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close Home What We Do Who We Are Faculty Affiliated Faculty Administration Research Staff Postdoctoral Scientists Graduate Students Visitors Alumni Inclusion Publications 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 News McAllister McAllister Science in the Classroom Creative Call: A Night of Climate, Science, Art, & Story Art Scientific Illustrations Resources Prospective Students Employee Resources Seminar Schedule TRAP Ecoss Home What We Do Who We Are Faculty Affiliated Faculty Administration Research Staff Postdoctoral Scientists Graduate Students Visitors Alumni Inclusion Publications 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 News McAllister McAllister Science in the Classroom Creative Call: A Night of Climate, Science, Art, & Story Art Scientific Illustrations Resources Prospective Students Employee Resources Seminar Schedule TRAP Home The Center for Ecosystem Science and Society at Northern Arizona University studies how ecosystems respond to and shape environmental and climate change and works to communicate those discoveries in new ways to local and global communities. Collaborating with national laboratories and home to state-of-the-art research facilities, Ecoss trains scientists to apply broad trans-disciplinary thinking and leading-edge methods to the pressing challenges facing Earth. Our Science About Us Latest Post As ice recedes in Antarctica, new microbial research frontier opens for NAU, Texas Tech team April 20, 2020 New ECOSS study suggests phosphorus matters everywhere March 27, 2020 Latest Tweets Happy #Earthday! Thank you to all citizens, scientists, educators, artists, organizers out there working for enviro… https://t.co/3Qy4FF5UMT RT @NERweb : "What kind of art cuts through the noise?" | @NERweb writer @KateLPetersen on "Science-telling through art" @ESAFrontiers https… Contact Us Northern Arizona University, P.O. Box 5620, Flagstaff, AZ 86011 Support Us Please consider a charitable gift to the Center for Ecosystem Science and Society this year. Generous support from the university and grants from federal agencies cover only a part of our work, so your gift is an essential contribution. Gifts can be designated for student research, providing opportunities for undergraduate students to work with Ecoss scientists on cutting edge ecosystem research. Click here to support us Latest Publications Hou E, Luo Y, Kuang Y, Chen C, Lu X, Jiang L, Luo X, Wen D (2020) Global meta-analysis shows pervasive phosphorus limitation of aboveground plant production in natural terrestrial ecosystems . Nature Communications 11 (637) . Read Abstract / Download .PDF / Read Publication Plants are thought to be limited by phosphorus (P) especially in tropical regions. Here, Hou et al. report a meta-analysis of P fertilization experiments to show widespread P limitation on plant growth across terrestrial ecosystems modulated by climate, ecosystem properties, and fertilization regimes Twitter Facebook Google + Hartsell JA, Copeland SM, Munson SM, Butterfield BJ, Bradford JB (2020) Gaps and hotspots in the state of knowledge of pinyon-juniper communities . Forest Ecology and Management 455: 117628 . Read Abstract / Read Publication Pinyon-juniper (PJ) plant communities cover a large area across North America and provide critical habitat for wildlife, biodiversity and ecosystem functions, and rich cultural resources. These communities occur across a variety of environmental gradients, disturbance regimes, structural conditions and species compositions, including three species of juniper and two species of pinyon. PJ communities have experienced substantial changes in recent decades and identifying appropriate management strategies for these diverse communities is a growing challenge. Here, we surveyed the literature and compiled 441 studies to characterize patterns in research on PJ communities through time, across geographic space and climatic conditions, and among focal species. We evaluate the state of knowledge for three focal topics: 1) historical stand dynamics and responses to disturbance, 2) land management actions and their effects, and 3) potential future responses to changing climate. We identified large and potentially important gaps in our understanding of pinyon-juniper communities both geographically and topically. The effect of drought on Pinus edulis, the pinyon pine species in eastern PJ communities was frequently addressed, while few studies focused on drought effects on Pinus monophylla, which occurs in western PJ communities. The largest proportion of studies that examined land management actions only measured their effects for one year. Grazing was a common land-use across the geographic range of PJ communities yet was rarely studied. We found only 39 studies that had information on the impacts of anthropogenic climate change and most were concentrated on Pinus edulis. These results provide a synthetic perspective on PJ communities that can help natural resource managers identify relevant knowledge needed for decision-making and researchers design new studies to fill important knowledge gaps. Twitter Facebook Google + Guo JS, Hultine KR, Koch GW, Kropp H, Ogle K (2020) Temporal shifts in iso/anisohydry revealed from daily observations of plant water potential in a dominant desert shrub . New Phytologist 225(2): 713-726 . Read Abstract / Read Publication Plant species are characterized along a spectrum of isohydry to anisohydry depending on their regulation of water potential (?), but the plasticity of hydraulic strategies is largely unknown. The role of environmental drivers was evaluated in the hydraulic behavior of Larrea tridentata, a drought-tolerant desert shrub that withstands a wide range of environmental conditions. With a 1.5 yr time-series of 2324 in situ measurements of daily predawn and midday ?, the temporal variability of hydraulic behavior was explored in relation to soil water supply, atmospheric demand and temperature. Hydraulic behavior in Larrea was highly dynamic, ranging from partial isohydry to extreme anisohydry. Larrea exhibited extreme anisohydry under wet soil conditions corresponding to periods of high productivity, whereas partial isohydry was exhibited after prolonged dry or cold conditions, when productivity was low. Environmental conditions can strongly influence plant hydraulic behavior at relatively fast timescales, which enhances our understanding of plant drought responses. Although species may exhibit a dominant hydraulic behavior, variable environmental conditions can prompt plasticity in ? regulation, particularly for species in seasonally dry climates. Twitter Facebook Google + Links of Interest Ecoss Sitemap Ecoss YouTube Channel ... ", and replace the dummy content: name --...