American Fern Journal最新文献_第5页

What are the mental health consequences of austerity measures in public housing? A quasi-experimental study. 公共住房紧缩措施对心理健康有何影响？一项准实验研究。

4区生物学

American Fern Journal Pub Date : 2022-06-15 DOI: 10.1136/jech-2021-218324

Chungah Kim, Celine Teo, Andrew Nielsen, Antony Chum

{"title":"What are the mental health consequences of austerity measures in public housing? A quasi-experimental study.","authors":"Chungah Kim, Celine Teo, Andrew Nielsen, Antony Chum","doi":"10.1136/jech-2021-218324","DOIUrl":"10.1136/jech-2021-218324","url":null,"abstract":"Background: As governments around the world implement austerity measures to reduce national deficits, there is an urgent need to investigate potential health impacts of specific measures to avoid unintended consequences. In 2013, the UK government implemented the underoccupancy penalty (ie, the bedroom tax) to reduce the national housing benefits bill, by cutting social housing subsidies for households deemed to have excess rooms. We investigated the impact of the bedroom tax on self-reported psychological distress.Methods: Using data from the UK Household Longitudinal Study (2010-2014), the sample included those who received housing subsidies, aged 16-60, living in England. Control and treatment groupings were identified on their household composition and housing situation. We used matching methods to create an exchangeable set of observations. Difference-in-differences analysis was performed to examine changes across the prereform and postreform psychological distress of the treatment and control groups, using the 12-item General Health Questionnaire.Results: The implementation of the reform was associated with a moderate increase in psychological distress (0.88, 95% CI 0.06 to 1.71) among the treatment group, relative to the control group. However, the announcement was not associated with change in psychological distress (0.53, 95% CI 0.21 to 1.27).Conclusion: Our study provides evidence that the implementation of housing austerity measures can increase psychological distress among social housing tenants. As the use of austerity measures become more widespread, policy-makers should consider supplementary interventions to ameliorate potential negative health consequences.","PeriodicalId":50817,"journal":{"name":"American Fern Journal","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90261860","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

Gametophyte Development of Karst- and Danixa-Specific Species of Adiantum Series Gravesiana (Pteridaceae) from China 中国蕨类属喀斯特和达尼沙特有种配子体发育

IF 0.8 4区生物学

American Fern Journal Pub Date : 2022-04-26 DOI: 10.1640/0002-8444-112.2.105

XIAO-LING Yu, A. Harris, Lingyun Nie, Ai-Hua Wang, Yan-Yan Liu, FA-GUO Wang

{"title":"Gametophyte Development of Karst- and Danixa-Specific Species of Adiantum Series Gravesiana (Pteridaceae) from China","authors":"XIAO-LING Yu, A. Harris, Lingyun Nie, Ai-Hua Wang, Yan-Yan Liu, FA-GUO Wang","doi":"10.1640/0002-8444-112.2.105","DOIUrl":"https://doi.org/10.1640/0002-8444-112.2.105","url":null,"abstract":"Abstract. The ferns of Adiantum Series Gravesiana (Pteridaceae) consist of species that occur exclusively on Danxia (A. juxtapositum) and Karst (A. mariesii, A. longzhouensis, A. dentatum, A. obovatum, and A. gravesii) landforms. We cultured representatives of these six species from 20 different populations on both agar and soil to investigate and compare their gametophyte development. All species had the Vittaria-type pattern of spore germination except A. obovatum, for which we missed the best time to observe this developmental phase. However, two different patterns of subsequent development were observed: the Adiantum-type (i.e., naked, cordate mature gametophyte thallus) in A. mariesii, A. longzhouensis, A. juxtapositum, and A. gravesii and the Kaulinia-type (i.e., naked, ribbon-shaped mature gametophyte thallus) in A. dentatum and A. obovatum. All populations from A. juxtapositum and A. gravesii possess the same Adiantum-type, suggesting that Karst and Danxia soils were not the main factor causing the differences in gametophyte development. The Kaulinia-type adult thallus has not been observed previously in Adiantum and may be an adaptive strategy for survival within the relatively harsh micro-habitats experienced by A. dentatum and A. obovatum compared to other members of this series.","PeriodicalId":50817,"journal":{"name":"American Fern Journal","volume":"112 1","pages":"105 - 123"},"PeriodicalIF":0.8,"publicationDate":"2022-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47332721","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

Characterizing Culturable Bacterial Endophytes of Five Lycopodiaceae Species 五种石松科植物可培养细菌内生菌的鉴定

IF 0.8 4区生物学

American Fern Journal Pub Date : 2022-04-26 DOI: 10.1640/0002-8444-112.2.79

A. Petlewski, Ariel Patterson, Fay-Wei Li

引用次数: 0

Notes on Menisciopsis wailele (Thelypteridaceae), a Critically Endangered Rheophytic Fern Species from Kaua‘i, Hawaiian Islands 夏威夷群岛考艾岛一种极度濒危的Rheophytic蕨类植物Menisciopsis waillee（Thelypteridaceae）的注释

