Impacts of climate change on biodiversity
Journal Title: International Journal of Farming and Allied Sciences - Year 2014, Vol 3, Issue 7
Abstract
Considerable biotic changes have occurred globally during these cycles; for the last 11,000 years the Earth has been in a relatively stable warm phase of the cycle and is probably within a degree or two of being the warmest it has been for over 2 million years. At the global level, human activities have caused and will continue a loss in biodiversity. This paper considers the connection between climate and biodiversity. Climate change has synergistic effects with many of the biggest existing impacts to biodiversity. Many studies show that potential climate change impacts on biodiversity through habitat loss and fragmentation, invasive species, Species exploitation and Nutrient enrichment. Distributions tend to shift down temperature gradients. the direction of shifts vary considerably among species depending on which bioclimatic variables are most important in the models for each species (e.g. changes in moisture availability may differ from changes in temperature, and the direction of temperature gradients may alter seasonally), and some species show little or no change.
Authors and Affiliations
Saeed Sharafi, Parviz Haghighat Jou and Niloofar Alavi Tabaee
Effect of maize planting date and Johnson grass (Sorghum halopense L.) density on yield and yield components of maize
In order to evaluate the Johnson grass weed effect on the maize yield and yield component was performed an experiment as complete randomized block design with four replications and two planting date of maize in the Mog...
Energy efficiency for open-field grape production in Iran using Data Envelopment Analysis (DEA) approach
In this study a non-parametric method of data envelopment analysis (DEA) was applied to evaluate the energy efficiencies of open-field grape producer in east-Azerbaijan of Iran. The DEA method was done based on eight e...
Study on morphological traits of bread wheat genotypes and their relation with grain yield, under the condition of drought stress after anthesis and normal irrigation
In this investigation 12 bread wheat genotypes were examined for grain yield and some morphological traits in fragmented plots design in the form of complete randomized blocks with three times of recurring, in Ardabil...
The optimum condition under light and Media for Seed germination of Withania coagulans
Withania coagulans, a traditional medicine plant in Southern Iran has become relatively scarce due to over collection. Natural propagation of this species is by seed, but to improve poor germination and promote the ger...
The Diagnosis of Optimum Levels for Nutrients in Kiwifruit by DRIS Norms
To determine DRIS norms for kiwifruit trees, yield and leaf analysis data were collected from kiwifruit vines in mazandaran province (amol, chalous, tonekabon, nowshahr, sari and ramsar) and then assessed in a period o...