Plant Ecology and Evolution最新文献_第8页

Analysis of the type material of Gomphosphenia tackei (Bacillariophyceae) and comparison to epizoic diatom populations on freshwater snails 淡水蜗牛上贡氏硅藻的类型物质分析及动物硅藻种群的比较

IF 1.1 4区生物学

Plant Ecology and Evolution Pub Date : 2021-06-24 DOI: 10.5091/plecevo.2021.1750

Mateusz Rybak, Łukasz Peszek, A. Poradowska

{"title":"Analysis of the type material of Gomphosphenia tackei (Bacillariophyceae) and comparison to epizoic diatom populations on freshwater snails","authors":"Mateusz Rybak, Łukasz Peszek, A. Poradowska","doi":"10.5091/plecevo.2021.1750","DOIUrl":"https://doi.org/10.5091/plecevo.2021.1750","url":null,"abstract":"Background and aims – Hustedt (1942) originally described Gomphosphenia tackei from Germany under the name Gomphonema tackei. Because of the small cell size and the lack of scanning electron microscopy (SEM) images from the type material, it is often confused with other species from this genus, especially with G. stoermeri. The aim of this paper was to present detailed morphological characteristics of G. tackei based on the analysis of the type material and of several epizoic populations from Central Europe. Material and methods – The material in this study was collected from the shells of the freshwater snails Lymnaea stagnalis, Planorbarius corneus, and Planorbis planorbis. Additionally, for an unambiguous species identification, the type material for Gomphosphenia tackei was analyzed using light and scanning electron microscopes.Key results – The presence of Gomphosphenia tackei was confirmed in the studied material. The largest population (up to 19%) was recorded on the shell surfaces of living snails, whereas on empty shells, the diatom did not seem to be present or only in very low numbers. Valves are typically clavate with rounded apices. Valves are frequently observed in girdle view, often joint together in pairs. The valves in the studied populations had a valve length of 7–29 µm, a valve width of 3–4 µm, and a stria density of 25–29 striae in 10 µm. In the type population, valve length ranged from 7.5 to 27 µm with a valve width of 3.0–4.0 µm and a stria density of 23–29 striae per 10 µm. Striae were composed of 2–4 elongated to rounded areolae per stria. At the apices, the striae were composed of one single areola. The cells were attached to the substratum by their footpole.Conclusion – Published illustrations of Gomphosphenia tackei do not always correctly represent this species. Individual cells are attached to the substratum by secreted mucilage, probably via their areolae or girdle band pores located on the footpole.","PeriodicalId":54603,"journal":{"name":"Plant Ecology and Evolution","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47330833","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

Identity of the subalpine–subarctic corticioid fungus Megalocystidium leucoxanthum (Russulales, Basidiomycota) and six related species 亚高山-亚北极类皮质真菌Megalocystidium leucoxanthum（Russelles，担子菌门）和六个相关物种的鉴定

IF 1.1 4区生物学

Plant Ecology and Evolution Pub Date : 2021-06-24 DOI: 10.5091/plecevo.2021.1857

V. Spirin, S. Volobuev, V. Malysheva, O. Miettinen, H. Kotiranta, K. Larsson

{"title":"Identity of the subalpine–subarctic corticioid fungus Megalocystidium leucoxanthum (Russulales, Basidiomycota) and six related species","authors":"V. Spirin, S. Volobuev, V. Malysheva, O. Miettinen, H. Kotiranta, K. Larsson","doi":"10.5091/plecevo.2021.1857","DOIUrl":"https://doi.org/10.5091/plecevo.2021.1857","url":null,"abstract":"Background and aims – To date, Megalocystidium leucoxanthum, a corticioid fungus originally described from the Italian Alps, was considered as a widely distributed species inhabiting numerous angiosperm hosts in the northern hemisphere. Its specimens collected in different geographic areas and from various host species revealed a high morphological variability and thus obfuscated differences from the closely related M. luridum. The objective of this study was to re-establish M. leucoxanthum based on newly collected and sequenced specimens and clarify the identity of morphologically deviating collections previously ascribed to this species.Material and methods – In total, 87 specimens of Megalocystidium spp. (including two historical types) were studied by morphological methods. Their phylogenetic relations were investigated based on DNA sequences (nrITS, nrLSU, and tef1) of 29 specimens.Key results – Based on morphological, ecological and DNA data, we showed M. leucoxanthum sensu typi is a rare species restricted to Alnus alnobetula in subalpine and subarctic zones. Consequently, records from other hosts (mostly representatives of Salicaceae) belong to three other species, M. olens, M. perticatum, and M. salicis, described as new to science. The fourth newly introduced species, M. pellitum, occurs on the same host tree as M. leucoxanthum but it can be separated from the latter due to distinctive morphological traits and DNA sequences. Additionally, Aleurodiscus diffissus is combined in Megalocystidium and the identity of M. luridum is clarified.","PeriodicalId":54603,"journal":{"name":"Plant Ecology and Evolution","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47262004","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

Further new species and records from the coastal dry forests and woodlands of the Rovuma Centre of Endemism – Erratum 鲁乌玛特有中心沿海干燥森林和林地的更多新种和记录-勘误

IF 1.1 4区生物学

Plant Ecology and Evolution Pub Date : 2021-06-24 DOI: 10.5091/plecevo.2021.1878

I. Darbyshire, D. Goyder, J. R. Wood, Aurélio Banze, J. Burrows

引用次数: 0

Five new species of Streptocarpus (Gesneriaceae) from Katanga, D.R. Congo 刚果(金)加丹加链藻属(苦苣苔科)五新种

IF 1.1 4区生物学

Plant Ecology and Evolution Pub Date : 2021-06-24 DOI: 10.5091/plecevo.2021.1824

E. Fischer, I. Darbyshire

{"title":"Five new species of Streptocarpus (Gesneriaceae) from Katanga, D.R. Congo","authors":"E. Fischer, I. Darbyshire","doi":"10.5091/plecevo.2021.1824","DOIUrl":"https://doi.org/10.5091/plecevo.2021.1824","url":null,"abstract":"Background and aims – Five new species of Streptocarpus (Gesneriaceae) are described from D.R. Congo in connection with preparing the family treatment for the Flore d’Afrique centrale.Methods – Standard herbarium practices were applied.Key results – Streptocarpus malachiticola sp. nov. is related to S. compressus and S. goetzei while S. bampsii sp. nov., S. malaissei sp. nov., S. salesianorum sp. nov., and S. schaijesii sp. nov. are related to S. michelmorei and S. solenanthus. The differences with these species are discussed and distribution maps for the new taxa are presented. An identification key for all known acaulescent species from D.R. Congo, Rwanda, and Burundi is provided. The conservation status of new species is preliminarily assessed. All taxa are range-restricted in Upper Katanga and the assessments are as follows: S. malachiticola: EN B1+2ab(iii), S. bampsii: CR B2ab(iii), S. malaissei: EN B1+2ab(iii), S. salesianorum: CR B2ab(iii), and S. schaijesii: EN B2ab(iii). Streptocarpus malachiticola is found on metalliferous rocks while the remaining species are either epiphytes in gallery forests (S. bampsii) or occur on humid rocks in gallery forests.","PeriodicalId":54603,"journal":{"name":"Plant Ecology and Evolution","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41577134","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

Anemopaegma kawense (Bignoniaceae), a new species from the Kaw Mountain (French Guiana), with notes on related species and a key to the genus in the Guianas 法属圭亚那法属圭亚那法属圭亚那法属圭亚那法属圭亚那山麻麻属一新种。附近缘种记述和麻麻属检索表

