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Tao Z. Predicting the changes in suitable habitats for six common woody species in Central Asia. Int J Biometeorol 2023; 67:107-119. [PMID: 36269447 DOI: 10.1007/s00484-022-02389-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 10/05/2022] [Accepted: 10/12/2022] [Indexed: 06/16/2023]
Abstract
Climate change over the past decades has significantly altered global hydrothermal conditions and caused an evident shift in species distribution. Predicting species distribution patterns and identifying their influencing factors will be essential in developing coping strategies to prevent species extirpation and extinction. Yet, environmental factors affecting the distribution of woody species in Central Asia remain largely unknown. Here, I used the MaxEnt model to predict the current distributions and future distribution under three SSP-RCP scenarios of six common woody species in Central Asia. The results indicated a good performance of the MaxEnt model. Precipitation of driest month and annual mean temperature were the dominant factors affecting species distribution. For the species with wide ecological niches, i.e., Acer negundo and Rosa chinensis, the suitable areas showed an evident expansion trend under future scenarios. In addition, a trend toward higher elevation was found for the species that grew at high altitudes (1600-3200 m). However, the average elevation of suitable area for A. negundo and R. chinensis firstly increased but then decreased under future scenarios. Even though the areas with high species diversity increased from 0.59% under the current situation to 0.82% and 0.81% under ssp245 in 2021-2040 and 2041-2060, respectively, species diversity showed an apparent loss in parts of the northwest and southeast areas under ssp370 and ssp585. This study can guide susceptible habitat protections under climate change.
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Affiliation(s)
- Zexing Tao
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 100101, Beijing, China.
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Zouaoui S, Farman M, Semmar N. Review on Structural Trends and Chemotaxonomical Aspects of Pharmacologically Evaluated Flavonoids. Curr Top Med Chem 2021; 21:628-648. [PMID: 33441067 DOI: 10.2174/1568026621666210113165007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 12/18/2020] [Accepted: 12/24/2020] [Indexed: 11/22/2022]
Abstract
INTRODUCTION This work provides statistical analyses of bibliographic data on pharmacologically evaluated flavonoids from different plant families. By opposition to structural elucidations benefitting from full data aspects, pharmacological evaluations are concerned with partial investigations resulting in sparse information. METHODS The limited data availability was overcome by extensive consideration of several small sets of pharmacologically evaluated flavonoids in several plant taxa, alternatively to the traditional intensive analysis of big dataset of a given metabolic family in a given plant taxon. Statistical analyses were carried out using correspondence analysis, cluster analysis, box plots and fisher exact test to highlight structure-structure, structure-plant and structure-activity trends. RESULTS Different aglycone types showed opposite trends between hydroxylation (flavonols, anthocyanidins, flavanols), and methoxylation (isoflavones, isoflavanes, neoflavones). Moreover, different carbons showed differential substitution levels in different aglycones: C3 in flavonols, C6, C8 in flavones, flavonols, C2' in flavanones, C6' in isoflavanes. Plant families were well differentiated by different relative occurrences of aglycones: flavones in Lamiaceae, flavanones in Rutaceae, neoflavones in Rubiaceae, flavonols in Asteraceae, isoflavones in Fabaceae. Relatively more hydroxylated flavonoids occurred in Asteraceae, Lamiaceae and Fabaceae vs. more methoxylated ones in Rutaceae and Rubiaceae. Concerning structure-activity trends, flavanols and isoflavones were relatively more concerned with anti-diabetic and anti-inflammatory activities, respectively, vs. balanced distribution of flavones. Anti-inflammatory activity showed significant association with substitution position of same chemical groups (OH, OCH3), whereas anti-diabetic activity was revealed to be mainly influenced by the type of chemical groups (positive effect of OH and glycosyls). CONCLUSION These results call for regular updates and further investigations.
