岛蕨科两新种