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Herbivore effects increase with latitude across the extent of a foundational seagrass
Campbell, Justin E.; Kennedy Rhoades, O.; Munson, Calvin J.; Altieri, Andrew H.; Douglass, James G.; Heck, Kenneth L.; Paul, Valerie J.; Armitage, Anna R.; Barry, Savanna C.; Bethel, Enrique; Christ, Lindsey; Christianen, Marjolijn J. A.; Dodillet, Grace; Dutton, Katrina; Fourqurean, James W.; Frazer, Thomas K.; Gaffey, Bethany M.; Glazner, Rachael; Goeke, Janelle A.; Grana-Valdes, Rancel; Jenkins, Victoria J.; Kramer, Olivier A. A.; Linhardt, Samantha T.; Martin, Charles W.; Martinez Lopez, Isis G.; McDonald, Ashley M.; Main, Vivienne A.; Manuel, Sarah A.; Marco-Méndez, Candela; O’Brien, Duncan A.; O’Shea, Owen R.; Patrick, Christopher J.; Peabody, Clare; Reynolds, Laura K.; Rodriguez, Alex; Rodriguez Bravo, Lucia M.; Sang, Amanda; Sawall, Yvonne; Smith, Khalil; Smulders, Fee O. H.; Sun, Uriah; Thompson, Jamie E.; van Tussenbroek, Brigitta; Wied, William L. (2024). Herbivore effects increase with latitude across the extent of a foundational seagrass. Nature Ecology & Evolution 8(4): 663-675. https://dx.doi.org/10.1038/s41559-024-02336-5
In: Nature Ecology & Evolution. Springer Nature. ISSN 2397-334X
Is gerelateerd aan:
Longo, G.O. (2024). Seagrass vulnerability to tropicalization-induced herbivory. Nature Ecology & Evolution 8(4): 600-601. https://dx.doi.org/10.1038/s41559-024-02345-4, meer
Peer reviewed article  
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    Marien/Kust
Abstract
    Climate change is altering the functioning of foundational ecosystems. While the direct effects of warming are expected to influence individual species, the indirect effects of warming on species interactions remain poorly understood. In marine systems, as tropical herbivores undergo poleward range expansion, they may change food web structure and alter the functioning of key habitats. While this process (‘tropicalization’) has been documented within declining kelp forests, we have a limited understanding of how this process might unfold across other systems. Here we use a network of sites spanning 23° of latitude to explore the effects of increased herbivory (simulated via leaf clipping) on the structure of a foundational marine plant (turtlegrass). By working across its geographic range, we also show how gradients in light, temperature and nutrients modified plant responses. We found that turtlegrass near its northern boundary was increasingly affected (reduced productivity) by herbivory and that this response was driven by latitudinal gradients in light (low insolation at high latitudes). By contrast, low-latitude meadows tolerated herbivory due to high insolation which enhanced plant carbohydrates. We show that as herbivores undergo range expansion, turtlegrass meadows at their northern limit display reduced resilience and may be under threat of ecological collapse.
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