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Collado GA, Salvador RB, Vidal M, Parra Aravena F, Delgado V, Torres-Díaz C. Distribution, conservation status and proposed measures for preservation of Radiodiscus microgastropods in Chile. PeerJ 2023; 11:e14027. [PMID: 36643651 PMCID: PMC9838206 DOI: 10.7717/peerj.14027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 08/16/2022] [Indexed: 01/11/2023] Open
Abstract
The genus Radiodiscus includes minute terrestrial snails occurring throughout the American continent. We assessed the conservation status of eight poorly known Chilean Radiodiscus species using the International Union for Conservation of Nature (IUCN) and NatureServe categories and criteria. Under the IUCN guidelines the species were assessed using the Criterion B of geographic range, which considers the extent of occurrence (EOO) and area of occupancy (AOO) as subcriteria. For NatureServe we used these two parameters plus the number of occurrences, ecological viability, and threats. Considering species rarity and possible sampling bias, we also used ecological niche modeling to determine climate and environmental tolerances and predict potential species distributions analyzing bioclimatic and geographical layers. Radiodiscus australis, R. coarctatus and R. quillajicola were listed as Critically Endangered by IUCN and NatureServe standards; R. coppingeri, R. flammulatus, R. magellanicus and R. villarricensis as Endangered by both methods; while R. riochicoensis as Endangered by IUCN standards and Vulnerable by NatureServe standards. Niche modeling results indicated that Radiodiscus species respond to different environmental conditions and that the predicted distribution areas contain suitable habitats beyond the current ranges, which may be helpful for future management plans. Nature-based sport tourism, forestry activities, urbanization, roads, pollution, mining, forest fires, livestock, volcanism, tsunamis, soil erosion and introduced species are among the major threats affecting these snails. Based on the low number of occurrences and the threats identified, the most at-risk species are R. coarctatus and R. quillajicola (one record), R. australis (two records) and R. villarricensis (three records); the latter two lacking occurrences within protected areas. Compiling our findings, we propose a list of actions to preserve Chilean Radiodiscus species.
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Affiliation(s)
- Gonzalo A. Collado
- Departamento de Ciencias Básicas, Universidad del Bío-Bío, Chillán, Ñuble, Chile,Grupo de Investigación en Biodiversidad and Cambio Global, Universidad del Bío-Bío, Chillán, Chile
| | - Rodrigo B. Salvador
- Museum of New Zealand Te Papa Tongarewa, Wellington, New Zealand,Department of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, UiT—The Arctic University of Norway, Tromsø, Norway,The Arctic University Museum of Norway, UiT—The Arctic University of Norway, Tromsø, Norway
| | - Marcela Vidal
- Departamento de Ciencias Básicas, Universidad del Bío-Bío, Chillán, Ñuble, Chile,Grupo de Investigación en Biodiversidad and Cambio Global, Universidad del Bío-Bío, Chillán, Chile
| | | | - Vannia Delgado
- Departamento de Ciencias Básicas, Universidad del Bío-Bío, Chillán, Ñuble, Chile
| | - Cristian Torres-Díaz
- Departamento de Ciencias Básicas, Universidad del Bío-Bío, Chillán, Ñuble, Chile,Grupo de Investigación en Biodiversidad and Cambio Global, Universidad del Bío-Bío, Chillán, Chile
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Busby WH, Barve N, Cobos M, Peterson AT. EFFECTS OF LANDSCAPE HISTORY ON CURRENT GEOGRAPHIC DISTRIBUTIONS OF FOUR SPECIES OF REPTILES AND AMPHIBIANS IN KANSAS. SOUTHWEST NAT 2022. [DOI: 10.1894/0038-4909-66.2.157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- William H. Busby
- Kansas Biological Survey, University of Kansas, Lawrence, KS 66047 (WHB)
| | - Narayani Barve
- Florida Museum of Natural History, University of Florida, Gainesville, FL 32611 (NB)
| | - Marlon Cobos
- Biodiversity Institute, University of Kansas, Lawrence, KS 66045 (NB, MC, ATP)
