{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,11]],"date-time":"2026-10-11T05:52:19Z","timestamp":1791697939846,"version":"4.3.4"},"reference-count":89,"publisher":"Oxford University Press (OUP)","issue":"1","license":[{"start":{"date-parts":[[2026,7,4]],"date-time":"2026-07-04T00:00:00Z","timestamp":1783123200000},"content-version":"vor","delay-in-days":184,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Lawrence Livermore National Laboratory was conducted under the auspices of the U.S","award":["DE-AC52-07NA27344"],"award-info":[{"award-number":["DE-AC52-07NA27344"]}]},{"name":"Soil Microbiome Scientific Focus Area","award":["SCW1632 [to J.P.-R.]"],"award-info":[{"award-number":["SCW1632 [to J.P.-R.]"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,1,14]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Viruses have the potential to influence microbial community structure and elemental cycling in soils, but it remains unclear how these communities are distributed across space and time, which can shape how they respond to environmental change and impact ecosystem processes. Mediterranean climate ecosystems, with their pronounced seasonal moisture fluctuations, offer an ideal system to examine viral biogeography. While previous studies hint at spatial structuring and moisture controls on viral communities, temporal responses to seasonal moisture shifts have not been comprehensively investigated in situ. Here, we generated 59 viromes and leveraged 89 metagenomes from two Mediterranean climate annual grasslands to measure double-stranded DNA soil viral communities across horizontal space (sampling zone), depth, and key seasonal stages of the Mediterranean water year (e.g. plant productivity, dry down, and wetup). Sampling zone was the dominant driver of viral community composition in viromes, with time secondarily explaining variation in viral communities. In contrast, viral richness and DNA yields varied primarily across time. Spatial structuring also emerged in viruses recovered from metagenomes, with depth having the strongest effect, followed by sampling zone. Environmental variables and predicted host distributions partially explained these patterns, but substantial variation remained unaccounted for, suggesting that dispersal limitation, though not directly tested in this study, could potentially underlie these patterns. Overall, double-stranded DNA soil viral communities were primarily structured by spatial factors, with temporal and environmental influences acting secondarily, highlighting the importance of fine-scale spatial dynamics in understanding viral ecology. Future studies should explicitly examine the role of dispersal limitation and fine-scale host\u2013environment interactions to fully resolve drivers of soil viral biogeography.<\/jats:p>","DOI":"10.1093\/ismeco\/ycag189","type":"journal-article","created":{"date-parts":[[2026,7,3]],"date-time":"2026-07-03T11:54:18Z","timestamp":1783079658000},"source":"Crossref","is-referenced-by-count":1,"title":["Spatial and depth structuring predominate over temporal variation in Mediterranean climate grassland soil viral communities"],"prefix":"10.1093","volume":"6","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8834-9044","authenticated-orcid":false,"given":"Jane D","family":"Fudyma","sequence":"first","affiliation":[{"name":"Department of Plant Pathology, University of California , Davis, CA 95616 ,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Petar","family":"Penev","sequence":"additional","affiliation":[{"name":"Earth and Planetary Science, University of California , Berkeley, CA 94720 ,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Katerina","family":"Estera-Molina","sequence":"additional","affiliation":[{"name":"Department of Environmental Science, Policy, and Management, University of California , Berkeley, CA 94720 ,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jordan","family":"Hoff","sequence":"additional","affiliation":[{"name":"Earth and Planetary Science, University of California , Berkeley, CA 94720 ,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Steven J","family":"Blazewicz","sequence":"additional","affiliation":[{"name":"Lawrence Livermore National Laboratory , Livermore, CA 94550 ,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jennifer","family":"Pett-Ridge","sequence":"additional","affiliation":[{"name":"Lawrence Livermore National Laboratory , Livermore, CA 94550 ,","place":["United States"]},{"name":"Innovative Genomics Institute, University of California Berkeley , Berkeley, CA 94704 ,","place":["United States"]},{"name":"Life & Environmental Sciences Department, University of California Merced , Merced, CA 95343 ,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9983-5566","authenticated-orcid":false,"given":"Joanne B","family":"Emerson","sequence":"additional","affiliation":[{"name":"Department of Plant Pathology, University of California , Davis, CA 95616 ,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2026,7,4]]},"reference":[{"key":"2026082106463053600_ref1","doi-asserted-by":"publisher","first-page":"201","DOI":"10.1146\/annurev-virology-101416-041639","article-title":"Viruses in soil ecosystems: an unknown quantity within an unexplored 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