Stable isotope profiles of skeletal carbonate validate annually-produced growth checks In the bryozoan M e licerita chathamensis from Snares Platform, New Zealand.
Saved in:
| Title: | Stable isotope profiles of skeletal carbonate validate annually-produced growth checks In the bryozoan M e licerita chathamensis from Snares Platform, New Zealand. |
|---|---|
| Authors: | Key Jr, Marcus M.1, Rossi, Rebecca K.2, Smith, Abigail M.3, Hageman, Steven J.4, Patterson, William P.5 |
| Source: | Bulletin of Marine Science. Oct2018, Vol. 94 Issue 4, p1447-1464. 18p. |
| Subjects: | Bryozoa, Stable isotopes, El Niño, Ocean temperature, Oxygen isotopes |
| Abstract: | The bryozoan Melicerita chathamensis Uttley and Bullivant, 1972 produces colonies that exhibit visible growth segments defined by narrow growth checks. If these growth checks are annual, then colony age, and seawater variations among seasons and years can be quantified. The purpose of the present study was to use stable isotope profiling to evaluate whether the segments between growth checks represent annual temperature cycles in this species. We applied three independent methods to determine colony age of six colonies from 168 m depth on the Snares Platform located south of New Zealand. First, each colony was X-rayed to determine the location of the growth checks based on skeletal density. Second, branch width was measured for each zooid generation along the growth axis to locate the growth checks. Third, we measured stable C and O isotope values along the colony axis. Branch width patterns corresponded broadly with X-ray patterns, suggesting colony ages of 1.5-7.5 yrs (mean: 4.0 yrs). δ18O profiles suggested colony ages of 4.0-6.5 yrs (mean: 5.3 yrs). This species does precipitate its skeleton in isotopic equilibrium with seawater, such that annual growth checks correlate with cooler winter temperatures. A conceptual model is proposed for the annual growth cycle in this species. In the most complete colony, the 5lsO-derived temperatures correlated with inter-annual variations related to the El Nino-Southern Oscillation Index. [ABSTRACT FROM AUTHOR] |
| Copyright of Bulletin of Marine Science is the property of Rosenstiel School of Marine & Atmospheric Science 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: | Engineering Source |
| FullText | Text: Availability: 0 |
|---|---|
| Header | DbId: egs DbLabel: Engineering Source An: 132545313 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: Stable isotope profiles of skeletal carbonate validate annually-produced growth checks In the bryozoan M e licerita chathamensis from Snares Platform, New Zealand. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Key+Jr%2C+Marcus+M%2E%22">Key Jr, Marcus M.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Rossi%2C+Rebecca+K%2E%22">Rossi, Rebecca K.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Smith%2C+Abigail+M%2E%22">Smith, Abigail M.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Hageman%2C+Steven+J%2E%22">Hageman, Steven J.</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Patterson%2C+William+P%2E%22">Patterson, William P.</searchLink><relatesTo>5</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Bulletin+of+Marine+Science%22">Bulletin of Marine Science</searchLink>. Oct2018, Vol. 94 Issue 4, p1447-1464. 18p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Bryozoa%22">Bryozoa</searchLink><br /><searchLink fieldCode="DE" term="%22Stable+isotopes%22">Stable isotopes</searchLink><br /><searchLink fieldCode="DE" term="%22El+Niño%22">El Niño</searchLink><br /><searchLink fieldCode="DE" term="%22Ocean+temperature%22">Ocean temperature</searchLink><br /><searchLink fieldCode="DE" term="%22Oxygen+isotopes%22">Oxygen isotopes</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The bryozoan Melicerita chathamensis Uttley and Bullivant, 1972 produces colonies that exhibit visible growth segments defined by narrow growth checks. If these growth checks are annual, then colony age, and seawater variations among seasons and years can be quantified. The purpose of the present study was to use stable isotope profiling to evaluate whether the segments between growth checks represent annual temperature cycles in this species. We applied three independent methods to determine colony age of six colonies from 168 m depth on the Snares Platform located south of New Zealand. First, each colony was X-rayed to determine the location of the growth checks based on skeletal density. Second, branch width was measured for each zooid generation along the growth axis to locate the growth checks. Third, we measured stable C and O isotope values along the colony axis. Branch width patterns corresponded broadly with X-ray patterns, suggesting colony ages of 1.5-7.5 yrs (mean: 4.0 yrs). δ18O profiles suggested colony ages of 4.0-6.5 yrs (mean: 5.3 yrs). This species does precipitate its skeleton in isotopic equilibrium with seawater, such that annual growth checks correlate with cooler winter temperatures. A conceptual model is proposed for the annual growth cycle in this species. In the most complete colony, the 5lsO-derived temperatures correlated with inter-annual variations related to the El Nino-Southern Oscillation Index. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Bulletin of Marine Science is the property of Rosenstiel School of Marine & Atmospheric Science 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.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=132545313 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.5343/bms.2017.1166 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 18 StartPage: 1447 Subjects: – SubjectFull: Bryozoa Type: general – SubjectFull: Stable isotopes Type: general – SubjectFull: El Niño Type: general – SubjectFull: Ocean temperature Type: general – SubjectFull: Oxygen isotopes Type: general Titles: – TitleFull: Stable isotope profiles of skeletal carbonate validate annually-produced growth checks In the bryozoan M e licerita chathamensis from Snares Platform, New Zealand. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Key Jr, Marcus M. – PersonEntity: Name: NameFull: Rossi, Rebecca K. – PersonEntity: Name: NameFull: Smith, Abigail M. – PersonEntity: Name: NameFull: Hageman, Steven J. – PersonEntity: Name: NameFull: Patterson, William P. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: Oct2018 Type: published Y: 2018 Identifiers: – Type: issn-print Value: 00074977 Numbering: – Type: volume Value: 94 – Type: issue Value: 4 Titles: – TitleFull: Bulletin of Marine Science Type: main |
| ResultId | 1 |
