2020
DOI: 10.1371/journal.pone.0231337
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Impact of exotic macroalga on shorebirds varies with foraging specialization and spatial scale

Abstract: Exotic species may increase or decrease native biodiversity. However, effects of exotic species are often mixed; and indirect pathways and compensatory changes can mask effects. Context-specific assessments of the indirect impacts of exotic species are also needed across multiple spatial scales. Agarophyton vermiculophyllum (previously Gracilaria vermiculophylla), an exotic, invasive macroalga, has established throughout the western hemisphere with reported positive or neutral impacts on biodiversity. Shorebir… Show more

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Cited by 11 publications
(16 citation statements)
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“…The positive effects of Agarophyton on shorebird foraging occur because some species preferentially forage for invertebrate prey directly within Agarophyton mats (Haram et al 2018, Besterman et al 2020). However, shorebird foraging traits mediate this effect, with birds using primarily visual cues and responding more poorly to macroalgal mats compared with those using tactile cues (Green et al 2015, Haram et al 2018, Besterman et al 2020.…”
Section: R Eportsmentioning
confidence: 99%
See 1 more Smart Citation
“…The positive effects of Agarophyton on shorebird foraging occur because some species preferentially forage for invertebrate prey directly within Agarophyton mats (Haram et al 2018, Besterman et al 2020). However, shorebird foraging traits mediate this effect, with birds using primarily visual cues and responding more poorly to macroalgal mats compared with those using tactile cues (Green et al 2015, Haram et al 2018, Besterman et al 2020.…”
Section: R Eportsmentioning
confidence: 99%
“…The positive effects of Agarophyton on shorebird foraging occur because some species preferentially forage for invertebrate prey directly within Agarophyton mats (Haram et al 2018, Besterman et al 2020). However, shorebird foraging traits mediate this effect, with birds using primarily visual cues and responding more poorly to macroalgal mats compared with those using tactile cues (Green et al 2015, Haram et al 2018, Besterman et al 2020. Even for tactile-foraging shorebirds the preference strength for algal mats varies by mudflat and on a spatial scale (Haram et al 2018, Besterman et al 2020, with Agarophyton abundance only weakly related to total shorebird numbers (Besterman et al 2020).…”
Section: R Eportsmentioning
confidence: 99%
“…These sand bodies are depauperate and predominantly occupied by Agarophyton vermiculophyllum (previously Gracilaria vermiculophylla)-Diopatra cuprea polychaete associations (Thomsen et al, 2009). Besterman et al (2020) have studied the value of this association in terms of biological resources for shorebirds, a major conservation concern for the region. The association is common in the Virginia coastal lagoons and provides prey resources to generalist shorebirds, but lower value resource quality for specialist foragers (Besterman et al, 2020).…”
Section: Proposed Borrow Sitesmentioning
confidence: 99%
“…Besterman et al (2020) have studied the value of this association in terms of biological resources for shorebirds, a major conservation concern for the region. The association is common in the Virginia coastal lagoons and provides prey resources to generalist shorebirds, but lower value resource quality for specialist foragers (Besterman et al, 2020). These data and analyses allowed us to identify three flood-tidal delta bodies located nearby to our project site that may be used as potential borrow sites (at locations of cores CEDV-29, −31, and −32; Figure 10).…”
Section: Proposed Borrow Sitesmentioning
confidence: 99%
“…2018, Besterman et al. 2020). The success of this species likely depended on adaptive shifts in tolerance to temperature and salinity (Hammann et al.…”
mentioning
confidence: 99%