Mediterranean Botany最新文献

{"title":"Mechanical stimulation of the stigmas triggers switch from female to male phase in the protogynous trap flower of Aristolochia rotunda (Aristolochiaceae)","authors":"Rumsaïs Blatrix, Aroonrat Kidyoo, Inès Matrougui, Paradorn Samsungnoen, Doyle McKey, Magali Proffit","doi":"10.5209/mbot.85906","DOIUrl":"https://doi.org/10.5209/mbot.85906","url":null,"abstract":"Floral longevity is a selected trait that shows plasticity, allowing plants to balance resource allocation and reproduction. In dichogamous flowers—in which female and male functions are decoupled in time—the duration of the female phase is expected to vary according to pollination status. We used Aristolochia rotunda as a model to test the hypothesis that the female phase should be shortened following pollen deposition on the stigma, and to identify the signal for phase switching. Aristolochia flowers are protogynous (female phase first) and trap pollinators for several days (trap flowers). The four experimental treatments we applied to flowers, i.e. hand pollination, presence of pollinators with or without pollen load in the flower, and deposition of a nylon thread on the stigma, shortened the female phase to a similar extent, demonstrating that the duration of the female phase depended on the presence of pollinators, independently of whether or not they carried pollen, and that mechanical stimulation of the stigmas was the signal for phase switching. Temperature was also shown to shorten the female stage. This mechanism of post-anthesis floral changes is original because usually such changes are triggered by chemical interactions between pollen and stigmas. We interpret the mechanical signal used in A. rotunda for phase switching to be adaptive when pollinators are limiting, because switching to the male phase even if the trapped pollinator does not bring pollen would ensure fulfilling the flower’s male function.","PeriodicalId":54240,"journal":{"name":"Mediterranean Botany","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135618925","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}

{"title":"Vegetation on expansive clay soils from Madrid and La Sagra region (Madrid-Toledo, Spain)","authors":"Enrique Luengo, Rosina Magaña Ugarte, Juan Manuel Martínez Labarga, Rubén De Pablo Sanz, Daniel Sánchez-Mata","doi":"10.5209/mbot.87773","DOIUrl":"https://doi.org/10.5209/mbot.87773","url":null,"abstract":"Soils rich in expansive clays (i.e., smectite and montmorillonite, and, to a lesser extent, soft clays such as sepiolite and palygorskite) are found in a broad stretch running NNE-SSW from the east of Madrid to the Tagus River surrounds in the province of Toledo. These clays tend to give rise to a specific type of soil, known as \"vertisols\" or related argillic soils with vertic behaviour, varied chemical and sedimentological composition, and occasionally siliceous or dolomitic clasts. In these soils, where there is an absence of woody vegetation, the colonising nitrophilous vegetation becomes of particular interest through the usage and alteration of the land. These argillic soil plant communities are incredibly diversified, with flora suited to the unique hydrogeochemical conditions of these settings. The variety of these plant communities is determined by factors such as land use, lithology, terrain, and the level of humidity they can withstand. We identify the primary plant community on the Madrid-Toledo expansive clays in this paper, as well as provide a preliminary approach to the different varieties and transitions to other related plant communities. The main dynamic and catena links are established, and a floristically summarised table is provided, along with a descriptive examination of the community's behaviour and variability. Finally, its conservation status and the high degree of threat to which it is subjected are assessed.","PeriodicalId":54240,"journal":{"name":"Mediterranean Botany","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135619339","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}

