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Climate change plant distribution

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https://www.readbyqxmd.com/read/28439286/snp-discovery-and-genetic-variation-of-candidate-genes-relevant-to-heat-tolerance-and-agronomic-traits-in-natural-populations-of-sand-rice-agriophyllum-squarrosum
#1
Pengshan Zhao, Jiwei Zhang, Chaoju Qian, Qin Zhou, Xin Zhao, Guoxiong Chen, Xiao-Fei Ma
The extreme stress tolerance and high nutritional value of sand rice (Agriophyllum squarrosum) make it attractive for use as an alternative crop in response to concerns about ongoing climate change and future food security. However, a lack of genetic information hinders understanding of the mechanisms underpinning the morphological and physiological adaptations of sand rice. In the present study, we sequenced and analyzed the transcriptomes of two individuals representing semi-arid [Naiman (NM)] and arid [Shapotou (SPT)] sand rice genotypes...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28437594/a-mesoamerican-origin-of-cherimoya-annona-cherimola-mill-implications-for-the-conservation-of-plant-genetic-resources
#2
N Larranaga, F J Albertazzi, G Fontecha, M Palmieri, H Rainer, M van Zonneveld, J I Hormaza
Knowledge on the structure and distribution of genetic diversity is a key aspect in order to plan and execute an efficient conservation and utilization of the genetic resources of any crop as well as for determining historical demographic inferences. In this work, a large data set of 1765 accessions of cherimoya (Annona cherimola Mill, Annonaceae), an underutilized fruit tree crop native to the neotropics and used as a food source by pre-Columbian cultures, was collected from 6 different countries across the American continent and amplified with 9 highly informative microsatellite markers...
April 24, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28426818/alternative-glacial-interglacial-refugia-demographic-hypotheses-tested-on-cephalocereus-columna-trajani-cactaceae-in-the-intertropical-mexican-drylands
#3
Amelia Cornejo-Romero, Carlos Fabián Vargas-Mendoza, Gustavo F Aguilar-Martínez, Javier Medina-Sánchez, Beatriz Rendón-Aguilar, Pedro Luis Valverde, Jose Alejandro Zavala-Hurtado, Alejandra Serrato, Sombra Rivas-Arancibia, Marco Aurelio Pérez-Hernández, Gerardo López-Ortega, Cecilia Jiménez-Sierra
Historic demography changes of plant species adapted to New World arid environments could be consistent with either the Glacial Refugium Hypothesis (GRH), which posits that populations contracted to refuges during the cold-dry glacial and expanded in warm-humid interglacial periods, or with the Interglacial Refugium Hypothesis (IRH), which suggests that populations contracted during interglacials and expanded in glacial times. These contrasting hypotheses are developed in the present study for the giant columnar cactus Cephalocereus columna-trajani in the intertropical Mexican drylands where the effects of Late Quaternary climatic changes on phylogeography of cacti remain largely unknown...
2017: PloS One
https://www.readbyqxmd.com/read/28426754/assessing-environmental-attributes-and-effects-of-climate-change-on-sphagnum-peatland-distributions-in-north-america-using-single-and-multi-species-models
#4
Tobi A Oke, Heather A Hager
The fate of Northern peatlands under climate change is important because of their contribution to global carbon (C) storage. Peatlands are maintained via greater plant productivity (especially of Sphagnum species) than decomposition, and the processes involved are strongly mediated by climate. Although some studies predict that warming will relax constraints on decomposition, leading to decreased C sequestration, others predict increases in productivity and thus increases in C sequestration. We explored the lack of congruence between these predictions using single-species and integrated species distribution models as proxies for understanding the environmental correlates of North American Sphagnum peatland occurrence and how projected changes to the environment might influence these peatlands under climate change...
