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Yet, water economics are grossly understudied relative to foraging and predation, leaving ecologists ill\u2010equipped to predict how the intensifying disruption of hydrological regimes worldwide will impact communities. For savanna herbivores, reliance on surface water can increase exposure to predators and competitors, and thus strategies that reduce the need to drink are advantageous. Yet, the extent to which increasing dietary water intake while decreasing water loss enables animals to forego drinking remains unknown.<\/jats:p>\n                      <\/jats:list-item>\n                      <jats:list-item>\n                        <jats:p>\n                          We studied water budgets of sympatric African savanna antelopes that differ in size, bushbuck (\n                          <jats:italic>Tragelaphus sylvaticus<\/jats:italic>\n                          , ~35\u2009kg) and kudu (\n                          <jats:italic>T. strepsiceros<\/jats:italic>\n                          , ~140\u2009kg). We hypothesized that both species compensate for seasonally declining water availability by increasing consumption of moisture\u2010rich plants and reducing faecal water loss, and that these adjustments are sufficient for small\u2010bodied\u2014but not large\u2010bodied\u2014herbivores to avoid spending more time near permanent water sources as the dry season advances. We tested our predictions using temporally explicit data on antelope movements, diets, plant traits and drinking behaviour in Gorongosa National Park, Mozambique.\n                        <\/jats:p>\n                      <\/jats:list-item>\n                      <jats:list-item>\n                        <jats:p>Water content declined between the early and late dry seasons in roughly half of plant taxa consumed by antelope. Although both species reduced faecal water loss and shifted their diets towards relatively moisture\u2010rich plants as the dry season progressed, dietary water intake still declined. Contrary to expectation, kudu reduced selection for surface water in the late dry season without adjusting total time spent drinking, whereas bushbuck increased selection for surface water.<\/jats:p>\n                      <\/jats:list-item>\n                      <jats:list-item>\n                        <jats:p>We developed a generalizable approach for parsing the importance of dietary and surface water for large herbivores. Our results underscore that variation in surface\u2010water dependence is a key organizing force in herbivore communities, that simple allometric predictions about the behavioural and ecological consequences of this variation are unreliable. Understanding wildlife water economics is a research frontier that will be essential for predicting changes in species distribution and community composition as temperatures rise and droughts intensify.<\/jats:p>\n                      <\/jats:list-item>\n                    <\/jats:list>\n                  <\/jats:p>","DOI":"10.1111\/1365-2656.70001","type":"journal-article","created":{"date-parts":[[2025,2,11]],"date-time":"2025-02-11T00:38:51Z","timestamp":1739234331000},"page":"670-681","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Water economics of African savanna herbivores: How much does plant moisture matter?"],"prefix":"10.1111","volume":"94","author":[{"given":"Jeremy A.","family":"Van Driessche","sequence":"first","affiliation":[{"name":"Department of Fish and Wildlife Sciences University of Idaho  Moscow Idaho USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0505-6620","authenticated-orcid":false,"given":"Simon","family":"Chamaill\u00e9\u2010Jammes","sequence":"additional","affiliation":[{"name":"CEFE, Universit\u00e9 de Montpellier, CNRS, EPHE, IRD  Montpellier France"},{"name":"Department of Zoology &amp; Entomology, Mammal Research Institute University of Pretoria  Pretoria South Africa"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ciara M.","family":"Nutter","sequence":"additional","affiliation":[{"name":"Department of Ecology and Evolutionary Biology Princeton University  Princeton New Jersey USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7789-6349","authenticated-orcid":false,"given":"Arjun B.","family":"Potter","sequence":"additional","affiliation":[{"name":"Department of Ecology and Evolutionary Biology Princeton University  Princeton New Jersey USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7487-5393","authenticated-orcid":false,"given":"Robert M.","family":"Pringle","sequence":"additional","affiliation":[{"name":"Department of Ecology and Evolutionary Biology Princeton University  Princeton New Jersey USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0124-7641","authenticated-orcid":false,"given":"Ryan A.","family":"Long","sequence":"additional","affiliation":[{"name":"Department of Fish and Wildlife Sciences University of Idaho  Moscow Idaho USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,2,10]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1002\/ece3.5270"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.aau3561"},{"key":"e_1_2_9_4_1","unstructured":"Audacity Team. 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