Resolving early Mid-Ordovician (Kundan) bioevents in the East Baltic based on brachiopods

Christian Mac Ørum Rasmussen; David Alexander Taylor Harper

doi:10.1016/j.geobios.2007.10.006

Resolving early Mid-Ordovician (Kundan) bioevents in the East Baltic based on brachiopods

Christian Mac Ørum Rasmussen, David Alexander Taylor Harper

Ecology and Evolution

11 Citations (Scopus)

Abstract

Bed-by-bed sampling of brachiopods from selected Kundan Stage localities in the East Baltic has permitted the construction of a-diversity curves, unprecedented in detail from this particular stage and region. These a-diversity curves can be correlated between the investigated sections, along an east to west transect of some 200 km and indicate bioevents associated with intervals of increased palaeo-water depth. The highest peaks in a-diversity occur when biofacies analysis and sedimentological evidence indicate drowning events. The events involve mainly taxa endemic to the Baltic province at this time and thus, the radiation proceeded by a modest expansion of the brachiopod fauna into deeper-water environments, isolated at this time from major immigrations. In addition to increased a-diversity, ß-diversity was signalled by new, deeper-water communities and the isolation of the province helped retain high values of ¿-diversity.

Original language	English
Journal	Geobios
Volume	41
Issue number	4
Pages (from-to)	533-542
ISSN	0016-6995
DOIs	https://doi.org/10.1016/j.geobios.2007.10.006
Publication status	Published - 2008

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10.1016/j.geobios.2007.10.006

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@article{022867802de411df8ed1000ea68e967b,

title = "Resolving early Mid-Ordovician (Kundan) bioevents in the East Baltic based on brachiopods",

abstract = "Bed-by-bed sampling of brachiopods from selected Kundan Stage localities in the East Baltic has permitted the construction of a-diversity curves, unprecedented in detail from this particular stage and region. These a-diversity curves can be correlated between the investigated sections, along an east to west transect of some 200 km and indicate bioevents associated with intervals of increased palaeo-water depth. The highest peaks in a-diversity occur when biofacies analysis and sedimentological evidence indicate drowning events. The events involve mainly taxa endemic to the Baltic province at this time and thus, the radiation proceeded by a modest expansion of the brachiopod fauna into deeper-water environments, isolated at this time from major immigrations. In addition to increased a-diversity, {\ss}-diversity was signalled by new, deeper-water communities and the isolation of the province helped retain high values of ¿-diversity.",

author = "Rasmussen, {Christian Mac {\O}rum} and Harper, {David Alexander Taylor}",

note = "Keywords: Kunda Stage; Brachiopods; Correlation; a-diversity; Bioevents",

year = "2008",

doi = "10.1016/j.geobios.2007.10.006",

language = "English",

volume = "41",

pages = "533--542",

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TY - JOUR

T1 - Resolving early Mid-Ordovician (Kundan) bioevents in the East Baltic based on brachiopods

AU - Rasmussen, Christian Mac Ørum

AU - Harper, David Alexander Taylor

N1 - Keywords: Kunda Stage; Brachiopods; Correlation; a-diversity; Bioevents

PY - 2008

Y1 - 2008

N2 - Bed-by-bed sampling of brachiopods from selected Kundan Stage localities in the East Baltic has permitted the construction of a-diversity curves, unprecedented in detail from this particular stage and region. These a-diversity curves can be correlated between the investigated sections, along an east to west transect of some 200 km and indicate bioevents associated with intervals of increased palaeo-water depth. The highest peaks in a-diversity occur when biofacies analysis and sedimentological evidence indicate drowning events. The events involve mainly taxa endemic to the Baltic province at this time and thus, the radiation proceeded by a modest expansion of the brachiopod fauna into deeper-water environments, isolated at this time from major immigrations. In addition to increased a-diversity, ß-diversity was signalled by new, deeper-water communities and the isolation of the province helped retain high values of ¿-diversity.

AB - Bed-by-bed sampling of brachiopods from selected Kundan Stage localities in the East Baltic has permitted the construction of a-diversity curves, unprecedented in detail from this particular stage and region. These a-diversity curves can be correlated between the investigated sections, along an east to west transect of some 200 km and indicate bioevents associated with intervals of increased palaeo-water depth. The highest peaks in a-diversity occur when biofacies analysis and sedimentological evidence indicate drowning events. The events involve mainly taxa endemic to the Baltic province at this time and thus, the radiation proceeded by a modest expansion of the brachiopod fauna into deeper-water environments, isolated at this time from major immigrations. In addition to increased a-diversity, ß-diversity was signalled by new, deeper-water communities and the isolation of the province helped retain high values of ¿-diversity.

U2 - 10.1016/j.geobios.2007.10.006

DO - 10.1016/j.geobios.2007.10.006

M3 - Journal article

SN - 0016-6995

VL - 41

SP - 533

EP - 542

JO - Geobios

JF - Geobios

IS - 4

ER -

Resolving early Mid-Ordovician (Kundan) bioevents in the East Baltic based on brachiopods

Abstract

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