2017: PloS One
https://www.readbyqxmd.com/read/28422136/the-relationship-between-climate-change-and-the-endangered-rainforest-shrub-triunia-robusta-proteaceae-endemic-to-southeast-queensland-australia
#5
Yoko Shimizu-Kimura, Arnon Accad, Alison Shapcott
Threatened species in rainforests may be vulnerable to climate change, because of their potentially narrow thermal tolerances, small population sizes and restricted distributions. This study modelled climate induced changes on the habitat distribution of the endangered rainforest plant Triunia robusta, endemic to southeast Queensland, Australia. Species distribution models were developed for eastern Australia at 250 m grids and southeast Queensland at 25 m grids using ground-truthed presence records and environmental predictor data...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28409227/evolutionary-responses-to-climate-change-in-a-range-expanding-plant
#6
Mirka Macel, Tomáš Dostálek, Sonja Esch, Anna Bucharová, Nicole M van Dam, Katja Tielbörger, Koen J F Verhoeven, Zuzana Münzbergová
To understand the biological effects of climate change, it is essential to take into account species' evolutionary responses to their changing environments. Ongoing climate change is resulting in species shifting their geographical distribution ranges poleward. We tested whether a successful range expanding plant has rapidly adapted to the regional conditions in its novel range, and whether adaptation could be driven by herbivores. Furthermore, we investigated if enemy release occurred in the newly colonized areas and whether plant origins differed in herbivore resistance...
April 13, 2017: Oecologia
https://www.readbyqxmd.com/read/28397796/geographic-barriers-and-pleistocene-climate-change-shaped-patterns-of-genetic-variation-in-the-eastern-afromontane-biodiversity-hotspot
#7
Mario Mairal, Isabel Sanmartín, Alberto Herrero, Lisa Pokorny, Pablo Vargas, Juan J Aldasoro, Marisa Alarcón
The Eastern African Afromontane forest is getting increased attention in conservation studies because of its high endemicity levels and shrinking geographic distribution. Phylogeographic studies have found evidence of high levels of genetic variation structured across the Great Rift System. Here, we use the epiphytic plant species Canarina eminii to explore causal explanations for this pattern. Phylogeographic analyses were undertaken using plastid regions and AFLP fragments. Population genetic analyses, Statistical Parsimony, and Bayesian methods were used to infer genetic diversity, genealogical relationships, structure, gene flow barriers, and the spatiotemporal evolution of populations...
April 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28394937/the-brazilian-freshwater-wetscape-changes-in-tree-community-diversity-and-composition-on-climatic-and-geographic-gradients
#8
Florian Wittmann, Márcia C M Marques, Geraldo Damasceno Júnior, Jean Carlos Budke, Maria T F Piedade, Astrid de Oliveira Wittmann, Juan Carlos Montero, Rafael L de Assis, Natália Targhetta, Pia Parolin, Wolfgang J Junk, J Ethan Householder
Wetlands harbor an important compliment of regional plant diversity, but in many regions data on wetland diversity and composition is still lacking, thus hindering our understanding of the processes that control it. While patterns of broad-scale terrestrial diversity and composition typically correlate with contemporary climate it is not clear to what extent patterns in wetlands are complimentary, or conflicting. To elucidate this, we consolidate data from wetland forest inventories in Brazil and examine patterns of diversity and composition along temperature and rainfall gradients spanning five biomes...
2017: PloS One
https://www.readbyqxmd.com/read/28386943/pinus-taeda-forest-growth-predictions-in-the-21-st-century-vary-with-site-mean-annual-temperature-and-site-quality
#9
Carlos A Gonzalez-Benecke, Robert O Teskey, Heather Dinon-Aldridge, Timothy A Martin
Climate projections from 20 downscaled global climate models (GCMs) were used with the 3-PG model to predict the future productivity and water use of planted loblolly pine (Pinus taeda) growing across the southeastern U.S. Predictions were made using Representative Concentration Pathways (RCP) 4.5 and 8.5. These represent scenarios in which total radiative forcing stabilizes before 2100 (RCP 4.5) or continues increasing throughout the century (RCP 8.5). Thirty six sites evenly distributed across the native range of the species were used in the analysis...
April 7, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28386059/the-demographic-response-of-a-deciduous-shrub-the-indigofera-bungeana-complex-fabaceae-to-the-pleistocene-climate-changes-in-east-asia
#10
Xue-Li Zhao, Xin-Fen Gao, Zhang-Ming Zhu, Yun-Dong Gao, Bo Xu
East Asia harbors the highest level of floristic diversity among the world's temperate regions. Despite the increase in phylogeographic studies of temperate plants in East Asia, far less attention has been paid to widely distributed deciduous shrubs that widespread across several floral regions. We sequenced two chloroplast DNA (cpDNA) fragments (ndhJ-trnF and trnD-trnT) and one nuclear DNA (Pgk1) of 472 individuals from 51 populations of such a group, the Indigofera bungeana complex. We used population genetic data as well as ecological niche modelling to examine the evolutionary history and glacial refugia during the Last Glacial Maximum (LGM) of this group...