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Thurtell L, Rajaratnam R, Thomas P, Ballard G, Bayne P, Vernes K. Predictively modelling the distribution of the threatened brush-tailed rock-wallaby (. WILDLIFE RESEARCH 2021. [DOI: 10.1071/wr20141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Abstract Context Species Distribution Models (SDM) can be used to investigate and understand relationships between species occurrence and environmental variables, so as to predict potential distribution. These predictions can facilitate conservation actions and management decisions. Oxley Wild Rivers National Park (OWRNP) is regarded as an important stronghold for the threatened brush-tailed rock-wallaby (Petrogale penicillata), on the basis of the presence of the largest known metapopulation of the species. Adequate knowledge of the species’ ecology and distribution in OWRNP is a key objective in the national recovery plan for the species occurring in the Park. Aims To model distribution using key GIS-derived environmental factors for the brush-tailed rock-wallaby in OWRNP and to ground-truth its presence through field surveys in areas of high habitat suitability. Methods We used Maxent to model the distribution of the brush-tailed rock-wallaby within OWRNP on the basis of 282 occurrence records collected from an online database, elicitation of informal records from experts, helicopter surveys and historic records. Environmental variables used in the analysis were aspect, distance to water, elevation, geology type, slope and vegetation type. Key results Vegetation type (37.9%) was the highest contributing predictor of suitable habitat, whereas aspect (4.8%) contributed the least. The model produced an area under the curve (AUC) of the receiver operating characteristic (ROC) of 0.780. The model was able to discriminate between suitable and non-suitable habitat for brush-tailed rock-wallabies. Areas identified in our model as being highly suitable yielded eight new occurrence records during subsequent ground-truthing field surveys. Conclusions Brush-tailed rock-wallaby distribution in OWRNP is primarily associated with vegetation type, followed by distance to water, elevation, geology, slope and aspect. Field surveys indicated that the model was able to identify areas of high habitat suitability. Implications This model represents the first predicted distribution of brush-tailed rock-wallaby in OWRNP. By identifying areas of high habitat suitability, it can be used to survey and monitor the species in OWRNP, and, thus, contribute to its management and conservation within the Park.
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Bedwell ME, Hopkins KVS, Dillingham C, Goldberg CS. Evaluating Sierra Nevada Yellow‐Legged Frog Distribution Using Environmental DNA. J Wildl Manage 2021. [DOI: 10.1002/jwmg.22053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
| | | | - Colin Dillingham
- U.S. Forest Service R5, 39696 State Highway 70 Quincy CA 95971 USA
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Cerrejón C, Valeria O, Marchand P, Caners RT, Fenton NJ. No place to hide: Rare plant detection through remote sensing. DIVERS DISTRIB 2021. [DOI: 10.1111/ddi.13244] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Affiliation(s)
- Carlos Cerrejón
- Institut de recherche sur les forêts Université du Québec en Abitibi‐Témiscamingue Rouyn‐Noranda QC Canada
| | - Osvaldo Valeria
- Institut de recherche sur les forêts Université du Québec en Abitibi‐Témiscamingue Rouyn‐Noranda QC Canada
| | - Philippe Marchand
- Institut de recherche sur les forêts Université du Québec en Abitibi‐Témiscamingue Rouyn‐Noranda QC Canada
| | | | - Nicole J. Fenton
- Institut de recherche sur les forêts Université du Québec en Abitibi‐Témiscamingue Rouyn‐Noranda QC Canada
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Kumar A, Kumar A, Adhikari D, Gudasalamani R, Saikia P, Khan ML. Ecological niche modeling for assessing potential distribution of
Pterocarpus marsupium
Roxb. In Ranchi, eastern India. Ecol Res 2020. [DOI: 10.1111/1440-1703.12176] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Amit Kumar
- Department of Geoinformatics Central University of Jharkhand Ranchi India
| | - Anish Kumar
- Department of Geoinformatics Central University of Jharkhand Ranchi India
| | | | - Ravikanth Gudasalamani
- Conservation Genetics Lab Ashoka Trust for Research in Ecology and the Environment, Jakkur Bengaluru India
