Predicting impacts of global climate change on intraspecific genetic diversity benefits from realistic dispersal estimates

2013 ◽  
Vol 61 (6) ◽  
pp. 454 ◽  
Author(s):  
Paul E. Duckett ◽  
Adam J. Stow
Keyword(s):  
Climate Change ◽  
Genetic Diversity ◽  
Global Climate ◽  
Climate Change Impacts ◽  
Biologically Relevant ◽  
Mobile Species ◽  
Realistic Estimate ◽  
Intraspecific Genetic Diversity ◽  
Near Future ◽  
Gehyra Variegata

Global climates are rapidly changing, which for many species will require dispersal to higher altitudes and latitudes to maintain favourable conditions. Changes in distribution for less mobile species is likely to be associated with losses to genetic diversity, yet this cannot be quantified without understanding which parts of a species distribution will colonise favourable regions in the future. To address this we adopted a realistic estimate of dispersal with predicted changes in species distributions to estimate future levels of intraspecific genetic diversity. Using 740 geckos (Gehyra variegata) collected across their distribution in central and eastern inland Australia, we predict genetic loss within phylogenetically distinct units at both mtDNA and microsatellite markers between 2010 and 2070. We found that using a quantified and realistic estimate of dispersal resulted in significant declines to allelic richness (5.114 to 4.052), haplotype richness (7.215 to 4.589) and phylogenetic diversity (0.012 to 0.005) (P < 0.01). In comparison, predicted losses were substantially over- or underestimated when commonly applied dispersal scenarios were utilised. Using biologically relevant estimates of dispersal will help estimate losses of intraspecific genetic diversity following climate change impacts. This approach will provide critical information for the management of species in the near future.

scholarly journals THE FUTURE OF SUSTAINABLE RURAL TOURISM DEVELOPMENT – THE IMPACTS OF CLIMATE CHANGE

2017 ◽  
Vol XIX (3) ◽  
pp. 337-344 ◽  
Author(s):  
Martin Zsarnoczky
Keyword(s):  
Climate Change ◽  
Global Climate ◽  
Climate Change Impacts ◽  
Social Consequences ◽  
Rural Tourism ◽  
Rural Regions ◽  
Human Ecosystems ◽  
High Level ◽  
Near Future ◽  
Impacts Of Climate Change

Climate change a phenomenon mainly caused by the high level of greenhouse gas (GHG) emission into the atmosphere of the Earth - makes human ecosystems vulnerable and is predicted to affect our everyday life in the near future. The increased intensity of storms, cyclones, drought and flooding; the greater magnitude and frequency of heat and cold waves and the continuous rise of the sea-level are likely to generate more geopolitical conflicts, especially in the most vulnerable regions of the planet. The three main categories of climate change impacts are classified as environmental, economic and social effects. The economic and social consequences of climate change are expected to significantly reduce the resilience of rural tourism regions and their capability to successfully respond to other possible critical events. Due to the impacts of natural disasters and extreme climatic events, global climate change affects European rural regions, too. The development of sustainable rural tourism requires the in-depth understanding of the ongoing processes and the development of tools that will serve the interest of tourism and local people alike.

scholarly journals Global Potato Yields Increase Under Climate Change With Adaptation and CO2 Fertilisation

2020 ◽  
Vol 4 ◽  
Author(s):  
Stewart A. Jennings ◽  
Ann-Kristin Koehler ◽  
Kathryn J. Nicklin ◽  
Chetan Deva ◽  
Steven M. Sait ◽  
...  
Keyword(s):  
Climate Change ◽  
Climate Models ◽  
Global Climate ◽  
Climate Change Impacts ◽  
Global Scale ◽  
Global Climate Models ◽  
Adaptation To Climate Change ◽  
National Scale ◽  
Modeling Studies ◽  
Potato Yields

The contribution of potatoes to the global food supply is increasing—consumption more than doubled in developing countries between 1960 and 2005. Understanding climate change impacts on global potato yields is therefore important for future food security. Analyses of climate change impacts on potato compared to other major crops are rare, especially at the global scale. Of two global gridded potato modeling studies published at the time of this analysis, one simulated the impacts of temperature increases on potential potato yields; the other did not simulate the impacts of farmer adaptation to climate change, which may offset negative climate change impacts on yield. These studies may therefore overestimate negative climate change impacts on yields as they do not simultaneously include CO2 fertilisation and adaptation to climate change. Here we simulate the abiotic impacts of climate change on potato to 2050 using the GLAM crop model and the ISI-MIP ensemble of global climate models. Simulations include adaptations to climate change through varying planting windows and varieties and CO2 fertilisation, unlike previous global potato modeling studies. Results show significant skill in reproducing observed national scale yields in Europe. Elsewhere, correlations are generally positive but low, primarily due to poor relationships between national scale observed yields and climate. Future climate simulations including adaptation to climate change through changing planting windows and crop varieties show that yields are expected to increase in most cases as a result of longer growing seasons and CO2 fertilisation. Average global yield increases range from 9 to 20% when including adaptation. The global average yield benefits of adaptation to climate change range from 10 to 17% across climate models. Potato agriculture is associated with lower green house gas emissions relative to other major crops and therefore can be seen as a climate smart option given projected yield increases with adaptation.

