{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T04:38:50Z","timestamp":1792643930253,"version":"4.5.0"},"reference-count":86,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T00:00:00Z","timestamp":1792540800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T00:00:00Z","timestamp":1792540800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/100013393","name":"Pacific Northwest Research Station","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100013393","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100009328","name":"Planning and Budgeting Committee of the Council for Higher Education of Israel","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100009328","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000155","name":"Division of Environmental Biology","doi-asserted-by":"publisher","award":["1210704"],"award-info":[{"award-number":["1210704"]}],"id":[{"id":"10.13039\/100000155","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100006363","name":"National Geographic Society","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100006363","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["besjournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Animal Ecology"],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    <jats:list>\n                      <jats:list-item>\n                        <jats:p>Animals influence biogeochemical processes by consuming other organisms, transferring energy from basal resources up the food chain. Energy is routed through plant, fungal and bacterial channels, and the relative importance of these pathways can shift across space and time. Variation in these pathways may be particularly pronounced in highly seasonal environments where resource availability fluctuates throughout the year.<\/jats:p>\n                      <\/jats:list-item>\n                      <jats:list-item>\n                        <jats:p>Spatiotemporal variation in the transfer of plant\u2010 versus microbial\u2010derived energy to higher trophic levels is poorly understood but can affect bottom\u2010up and top\u2010down processes. For example, seasonal shifts in herbivore versus microbivore availability (bottom\u2010up) may alter prey choice by generalist\u2010feeding predators and lead to changes in top\u2010down predator control on primary production and decomposition.<\/jats:p>\n                      <\/jats:list-item>\n                      <jats:list-item>\n                        <jats:p>\n                          We tested how spatiotemporal variation in primary production influences the use of different energy channels by a widely distributed generalist invertebrate predator in the Arctic tundra. We sampled wolf spiders across four sites spanning a productivity gradient in the Alaskan Arctic during peak summer and on a weekly basis at one focal site throughout the growing season. Using essential amino acid (EAA) carbon isotope (\u03b4\n                          <jats:sup>13<\/jats:sup>\n                          C) fingerprinting, we traced the flow of plant\u2010, bacterial\u2010 and fungal\u2010derived EAAs to spiders and quantified the use of plant\u2010 versus microbe\u2010based energy channels between sites and across summer.\n                        <\/jats:p>\n                      <\/jats:list-item>\n                      <jats:list-item>\n                        <jats:p>Wolf spiders were associated with more plant\u2010 and less fungal\u2010derived carbon assimilation when larger or collected from sites with higher normalized difference vegetation index (NDVI). Across the growing season, spiders shifted from primarily assimilating fungal\u2010based resources in early summer to plant\u2010derived resources in late summer, aligning with seasonal increases in NDVI.<\/jats:p>\n                      <\/jats:list-item>\n                      <jats:list-item>\n                        <jats:p>These patterns demonstrate spatiotemporal variation in carbon flow through different energy channels and suggest subsequent top\u2010down predator effects may also vary with basal resource availability. Our findings also suggest wolf spider body size may predict whether predation indirectly influences primary production or decomposition. As climate change alters seasonality, resource dynamics and invertebrate body sizes, these insights provide a basis for predicting spatiotemporal variation in predator impacts on ecosystem processes. Finally, our work demonstrates the utility of compound\u2010specific stable isotope analysis for integrating ecological and biogeochemical theory through the conceptual lens of zoogeochemistry.<\/jats:p>\n                      <\/jats:list-item>\n                    <\/jats:list>\n                  <\/jats:p>","DOI":"10.1111\/1365-2656.70362","type":"journal-article","created":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T04:01:41Z","timestamp":1792641701000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Carbon flow to generalist predators shifts between plant\u2010 and fungal\u2010derived resources in highly seasonal ecosystems"],"prefix":"10.1111","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4745-4304","authenticated-orcid":false,"given":"Nevo","family":"Sagi","sequence":"first","affiliation":[{"name":"Department of Integrative Biology University of Texas at Austin  Austin Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Philip J.","family":"Manlick","sequence":"additional","affiliation":[{"name":"Pacific Northwest Research Station, USDA Forest Service  Olympia Washington USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anejelique J.","family":"Martinez","sequence":"additional","affiliation":[{"name":"Biology Department University of New Mexico  Albuquerque New Mexico USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Leslie J.","family":"Potts White","sequence":"additional","affiliation":[{"name":"University of Alaska Fairbanks  Fairbanks Alaska USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4534-1242","authenticated-orcid":false,"given":"Seth D.","family":"Newsome","sequence":"additional","affiliation":[{"name":"Biology Department University of New Mexico  Albuquerque New Mexico USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Amanda M.","family":"Koltz","sequence":"additional","affiliation":[{"name":"Department of Integrative Biology University of Texas at Austin  Austin Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,10,21]]},"reference":[{"key":"e_1_2_10_2_1","doi-asserted-by":"publisher","DOI":"10.3389\/finsc.2024.1396984"},{"key":"e_1_2_10_3_1","doi-asserted-by":"publisher","DOI":"10.1017\/S0266467404001725"},{"key":"e_1_2_10_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.dendro.2021.125815"},{"key":"e_1_2_10_5_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.adk1637"},{"key":"e_1_2_10_6_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00300\u2010017\u20102139\u20107"},{"key":"e_1_2_10_7_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41559\u2010018\u20100772\u20103"},{"key":"e_1_2_10_8_1","doi-asserted-by":"publisher","DOI":"10.1890\/15\u20100427.1"},{"key":"e_1_2_10_9_1","doi-asserted-by":"publisher","DOI":"10.1111\/gcb.16121"},{"key":"e_1_2_10_10_1","doi-asserted-by":"publisher","DOI":"10.1002\/ece3.2791"},{"key":"e_1_2_10_11_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00300\u2010014\u20101622\u20107"},{"key":"e_1_2_10_12_1","doi-asserted-by":"publisher","DOI":"10.1890\/0012\u20109658(2006)87[2411:CBRINF]2.0.CO;2"},{"key":"e_1_2_10_13_1","doi-asserted-by":"publisher","DOI":"10.1029\/2025JG009048"},{"key":"e_1_2_10_14_1","doi-asserted-by":"publisher","DOI":"10.1086\/303244"},{"key":"e_1_2_10_15_1","doi-asserted-by":"publisher","DOI":"10.1111\/mec.14872"},{"key":"e_1_2_10_16_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.baae.2021.01.001"},{"key":"e_1_2_10_17_1","doi-asserted-by":"publisher","DOI":"10.1111\/1365\u20102656.12838"},{"key":"e_1_2_10_18_1","doi-asserted-by":"publisher","DOI":"10.1111\/1365\u20102656.13538"},{"key":"e_1_2_10_19_1","doi-asserted-by":"publisher","DOI":"10.1002\/ecog.08351"},{"key":"e_1_2_10_20_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1461\u20100248.2009.01360.x"},{"key":"e_1_2_10_21_1","doi-asserted-by":"publisher","DOI":"10.1111\/gcb.16767"},{"key":"e_1_2_10_22_1","doi-asserted-by":"publisher","DOI":"10.1111\/1365\u20102745.12866"},{"key":"e_1_2_10_23_1","doi-asserted-by":"publisher","DOI":"10.1111\/1365\u20102435.70130"},{"key":"e_1_2_10_24_1","first-page":"299","volume-title":"Advances in ecological research","author":"H\u00f8ye T. 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