| | - Purabi Saikia
- Department of Environmental Sciences Central University of Jharkhand Ranchi India
| | - Mohammed Latif Khan
- Department of Botany Dr Harisingh Gour Vishwavidyalaya (A Central University) Sagar India
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de Sousa VA, Reeves PA, Reilley A, de Aguiar AV, Stefenon VM, Richards CM. Genetic diversity and biogeographic determinants of population structure in Araucaria angustifolia (Bert.) O. Ktze. CONSERV GENET 2020. [DOI: 10.1007/s10592-019-01242-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
AbstractAraucaria (Araucaria angustifolia (Bert.) O. Ktze) is a primarily dioecious species threatened with extinction that plays an important social and economic role especially in the southern region of Brazil. The aim of this work is to investigate the diversity and likely determinants of genetic lineages in this species for conservation management. For this, a collection of 30-year-old Araucaria was used. Accessions collected from 12 sites across the species range were analyzed, with ten individuals per site. The SSR genotyping was conducted with 15 loci and the data were analyzed using several complementary approaches. Descriptive statistics among sampling sites were used and diversity was partitioned non-hierarchically to estimate the size and composition of genetic clusters using a Bayesian assignment method. To explore possible biological implications of differences between Niche Models and habitat suitability, a series of statistical procedures were used, and tests were carried out using the software ENM Tools and Maxent. Populations from the southernmost zone showed higher genetic variation and a lower inbreeding coefficient compared to the northernmost zone, which may correlate with their isolation. A positive relation between genetic differentiation and geographic distance was observed. Two genetic groups (southernmost and northernmost zones) were evident. The Niche modelling showed separate ranges for each genetic lineage suggesting that differences in selection pressure may be playing a role in the apparent differentiation and may be adaptive. Finally, an evident correlation was observed between genetic data and habitat suitability. The two distinct groups observed must be considered as independent units for conservation and hybridization in breeding programs.
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Feng X, Park DS, Liang Y, Pandey R, Papeş M. Collinearity in ecological niche modeling: Confusions and challenges. Ecol Evol 2019; 9:10365-10376. [PMID: 31624555 PMCID: PMC6787792 DOI: 10.1002/ece3.5555] [Citation(s) in RCA: 91] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 06/24/2019] [Accepted: 07/25/2019] [Indexed: 01/11/2023] Open
Abstract
Ecological niche models are widely used in ecology and biogeography. Maxent is one of the most frequently used niche modeling tools, and many studies have aimed to optimize its performance. However, scholars have conflicting views on the treatment of predictor collinearity in Maxent modeling. Despite this lack of consensus, quantitative examinations of the effects of collinearity on Maxent modeling, especially in model transfer scenarios, are lacking. To address this knowledge gap, here we quantify the effects of collinearity under different scenarios of Maxent model training and projection. We separately examine the effects of predictor collinearity, collinearity shifts between training and testing data, and environmental novelty on model performance. We demonstrate that excluding highly correlated predictor variables does not significantly influence model performance. However, we find that collinearity shift and environmental novelty have significant negative effects on the performance of model transfer. We thus conclude that (a) Maxent is robust to predictor collinearity in model training; (b) the strategy of excluding highly correlated variables has little impact because Maxent accounts for redundant variables; and (c) collinearity shift and environmental novelty can negatively affect Maxent model transferability. We therefore recommend to quantify and report collinearity shift and environmental novelty to better infer model accuracy when models are spatially and/or temporally transferred.