Recent Trends, Issues, and Challenges in Water Resource Development and Global Climate Change

2017 ◽  
pp. 1-8
Author(s):  
Prakash Rao ◽  
Yogesh Patil
Keyword(s):  
Climate Change ◽  
Water Resource ◽  
Global Climate Change ◽  
Global Climate ◽  
Climate Change Impacts ◽  
Resource Development ◽  
Water Resource Development ◽  
Climatic Regime ◽  
Recent Trends

Climate change impacts are being felt in many parts of the world and have become an issue of major concern. Tropical countries particularly those in the Asian region are at greater risk and vulnerable to the impacts of climate change as indicated by the report of IPCC. With regard to India there are several impacts forecast which could have adverse consequences on the natural resources and ecosystems of the country making them vulnerable and reducing their capacity to cope with a changing climatic regime. This introductory chapter of the book provides an insight to the recent trends, issues and challenges in water resource development in context to the global climate change.

scholarly journals Impact of Climate Change on Crops Adaptation and Strategies to Tackle Its Outcome: A Review

Plants ◽  
2019 ◽  
Vol 8 (2) ◽  
pp. 34 ◽  
Author(s):  
Ali Raza ◽  
Ali Razzaq ◽  
Sundas Mehmood ◽  
Xiling Zou ◽  
Xuekun Zhang ◽  
...  
Keyword(s):  
Climate Change ◽  
Food Security ◽  
Crop Production ◽  
Climate Changes ◽  
Heat Waves ◽  
Negative Impact ◽  
Global Climate ◽  
Climate Change Impacts ◽  
Annual Rainfall ◽  
Ozone Level

Agriculture and climate change are internally correlated with each other in various aspects, as climate change is the main cause of biotic and abiotic stresses, which have adverse effects on the agriculture of a region. The land and its agriculture are being affected by climate changes in different ways, e.g., variations in annual rainfall, average temperature, heat waves, modifications in weeds, pests or microbes, global change of atmospheric CO2 or ozone level, and fluctuations in sea level. The threat of varying global climate has greatly driven the attention of scientists, as these variations are imparting negative impact on global crop production and compromising food security worldwide. According to some predicted reports, agriculture is considered the most endangered activity adversely affected by climate changes. To date, food security and ecosystem resilience are the most concerning subjects worldwide. Climate-smart agriculture is the only way to lower the negative impact of climate variations on crop adaptation, before it might affect global crop production drastically. In this review paper, we summarize the causes of climate change, stresses produced due to climate change, impacts on crops, modern breeding technologies, and biotechnological strategies to cope with climate change, in order to develop climate resilient crops. Revolutions in genetic engineering techniques can also aid in overcoming food security issues against extreme environmental conditions, by producing transgenic plants.

scholarly journals Emulating global climate change impacts on crop yields

2015 ◽  
Vol 15 (6) ◽  
pp. 499-525 ◽  
Author(s):  
Oluwole K Oyebamiji ◽  
Neil R Edwards ◽  
Philip B Holden ◽  
Paul H Garthwaite ◽  
Sibyll Schaphoff ◽  
...  
Keyword(s):  
Climate Change ◽  
Global Climate Change ◽  
Crop Yields ◽  
Global Climate ◽  
Climate Change Impacts

How climate change and regulations can affect the economics of mycotoxins

2016 ◽  
Vol 9 (5) ◽  
pp. 653-663 ◽  
Author(s):  
F. Wu ◽  
N.J. Mitchell
Keyword(s):  
Climate Change ◽  
Climatic Factors ◽  
Global Climate ◽  
Animal Health ◽  
The United States ◽  
Economic Losses ◽  
Regulatory Limits ◽  
Food And Feed ◽  
To Come ◽  
Near Future

In the decades to come, the one factor that will likely have the greatest effect on the economics of the mycotoxin problem is climate change. This article reviews the current state of known science on how the global climate has been changing in recent decades, as well as likely climate change trends in the near future. The article focuses in depth on how climatic variables affect fungal infection and production of specific mycotoxins in food crops, and how near-future climatic changes will shape the prevalence of these mycotoxins in crops in different parts of the world. Because of regulatory limits set on maximum allowable levels of mycotoxins in food and feed, growers will experience economic losses if climatic factors cause certain mycotoxins to become more prevalent. A case study is presented of how maize growers in the United States will experience increased economic losses due to slightly higher aflatoxin levels in maize, even if those levels may still be below regulatory limits. We discuss the overall expected economic impacts of climate change-induced mycotoxin contamination worldwide – not just market-related losses, but also losses to human and animal health and risks to food security. Aflatoxin is the mycotoxin that is most likely to increase under near-future climate scenarios; and thus is likely to pose the greatest amount of economic risk of all the mycotoxins.

