00607nas a2200181 4500008004500000245008700045210006900132100002100201700001700222700001700239700002200256700001900278700001800297700002100315700002300336700002300359856004300382 In Press eng d 00aDating Borneo’s Deltaic Deluge: Middle Miocene progradation of the Mahakam Delta0 aDating Borneo s Deltaic Deluge Middle Miocene progradation of th1 aMarshall, Nathan1 aNovak, Vibor1 aCibaj, Irfan1 aKrijgsman, Wouter1 aRenema, Willem1 aYoung, Jeremy1 aFraser, Nicholas1 aLimbong, Alexander1 aMorley, Robert, J. uhttps://ipaeg.myspecies.info/node/207502693nas a2200157 4500008004000000245009300040210006900133260002000202520217200222100002402394700002002418700001702438700001802455700001902473856004302492 0 engd00aMicrobial carbonates in Miocene reefs in the Mahakam Delta in East Kalimantan, Indonesia0 aMicrobial carbonates in Miocene reefs in the Mahakam Delta in Ea aBerlin, Germany3 a
Coral patch reefs in the Miocene Mahakam Delta in East Kalimantan (Borneo, Indonesia) grew in shallow marine turbid waters. These patch reefs developed from delta front to deeper (prodelta) settings in areas with temporary reduced siliciclastic input. Langhian reef deposits are well exposed in limestone quarries in the Samarinda area and locally include microbial carbonates. Two different types of microbial carbonates have been found around Samarinda in two localities 2 km apart. These sections were logged in detail and 208 samples were collected. Meso and macrostructure of microbialites were identified at the outcrops. Thin sections from carbonate samples were examined under optical microscope and microfacies were classified using the Dunham (1962) and Insalaco (1998) terms. The carbonate content was analyzed using Total Inorganic Carbon analysis, with 12% carbon as a standard for carbon calibration. In the northern section, microbialites occur as low-relief domes, up to 2 m wide and 0.5 m high, with internal lamination, developed around large coral fragments at the transition from reef deposits to fine-grained siliciclastics.
The second type of microbialites has been found in the southern locality as decimeter-scale nodules ("megaoncoids") formed around nuclei of large coral fragments. Small nodules were bound together into bigger nodules. Microbial micrite with laminated to digitated fabrics intergrew with coralline algae to form the thick covers of these "megaoncoids", which laterally change into coral boundstones. In both sections microbialites are not components of the reef framework. They grew around large coral fragments on the flanks of the patch reefs. The microbialites that form low relief domes developed on nearly flat, stable seafloor seawards of the patch reef. The "megaoncoids" in the southern section formed as a result of downslope movement of coral fragments coated by microbialite/coralline algal crust. The steep slope at the flank of the patch reef favored falling and overturning of encrusted corals and continued growth of microbial crusts on other sides of nodules.
Seagrass ecosystems play an important role in sedimentation processes and nutrient cycling and support local biodiversity by providing food and shelter for numerous associated organisms. These ecosystems have been around since the Late Cretaceous. In order to understand their emergence in geological time and their response to past perturbations we have to be able to recognize seagrass communities in the fossil record. However, seagrass itself hardly fossilizes and therefore we are searching for indirect indicators to recognize ancient seagrass vegetation. In this contribution we review molluscan evidence for palaeo-seagrass settings. Indicator species are rare since the majority of seagrass associated molluscs occurs in other marine habitats as well. Furthermore, those habitats appear to be patchy, both spatial and temporal, resulting in mixed occurrences of seagrass and non-seagrass faunas. Often only the high abundance of certain mollusc groups and the general taxonomic composition of a fauna points to seagrass environments. However, the distribution of gastropod trophic guilds in species richness versus abundance data appears to yield patterns that may be very characteristic for the identification of fossil seagrass associated faunas. We are currently applying Indirect PaleoSeagrass Indicators (IPSI’s) to a number of fossil and modern shelly samples, both from seagrass and non-seagrass environments. We also briefly review potential sedimentary and geochemical IPSI’s as well as fossil groups different than molluscs. Identifying seagrass environments enables us to assess diversity trends in such ecosystems through time and to study their response over time intervals with major environmental and climate change.
