Who We Are
The LTAR Network is a growing group of researchers focused on finding solutions that maintain or increase agricultural productivity, environmental quality, and people well-being in spite of pressures such as climate change. Read more
Our Research Approach
The LTAR network combines strategic research projects with common measurements on multiple agroecosystems (croplands, rangelands, and pasturelands) and develops new technologies to address local and national challenges and opportunities.
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Data Access
LTAR scientists are responsible for managing a rich legacy of data spanning over seventy years for many sites. Collectively, it is estimated LTAR manages [200+ terabytes] of data.
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The 18 LTAR Network Sites
The 18 LTAR Network Sites collaborate in coordinated strategic research that leverages a rich legacy of research and data collection. Read more
(Click dots to open LTAR site page)
Follow @USLTAR
How is climate change affecting rangelands? Learn how ARS is working with stakeholders to protect the ecosystem of Southwest rangelands, ensuring agricultural production and rural economies remain sustainable and continue to thrive. https://t.co/YKSU7Yk1i7 #NationalAgWeek pic.twitter.com/v7uv4pBD8K
— Agricultural Research Service (@USDA_ARS) March 21, 2024
Seeds to cents: growing the economy starts with agriculture! Let's celebrate National Ag Week by recognizing the vital role of agriculture in our economy. From seeds to cents, farmers cultivate our future prosperity. pic.twitter.com/73UUd4sBfD
— Agricultural Research Service (@USDA_ARS) March 21, 2024
Make your mark on National Ag Day -- As we seek to "Grow a Climate for Tomorrow," view how future impacts on our climate can depend on the choices we make today in the 5th National Climate Assessment report. https://t.co/hkoyHov2sJ #NationalAgDay #AgDay24 pic.twitter.com/J4FjgEnKLb
— Agricultural Research Service (@USDA_ARS) March 19, 2024
Explore the updated Plant Hardiness Zone Map, featuring more detailed insights. With data from 13,000+ weather stations (a 60% increase from the 2012 version), the map’s zip code “widget” guides you on perennial plant choices for your hardiness zone https://t.co/EsjojzHHOM #AgDay pic.twitter.com/UoLD4GQW5Z
— Agricultural Research Service (@USDA_ARS) March 19, 2024
See how ARS climatologists have developed a first-of-its-kind Freeze Date Tool -- a publicly accessible zone map that pinpoints temperature changes for growers and planters at the county level. https://t.co/mPNdUc6GHA pic.twitter.com/4euFc5fu35
— Agricultural Research Service (@USDA_ARS) March 4, 2024
Water erosion is an important problem affecting our water quality and ability to produce enough food to sustain the world. What problems does water erosion pose for U.S. agriculture? How significant is the threat? How is USDA tackling the problem? Find out https://t.co/sykAjoaYy7 pic.twitter.com/oOxySkIfrr
— Agricultural Research Service (@USDA_ARS) March 2, 2024
Martha Anderson elected to the National Academy of Engineering Class of 2024 for her outstanding contributions to engineering research and for the application of thermal satellite remote sensing in hydrology. https://t.co/uTWEUJZA5w #NAE2024 pic.twitter.com/pjSw94tTYE
— Agricultural Research Service (@USDA_ARS) February 13, 2024
ABOUT LTAR
The USDA Agricultural Research Service (ARS) Long-Term Agroecosystem Research network consists of 18 Federal and university agricultural research sites with an average of over 50 years of history. The goal of this research network is to ensure sustained crop and livestock production and ecosystem services from agroecosystems, and to forecast and verify the effects of environmental trends, public policies, and emerging technologies.