IF 1.1 4区生物学

Plant Ecology and Evolution Pub Date : 2021-06-24 DOI: 10.5091/plecevo.2021.1775

O. Lachenaud, Fabiana Firetti, L. Lohmann

{"title":"Anemopaegma kawense (Bignoniaceae), a new species from the Kaw Mountain (French Guiana), with notes on related species and a key to the genus in the Guianas","authors":"O. Lachenaud, Fabiana Firetti, L. Lohmann","doi":"10.5091/plecevo.2021.1775","DOIUrl":"https://doi.org/10.5091/plecevo.2021.1775","url":null,"abstract":"Background and aims – The genus Anemopaegma (Bignoniaceae) includes around 47 species and has its centre of diversity in Brazil. Here, we describe and illustrate a new species from French Guiana, Anemopaegma kawense, and compare it to the two most similar species, A. foetidum and A. granvillei. We further assess the conservation status of all three species.Material and methods – Morphological descriptions are based on herbarium specimens deposited at BM, BR, CAY, INPA, K, MO, P, SPF, and U, and, in the case of the newly described species, also on field observations. The conservation status assessments follow the IUCN Red List criteria.Key results – Anemopaegma kawense differs from both A. foetidum and A. granvillei by its densely villose twigs, longitudinally plicate leaflets with secondary veins not or hardly prominent below, and tertiary veins impressed below. It is further separated from A. foetidum by the leaflets that are villose below and the calyx that is entirely pubescent outside. On the other hand, A. kawense differs from A. granvillei by the densely lepidote outer surface of the corolla, shorter petiolules, leaflets with midrib impressed above, shorter bracts and bracteoles, inflorescence peduncle exceeding the rachis, and pedicels densely puberulous, not lepidote or only sparsely so at the apex. This species is endemic to the Kaw Mountain in north-eastern French Guiana, where it grows in low stunted forest on laterite; it is assessed as Endangered according to the IUCN criteria. New descriptions are provided for A. granvillei, which is newly reported from Suriname, and for A. foetidum, which is newly reported from French Guiana; these two species are assessed as Endangered and Least Concern, respectively. Lectotypes are designated for A. maguirei, which is here synonymised with A. foetidum, and for A. umbellatum, another synonym of that species. A key to the 12 species of Anemopaegma occurring in the Guianas is presented.","PeriodicalId":54603,"journal":{"name":"Plant Ecology and Evolution","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43239586","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

Nocturnal and diurnal pollination in Copaifera coriacea, a dominant species in sand dunes of the Middle São Francisco River Basin, Northeastern Brazil 巴西东北部São Francisco河流域中部沙丘的优势物种coriacea的夜间和日间授粉

IF 1.1 4区生物学

Plant Ecology and Evolution Pub Date : 2021-06-24 DOI: 10.5091/plecevo.2021.1715

I. M. Souza, F. M. Hughes, L. S. Funch, L. P. Queiroz

{"title":"Nocturnal and diurnal pollination in Copaifera coriacea, a dominant species in sand dunes of the Middle São Francisco River Basin, Northeastern Brazil","authors":"I. M. Souza, F. M. Hughes, L. S. Funch, L. P. Queiroz","doi":"10.5091/plecevo.2021.1715","DOIUrl":"https://doi.org/10.5091/plecevo.2021.1715","url":null,"abstract":"Background and aims – Copaifera coriacea, a species in the resin-producing clade Detarioideae (Leguminosae), is an endemic and abundant species found in sand dunes in Brazilian Caatinga domain vegetation – a Quaternary paleodesert. We investigated floral traits and aspects of pollination biology, focusing on the pollination system of C. coriacea. Material and methods – Anthesis duration, stigma receptivity, pollen viability, nectar concentration, and the presence of osmophores and pigments reflecting UV light were assessed. Floral visitors were classified as potential pollinators, occasional pollinators or thieves, based on the time and foraging behaviour and resource collected. Pollination effectiveness were assessed for potential pollinators by the detection of pollen tubes on the stigma or stylar canal by epifluorescence microscopy.Key results – The species has white and small flowers, with anthesis beginning in the dark (ca 00:30) and the flowers are completely opened approximately 3 h later, when a sweet odour is perceptible. The onset of stigma receptivity and pollen grain viability occurs only after the completion of flower opening, and a concentrated nectar is available during the day. The presence of pollen tubes confirmed the efficiency of the main insects in the transfer of pollen. Conclusion – Our result demonstrates that C. coriacea has a generalist pollination system mediated mainly by two distinct guilds of insect pollinators: moths (nocturnal, searching for nectar) and bees (diurnal, pollen collectors). This finding can provide more information about diversification in the genus Copaifera.","PeriodicalId":54603,"journal":{"name":"Plant Ecology and Evolution","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45834422","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

Orophea sichaikhanii (Annonaceae), a new species from southern Thailand, with a key to the species of Orophea in Thailand and notes on some species 番荔枝科番荔枝属（Orophea sichaikhani），是泰国南部的一个新种，是泰国番荔枝属的一个关键种，并对一些种进行了注释