April 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28369998/the-importance-of-hydraulic-architecture-to-the-distribution-patterns-of-trees-in-a-central-amazonian-forest
#11
Luiza H M Cosme, Juliana Schietti, Flávia R C Costa, Rafael S Oliveira
Species distributions and assemblage composition may be the result of trait selection through environmental filters. Here, we ask whether filtering of species at the local scale could be attributed to their hydraulic architectural traits, revealing the basis of hydrological microhabitat partitioning in a Central Amazonian forest. We analyzed the hydraulic characteristics at tissue (anatomical traits, wood specific gravity (WSG)), organ (leaf area, specific leaf area (SLA), leaf area : sapwood area ratio) and whole-plant (height) levels for 28 pairs of congeneric species from 14 genera restricted to either valleys or plateaus of a terra-firme forest in Central Amazonia...
March 29, 2017: New Phytologist
https://www.readbyqxmd.com/read/28369162/species-climate-range-influences-hydraulic-and-stomatal-traits-in-eucalyptus-species
#12
Aimee E Bourne, Danielle Creek, Jennifer M R Peters, David S Ellsworth, Brendan Choat
Background and Aims: Plant hydraulic traits influence the capacity of species to grow and survive in water-limited environments, but their comparative study at a common site has been limited. The primary aim of this study was to determine whether selective pressures on species originating in drought-prone environments constrain hydraulic traits among related species grown under common conditions. Methods: Leaf tissue water relations, xylem anatomy, stomatal behaviour and vulnerability to drought-induced embolism were measured on six Eucalyptus species growing in a common garden to determine whether these traits were related to current species climate range and to understand linkages between the traits...
March 27, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28369108/phylogeographic-patterns-of-lygus-pratensis-hemiptera-miridae-evidence-for-weak-genetic-structure-and-recent-expansion-in-northwest-china
#13
Li-Juan Zhang, Wan-Zhi Cai, Jun-Yu Luo, Shuai Zhang, Chun-Yi Wang, Li-Min Lv, Xiang-Zhen Zhu, Li Wang, Jin-Jie Cui
Lygus pratensis (L.) is an important cotton pest in China, especially in the northwest region. Nymphs and adults cause serious quality and yield losses. However, the genetic structure and geographic distribution of L. pratensis is not well known. We analyzed genetic diversity, geographical structure, gene flow, and population dynamics of L. pratensis in northwest China using mitochondrial and nuclear sequence datasets to study phylogeographical patterns and demographic history. L. pratensis (n = 286) were collected at sites across an area spanning 2,180,000 km2, including the Xinjiang and Gansu-Ningxia regions...
2017: PloS One
https://www.readbyqxmd.com/read/28358825/nature-s-patchwork-how-water-sources-and-soil-salinity-determine-the-distribution-and-structure-of-halophytic-plant-communities-in-arid-environments-of-the-eastern-pamir
#14
Monika Mętrak, Łukasz Chachulski, Dovutsho Navruzshoev, Paweł Pawlikowski, Elżbieta Rojan, Marcin Sulwiński, Małgorzata Suska-Malawska
The eastern part of the Pamir Mountains, located in Central Asia, is characterized by great climatic continentality and aridity. Wetlands developed in this hostile region are restricted to spring areas, terraces of shallow lakes or floodplains along rivers, and provide diversified ecosystem services e.g. as water reservoirs, refugia for rare species and pastures for domestic cattle. These ecosystems are particularly susceptible to climate changes, that in the Pamir Mountains result in increased temperatures, intense permafrost/glacial melt and alterations of precipitation patterns...
2017: PloS One
https://www.readbyqxmd.com/read/28348212/climate-change-both-facilitates-and-inhibits-invasive-plant-ranges-in-new-england
#15
Cory Merow, Sarah Treanor Bois, Jenica M Allen, Yingying Xie, John A Silander
Forecasting ecological responses to climate change, invasion, and their interaction must rely on understanding underlying mechanisms. However, such forecasts require extrapolation into new locations and environments. We linked demography and environment using experimental biogeography to forecast invasive and native species' potential ranges under present and future climate in New England, United States to overcome issues of extrapolation in novel environments. We studied two potentially nonequilibrium invasive plants' distributions, Alliaria petiolata (garlic mustard) and Berberis thunbergii (Japanese barberry), each paired with their native ecological analogs to better understand demographic drivers of invasions...