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Affiliation(s)
- Sana Zouaoui
- Bioinformatics, Biomathematics & Biostatistics Laboratory (BIMS), Pasteur Institute of Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Muhammad Farman
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Nabil Semmar
- Bioinformatics, Biomathematics & Biostatistics Laboratory (BIMS), Pasteur Institute of Tunis, University of Tunis El Manar, Tunis, Tunisia
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Wittich HC, Seeland M, Wäldchen J, Rzanny M, Mäder P. Recommending plant taxa for supporting on-site species identification. BMC Bioinformatics 2018; 19:190. [PMID: 29843588 PMCID: PMC5975699 DOI: 10.1186/s12859-018-2201-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 05/14/2018] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Predicting a list of plant taxa most likely to be observed at a given geographical location and time is useful for many scenarios in biodiversity informatics. Since efficient plant species identification is impeded mainly by the large number of possible candidate species, providing a shortlist of likely candidates can help significantly expedite the task. Whereas species distribution models heavily rely on geo-referenced occurrence data, such information still remains largely unused for plant taxa identification tools. RESULTS In this paper, we conduct a study on the feasibility of computing a ranked shortlist of plant taxa likely to be encountered by an observer in the field. We use the territory of Germany as case study with a total of 7.62M records of freely available plant presence-absence data and occurrence records for 2.7k plant taxa. We systematically study achievable recommendation quality based on two types of source data: binary presence-absence data and individual occurrence records. Furthermore, we study strategies for aggregating records into a taxa recommendation based on location and date of an observation. CONCLUSION We evaluate recommendations using 28k geo-referenced and taxa-labeled plant images hosted on the Flickr website as an independent test dataset. Relying on location information from presence-absence data alone results in an average recall of 82%. However, we find that occurrence records are complementary to presence-absence data and using both in combination yields considerably higher recall of 96% along with improved ranking metrics. Ultimately, by reducing the list of candidate taxa by an average of 62%, a spatio-temporal prior can substantially expedite the overall identification problem.
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Affiliation(s)
- Hans Christian Wittich
- Institute for Computer and Systems Engineering, Technische Universität Ilmenau, Helmholtzplatz 5, Ilmenau, 98693 Germany
| | - Marco Seeland
- Institute for Computer and Systems Engineering, Technische Universität Ilmenau, Helmholtzplatz 5, Ilmenau, 98693 Germany
| | - Jana Wäldchen
- Department Biogeochemical Integration, Max-Planck-Institute for Biogeochemistry, Hans-Knöll-Str. 10, Jena, 07745 Germany
| | - Michael Rzanny
- Department Biogeochemical Integration, Max-Planck-Institute for Biogeochemistry, Hans-Knöll-Str. 10, Jena, 07745 Germany
| | - Patrick Mäder
- Institute for Computer and Systems Engineering, Technische Universität Ilmenau, Helmholtzplatz 5, Ilmenau, 98693 Germany
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Medek DE, Beggs PJ, Erbas B, Jaggard AK, Campbell BC, Vicendese D, Johnston FH, Godwin I, Huete AR, Green BJ, Burton PK, Bowman DMJS, Newnham RM, Katelaris CH, Haberle SG, Newbigin E, Davies JM. Regional and seasonal variation in airborne grass pollen levels between cities of Australia and New Zealand. Aerobiologia (Bologna) 2016; 32:289-302. [PMID: 27069303 PMCID: PMC4826055 DOI: 10.1007/s10453-015-9399-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Although grass pollen is widely regarded as the major outdoor aeroallergen source in Australia and New Zealand (NZ), no assemblage of airborne pollen data for the region has been previously compiled. Grass pollen count data collected at 14 urban sites in Australia and NZ over periods ranging from 1 to 17 years were acquired, assembled and compared, revealing considerable spatiotemporal variability. Although direct comparison between these data is problematic due to methodological differences between monitoring sites, the following patterns are apparent. Grass pollen seasons tended to have more than one peak from tropics to latitudes of 37°S and single peaks at sites south of this latitude. A longer grass pollen season was therefore found at sites below 37°S, driven by later seasonal end dates for grass growth and flowering. Daily pollen counts increased with latitude; subtropical regions had seasons of both high intensity and long duration. At higher latitude sites, the single springtime grass pollen peak is potentially due to a cooler growing season and a predominance of pollen from C3 grasses. The multiple peaks at lower latitude sites may be due to a warmer season and the predominance of pollen from C4 grasses. Prevalence and duration of seasonal allergies may reflect the differing pollen seasons across Australia and NZ. It must be emphasized that these findings are tentative due to limitations in the available data, reinforcing the need to implement standardized pollen-monitoring methods across Australasia. Furthermore, spatiotemporal differences in grass pollen counts indicate that local, current, standardized pollen monitoring would assist with the management of pollen allergen exposure for patients at risk of allergic rhinitis and asthma.