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Affiliation(s)
- Xiao Feng
- Institute of the EnvironmentUniversity of ArizonaTucsonAZUSA
- School of Natural Resources and the EnvironmentUniversity of ArizonaTucsonAZUSA
| | - Daniel S. Park
- Department of Organismic and Evolutionary BiologyHarvard UniversityCambridgeMAUSA
| | - Ye Liang
- Department of StatisticsOklahoma State UniversityStillwaterOKUSA
| | - Ranjit Pandey
- Department of Integrative BiologyOklahoma State UniversityStillwaterOKUSA
| | - Monica Papeş
- Department of Ecology and Evolutionary BiologyUniversity of TennesseeKnoxvilleTNUSA
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Gupta S, Mao AA, Sarma S. Effects of Thidiazuron (TDZ) on Direct Shoot Organogenesis of Gymnocladus assamicus: A Threatened and Critically Endangered Species from Northeast India. NATIONAL ACADEMY SCIENCE LETTERS 2019. [DOI: 10.1007/s40009-019-00801-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Identifying corridors for landscape connectivity using species distribution modeling of Hydnocarpus kurzii (King) Warb., a threatened species of the Indo-Burma Biodiversity Hotspot. LANDSCAPE AND ECOLOGICAL ENGINEERING 2018. [DOI: 10.1007/s11355-018-0353-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Peterson AT, Navarro-Sigüenza AG, Gordillo A. Assumption-versus data-based approaches to summarizing species' ranges. CONSERVATION BIOLOGY : THE JOURNAL OF THE SOCIETY FOR CONSERVATION BIOLOGY 2018; 32:568-575. [PMID: 27488935 DOI: 10.1111/cobi.12801] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2015] [Revised: 06/14/2016] [Accepted: 06/24/2016] [Indexed: 06/06/2023]
Abstract
For conservation decision making, species' geographic distributions are mapped using various approaches. Some such efforts have downscaled versions of coarse-resolution extent-of-occurrence maps to fine resolutions for conservation planning. We examined the quality of the extent-of-occurrence maps as range summaries and the utility of refining those maps into fine-resolution distributional hypotheses. Extent-of-occurrence maps tend to be overly simple, omit many known and well-documented populations, and likely frequently include many areas not holding populations. Refinement steps involve typological assumptions about habitat preferences and elevational ranges of species, which can introduce substantial error in estimates of species' true areas of distribution. However, no model-evaluation steps are taken to assess the predictive ability of these models, so model inaccuracies are not noticed. Whereas range summaries derived by these methods may be useful in coarse-grained, global-extent studies, their continued use in on-the-ground conservation applications at fine spatial resolutions is not advisable in light of reliance on assumptions, lack of real spatial resolution, and lack of testing. In contrast, data-driven techniques that integrate primary data on biodiversity occurrence with remotely sensed data that summarize environmental dimensions (i.e., ecological niche modeling or species distribution modeling) offer data-driven solutions based on a minimum of assumptions that can be evaluated and validated quantitatively to offer a well-founded, widely accepted method for summarizing species' distributional patterns for conservation applications.