March 27, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28342277/climatic-variation-modulates-the-indirect-effects-of-large-herbivores-on-small-mammal-habitat-use
#16
Ryan A Long, Alois Wambua, Jacob R Goheen, Todd M Palmer, Robert M Pringle
Large mammalian herbivores (LMH) strongly shape the composition and architecture of plant communities. A growing literature shows that negative direct effects of LMH on vegetation frequently propagate to suppress the abundance of smaller consumers. Indirect effects of LMH on the behaviour of these consumers, however, have received comparatively little attention despite their potential ecological significance. We sought to understand (i) how LMH indirectly shape small-mammal habitat use by altering the density and distribution of understory plants; (ii) how these effects vary with climatic context (here, seasonality in rainfall); and (iii) the extent to which behavioural responses of small mammals are contingent upon small-mammal density...
March 25, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28338840/differences-in-functional-and-xylem-anatomical-features-allow-cistus-species-to-co-occur-and-cope-differently-with-drought-in-the-mediterranean-region
#17
José M Torres-Ruiz, Hervé Cochard, Elsa Fonseca, Eric Badel, Luiz Gazarini, Margarida Vaz
A significant increase in drought events frequency is predicted for the next decades induced by climate change, potentially affecting plant species mortality rates and distributions worldwide. The main trigger of plant mortality is xylem hydraulic failure due to embolism and induced by the low pressures at which water is transported through xylem. As the Mediterranean basin will be severely affected by climate change, the aim of this study was to provide novel information about drought resistance and tolerance of one of its most widely distributed and common genera as a case study: the genus Cistus...
February 27, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28338733/genetic-adaptation-and-phenotypic-plasticity-contribute-to-greater-leaf-hydraulic-tolerance-in-response-to-drought-in-warmer-climates
#18
Chris J Blackman, Michael J Aspinwall, David T Tissue, Paul D Rymer
The ability of plants to maintain an intact water transport system in leaves under drought conditions is intimately linked to survival and can been be seen as adaptive in shaping species climatic limits. Large differences in leaf hydraulic vulnerability to drought are known among species from contrasting climates, yet whether this trait varies among populations within a single species and, furthermore, whether it is altered by changes in growth conditions, remain unclear. We examined intraspecific variation in both leaf water transport capacity (Kleaf) and leaf hydraulic vulnerability to drought (P50leaf) among eight populations of Corymbia calophylla (R...
February 9, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28334161/elevated-co2-and-warming-effects-on-grassland-plant-mortality-are-determined-by-the-timing-of-rainfall
#19
Mark J Hovenden, Paul C D Newton, Meagan Porter
Background and aims: Global warming is expected to increase the mortality rate of established plants in water-limited systems because of its effect on evapotranspiration. The rising CO 2 concentration ([CO 2 ]), however, should have the opposite effect because it reduces plant transpiration, delaying the onset of drought. This potential for elevated [CO 2 ] (eCO 2 ) to modify the warming effect on mortality should be related to prevailing moisture conditions. This study aimed to determine the impacts of warming by 2 °C and eCO 2 (550 μmol mol -1 ) on plant mortality in an Australian temperate grassland over a 6-year period and to test how interannual variation in rainfall influenced treatment effects...
February 28, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28334079/how-do-cold-adapted-plants-respond-to-climatic-cycles-interglacial-expansion-explains-current-distribution-and-genomic-diversity-in-primula-farinosa-l
#20
Spyros Theodoridis, Christophe Randin, Peter Szövényi, Florian C Boucher, Theofania S Patsiou, Elena Conti
Understanding the effects of past climatic fluctuations on the distribution and population-size dynamics of cold-adapted species is essential for predicting their responses to ongoing global climate change. In spite of the heterogeneity of cold-adapted species, two main contrasting hypotheses have been proposed to explain their responses to Late Quaternary glacial cycles, namely, the interglacial contraction versus the interglacial expansion hypotheses. Here, we use the cold-adapted plant Primula farinosa to test two demographic models under each of the two alternative hypotheses and a fifth, null model...
December 21, 2016: Systematic Biology
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