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Affiliation(s)
| | - Paul J Beggs
- Department of Environmental Sciences, Faculty of Science and Engineering, Macquarie University, Sydney, Australia
| | - Bircan Erbas
- School of Psychology and Public Health, La Trobe University, Melbourne, Australia
| | - Alison K Jaggard
- Department of Environmental Sciences, Faculty of Science and Engineering, Macquarie University, Sydney, Australia
| | - Bradley C Campbell
- School of Agriculture and Food Science, The University of Queensland, Brisbane, Australia
| | - Don Vicendese
- School of Psychology and Public Health, La Trobe University, Melbourne, Australia
| | - Fay H Johnston
- Menzies Research Institute Tasmania, University of Tasmania, Hobart, Australia
| | - Ian Godwin
- School of Agriculture and Food Science, The University of Queensland, Brisbane, Australia
| | - Alfredo R Huete
- Plant Functional Biology and Climate Change, University of Technology, Sydney, Sydney, Australia
| | - Brett J Green
- National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Morgantown, WV, USA
| | - Pamela K Burton
- Campbelltown Hospital and the School of Medicine, University of Western Sydney, Macarthur, NSW, Australia
| | - David M J S Bowman
- School of Biological Sciences, University of Tasmania, Hobart, Australia
| | - Rewi M Newnham
- School of Geography, Environment and Earth Sciences, Victoria University of Wellington, Wellington, New Zealand
| | - Constance H Katelaris
- Campbelltown Hospital and the School of Medicine, University of Western Sydney, Macarthur, NSW, Australia
| | - Simon G Haberle
- Department of Archaeology and Natural History, College of Asia and the Pacific, The Australian National University, Canberra, Australia
| | - Ed Newbigin
- School of BioSciences, The University of Melbourne, Melbourne, Australia
| | - Janet M Davies
- School of Medicine, Translational Research Institute, The University of Queensland, Brisbane, Australia
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Abstract
To test whether the range of montane Compositae species may be restricted to higher sites because of greater herbivory levels in the lowlands, we transplanted six species, combining them in three species pairs each consisting of a rare montane and a widespread species. Individuals of all species were planted at four sites of different altitude ranging from the lowlands to the subalpine Mt. Brocken in the Harz mountains, Germany. Food choice experiments with three mollusc species indicated that the montane plant was more palatable in the species pair Senecio hercynicus/S. ovatus, but the widespread plant was more palatable in the species pair Petasites albus/Tussilago farfara. In the third pair (Cicerbita alpina/Mycelis muralis), neither species was preferred. In the field, species-specific herbivory levels differed in their amount, in their interaction with plant phenology and in their effect on mortality. They only partially reflected the laboratory food choice results. We found clear differences between the lowest and the highest site for all species, but a continuous decrease in herbivory with altitude was only detected in three of the six species.