IF 1.1 4区生物学

Plant Ecology and Evolution Pub Date : 2021-06-24 DOI: 10.5091/plecevo.2021.1780

Anissara Damthongdee, Kithisak Aongyong, T. Chaowasku

{"title":"Orophea sichaikhanii (Annonaceae), a new species from southern Thailand, with a key to the species of Orophea in Thailand and notes on some species","authors":"Anissara Damthongdee, Kithisak Aongyong, T. Chaowasku","doi":"10.5091/plecevo.2021.1780","DOIUrl":"https://doi.org/10.5091/plecevo.2021.1780","url":null,"abstract":"Background and aims – Recent botanical expeditions in Ranong Province, southern Thailand yielded unidentifiable collections of Orophea subgenus Sphaerocarpon (Annonaceae). To elucidate the taxonomic status of these collections, detailed morphological examinations and comparisons with morphologically similar species are made.Material and methods – This study followed standard practices of herbarium taxonomy. Specimens of Orophea spp. in BKF, CMUB, L, and QBG herbaria were studied. Digitised type specimens deposited in BM, E, G, K, and L herbaria were accessed. A stereo microscope was used for morphological observations and measurements. Key results – A new species Orophea sichaikhanii is described and illustrated. The Peninsular Malaysian O. hastata and O. kingiana are the species most similar to the new species. Orophea sichaikhanii is different from O. hastata in several traits: indumentum on ovaries and young twigs; length of pedicels, inner petals, and inner petal claw; and inner petal colour and tip. The new species differs from O. kingiana by having dissimilar colour and tip of inner petals; lower number of stamens and carpels per flower; and glabrous ovaries. Additionally, a key to the species of Orophea in Thailand and notes on certain species are provided.","PeriodicalId":54603,"journal":{"name":"Plant Ecology and Evolution","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46566109","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

The phytogeography of moist forests across Eastern Zimbabwe 津巴布韦东部潮湿森林的植物地理

IF 1.1 4区生物学

Plant Ecology and Evolution Pub Date : 2021-06-24 DOI: 10.5091/plecevo.2021.1814

J. Timberlake, F. Dowsett-Lemaire, T. Muller

{"title":"The phytogeography of moist forests across Eastern Zimbabwe","authors":"J. Timberlake, F. Dowsett-Lemaire, T. Muller","doi":"10.5091/plecevo.2021.1814","DOIUrl":"https://doi.org/10.5091/plecevo.2021.1814","url":null,"abstract":"Background and aims – During the 1970s, a comprehensive survey of moist forest areas across Zimbabwe’s Eastern Highlands was carried out, from Nyanga in the north to Chirinda Forest in the south. All tree stems 8 cm diameter or greater in both canopy and sub-canopy layers were measured in 176 quarter-hectare plots, and plots were then classified into 12 altitude-related forest types. The aim of the present study is to categorise the woody species recorded in these plots in terms of their chorological status. The findings are compared to similar analyses from moist forests across Malawi.Material and methods – All tree species recorded during the initial survey were listed and placed into 12 described chorological (phytogeographical) categories based on their continental distribution. Their occurrence across the 12 previously described forest types is given. Key results and conclusions – A total of 211 tree species was recorded from 176 plots. Most species (86, or 40.8%) are Afromontane endemics or near-endemics, while 48 species (22.7%) are Guineo-Congolian linking, 31 (14.7%) are Eastern endemic or near-endemics, and 16 (7.6%) are sub-Afromontane endemics or near-endemics. The remainder comprise African linking and Zambezian species. This shows that species of the moist forests of eastern Zimbabwe form a complex phytogeographical mix. While Afromontane species dominate at high altitudes, Guineo-Congolian and Eastern species become more common at lower altitudes. In terms of proportions of chorological categories, results were found to be similar to those from forest studies in Malawi.","PeriodicalId":54603,"journal":{"name":"Plant Ecology and Evolution","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48888696","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

An update of the Verbenaceae genera and species numbers 标题马鞭草科属和种数的更新

IF 1.1 4区生物学

Plant Ecology and Evolution Pub Date : 2021-03-23 DOI: 10.5091/10.5091/PLECEVO.2021.1821

P. Cardoso, N. O’Leary, R. Olmstead, P. Moroni, Verônica A. Thode

引用次数: 21

Our contribution to documenting biodiversity in a changing world 我们为记录不断变化的世界中的生物多样性所做的贡献

IF 1.1 4区生物学

Plant Ecology and Evolution Pub Date : 2021-03-23 DOI: 10.5091/PLECEVO.2021.1858

B. Verstraete

引用次数: 0