Climate change shifts population structure and demographics of an alpine herb, Anemone narcissiflora ssp. sachalinensis (Ranunculaceae), along a snowmelt gradient

2021 ◽  
Author(s):  
Yuka Kawai ◽  
Gaku Kudo
Keyword(s):  
Climate Change ◽  
Population Structure

scholarly journals Geographic distribution and conservation status of Eulychnia ritteri Cullmann (Cactaceae), an endemic cactus from southern Peru

2021 ◽  
Vol 28 (4) ◽  
pp. e19290
Author(s):  
Gregory Anthony Pauca-Tanco ◽  
Margarita Balvin ◽  
Paul Hoxey ◽  
Víctor Quipuscoa ◽  
Johana del Pilar Quispe-Turpo
Keyword(s):  
Climate Change ◽  
Population Structure ◽  
Population Density ◽  
Geographical Distribution ◽  
Coastal Area ◽  
Conservation Status ◽  
Northern Coast ◽  
Flower Buds ◽  
Local Fauna ◽  
Populations At Risk

Eulychnia ritteri is endemic to Peru, restricted to the northern coast of the department of Arequipa. The lack of knowledge of this species, and threats such as human activities and climate change, put the populations at risk. In this research, we examined the geographical distribution and conservation status of E. ritteri in the coastal area of the Caravelí province. In addition, the population structure and phenology in the Quebrada Vizcachani population were evaluated using plots of 10x100 m. Data on the accompanying flora and local fauna were also obtained. Eulychnia ritteri showed five populations distributed from 15°43’ to 15°47’S, with a total area of 63.62 ha (0.63 km2). The Quebrada Vizcachani population is the largest (24.5 ha) and the Cementerio population the smallest (0.018 ha). The population density evaluated is 0.06 ind/m2, where seedlings, juveniles, adults, and dead plants were 3.61, 24.09, 56.63 and 15.67% respectively. The phenology was asynchronous, the flower buds, flowers and fruits appear in the same period. The flowers and fruits were food for insects and rodents respectively, and 18 accompanying species have been recorded. Finally, E. ritteri is categorised as endangered (EN), given its geographical distribution and identified threats.

scholarly journals Genetic diversity may help evolutionary rescue in a clonal endemic plant species of Western Himalaya

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Irshad Ahmad Sofi ◽  
Irfan Rashid ◽  
Javaid Yousuf Lone ◽  
Sandhya Tyagi ◽  
Zafar A. Reshi ◽  
...  
Keyword(s):  
Climate Change ◽  
Genetic Diversity ◽  
Population Structure ◽  
Plant Species ◽  
Ssr Markers ◽  
Sequence Data ◽  
Endemic Plant ◽  
Single Marker Analysis ◽  
Endemic Plant Species ◽  
Trait Associations

AbstractHabitat loss due to climate change may cause the extinction of the clonal species with a limited distribution range. Thus, determining the genetic diversity required for adaptability by these species in sensitive ecosystems can help infer the chances of their survival and spread in changing climate. We studied the genetic diversity and population structure of Sambucus wightiana—a clonal endemic plant species of the Himalayan region for understanding its possible survival chances in anticipated climate change. Eight polymorphic microsatellite markers were used to study the allelic/genetic diversity and population structure. In addition, ITS1–ITS4 Sanger sequencing was used for phylogeny and SNP detection. A total number of 73 alleles were scored for 37 genotypes at 17 loci for 8 SSRs markers. The population structural analysis using the SSR marker data led to identifying two sub-populations in our collection of 37 S. wightiana genotypes, with 11 genotypes having mixed ancestry. The ITS sequence data show a specific allele in higher frequency in a particular sub-population, indicating variation in different S. wightiana accessions at the sequence level. The genotypic data of SSR markers and trait data of 11 traits of S. wightiana, when analyzed together, revealed five significant Marker-Trait Associations (MTAs) through Single Marker Analysis (SMA) or regression analysis. Most of the SSR markers were found to be associated with more than one trait, indicating the usefulness of these markers for working out marker-trait associations. Moderate to high genetic diversity observed in the present study may provide insurance against climate change to S. wightiana and help its further spread.

scholarly journals Population Structure of Rhododendron Campanulatum D. Don and Associated Tree Species along the Elevational Gradient of Manaslu Conservation Area, Nepal

