Academic Journal
Cladoceran assemblage changes reveal long-term ecosystem responses to anthropogenically driven seabird declines.
| Title: | Cladoceran assemblage changes reveal long-term ecosystem responses to anthropogenically driven seabird declines. |
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| Authors: | Kane, Zoe A., Duda, Matthew P., Smol, John P. |
| Source: | Hydrobiologia; Jul2026, Vol. 853 Issue 12, p3565-3582, 18p |
| Subject Terms: | Cladocera, Paleolimnology, Ecosystem dynamics, Aquatic ecology, Colonial birds, Eutrophication, Sediment sampling |
| Abstract: | While seabirds spend most of their lives in marine environments, their ecological roles extend from ocean ecosystems to terrestrial breeding sites. Here, we used subfossil cladoceran assemblages in dated sediment cores (spanning ~ 5800 years) to track the inland aquatic impacts corresponding to changing inputs from the world's third-largest known Leach's Storm-Petrel (Hydrobates leucorhous) colony on Grand Colombier Island (St. Pierre and Miquelon, France), which was disrupted by European settlement in the early 1800s. Using a comparative paleolimnological approach with data from the world's largest storm-petrel colony, our sediment records tracked long-term seabird colony trends, revealing that increased avian biovector activity supported rises in small pelagic cladocerans (mainly Bosmina spp.), likely resulting from increased nutrient loading and associated pond habitat changes. After the seabird colony declined in the early 1800s, pelagic cladocerans decreased, while littoral taxa increased, likely from changing nutrient dynamics that promoted macrophyte growth, causing a shift toward greater abundance of littoral taxa. Changes in cladoceran assemblages were correlated with shifts in seabird-related proxies, such as diatom communities, δ15N, and δ13C isotope measurements. Overall, we conclude that seabird inputs alter habitat structure, nutrient regimes, food availability, pH, and aquatic calcium levels, collectively driving substantial shifts in the aquatic ecosystem. [ABSTRACT FROM AUTHOR] |
| Copyright of Hydrobiologia is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Complementary Index |
| FullText | Links: – Type: other Text: Availability: 0 CustomLinks: – Url: https://dx.doi.org/doi:10.1007/s10750-026-06166-3 Name: EDS - Springer Nature Journals (s7799221) Category: fullText Text: View record at Springer |
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| Header | DbId: edb DbLabel: Complementary Index An: 194092220 RelevancyScore: 1082 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 1082.42224121094 |
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| Items | – Name: Title Label: Title Group: Ti Data: Cladoceran assemblage changes reveal long-term ecosystem responses to anthropogenically driven seabird declines. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Kane%2C+Zoe+A%2E%22">Kane, Zoe A.</searchLink><br /><searchLink fieldCode="AR" term="%22Duda%2C+Matthew+P%2E%22">Duda, Matthew P.</searchLink><br /><searchLink fieldCode="AR" term="%22Smol%2C+John+P%2E%22">Smol, John P.</searchLink> – Name: TitleSource Label: Source Group: Src Data: Hydrobiologia; Jul2026, Vol. 853 Issue 12, p3565-3582, 18p – Name: Subject Label: Subject Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Cladocera%22">Cladocera</searchLink><br /><searchLink fieldCode="DE" term="%22Paleolimnology%22">Paleolimnology</searchLink><br /><searchLink fieldCode="DE" term="%22Ecosystem+dynamics%22">Ecosystem dynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Aquatic+ecology%22">Aquatic ecology</searchLink><br /><searchLink fieldCode="DE" term="%22Colonial+birds%22">Colonial birds</searchLink><br /><searchLink fieldCode="DE" term="%22Eutrophication%22">Eutrophication</searchLink><br /><searchLink fieldCode="DE" term="%22Sediment+sampling%22">Sediment sampling</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: While seabirds spend most of their lives in marine environments, their ecological roles extend from ocean ecosystems to terrestrial breeding sites. Here, we used subfossil cladoceran assemblages in dated sediment cores (spanning ~ 5800 years) to track the inland aquatic impacts corresponding to changing inputs from the world's third-largest known Leach's Storm-Petrel (Hydrobates leucorhous) colony on Grand Colombier Island (St. Pierre and Miquelon, France), which was disrupted by European settlement in the early 1800s. Using a comparative paleolimnological approach with data from the world's largest storm-petrel colony, our sediment records tracked long-term seabird colony trends, revealing that increased avian biovector activity supported rises in small pelagic cladocerans (mainly Bosmina spp.), likely resulting from increased nutrient loading and associated pond habitat changes. After the seabird colony declined in the early 1800s, pelagic cladocerans decreased, while littoral taxa increased, likely from changing nutrient dynamics that promoted macrophyte growth, causing a shift toward greater abundance of littoral taxa. Changes in cladoceran assemblages were correlated with shifts in seabird-related proxies, such as diatom communities, δ<superscript>15</superscript>N, and δ<superscript>13</superscript>C isotope measurements. Overall, we conclude that seabird inputs alter habitat structure, nutrient regimes, food availability, pH, and aquatic calcium levels, collectively driving substantial shifts in the aquatic ecosystem. [ABSTRACT FROM AUTHOR] – Name: Abstract Label: Group: Ab Data: <i>Copyright of Hydrobiologia is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s10750-026-06166-3 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 18 StartPage: 3565 Subjects: – SubjectFull: Cladocera Type: general – SubjectFull: Paleolimnology Type: general – SubjectFull: Ecosystem dynamics Type: general – SubjectFull: Aquatic ecology Type: general – SubjectFull: Colonial birds Type: general – SubjectFull: Eutrophication Type: general – SubjectFull: Sediment sampling Type: general Titles: – TitleFull: Cladoceran assemblage changes reveal long-term ecosystem responses to anthropogenically driven seabird declines. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Kane, Zoe A. – PersonEntity: Name: NameFull: Duda, Matthew P. – PersonEntity: Name: NameFull: Smol, John P. IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 07 Text: Jul2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 00188158 Numbering: – Type: volume Value: 853 – Type: issue Value: 12 Titles: – TitleFull: Hydrobiologia Type: main |
| ResultId | 1 |