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Affiliation(s)
- Ulrich Scheidel
- Department of Ecology and Ecosystem Research, Albrecht-von-Haller-Institute for Plant Sciences, Untere Karspüle 2, 37073, Göttingen, Germany
| | - Helge Bruelheide
- Department of Ecology and Ecosystem Research, Albrecht-von-Haller-Institute for Plant Sciences, Untere Karspüle 2, 37073, Göttingen, Germany
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Pyankov VI, Gunin PD, Tsoog S, Black CC. C 4 plants in the vegetation of Mongolia: their natural occurrence and geographical distribution in relation to climate. Oecologia 2000; 123:15-31. [PMID: 28308740 DOI: 10.1007/s004420050985] [Citation(s) in RCA: 151] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The natural geographical occurrence, carbon assimilation, and structural and biochemical diversity of species with C4 photosynthesis in the vegetation of Mongolia was studied. The Mongolian flora was screened for C4 plants by using 13C/12C isotope fractionation, determining the early products of 14CO2 fixation, microscopy of leaf mesophyll cell anatomy, and from reported literature data. Eighty C4 species were found among eight families: Amaranthaceae, Chenopodiaceae, Euphorbiaceae, Molluginaceae, Poaceae, Polygonaceae, Portulacaceae and Zygophyllaceae. Most of the C4 species were in three families: Chenopodiceae (41 species), Poaceae (25 species) and Polygonaceae, genus Calligonum (6 species). Some new C4 species in Chenopodiaceae, Poaceae and Polygonaceae were detected. C4 Chenopodiaceae species make up 45% of the total chenopods and are very important ecologically in saline areas and in cold arid deserts. C4 grasses make up about 10% of the total Poaceae species and these species naturally concentrate in steppe zones. Naturalized grasses with Kranz anatomy,of genera such as Setaria, Echinochloa, Eragrostis, Panicum and Chloris, were found in almost all the botanical-geographical regions of Mongolia, where they commonly occur in annually disturbed areas and desert oases. We analyzed the relationships between the occurrence of C4 plants in 16 natural botanical-geographical regions of Mongolia and their major climatic influences. The proportion of C4 species increases with decreasing geographical latitude and along the north-to-south temperature gradient; however grasses and chenopods differ in their responses to climate. The abundance of Chenopodiaceae species was closely correlated with aridity, but the distribution of the C4 grasses was more dependent on temperature. Also, we found a unique distribution of different C4 Chenopodiaceae structural and biochemical subtypes along the aridity gradient. NADP-malic enzyme (NADP-ME) tree-like species with a salsoloid type of Kranz anatomy, such as Haloxylon ammodendron and Iljinia regelii, plus shrubby Salsola and Anabasis species, were the plants most resistant to ecological stress and conditions in highly arid Gobian deserts with less than 100 mm of annual precipitation. Most of the annual C4 chenopod species were halophytes, succulent, and occurred in saline and arid environments in steppe and desert regions. The relative abundance of C3 succulent chenopod species also increased along the aridity gradient. Native C4 grasses were mainly annual and perennial species from the Cynodonteae tribe with NAD-ME and PEP-carboxykinase (PEP-CK) photosynthetic types. They occurred across much of Mongolia, but were most common in steppe zones where they are often dominant in grazing ecosystems.
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Affiliation(s)
- V I Pyankov
- Department of Plant Physiology, Urals State University, Lenin Prospect 51, 620083, Ekaterinburg, Russia e-mail: Tel.: +7-3432-616685, Fax: +7-3432-557401, , , , , , RU
| | - P D Gunin
- Institute of Ecological Problems of Academy of Sciences of Russia, Leninsky Prospect 33, Moscow 117334, Russia, , , , , , RU
| | - S Tsoog
- Institute of Botany Sciences of the Academy of Sciences of Mongolia, Ulaanbaatar, Mongolia, , , , , , MN
| | - C C Black
- University of Georgia, Biochemistry and Molecular Biology Department, Athens, GA 30602-7229, USA, , , , , , US
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