{"title":"Bioclimatic characterisation of the Subtropical Mountain Forests of Yungas at the northern extreme of Argentina: Sierras de Tartagal, Alto Macueta and del Alto Rio Seco (Salta Province)","authors":"Maria Soledad Villalba, Gabriela Entrocassi, Eduardo Martínez Carretero","doi":"10.5209/mbot.87801","DOIUrl":"https://doi.org/10.5209/mbot.87801","url":null,"abstract":"The Subtropical Mountain Forests or Yungas at the northern extreme of Argentina (Sierras de Tartagal, Alto Macueta and del Alto Río Seco, Salta Province) were bioclimatically characterized for the first time. In this study, the methodology of the Bioclimatic Classification of Earth was applied. Twelve Temperature and Precipitation climatic parameters were used and three bioclimatic indices corresponding to 54 Bioclimatic Reference Localities (BRL) established in the study area were also calculated. From them we determined the bioclimatic units of each BRL at the level of Macrobioclimate, Bioclimate, Thermotypes and Ombrotypes. Subsequently, three bioclimatic maps (Bioclimate, Thermotypes and Ombrotypes) and two bioclimatic distribution maps of the forests and its vegetation belt (Premontane Forest and Montane Rainforest) were digitally developed using the QGIS software. The results obtained show that these forests are distributed within the Tropical Macrobioclimate and Tropical Pluviseasonal Bioclimate, with Upper Thermotropical and Lower Mesotropical thermotypes and Lower Subhumid and Upper Subhumid ombrotypes. The lowest vegetation belt, the Premontane Forest, is distributed between (≈400) 429-889 (≈900) m asl and exhibits two thermal variants: the warm Thermotropical Premontane Forest and the more temperate Mesotropical Premontane Forest. The Montane Rainforest is distributed at higher altitudes between (≈900) 965-1178 (≈1200) m als under Lower Mesotropical Thermotype. Both vegetation belts present two ombric variants, whose geographic distribution is determined by the precipitation gradient operating in the region: towards the West, the more humid variants are distributed under the Upper Subhumid ombrotype, while towards the East, the less humid variants are found under Lower Subhumid ombrotype. The present work constitutes the first bioclimatic study carried out in this forest formation applying the methodology of the Bioclimatic Classification of the Earth. It also lays the foundations and contributes whith valuable information to future floristic, vegetational, ecological and biogeographical studies and those focused on the conservation and sustainable management of native forests at the northern extreme of Argentina.","PeriodicalId":54240,"journal":{"name":"Mediterranean Botany","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135618765","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}

{"title":"First finding of an unusual population of Alternanthera in Sicily and considerations on its morphological peculiarities, ecological requirements, and potential invasiveness","authors":"Corrado Marcenò, Duilio Iammonico, Roberto Venanzoni, Ilaria Boschi, Riccardo Guarino","doi":"10.5209/mbot.84939","DOIUrl":"https://doi.org/10.5209/mbot.84939","url":null,"abstract":"An unusual population of Alternanthera was discovered in the South-Eastern part of Sicily. In this paper, we analyze the morphological features of the collected specimens and the ecological features of the community in which they were found. Also, we discuss the taxonomic criticality of the genus and assess the risk that the new finding may become invasive. The species found is a new floristic record for the flora of both Italy and Europe. However, due to the taxonomic criticalities of the whole genus, specific identification cannot be given for certain, and further investigations are needed.","PeriodicalId":54240,"journal":{"name":"Mediterranean Botany","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136308030","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}

{"title":"Syntaxonomical checklist and vegetation series of Sierra de Guadarrama National Park","authors":"Paloma Cantó, Salvador Rivas-Martínez","doi":"10.5209/mbot.84904","DOIUrl":"https://doi.org/10.5209/mbot.84904","url":null,"abstract":"Presentamos la revisión y actualización de las comunidades vegetales y series de vegetación del Parque Nacional de la Sierra de Guadarrama y su área de protección periférica. Se reconocen 131 asociaciones pertenecientes a 40 clases fitosociológicas, distribuidas en 9 grupos de vegetación. Se describen 7 nuevas asociaciones.","PeriodicalId":54240,"journal":{"name":"Mediterranean Botany","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136308523","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}

{"title":"Evaluating canopy water content in grasslands by using in situ hyperespectral data","authors":"Ahmet Karakoç, Murat Karabulut","doi":"10.5209/mbot.81561","DOIUrl":"https://doi.org/10.5209/mbot.81561","url":null,"abstract":"The water content of vegetation is considered a key parameter for ecological analysis as well as for agricultural and forestry applications. Remote sensing methods offer significant advantages over traditional field methods for determining the water content of vegetation at the leaf, canopy, and landscape levels. In this study, the potential of hyperspectral vegetation indices in predicting canopy water content in grasslands was evaluated. For this purpose, data were collected from 3 several grasslands located at ~500 m, ~1200 m and ~1400 m altitudes. 71 samples were collected from each study area, and a total of 213 samples were analyzed. In this context, 59 ratio-based hyperspectral vegetation indices were tested. The relationship between canopy water content and hyperspectral vegetation indices was evaluated with linear, exponential, logarithmic and power regression models. The results showed that the NW-3 (920,970) index significantly represents the canopy water content variable. It was determined that the exponential regression model created with this index was able to explain the variations in canopy water content up to 85%. On the other hand, it has been detected that the high level of water content in the vegetation creates a significant saturation problem. Another finding of this study is that the predictive power reaches higher levels in low canopy water content characteristics. The results of this study show that in situ hyperspectral data has a very high potential in determining vegetation water content in grasslands.","PeriodicalId":54240,"journal":{"name":"Mediterranean Botany","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136308357","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}

