The researches show it affects, however, its affection mechanisms are still unknown.

Thank you my dear Mojtaba for your answer .

Definitely-- Oscillation of rainfall and abrupt temp. change poses adverse impact on productivity

Thank you my dear Abhijit for giving your answers in pictures .

Yes, climate change will affect crop production. Rise in temperature will boost population of pests and pathogens which will adversely affect the crop yield.

Owing to rise in temperature, the rate of the decomposition of organic matter in soil will be enhanced. This will affect the cycling of the nutrients, thus upsetting the fertility status of the soil.

Climate change will also result in increased rate of evaporation and transpiration leading to the scarcity of water resources, which in turn will affect the crop yield. The crop most affected will be paddy.

Thank you my dear Arvind for your positive scientific answers .Best regards .

Please take a look at this useful RG link.

Article Climate change has likely already affected global food production

yes

Certainly. It will affect food production. mishap in rainfall, monsoon changes and economical problems will hinder the food production.

Dr.Arun Prakash

Yes, it already does as can be seen in cereal harvests suffering under increased temperatures beyond their respective threshold.

In fish and other gill breathing aquatic organisms the lower dissolved oxygen content of warmer water already leads to two connected observations:

1) poleward movements, particulalry of mobile, species to remain within their preferred "temperature cloud" and

2a) reduced overall size as they need to spend more energy on oxygen extraction from the water and in general on gas exchange via gills so that less is available for growth

2b) gills being a surface while their body is a volume, the limitations in absolute oxygen availability as a result of lower concentrations reduces the max size. Thus the combined and reinforcing effects of warmer seas and inland waters and widespread overfishing leads to reduced harvests (smaller fish and not enough individuals left in the water to produce MSY (maximum sustainable yield - even accounting for 0.8 or 0.9 of single species MSY assessment to account for species interactions in the ecosystem). Global catches from capture fisheries decline since the mid-1990s.

See, among others https://books.google.ca/books?hl=en&lr=&id=qNepDwAAQBAJ&oi=fnd&pg=PA111&ots=JJzrOri5mI&sig=KE1ZJppyYBOoJdFmqQjL2qj0eJc#v=onepage&q&f=false

Yes, definitely climate change affect food production

Yes, indeed!

Dear Tawfiq M. Al Antary ,

growing up on the farm, growing seasons if different affected the insect population, honey bees, the rainfall and the snow pack affected the size of the grain kernels and hay crops. The protein levels then affected the milk production. So yes, climate change definitely affects the food chain. Anything that affects the food chain affects the chief consumers-HUMANS.

brigid

Dear Sir,

Yes, please read following reports for details:

http://www.fao.org/3/a-i6030e.pdf

http://www.fao.org/3/i9705en/i9705en.pdf

Kind regards,

Alok

Yes, climate change affect food production by changing pattern in rainfall, temperature and moisture & nutrient conditions of soil.

Please look those related RG article links:

Article Effects of climate change on global food production under SR...

Article Potential Impact of Climate Change on World Food Supply

Climate change affects food production. Temperate fruit can not be produce well in summer.

Change in climate pattern may increase disease and insect pressure which may hamper food production.

Owing to rise in carbon dioxide (CO2) concentration and temperature, the weed population particularly those belonging to Poaceae, Cyperaceae, Fabaceae and Euphorbiaceae families of flowering plants will increase which will adversely affect the crop yield.

Please also take a look at this useful RG discussion thread.

https://www.researchgate.net/post/What_are_the_negative_effects_of_climate_change_on_agriculture

Crop production would be badly affected by climate change. Aravind Singh has added many valuable links. Thanks to him for his effort.