IF 0.8 4区生物学

American Fern Journal Pub Date : 2022-04-26 DOI: 10.1640/0002-8444-112.2.124

K. R. Wood, S. Fawcett

引用次数: 0

SHORTER NOTE 短音符

IF 0.8 4区生物学

American Fern Journal Pub Date : 2022-04-26 DOI: 10.1640/0002-8444-112.2.139

Michal Handel

引用次数: 0

Association of Epiphytic Fern Vittaria lineata with Moss Octoblepharum albidum on Palm Sabal palmetto in Southeast Florida, with Notes on Accompanying Fern Phlebodium aureum 佛罗里达东南部棕榈上附生蕨类Vittaria lineata与苔藓Octoblepharum albidum的关联及其伴生蕨类Phlebodium aureum的注释

IF 0.8 4区生物学

American Fern Journal Pub Date : 2022-04-26 DOI: 10.1640/0002-8444-112.2.93

G. Rogers

{"title":"Association of Epiphytic Fern Vittaria lineata with Moss Octoblepharum albidum on Palm Sabal palmetto in Southeast Florida, with Notes on Accompanying Fern Phlebodium aureum","authors":"G. Rogers","doi":"10.1640/0002-8444-112.2.93","DOIUrl":"https://doi.org/10.1640/0002-8444-112.2.93","url":null,"abstract":"Abstract. In southeast Florida an association between the shoestring fern (Vittaria lineata) and the pantropical moss Octoblepharum albidum is conspicuous on cabbage palm (Sabal palmetto) trunks. As determined from quadrat studies, for maturing sporophytes, but not for gametophytes and tiny sporophytes, the frequency of association exceeded that expected by chance. The positive association suggests the moss facilitates the fern sporophytes. Based on a literature review and on new observations, the structure of the moss and its intimate relationship with V. lineata roots is consistent with the moss serving as a water-retentive “mulch” for V. lineata. In different habitats V. lineata can associate alternatively with the moss Syrrhopodon incompletus, and it sometimes grows on decaying petiole-base remnants or in petiole-base axils with no moss association. The only vascular epiphyte competing with V. lineata locally is the fern Phlebodium aureum. The lengths of its leaf blades, but not those of V. lineata, correlate with the lengths of immediately adjacent S. palmetto petiole-stumps. Phlebodium aureum is prominent where the stumps are long, whereas V. lineata dominates in trunk regions having no or small petiole-stumps, where it usually associates with O. albidum.","PeriodicalId":50817,"journal":{"name":"American Fern Journal","volume":"112 1","pages":"93 - 104"},"PeriodicalIF":0.8,"publicationDate":"2022-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43010566","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

Morphology of Mycosis Fungoides and Sézary Syndrome in Skin of Color. 肤色皮肤真菌病和塞扎里综合征的形态学。

IF 2.1 4区生物学

American Fern Journal Pub Date : 2022-03-01 DOI: 10.12788/cutis.0484

Maria L Espinosa, Christina J Walker, Joan Guitart, Julia M Mhlaba

引用次数: 0

Potential Desiccation Tolerance Shown in Cheilanthes ecuadorensis (Pteridaceae) 欧洲紫檀（Pteridae）潜在的耐旱性

IF 0.8 4区生物学

American Fern Journal Pub Date : 2022-02-01 DOI: 10.1640/0002-8444-112.1.73

Karla Sosa

{"title":"Potential Desiccation Tolerance Shown in Cheilanthes ecuadorensis (Pteridaceae)","authors":"Karla Sosa","doi":"10.1640/0002-8444-112.1.73","DOIUrl":"https://doi.org/10.1640/0002-8444-112.1.73","url":null,"abstract":"Potential Desiccation Tolerance Shown in Cheilanthes ecuadorensis (Pteridaceae).—Having enough water for survival is one of the restrictions with which organisms must cope. Many strategies have evolved that allow organisms to survive in low-water conditions. Among plants, one such strategy is desiccation tolerance: the ability to survive an almost complete loss of water in photosynthetic tissues (Walter, Annual Review of Plant Physiology 6:239–252. 1955; Schwab & Heber, Planta 161:37–45. 1984; Gaff, in Structural and Functional Responses to Environmental Stresses, 225–268. 1989; Rascio & La Rocca, Critical Reviews in Plant Sciences 24:209–255. 2005), a strategy that is also found in other organisms such as lichens. Although desiccation tolerance is likely the ancestral state for all land plants (Gaff & Oliver, Functional Plant Biology 40:315–328. 2013), vegetative desiccation tolerance has arisen multiple times since their move to land (Oliver et al., Plant Ecology 151:85–100. 2000; Oliver et al., Integrative and Comparative Biology 45:788– 799. 2005; Kirkpatrick, PhD Dissertation. 2008). It remains broadly uncommon, except in certain groups such as bryophytes (Proctor et al., The Bryologist 110:595–621. 2007). However, it appears to be relatively common in the xericadapted members of Pteridaceae (i.e., cheilanthoid ferns), being reported in several species of Astrolepis (Kirkpatrick, PhD Dissertation. 2008), Cheilanthes s.l. (Gaff, Oecologia 74:133–136. 1987; Proctor & Tuba, New Phytologist 156:327–349. 2002; Kirkpatrick, PhD Dissertation. 2008), Notholaena (Kessler & Siorak, American Fern Journal 97:175–185. 2007) and Pellaea, as well as in Argyrochosma fendleri and Bommeria hispida (Kirkpatrick, PhD Dissertation. 2008). Here I present a further record of potential desiccation tolerance exhibited in cheilanthoid ferns, describing very broadly time to desiccation and recovery in Cheilanthes ecuadorensis Windham & K.Sosa, a recently described species from Ecuador that is known only from herbarium specimens (Sosa et al., Systematic Botany 46:249–259. 2021).","PeriodicalId":50817,"journal":{"name":"American Fern Journal","volume":"112 1","pages":"73 - 77"},"PeriodicalIF":0.8,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47588987","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

