2023
DOI: 10.1002/ecs2.4531
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A unified meta‐ecosystem dynamics model: Integrating herbivore‐plant subwebs with the intermittent upwelling hypothesis

Abstract: Determining the relative influence of biotic and abiotic processes in structuring communities at local to large spatial scales is best understood using a biogeographic comparative‐experimental approach. Using this approach, previous work suggests that intertidal community dynamics (top‐down and bottom‐up effects) vary unimodally along an upwelling‐based productivity gradient, termed the Intermittent Upwelling Hypothesis (IUH). Evidence consistent with the IUH comes from the sessile invertebrate/predator (SIP) … Show more

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Cited by 2 publications
(7 citation statements)
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“…For example, grazing appeared to have the strongest effect at Raramai on the east coast, particularly on sheet algae, with the greatest effect occurring in cleared treatments. This result is consistent with the study by Menge et al (2023) in which macrophyte-herbivore interactions weakened with increasing nutrient inputs. In low-nutrient environments, strong herbivory and low macrophyte productivity occurred and vice versa in high-nutrient environments.…”
Section: Herbivorysupporting
confidence: 93%
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“…For example, grazing appeared to have the strongest effect at Raramai on the east coast, particularly on sheet algae, with the greatest effect occurring in cleared treatments. This result is consistent with the study by Menge et al (2023) in which macrophyte-herbivore interactions weakened with increasing nutrient inputs. In low-nutrient environments, strong herbivory and low macrophyte productivity occurred and vice versa in high-nutrient environments.…”
Section: Herbivorysupporting
confidence: 93%
“…We believe that future studies allowing longer succession time to further delineate interactions among organisms are warranted. However, based on trends observed in the experiments in the 5th and 6th months and long-term (~20 years) observations of high limpet density and large limpet size (Menge et al, 2023), we suggest that in uncleared plots at Raramai, grazers would have kept macroalgae sparse in +herbivore treatments, while sheet algae would likely persist in herbivore treatments, although winter storms likely would reduce their cover (Figure 6). Final trends in cleared Raramai plots suggested similar long-term grazing outcomes.…”
Section: Geophysical Differences May Underpin the Variations In Algal...mentioning
confidence: 77%
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