2016 ◽  
Vol 21 (1) ◽  
pp. 95-102
Author(s):  
Prabina Rana ◽  
Madan Koirala ◽  
Dinesh Raj Bhuju ◽  
Chuenchit Boonchird
Keyword(s):  
Climate Change ◽  
Population Structure ◽  
Altitudinal Gradient ◽  
Elevational Gradient ◽  
Climatic Conditions ◽  
Importance Value Index ◽  
Importance Value ◽  
Conservation Area ◽  
The Impact ◽  
Rhododendron Campanulatum

Climate change is affecting the forest ecosystems worldwide. Impacts of climate change are more perceptible at higher altitudes and can be easily detected along the elevational gradient. The main aim is to study the impact of elevation on the population structure of Rhododendron campanulatum D. Don and associated trees species at Manaslu Conservation Area, central Nepal. A total of 30 quadrats were sampled from 3600-4100 meter above sea level (m asl.) at altitudinal difference of 100 m with 5 quadrates in each altitude. The present study showed that R. campanulatum, Betula utilis, Abies spectabilis and Sorbus microphylla are the treeline species. R. campanulatum was the most dominant species with highest importance value index (IVI) along the altitudinal gradient. At 4000 m asl. S. microphylla was the codominant species. B. utilis was the codominant species at 3600 -3900 m asl followed by S. microphylla and A. spectabilis. R. campanulatum and A. spectabilis showed a sustainable regeneration. No seedling of B. utilis was found along the altitudinal gradient indicating that the regeneration of this species might be affected by unfavourable micohabitat (eg. deep shade). R. campanulatum and S. microphylla were found above the treeline indicating that the climatic conditions were favourable for their growth. The height, diameter and density of the species differed along the elevational gradient and showed a species specific trend. Journal of Institute of Science and TechnologyVol. 21, No. 1, 2016, page: 

scholarly journals A footprint of past climate change on the diversity and population structure of Miscanthus sinensis

2014 ◽  
Vol 114 (1) ◽  
pp. 97-107 ◽  
Author(s):  
Lindsay V. Clark ◽  
Joe E. Brummer ◽  
Katarzyna Głowacka ◽  
Megan C. Hall ◽  
Kweon Heo ◽  
...  
Keyword(s):  
Climate Change ◽  
Population Structure ◽  
Miscanthus Sinensis ◽  
Past Climate ◽  
Past Climate Change

scholarly journals Genomic signatures in the coral holobiont reveal host adaptations driven by Holocene climate change and reef specific symbionts

2020 ◽  
Vol 6 (48) ◽  
pp. eabc6318
Author(s):  
Ira Cooke ◽  
Hua Ying ◽  
Sylvain Forêt ◽  
Pim Bongaerts ◽  
Jan M. Strugnell ◽  
...  
Keyword(s):  
Climate Change ◽  
Population Structure ◽  
Skeletal Development ◽  
Host Population ◽  
Genomic Signatures ◽  
Long Reads ◽  
Adaptive Processes ◽  
Acropora Tenuis ◽  
Whole Genome Resequencing ◽  
Genetic Signatures

Genetic signatures caused by demographic and adaptive processes during past climatic shifts can inform predictions of species’ responses to anthropogenic climate change. To identify these signatures in Acropora tenuis, a reef-building coral threatened by global warming, we first assembled the genome from long reads and then used shallow whole-genome resequencing of 150 colonies from the central inshore Great Barrier Reef to inform population genomic analyses. We identify population structure in the host that reflects a Pleistocene split, whereas photosymbiont differences between reefs most likely reflect contemporary (Holocene) conditions. Signatures of selection in the host were associated with genes linked to diverse processes including osmotic regulation, skeletal development, and the establishment and maintenance of symbiosis. Our results suggest that adaptation to post-glacial climate change in A. tenuis has involved selection on many genes, while differences in symbiont specificity between reefs appear to be unrelated to host population structure.

scholarly journals Chimpanzee population structure in Cameroon and Nigeria is associated with habitat variation that may be lost under climate change