More on the Spread of Nonnative Ferns in Georgia and the Southeastern United States 更多关于非本地蕨类植物在佐治亚州和美国东南部的传播

IF 0.8 4区生物学

American Fern Journal Pub Date : 2022-02-01 DOI: 10.1640/0002-8444-112.1.36

R. Wyatt, R. Harris

{"title":"More on the Spread of Nonnative Ferns in Georgia and the Southeastern United States","authors":"R. Wyatt, R. Harris","doi":"10.1640/0002-8444-112.1.36","DOIUrl":"https://doi.org/10.1640/0002-8444-112.1.36","url":null,"abstract":"Abstract. Relative to other vascular plants, ferns have been overlooked with respect to the potential for nonnatives to spread into natural areas and potentially displace native species. An unusual site in the Piedmont of northeast Georgia was found to harbor two species of nonnative ferns that have clearly become naturalized. A third species at the site represents the appearance in a natural setting of another nonnative fern species whose cultivars and hybrids are being more widely planted as ornamentals. Examination of herbarium specimens from Georgia and the Southeastern United States clarified the status of some earlier records and some overlooked records, based on misidentifications or questionable status as naturalized. The species involved (Arachniodes simplicior, Polystichum polyblepharum, and Anisocampium niponicum (=Athyrium niponicum)) are all introductions from temperate regions in East Asia and probably represent escapes from cultivation via spores. The appearance of these species in natural communities raises questions about their potential to spread farther and to become pests by crowding out native flora. The invasive potential of these three species and five other species discussed in a previous paper is evaluated based on field observations as well as information about their status as an epiphyte or ground dweller, reproductive plasticity, ecological requirements, and popularity as horticultural ornamentals.","PeriodicalId":50817,"journal":{"name":"American Fern Journal","volume":"112 1","pages":"36 - 49"},"PeriodicalIF":0.8,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43432870","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

Influence of Increasing Nutrient Availability on Fern and Lycophyte Diversity 提高养分有效性对蕨类和石松类植物多样性的影响

IF 0.8 4区生物学

American Fern Journal Pub Date : 2022-02-01 DOI: 10.1640/0002-8444-112.1.17

Anna Weigand, J. Homeier, M. Lehnert, M. Kessler

{"title":"Influence of Increasing Nutrient Availability on Fern and Lycophyte Diversity","authors":"Anna Weigand, J. Homeier, M. Lehnert, M. Kessler","doi":"10.1640/0002-8444-112.1.17","DOIUrl":"https://doi.org/10.1640/0002-8444-112.1.17","url":null,"abstract":"Abstract. Increased nutrient supply can have drastic effects on natural ecosystems, especially in naturally nutrient-poor ones such as most tropical rainforests. Many studies have focused on the reaction of trees to fertilization, but little is known about herbaceous plants. Ferns are a particularly common group in tropical forests, spanning all vegetation types and zones. Here, we assess how seven years of moderate addition of nitrogen (N), phosphorus (P), and N+P along an elevational gradient (1000–3000 m) have impacted richness and composition of fern and lycophyte assemblages in tropical montane rain forests growing on naturally nutrient deficient soils in the Ecuadorian Andes. We found that fertilization does not affect overall species richness, but that there were strong differences in species abundances (∼60% of species), both negative and positive, that were apparently related to the systematic affiliations and ecological properties of the affected species. These diverse responses of ferns to fertilization provide insight into the sensitivity and complexity of the relationships of nutrient availability and community composition in tropical forests.","PeriodicalId":50817,"journal":{"name":"American Fern Journal","volume":"112 1","pages":"17 - 35"},"PeriodicalIF":0.8,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46646859","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