{"title":"Bromus cincinnatus (Poaceae): perennial oat-grass or annual brome-grass?","authors":"Carlos Romero Zarco","doi":"10.5209/mbot.84748","DOIUrl":"https://doi.org/10.5209/mbot.84748","url":null,"abstract":"A former lectotype for Bromus cincinnatus Ten. (Poaceae) has been superseded, as it is in serious conflict with the protologue. Another element of the protologue has been designated as the effective lectotype. The new lectotype is identified as coespecific with Bromus intermedius Guss., a Mediterranean species of Bromus L. subg. Bromus. The new combination Helictochloa panormitana (Lojac.) Romero Zarco is proposed for the species originally described as Avena australis Parl., nom. illeg., which is currently known as Helictochloa cincinnata auct. The lectotypes of Avena panormitana Lojac., Avena opulenta Lojac., and Bromus intermedius Guss. are also designated.","PeriodicalId":54240,"journal":{"name":"Mediterranean Botany","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41422584","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}

{"title":"New insights about Quercus faginea (s.l) taxonomic status in northern Africa","authors":"Abdeldjalil Aissi","doi":"10.5209/mbot.82996","DOIUrl":"https://doi.org/10.5209/mbot.82996","url":null,"abstract":"The genus Quercus is known for its taxonomic complexity that is characterized by the abundant morphologicaldiversity and phenomena of hybridization and introgression found in a number of its species. The number of taxacontinues to change and evolve despite systematists’ attempts to clarify and simplify it. The Quercus faginea s.l. complexrepresents one of the most conclusive and complex examples found in the North-Western Mediterranean and North Africa.Nevertheless, the systematics of this complex have undergone a remarkable evolution from the first Lamarckian taxa Q.lusitanica and Q. faginea to the present day, especially in the Iberian Peninsula, Tunisia, and Algeria, by virtue of therecognized taxa. To compare Moroccan taxa with those found in other regions, as well as update the taxonomic status ofpopulations found in Morocco, data found in a corresponding bibliography was used for a critical and objective analysis.Although the taxonomic situation remains unresolved, the analysis found that there is a likely presence of the fagineavariety in Morocco, while also anticipating the confirmation of a new morphological analysis that accounts for the stablecriteria used for an infraspecific distinction. The rest of Morocco’s stands seem to be represented by Q. canariensis andQ. faginea subsp. broteroi. Considering the uncertain existence of maroccana, further study of its distinct morphologicaland biogeographical peculiarity is required.","PeriodicalId":54240,"journal":{"name":"Mediterranean Botany","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43750495","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}

{"title":"New data on freshwater lichens in Mediterranean streams","authors":"Gregorio Aragón, Marina Vicente, Gil Fernando Giménez, P. Hurtado","doi":"10.5209/mbot.84924","DOIUrl":"https://doi.org/10.5209/mbot.84924","url":null,"abstract":"New chorological data on freshwater lichens in central Spain are presented. We have identified twenty-one saxicolous species resistant to periodic immersion at five localities of Montes de Toledo. Eighteen species are reported for the first time in Castilla-La Mancha territory. Remarkable extensions in the distribution range are found for most lichen species highlighting the importance of intermittent streams for lichen diversity in the Mediterranean Region","PeriodicalId":54240,"journal":{"name":"Mediterranean Botany","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42930751","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}

{"title":"Identity of north African endemic bryophytes, 3, with special emphasis in Funaria altissima","authors":"Rosa María Ros Espín, J. Muñoz, O. Werner","doi":"10.5209/mbot.84615","DOIUrl":"https://doi.org/10.5209/mbot.84615","url":null,"abstract":"The types of five taxa described with material from northern Africa have been revised, yielding the following results: Barbula commutata var. erosa Corb. is synomyzed with Streblotrichum convolutum var. commutatum; Bryum trabutii Thér. with Ptychostomum rubens; Thamnium alopecurum var. decipiens Corb. with Scorpiurium circinatum; and Trichostomum mediterraneum var. algeriae Müll. Hal. ex Geh. with Hydrogonium bolleanum. Funaria altissima Dixon is recognized as a distinct species, for which we provide a full description, photographs, and a key to the more closely species. Lectotypes have been designated for all names except for F. altissima. The identity of two nomina nuda is also resolved: Funaria hygrometrica var. dentata Corb. ex Maire & Werner, corresponds to typical Funaria hygrometrica, and Zygodon dimorphus Thér. ex Jelenc is here identified as Grimmia torquata¸ an interesting addition to the bryophyte flora of Morocco and continental Africa. Ptychostomum rubens is reported for the first time from Algeria.","PeriodicalId":54240,"journal":{"name":"Mediterranean Botany","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49667256","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}