Difference between revisions of "RECENT PUBLICATIONS ON FORAMINIFERA"
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| + | ==ALTERNATIVE HYPOTHESES TO EXPLAIN THE EXTINCTION DURING THE MID-PLEISTOCENE CLIMATE TRANSITION== | ||
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| + | [[Image:Marine_Micropaleontology_Front.gif |left|80px|]]<font size="2"> | ||
| + | Over 100 cosmopolitan species of deep-sea benthic foraminifera (Extinction Group, Ext. Gp) became extinct during the late Pliocene-middle Pleistocene (3.6-0.55 Ma). Most had elongate, cylindrical tests and terminal apertures with complex modifications. This study provides new hypotheses on the functions of the morphologies that characterised the Ext. Gp and how these features could have been associated with their demise. From our functional morphological analysis we infer that: i) their elongate cylindrical or flabelliform tests, combined with fine perforations and a complex terminal apertural face are indicative of infaunal k-strategists with a low rate of metabolism; ii) their complex apertural faces may also have been an adaptation for gathering or processing their specific phytodetrital food. ...... </br> | ||
| + | '''Highlights''' | ||
| + | • Functional interpretation of the morphology of deep-sea foraminifera that became extinct during the MPT (Ext. Gp) suggests they had low rates of metabolism. | ||
| + | • Lowered ''p''CO<sub>2</sub> during increasingly severe glacials of the mid-Pleistocene Climate Transition resulted in the decline and loss of many reticulofenestrid nannofossils and increased seasonality of phytoplankton blooms. | ||
| + | • Ext. Gp species may have been out-competed by opportunistic benthic foraminifera that took advantage of the increased seasonality of phytodetrital flux to the deep-sea floor. | ||
| + | • Lowered ''p''CO<sub>2</sub> could have caused the loss of the particular phytoplankton group that was the detrital food of the Ext. Gp. | ||
| + | <font size="2">([http://www.sciencedirect.com/science/article/pii/S0377839813001060# ABSTRACT]) | ||
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| + | ----Mancin, N., Hayward, B.W., Trattenero, I., Cobianchi, M., Lupi, C., in press. [http://www.sciencedirect.com/science/article/pii/S0377839813001060# Can the morphology of deep-sea benthic foraminifera reveal what caused their extinction during the mid-Pleistocene Climate Transition?]. Marine Micropaleontology, http://dx.doi.org/10.1016/j.marmicro.2013.09.004 | ||
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==AGGLUTINATED FORAMINIFERA ACROSS THE INDIAN MARGIN OMZ (ARABIAN SEA)== | ==AGGLUTINATED FORAMINIFERA ACROSS THE INDIAN MARGIN OMZ (ARABIAN SEA)== | ||
