Shell productivity of the large benthic foraminifer Baculogypsina sphaerulata, based on the population dynamics in a tropical reef environment

Fujita, Kazuhiko; Otomaru, Maki; Lopati, Paeniu; Hosono, Takashi

doi:10.1007/s00338-015-1375-y

Cited by 19 publications

(17 citation statements)

References 36 publications

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“…In contrast, two time-restricted events in June and November have been described for the porcelainous Amphisorus kudakajimaensis (Fujita et al 2000;Hohenegger 2006). Similarities are evident with the tropical eulittoral B. sphaerulata, which shows constant birth rates over the year, but without reproduction peaks (Fujita et al 2016); this seems to be characteristic for tropical in contrast to subtropical LBFs. Differences in the density histograms of reproduction onsets are caused by the nonlinear correlation between the Michaelis-Menten functions based on chamber number and test diameter (Fig.…”

Section: Discussionmentioning

confidence: 82%

“…Reproduction throughout the year also takes place in the hyaline eulittoral 'star sand' Foraminifera B. sphaerulata in tropical, equatorial regions, but without distinct reproduction peaks (Fujita et al 2016). This is different to its reproduction in the subtropical NW Pacific, where reproduction is concentrated in late spring and early summer (Sakai and Nishihira 1981;Hohenegger 2006).…”

Section: Discussionmentioning

confidence: 99%

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Growth, chamber building rate and reproduction time of Palaeonummulites venosus (Foraminifera) under natural conditions

et al. 2017

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We investigated the symbiont-bearing benthic foraminifer Palaeonummulites venosus to determine the chamber building rate (CBR), test diameter increase rate (DIR), reproduction time and longevity using the 'natural laboratory' approach. This is based on the decomposition of monthly obtained frequency distributions of chamber number and test diameter into normally distributed components. Test measurements were taken using MicroCT. The shift of the mean and standard deviation of component parameters during the 15-month investigation period was used to calculate Michaelis-Menten functions applied to estimate the averaged CBR and DIR under natural conditions. The individual dates of birth were estimated using the inverse averaged CBR and the inverse DIR fitted by the individual chamber number or the individual test diameter at the sampling date. Distributions of frequencies and densities (i.e., frequency divided by sediment weight) based on both CBR and DIR revealed continuous reproduction throughout the year with two peaks, a stronger one in June determined as the onset of the summer generation (generation 1) and a weaker one in November determined as the onset of the winter generation (generation 2). This reproduction scheme explains the presence of small and large specimens in the same sample. Longevity, calculated as the maximum difference in days between the individual's birth date and the sampling date, is approximately 1.5 yr, an estimation obtained by using both CBR and DIR.

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Section: Discussionmentioning

confidence: 82%

Section: Discussionmentioning

confidence: 99%

Growth, chamber building rate and reproduction time of Palaeonummulites venosus (Foraminifera) under natural conditions

et al. 2017

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“…The Calcarinidae are unique elements of the Indo-Pacific foraminiferal reef biotas. They are extremely abundant on reef crests in the Western Tropical Pacific, vital producers of calcium carbonate and are deposited as extensive beach sands 13 , 17 , 67 . Calcarinidae, with the exception of the small Neorotalia calcar , exhibit the most restricted distribution ranges and are known for their comparatively narrow tolerance towards lower temperatures 13 , 35 and elevated nutrient levels 68 .…”

Section: Discussionmentioning

confidence: 99%

Patterns of species richness and the center of diversity in modern Indo-Pacific larger foraminifera

Förderer

Rödder

Langer

2018

Sci Rep

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Symbiont-bearing Larger Benthic Foraminifera (LBF) are ubiquitous components of shallow tropical and subtropical environments and contribute substantially to carbonaceous reef and shelf sediments. Climate change is dramatically affecting carbonate producing organisms and threatens the diversity and structural integrity of coral reef ecosystems. Recent invertebrate and vertebrate surveys have identified the Coral Triangle as the planet’s richest center of marine life delineating the region as a top priority for conservation. We compiled and analyzed extensive occurrence records for 68 validly recognized species of LBF from the Indian and Pacific Ocean, established individual range maps and applied Minimum Convex Polygon (MCP) and Species Distribution Model (SDM) methodologies to create the first ocean-wide species richness maps. SDM output was further used for visualizing latitudinal and longitudinal diversity gradients. Our findings provide strong support for assigning the tropical Central Indo-Pacific as the world’s species-richest marine region with the Central Philippines emerging as the bullseye of LBF diversity. Sea surface temperature and nutrient content were identified as the most influential environmental constraints exerting control over the distribution of LBF. Our findings contribute to the completion of worldwide research on tropical marine biodiversity patterns and the identification of targeting centers for conservation efforts.

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“…On the one hand, porcelainous species (e.g., Peneroplis antillarum in Hohenegger, 2006; Hohenegger, Briguglio & Eder, 2014; Amphisorus hemprichii in Zohary, Reiss & Hottinger, 1980) and hyaline species (e.g., Calcarina gaudichaudi in Hohenegger, 2006 ; Baculogypsina sphaerulata in Sakai & Nishihira, 1981; Hohenegger, 2006) studied in the subtropics showed a single mass reproduction restricted to June, while porcelaneous Amphisorus kudakajimaeinsis on the other hand exhibits two events restricted to June and November (Fujita, Nishi & Saito, 2000; Hohenegger, 2006; Hohenegger, Briguglio & Eder, 2014; Zohary, Reiss & Hottinger, 1980). A third reproduction mode has been observed in tropical eulittroal B. sphaerulata , which shows constant birth rates over the year lacking major reproduction peaks (Fujita et al, 2016), which seems to be characteristic for tropical LBFs.…”

Section: Discussionmentioning

confidence: 91%

Growth estimation of the larger foraminifer Heterostegina depressa by means of population dynamics

Eder

Woeger

Kinoshita

et al. 2019

PeerJ

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In Heterostegina depressa, the flagship species of laboratory investigations of larger benthic foraminifera (LBF) since the 70’s, the timing of reproduction, longevity and natural chamber building rates are still understudied. A recently developed method, the natural laboratory (sensu Hohenegger), has been applied on H. depressa populations from Sesoko Jima, NW Okinawa, Japan. An averaged chamber building rate and longevity of H. depressa were calculated based on 17 monthly samplings at fixed stations. All samples were collected at 20 and 50 m water depths using SCUBA. Live populations were dried and investigated by microCT. The monthly frequency distributions of chamber numbers and test diameters have been decomposed in normally distributed components. For each month, mean and standard deviations of the components were used to calculate the maximum chamber number and maximum test diameter. Based on these values, the natural chamber building rate (CBR) or diameter increase rate (DIR) could be estimated using the Michaelis-Menten function. CBR and DIR were inverted to estimate the ‘birthdate’ of all investigated individuals. Based on frequencies of these ‘birthdates’, main reproduction events could be detected and compared to the reproduction timing of other subtropical and tropical LBF taxa. Furthermore, peaks in reproduction could be linked to monsoon wet seasons (=“rainy seasons”) and winter rains.

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Shell productivity of the large benthic foraminifer Baculogypsina sphaerulata, based on the population dynamics in a tropical reef environment

Cited by 19 publications

References 36 publications

Growth, chamber building rate and reproduction time of Palaeonummulites venosus (Foraminifera) under natural conditions

Growth, chamber building rate and reproduction time of Palaeonummulites venosus (Foraminifera) under natural conditions

Patterns of species richness and the center of diversity in modern Indo-Pacific larger foraminifera

Growth estimation of the larger foraminifer Heterostegina depressa by means of population dynamics

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