Agro-ecological field vulnerability evaluation and climate change impacts in Souma area (Iran), using MicroLEIS DSS

Biologia ◽  
2009 ◽  
Vol 64 (3) ◽  
Author(s):  
Farzin Shahbazi ◽  
Ali Jafarzadeh ◽  
Mohammad Shahbazi
Keyword(s):  
Climate Change ◽  
Heavy Metal Contamination ◽  
Global Climate ◽  
Global Environmental Change ◽  
Agricultural Practices ◽  
Climate Change Impacts ◽  
Climate Data ◽  
Intergovernmental Panel ◽  
North West ◽  
Evaluation Approach

AbstractSoil erosion and contamination are two main desertification indices or land degradation agents in agricultural areas. Global climate change consequence is a priority to predict global environmental change impacts on these degradation risks. This agro-ecological approach can be especially useful when formulating soil specific agricultural practices based on the spatial variability of soils and related resources to reverse environmental degradation. Raizal and Pantanal models within the new MicroLEIS framework, the Ero&Con package, are database/expert system evaluation approach for assessing limitations to land use, or vulnerability of the land to specified agricultural degradation risks. This study was performed in Souma area with approximately 4100 ha extension in the North-West of Iran (west Azarbaijan). Based on 35 sampling soils, Typic Xerofluvents, Typic Calcixerepts, Fluventic Haploxerepts and Fluventic Endaquepts were classified as main subgroups. Climatological data, referred to temperature and precipitation of more than 36 consecutive years were collected from Urmieh station reports and stored in monthly Climate Database CDBm, as a major component of MicroLEIS DSS (CDBm) program. Climate data for a hypothetical future scenario were collected from the Intergovernmental Panel on Climate Change (IPCC) reports for the 2080s period. The evaluation approach predicts that attainable water erosion vulnerability classes were none (V1) very low (V2) and moderately low (V4) in the total of 72%, 13% and 15% of the Souma area, respectively and they will not affected by climate change. On contrary, attainable wind erosion vulnerability classes will increase. Also, phosphorous and heavy metal contamination vulnerability risks will not differ in two compared scenarios while nitrogen and pesticides vulnerability classes will be improved.

Effect of water availability and genetic diversity on flowering phenology, synchrony and reproductive investment in summer squash

2012 ◽  
Vol 151 (6) ◽  
pp. 775-786 ◽  
Author(s):  
L. G. CAMPBELL ◽  
J. LUO ◽  
K. L. MERCER
Keyword(s):  
Climate Change ◽  
Genetic Diversity ◽  
Global Climate ◽  
Abiotic Factors ◽  
Fruit Production ◽  
Local Climate ◽  
Flowering Synchrony ◽  
Female Function ◽  
Rate Of Increase ◽  
Female Flowers

SUMMARYCurrent agricultural practices rely on crops with developmental phenologies adapted to local climate, photoperiods and soils; however, global climate change will alter some abiotic factors (e.g. temperature and precipitation). Previously adapted varieties may be poorly prepared for these changing conditions, if such conditions induce mismatched phenologies. Crops that depend on cross-pollination and synchronous flowering may be most susceptible, e.g. monoecious plants have separate male and female flowers, and changes in flowering synchrony may alter yield. Using genetically diverse (open-pollinated (OP)) and genetically homogeneous (hybrid) varieties of a monoecious crop, courgette, also known as zuchinni (Cucurbita pepo), phenological responses to experimentally manipulated moisture conditions were explored in an agricultural context. Under drier and wetter conditions, the hybrid courgette plants shifted towards a male-biased floral sex ratio due to the reduced production of female flowers. However, flowering synchrony and fruit production were unaffected by moisture treatment in both varieties. The hybrid and OP varieties differed in many traits related to floral sex ratios, phenology, synchrony and fruit production. Further, the OP variety displayed more phenotypic variation than the hybrid in many traits. Being in a population context rather than relying on self-pollination increased the availability of potential mates for a given female flower in both the hybrid and, particularly, the OP variety. Thus, the increased genetic diversity found in OP v. hybrid varieties may buffer the possible environmental effects on flowering synchrony within a cropping context. Finally, the likelihood of female flowers setting fruit increased with the number of male flowers within a population, and the rate of increase was higher in the hybrid variety. In summary, climate change is predicted to reduce investment in female function in some monoecious crops and genetically diverse varieties may play an important role in maintaining reproductive synchrony in altered environments.

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