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Affiliation(s)
| | | | - Alejandro Gordillo
- Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico, D.F, 04510, Mexico
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Application of Thermal and Phenological Land Surface Parameters for Improving Ecological Niche Models of Betula utilis in the Himalayan Region. REMOTE SENSING 2018. [DOI: 10.3390/rs10060814] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Chen S, Cunningham AA, Wei G, Yang J, Liang Z, Wang J, Wu M, Yan F, Xiao H, Harrison XA, Pettorelli N, Turvey ST. Determining threatened species distributions in the face of limited data: Spatial conservation prioritization for the Chinese giant salamander ( Andrias davidianus). Ecol Evol 2018; 8:3098-3108. [PMID: 29607009 PMCID: PMC5869214 DOI: 10.1002/ece3.3862] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 12/18/2017] [Accepted: 01/02/2018] [Indexed: 11/07/2022] Open
Abstract
The purpose of this study was to determine whether limited occurrence data for highly threatened species can provide useful spatial information to inform conservation. The study was conducted across central and southern China. We developed a habitat suitability model for the Critically Endangered Chinese giant salamander (Andrias davidianus) based on one biotic and three abiotic parameters from single‐site locality records, which represent the only relevant environmental data available for this species. We then validated model quality by testing whether increased percentage of predicted suitable habitat at the county level correlated with independent data on giant salamander presence. We randomly selected 48 counties containing historical records which were distinct from, and independent of, the single‐site records used to develop the model, and 47 additional counties containing >50% predicted suitable habitat. We interviewed 2,812 respondents near potential giant salamander habitat across these counties and tested for differences in respondent giant salamander reports between counties selected using each method. Our model predicts that suitable giant salamander habitat is found widely across central and southern China, with counties containing ≥50% predicted suitable habitat distributed in 13 provinces. Counties with historical records contain significantly more predicted suitable habitat than counties without historical records. There are no statistical differences in any patterns of respondent giant salamander reports in surveyed counties selected from our model compared with the areas of known historical giant salamander distribution. A Chinese giant salamander habitat suitability model with strong predictive power can be derived from the restricted range of environmental variables associated with limited available presence‐only occurrence records, constituting a cost‐effective strategy to guide spatial allocation of conservation planning. Few reported sightings were recent, however, with most being over 20 years old, so that identification of areas of suitable habitat does not necessarily indicate continued survival of the species at these locations.
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Affiliation(s)
- Shu Chen
- Institute of Zoology Zoological Society of London London UK
| | | | - Gang Wei
- Guiyang University Guiyang Guizhou China
| | - Jian Yang
- Guangxi Teachers Education University Nanning Guangxi China
| | - Zhiqiang Liang
- Fisheries Research Institute of Hunan Province Changsha Hunan China
| | - Jie Wang
- Chengdu Institute of Biology Chinese Academy of Sciences Chengdu Sichuan China
| | - Minyao Wu
- Shaanxi Normal University Xi'an Shaanxi China
| | - Fang Yan
- Kunming Institute of Zoology Chinese Academy of Sciences Kunming Yunnan China
| | - Hanbin Xiao
- Yangtze River Fisheries Research Institute Chinese Academy of Fisheries Science Wuhan Hubei China
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Effects of Environmental Changes on the Occurrence of Oreomunnea mexicana (Juglandaceae) in a Biodiversity Hotspot Cloud Forest. FORESTS 2017. [DOI: 10.3390/f8080261] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Wang B, Xu Y, Ran J. Predicting suitable habitat of the Chinese monal ( Lophophorus lhuysii) using ecological niche modeling in the Qionglai Mountains, China. PeerJ 2017; 5:e3477. [PMID: 28695066 PMCID: PMC5501155 DOI: 10.7717/peerj.3477] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Accepted: 05/30/2017] [Indexed: 11/20/2022] Open
Abstract
Understanding the distribution and the extent of suitable habitats is crucial for wildlife conservation and management. Knowledge is limited regarding the natural habitats of the Chinese monal (Lophophorus lhuysii), which is a vulnerable Galliform species endemic to the high-montane areas of southwest China and a good candidate for being an umbrella species in the Qionglai Mountains. Using ecological niche modeling, we predicted current potential suitable habitats for the Chinese monal in the Qionglai Mountains with 64 presence points collected between 2005 and 2015. Suitable habitats of the Chinese monal were associated with about 31 mm precipitation of the driest quarter, about 15 °C of maximum temperature of the warmest month, and far from the nearest human residential locations (>5,000 m). The predicted suitable habitats of the Chinese monal covered an area of 2,490 km2, approximately 9.48% of the Qionglai Mountains, and was highly fragmented. 54.78% of the suitable habitats were under the protection of existing nature reserves and two conservation gaps were found. Based on these results, we provide four suggestions for the conservation management of the Chinese monal: (1) ad hoc surveys targeting potential suitable habitats to determine species occurrence, (2) more ecological studies regarding its dispersal capacity, (3) establishment of more corridors and green bridges across roads for facilitating species movement or dispersal, and (4) minimization of local disturbances.
