Maybe it is the higher water content of the atmosphere is causing more plant growth?

As CO2 concentration increases and night time minimum temperatures get higher plants lose the ability to take in nitrogen and eventually the plants can’t even absorb CO2!

Nope, we need to decrease CO2 concentration in the atmosphere.

below 400ppm would be good.

You missed the significance of plants not taking up nitrogen? No nitrogen no protein!

The seas are becoming more acidic or, if you like, less alkaline and that is having drastic effects on zooplankton.

Jovial Monk wrote on Oct 20^th, 2016 at 7:35pm:


If you have a look at protein in say Weetbix, 2 biscuits gets you less than 10% of your daily balance.

', growth of plants at elevated CO2 concentrations of 475–600 ppm increases leaf photosynthetic rates by an average of 40% (Ainsworth & Rogers 2007). Carbon dioxide concentrations are also important in regulating the openness of stomata, pores through which plants exchange gasses, with the external environment. Open stomata allow CO2 to diffuse into leaves for photosynthesis, but also provide a pathway for water to diffuse out of leaves. Plants therefore regulate the degree of stomatal opening (related to a measure known as stomatal conductance) as a compromise between the goals of maintaining high rates of photosynthesis and low rates of water loss. As CO2 concentrations increase, plants can maintain high photosynthetic rates with relatively low stomatal conductance.'

'Elevated CO2 also leads to changes in the chemical composition of plant tissues. Due to increased photosynthetic activity, leaf nonstructural carbohydrates (sugars and starches) per unit leaf area increase on average by 30–40% under FACE elevated CO2 (Ainsworth 2008; Ainsworth & Long 2005). Leaf nitrogen concentrations in plant tissues typically decrease in FACE under elevated CO2, with nitrogen per unit leaf mass decreasing on average by 13% (Ainsworth & Long 2005).'

' Effects on human nutrition are likely as well. In FACE experiments, protein concentrations in grains of wheat, rice and barley, and in potato tubers, are decreased by 5–14% under elevated CO2 (Taub et al. 2008). '

http://www.nature.com/scitable/knowledge/library/effects-of-rising-atmospheric-c...

So up to a 40% increase in yield. Protein down by 5-14%. But proteins, from plants, are not solely or even a large portion of a diet.

Jovial Monk wrote on Oct 20^th, 2016 at 8:34pm:



Citation needed.

'The shell game has been of particular interest to me after reading a scientific letter “Volcanic carbon dioxide vents show ecosystem effects of ocean acidification” published in Nature a couple of years ago. Since then there has been a deluge of alarmist warnings on “Ocean Acidification” – including one in the Feb/March issue of Dive Pacific from an organization called the “International Union for the Conservation of Nature” – but no actual reefs destroyed by it, of course.'

'The reason for my scepticism was my own well-publicised underwater observations at Dobu Island in Milne Bay where CO2 vents bubble through a thriving coral reef. Just maybe, I thought, these people do not a have a clue what they are writing about. So when they approached me to see if they could dive Dobu I said of course, but that I was not interested in cherry picking data to conform to any conspiracy to promote Anthropogenic Global Warming. Interestingly I never heard back from them.'

http://www.halsteaddiving.com/adult-section-stories/global-fawning/the-shell-gam...

miketrees wrote on Oct 20^th, 2016 at 9:01pm:

No, as night time minimum temperatures rise the plant is less able to absorb nitrogen. In greenhouses you can increase nitrogen in the fertiliser used. Over the bulk of the countryside—nope nope nope.

Animals concentrate plant protein.

Weetbix is foul crap!

Find something about widescale vegetation.