Composition and diversity patterns of deep sea benthic foraminifera from the Panama basin, eastern equatorial Pacific

Patarroyo, Germán D.; Martínez, José I.

doi:10.1016/j.dsr.2021.103470

Cited by 8 publications

(3 citation statements)

References 78 publications

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“…One aspect is currently known: foraminifera can use sponges as a habitat and as a food source. Besides, it is known, that for example currents can influence foraminiferal assemblages (Patarroyo and Martinez, 2013;Debenay et al, 2005) and further investigations are needed to clarify their potential impact on the diversity and abundance of foraminifera on sponges.…”

Section: Discussionmentioning

confidence: 99%

Diversity and abundances of foraminifera in living sponges of the Norwegian-Greenland Sea

Lintner

Wollenburg

et al. 2022

Journal of Sea Research

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Section: Discussionmentioning

confidence: 99%

Diversity and abundances of foraminifera in living sponges of the Norwegian-Greenland Sea

Lintner

Wollenburg

et al. 2022

Journal of Sea Research

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“…We defined morphotypes based on overall test shape and general chamber arrangement to focus analysis on the ecological structure of foraminiferal communities; although genera are often differentiated by characteristics including aperture types, wall structure, and ornamentation features, test shapes are closely related to the sedimentary environment the foraminifer occupies (Bernhard 1986; Corliss and Chen 1988; Murray et al 2011; Table 1). We used morphotype definitions from Patarroyo and Martinez (2021), Koutsoukos and Hart (1990), and Corliss and Chen (1988) to create a list of consensus morphotypes: branching, spherical, milioline, concave-convex, discoidal, plano-convex, biconvex, flat-tapered, cylindrical-tubular, and cylindrical-tapered (Table 1); and we assigned genera to morphotypes based on plates from Eicher and Worstell (1970) and Tappan and Loeblich (1988). We chose not to differentiate between agglutinated taxa and calcareous taxa, although they are often assigned separate morphotypes (e.g., Reolid et al 2008), to avoid the influence of taphonomic biases (i.e., dissolution of calcareous specimens and breakage of agglutinated specimens), which can affect the ratio of agglutinated to calcareous benthic foraminifera.…”

Section: Methodsmentioning

confidence: 99%

Spatial heterogeneity in benthic foraminiferal assemblages tracks regional impacts of paleoenvironmental change across Cretaceous OAE2

Bryant

Belanger²

2023

Paleobiology

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The impact of global climate events on local ecosystems can vary spatially. Understanding this potential heterogeneity can illuminate which environments will be most impacted and the proximal drivers of ecosystem responses. Cenomanian–Turonian marine deposits of the Western Interior Seaway (WIS) record paleoceanographic changes associated with the Greenhorn transgression and the onset of Oceanic Anoxic Event 2 (OAE2). They provide an ideal setting to study basin-wide paleoecological responses during a global perturbation. Here, we integrate benthic foraminiferal assemblages from before, during, and after OAE2 via multivariate ordination analysis to examine spatial patterns in faunal responses across the western United States on a common scale and to interrogate a previously defined faunal marker commonly used for basin-wide correlation, the Benthonic Zone (BZ). We identify oxygenation and organic matter quality as primary and secondary controls of faunal variation across the 10 stratigraphic records and use this variation to infer paleoenvironmental changes. Stratigraphic trends reveal, in contrast to previous studies, deoxygenation at the onset of OAE2. They also reveal temporal patterns in oxygenation and productivity consistent with the gradual northward migration of a southern water mass into the WIS. This spatial heterogeneity hinders the use of the BZ as a temporal marker, because assemblages change in response to diachronous environmental change, and thus timing of the BZ with respect to OAE2 is not consistent across the basin. Our study demonstrates that regional processes can overshadow ecosystem responses to global events and underscores the importance of considering how changes in the position of water masses impact the expression of global biogeochemical perturbations.

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“…Concerning the Eastern Equatorial Pacific (EEP) OMZ, cores JPC 9, KAMA 8, KAMA 12 and KAMA 14 were retrieved during the research expeditions AMADEUS, ME0005A, KNR 176-2, Y71-3, Y69-71, and PLDSII (Patarroyo and Martinez, 2021).…”

Section: Methodsmentioning

confidence: 99%

Eubuliminella tenuata as a new proxy for quantifying past bottom water oxygenation

Tetard

Ovsepyan

Licari

2021

Marine Micropaleontology

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Composition and diversity patterns of deep sea benthic foraminifera from the Panama basin, eastern equatorial Pacific

Cited by 8 publications

References 78 publications

Diversity and abundances of foraminifera in living sponges of the Norwegian-Greenland Sea

Diversity and abundances of foraminifera in living sponges of the Norwegian-Greenland Sea

Spatial heterogeneity in benthic foraminiferal assemblages tracks regional impacts of paleoenvironmental change across Cretaceous OAE2

Eubuliminella tenuata as a new proxy for quantifying past bottom water oxygenation

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