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Affiliation(s)
- Bin Wang
- Sichuan University, Key Laboratory of Bio-Resources and Eco-Environment of Ministry Education, College of Life Sciences, Chengdu, China
| | - Yu Xu
- Guizhou Normal University, College of Life Sciences, Guiyang, China
- Pingdingshan University, School of Resources and Environmental Sciences, Pingdingshan, China
| | - Jianghong Ran
- Sichuan University, Key Laboratory of Bio-Resources and Eco-Environment of Ministry Education, College of Life Sciences, Chengdu, China
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Buira A. Aplicación de modelos de nicho ecológico para la localización de seis plantas amenazadas en el Parque Natural de Els Ports (noreste de la Península Ibérica). PIRINEOS 2016. [DOI: 10.3989/pirineos.2016.171001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Choudhury BI, Khan ML, Dayanandan S. Functional androdioecy in critically endangered Gymnocladus assamicus (Leguminosae) in the Eastern Himalayan Region of Northeast India. PLoS One 2014; 9:e87287. [PMID: 24586267 PMCID: PMC3938411 DOI: 10.1371/journal.pone.0087287] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Accepted: 12/20/2013] [Indexed: 11/18/2022] Open
Abstract
Gymnocladus assamicus is a critically endangered tree species endemic to Northeast India, and shows sexual dimorphism with male and hermaphrodite flowers on separate trees. We studied phenology, reproductive biology and mating system of the species. The flowers are small, tubular, odorless and last for about 96 hours. Pollen grains in both morphs were viable and capable of fertilization leading to fruit and seed set. Scanning electron micrographs revealed morphologically similar pollen in both male and hermaphrodite flowers. The fruit set in open pollinated flowers was 43.61 percent, while controlled autogamous and geitonogamous pollinations yielded 76.81 and 65.58 percent fruit set respectively. Xenogamous pollinations between male and hermaphrodite flowers resulted in 56.85 percent fruit set and pollinations between hermaphrodite flowers yielded 67.90 percent fruit set. This indicates a functionally androdioecious mating system and pollination limited fruit set in G. assamicus. Phylogenetic analyses of Gymnocladus and the sister genus Gleditsia are needed to assess if the androdioecious mating system in G. assamicus evolved from dioecy as a result of selection for hermaphrodites for reproductive assurance during colonization of pollination limited high altitude ecosystems.
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Affiliation(s)
- Baharul Islam Choudhury
- Forest and Evolutionary Genomics Laboratory, and Centre for Structural and Functional Genomics, Biology Department, Concordia University, Quebec, Canada
- Québec Centre for Biodiversity Sciences, Montréal, Quebec, Canada
- Department of Forestry, North Eastern Regional Institute of Science & Technology, Nirjuli, Arunachal Pradesh, India
| | - Mohammed Latif Khan
- Department of Forestry, North Eastern Regional Institute of Science & Technology, Nirjuli, Arunachal Pradesh, India
| | - Selvadurai Dayanandan
- Forest and Evolutionary Genomics Laboratory, and Centre for Structural and Functional Genomics, Biology Department, Concordia University, Quebec, Canada
- Québec Centre for Biodiversity Sciences, Montréal, Quebec, Canada
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Sánchez-Cordero V, Botello F, Flores-Martínez JJ, Gómez-Rodríguez RA, Guevara L, Gutiérrez-Granados G, Rodríguez-Moreno Á. Biodiversidad de Chordata (Mammalia) en México. REV MEX BIODIVERS 2014. [DOI: 10.7550/rmb.31688] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Variation in niche and distribution model performance: The need for a priori assessment of key causal factors. Ecol Modell 2012. [DOI: 10.1016/j.ecolmodel.2012.04.001] [Citation(s) in RCA: 133] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Namsa ND, Mandal M, Tangjang S, Mandal SC. Ethnobotany of the Monpa ethnic group at Arunachal Pradesh, India. JOURNAL OF ETHNOBIOLOGY AND ETHNOMEDICINE 2011; 7:31. [PMID: 21995750 PMCID: PMC3206407 DOI: 10.1186/1746-4269-7-31] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2010] [Accepted: 10/14/2011] [Indexed: 05/03/2023]
