Bromus tectorum L. (cheatgrass) is a dominant weed that has increased the frequency of wildfire in western North America since being introduced about 120 years ago from Central Asia. Cheatgrass germinates in the fall, overwinters as young seedlings, grows rapidly in early spring, and completes the life cycle by early June. The dead grass then serves as fuel for wildfires. Cheatgrass seeds survive fire well while competing native perennials do not. Cheatgrass subpopulations have adapted to the thermal environments of different habitats in little more than a century. Calorespirometry was employed to study the effects of temperature (from 5 to 45°C) on growth rate, defined as net anabolic rate. Growth rate versus temperature curves tend to be bimodal for eleven subpopulations of cheatgrass. There are different growth rate responses to temperature among subpopulations, which appear to match the temperature profile of the native environment during the growth season and maximize growth. Both respiratory rates and efficiencies differ according to microclimate.
Russian Journal of Plant Physiology – Springer Journals
Published: Oct 17, 2004
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera