Cows at LAJA site, Puerto RicoCows and croplands dominate large portions of the U.S. How does this agriculture impact ecosystems? NEON field sites located on or near agricultural land – including some colocated with Long-TermAgroecosystem Research (LTAR) sites and Agricultural Research Stations – can help answer important questions about the interactions between agricultural activities and native ecosystems.

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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.