Abstract
BACKGROUND The present paper documents the uses of plants in traditional herbal medicine for human and veterinary ailments, and those used for dietary supplements, religious purpose, local beverage, and plants used to poison fish and wild animals. Traditional botanical medicine is the primary mode of healthcare for most of the rural population in Arunachal Pradesh. MATERIALS AND METHODS Field research was conducted between April 2006 and March 2009 with randomly selected 124 key informants using semi-structured questionnaire. The data obtained was analyzed through informant consensus factor (FIC) to determine the homogeneity of informant's knowledge on medicinal plants. RESULTS We documented 50 plants species belonging to 29 families used for treating 22 human and 4 veterinary ailments. Of the medicinal plants reported, the most common growth form was herbs (40%) followed by shrubs, trees, and climbers. Leaves were most frequently used plant parts. The consensus analysis revealed that the dermatological ailments have the highest FIC (0.56) and the gastro-intestinal diseases have FIC (0.43). FIC values indicated that there was high agreement in the use of plants in dermatological and gastro-intestinal ailments category among the users. Gymnocladus assamicus is a critically rare and endangered species used as disinfectant for cleaning wounds and parasites like leeches and lice on livestocks. Two plant species (Illicium griffithii and Rubia cordifolia) are commonly used for traditional dyeing of clothes and food items. Some of the edible plants recorded in this study were known for their treatment against high blood pressure (Clerodendron colebrookianum), diabetes mellitus (Momordica charantia), and intestinal parasitic worms like round and tape worms (Lindera neesiana, Solanum etiopicum, and Solanum indicum). The Monpas of Arunachal Pradesh have traditionally been using Daphne papyracea for preparing hand-made paper for painting and writing religious scripts in Buddhist monasteries. Three plant species (Derris scandens, Aesculus assamica, and Polygonum hydropiper) were frequently used to poison fish during the month of June-July every year and the underground tuber of Aconitum ferrox is widely used in arrow poisoning to kill ferocious animals like bear, wild pigs, gaur and deer. The most frequently cited plant species; Buddleja asiatica and Hedyotis scandens were used as common growth supplements during the preparation of fermentation starter cultures. CONCLUSION The traditional pharmacopoeia of the Monpa ethnic group incorporates a myriad of diverse botanical flora. Traditional knowledge of the remedies is passed down through oral traditions without any written document. This traditional knowledge is however, currently threatened mainly due to acculturation and deforestation due to continuing traditional shifting cultivation. This study reveals that the rural populations in Arunachal Pradesh have a rich knowledge of forest-based natural resources and consumption of wild edible plants is still an integral part of their socio-cultural life. Findings of this documentation study can be used as an ethnopharmacological basis for selecting plants for future phytochemical and pharmaceutical studies.
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Affiliation(s)
- Nima D Namsa
- Department of Molecular Biology and Biotechnology, Tezpur University, Assam 784 028, India
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore 560 012, India
| | - Manabendra Mandal
- Department of Molecular Biology and Biotechnology, Tezpur University, Assam 784 028, India
| | - Sumpam Tangjang
- Department of Botany, Rajiv Gandhi University, Rono Hills, Doimukh, Arunachal Pradesh 791112, India
| | - Subhash C Mandal
- Division of Pharmacognosy, Department of Pharmaceutical Technology, Jadavpur University Kolkata 700 032, India
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