2015 ◽  
Vol 15 (1) ◽  
pp. 2 ◽  
Author(s):  
Paul R Sesink Clee ◽  
Ekwoge E Abwe ◽  
Ruffin D Ambahe ◽  
Nicola M Anthony ◽  
Roger Fotso ◽  
...  
Keyword(s):  
Climate Change ◽  
Population Structure ◽  
Habitat Variation ◽  
Chimpanzee Population

Abies georgei Population Structure and Dynamics of the Baima Snow Mountain, Yunnan, China

2014 ◽  
Vol 522-524 ◽  
pp. 1059-1064
Author(s):  
Ru Zhao ◽  
Xi Qing Deng ◽  
Gong Sheng Wu ◽  
Li Li
Keyword(s):  
Climate Change ◽  
Population Structure ◽  
Age Structure ◽  
Wildlife Habitat ◽  
Nature Protection ◽  
Abnormal Growth ◽  
Age Class ◽  
Population Structure And Dynamics ◽  
Set Up ◽  
The Impact

Climate change will result in the distribution range of plants that have changed and the impact on wildlife habitat quality. We will explore the Baima Snow Mountain Nature Protection AreaAbies georgeipopulation structure change and climate change impact on the growth ofAbies georgeipopulation, which can offer theoretical basis for biodiversity protection. Understanding the ecological characteristics is necessary to analyse its population structure and probe into the causes. We set up 27 sample plots for field study above 3300m of Baima Snow Mountain in the northwest of Yunnan Province. We mapped age class distribution and number of survival individuals at different altitudes for analyzing the population age, structure and quantitative characteristics.Abies georgeihas a stable development on mid-altitude. The population at mid-altitude showed a growing trend with a large proportion of saplings and number of individuals decreased with increase of age. The age structure and densities of low altitude shows a distinct increase in the number of survival individuals. Compared with other altitudes,Abies georgeipopulation of each age classes is reasonable, except declining of age class I. The abnormal growth of juveniles at low and high altitudes, which may be caused by climate changes, becomes the disadvantage ofAbies georgeipopulation in the future.

scholarly journals Genome sequencing and morphometric analysis of alpine bumblebees experiencing climate change reveal ongoing phenotypic shifts and a lack of population structure

2021 ◽  
Author(s):  
Matthew J. Christmas ◽  
Julia C. Jones ◽  
Anna Olsson ◽  
Ola Wallerman ◽  
Ignas Bunikis ◽  
...  
Keyword(s):  
Climate Change ◽  
Population Structure ◽  
Body Size ◽  
Morphological Change ◽  
Genome Sequencing ◽  
Digestive Enzyme ◽  
Size Variation ◽  
Genetic Associations ◽  
Genetic Substructure ◽  
Tongue Length

ABSTRACTPopulations of the bumblebees Bombus sylvicola and Bombus balteatus in Colorado have experienced decreases in tongue length, a trait important for plant-pollinator mutualisms, in the last six decades. It is hypothesized that this reflects selection exerted by changes in floral composition under climate change. Here we combine extensive morphometric and population genomic data to investigate population structure, whether morphological change is ongoing, and the genetic basis of morphological change. We generate highly-contiguous genome assemblies of both species using long-read sequencing. We then perform whole-genome sequencing and morphometric measurements of 580 samples of these species from seven high-altitude localities. Out of 281 samples originally identified as B. sylvicola, 67 formed a separate genetic cluster comprising the newly-discovered cryptic species B. incognitus. However, there is very little additional genetic substructure, suggesting that gene flow occurs readily between mountains. We find a significant decrease in tongue length between bees collected between 2008-2014 and in 2017, indicating that morphological shifts are ongoing. We did not discover any genetic associations with tongue length, but a SNP related to production of a proteolytic digestive enzyme is implicated in body size variation. We identify evidence of covariance between kinship and both tongue length and body size, which is suggestive of a genetic component of these traits, although it is not possible to rule out shared environmental effects between colonies. Our results provide evidence for ongoing evolution of a morphological trait important for pollination and indicate that this trait likely has a complex genetic and environmental basis.

scholarly journals How climate change and wildlife management affect population structure in wild boars

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Sebastian G. Vetter ◽  
Zsófia Puskas ◽  
Claudia Bieber ◽  
Thomas Ruf
Keyword(s):  
Climate Change ◽  
Population Structure ◽  
Wildlife Management ◽  
Wild Boars
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