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RST Apology to Tasmanian Aboriginal people 2021.

Growth and photosynthetic responses to elevated [C02] in grasses from Tasmanian native pasture

Papers & Reports

Summary

Six species of grass (four C3 and two C4) from southeastern Australian native pastures were grown in controlled environment cabinets at current (~370 mol CO2 mol-I) and twice current (~750 mol CO2 mol-I) cabinet [C02]. Photosynthetic gas exchange and above-ground biomass were estimated after seven weeks. Cabinet [C02] had a highly significant impact on above-ground biomass (P<0.0003) with plants exposed to elevated [C02] having on average 78% greater above-ground biomass than the controls. The relative increase of above-ground biomass caused by elevated [C02] varied among species. [C02] during gas exchange measurements and species had highly significant impacts on carbon assimilation and evapotranspiration rates, stomatal conductance and water-use efficiency. Cabinet [C02] had a significant impact on carbon assimilation rate only, for which there was a significant cabinet [C02] x species interaction. Carbon assimilation rate was influenced by cabinet [C02] only for Poa labillardierei, but this may well be related to pot conditions. Three-factor analysis of variance found no interaction between cabinet [C02] and [C02] during photosynthetic measurements, further supporting a lack of photosynthetic acclimation to elevated [C02] in young plants of these temperate Australian grass species.  

Keywords:

Royal Society of Tasmania, RST, Van Diemens Land, natural history, science, ecology, taxonomy, botany, zoology, geology, geography, papers & proceedings, Australia, UTAS Library

Acknowledgement of Country

The Royal Society of Tasmania acknowledges, with deep respect, the traditional owners of this land, and the ongoing custodianship of the Aboriginal people of Tasmania. The Society pays respect to Elders past, present and emerging. We acknowledge that Tasmanian Aboriginal Peoples have survived severe and unjust impacts resulting from invasion and dispossession of their Country. As an institution dedicated to the advancement of knowledge, the Royal Society of Tasmania recognises Aboriginal cultural knowledge and practices and seeks to respect and honour these traditions and the deep understanding they represent.

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On 15 February 2021, the Royal Society of Tasmania offered a formal Apology to the Tasmanian Aboriginal people.