Sentences with phrase «limiting plant productivity»
``... the chief factor limiting plant productivity — photosynthetic efficiency — is the level of atmospheric carbon dioxide, which is currently at a relatively low level compared with previous eras in the earth's long history.»
http://instituteforenergyresearch.org/ Not exact matches
Healthy soil can be defined as soil that allows plants to grow to their maximum productivity without disease, fertility or pest problems that limit production, and without a need for unusual supplements or support.
In many parts of the ocean the productivity of phytoplankton — microscopic plants at the base of the marine food chain — is limited by the availability of dissolved iron.
Wright surmises that plant productivity is limited by energy from the sun and water availability, however the solar energy that transfers through each trophic level is what constrains richness as opposed to the total energy within a geographic area — the productivity hypothesis (Wright, 1983; Hawkins et al., 2003; Jetz, Kreft, Ceballos, and Mutke, 2009).
Healthy soil can be defined as soil that allows plants to grow to their maximum productivity without disease, fertility or pest problems that limit production, and without a need for unusual supplements or support.
However, in some regions and with further exacerbated climate change, high temperatures may already be or may become a limiting factor for plant productivity.