1 aReich, Sonja1 aWesselingh, Frank, P.1 aRenema, Willem uhttps://ipaeg.myspecies.info/node/205900504nas a2200133 4500008004100000245013700041210006900178300001000247490000800257100001700265700002600282700001900308856004300327 2014 eng d00aA highly diverse molluscan seagrass fauna from the early Burdigalian (early Miocene) of Banyunganti (south-central Java, Indonesia)0 ahighly diverse molluscan seagrass fauna from the early Burdigali a5-1260 v1161 aReich, Sonja1 aWesselingh, Frank, P.1 aRenema, Willem uhttps://ipaeg.myspecies.info/node/205800445nas a2200133 4500008004600000245005800046210005400104100001700158700002500175700002600200700002300226700001900249856004300268 Submitted eng d 00aIndirect paleo- seagrass indicators (IPSIs): a review0 aIndirect paleo seagrass indicators IPSIs a review1 aReich, Sonja1 aDi Martino, Emanuela1 aWesselingh, Frank, P.1 aTodd, Jonathan, A.1 aRenema, Willem uhttps://ipaeg.myspecies.info/node/205700575nas a2200157 4500008004600000245010200046210006900148100001900217700001700236700002600253700002800279700002500307700002300332700001900355856004300374 Submitted eng d 00aDiversity and paleoecology of Miocene coral-associated mollusks from East Kalimantan (Indonesia)0 aDiversity and paleoecology of Miocene coralassociated mollusks f1 aKusworo, Aires1 aReich, Sonja1 aWesselingh, Frank, P.1 aSantodomingo, Nadiezhda1 aJohnson, Kenneth, G.1 aTodd, Jonathan, A.1 aRenema, Willem uhttps://ipaeg.myspecies.info/node/205600367nas a2200097 4500008004000000245008100040210006900121100001700190700001900207856004300226 0 engd00aDistribution of larger foraminifera in mixed carbonate-siliciclastic systems0 aDistribution of larger foraminifera in mixed carbonatesiliciclas1 aNovak, Vibor1 aRenema, Willem uhttps://ipaeg.myspecies.info/node/205500348nas a2200085 4500008004000000245009300040210006900133100001700202856004300219 0 engd00aEarly Miocene larger foraminifera assemblage of the Taballar Limestone (East Kalimantan)0 aEarly Miocene larger foraminifera assemblage of the Taballar Lim1 aNovak, Vibor uhttps://ipaeg.myspecies.info/node/205400396nas a2200097 4500008004500000245010500045210006900150100001700219700001900236856004300255 In Press eng d 00aLarger foraminifera as environmental discriminators in Miocene mixed carbonate-siliciclastic systems0 aLarger foraminifera as environmental discriminators in Miocene m1 aNovak, Vibor1 aRenema, Willem uhttps://ipaeg.myspecies.info/node/205300416nas a2200121 4500008004600000245006500046210006500111100001900176700001800195700002100213700001700234856004300251 Submitted eng d 00aAge of Neogene fossil localities in the Northern Kutei Basin0 aAge of Neogene fossil localities in the Northern Kutei Basin1 aRenema, Willem1 aWarter, Viola1 aMarshall, Nathan1 aNovak, Vibor uhttps://ipaeg.myspecies.info/node/204400530nas a2200145 4500008004500000245011400045210006900159100001700228700001800245700002600263700001400289700001900303700001900322856004300341 In Press eng d 00aPaleoecological significance of stable isotope ratios in Miocene tropical shallow marine habitats (Indonesia)0 aPaleoecological significance of stable isotope ratios in Miocene1 aReich, Sonja1 aWarter, Viola1 aWesselingh, Frank, P.1 aZwaan, H.1 aRenema, Willem1 aLourens, Lucas uhttps://ipaeg.myspecies.info/node/204300539nas a2200133 4500008004500000245014000045210006900185100001800254700002200272700002600294700002300320700001900343856004300362 In Press eng d 00aLate Miocene seasonal to sub-decadal climate variability in the Indo-West Pacific (East Kalimantan, Indonesia) preserved in giant clams0 aLate Miocene seasonal to subdecadal climate variability in the I1 aWarter, Viola1 aMüller, Wolfgang1 aWesselingh, Frank, P.1 aTodd, Jonathon, A.1 aRenema, Willem uhttps://ipaeg.myspecies.info/node/204201609nas a2200133 4500008004000000245007500040210006900115520116200184100001801346700002501364700001901389700002401408856004301432 0 engd00aEvolutionary history of the reef building coralline algae (Rhodophyta)0 aEvolutionary history of the reef building coralline algae Rhodop3 aMastophoroids in the sense of Harvey et al. (2003) are the main components of shallow coral reef environments. Their status as a monophyletic subfamily is lost, but different subsequent proposals about the taxonomic relationships of their genera were declared to be untenable. Here we present a new, more complete phylogeny of Mastophoroideae sensu Harvey et al. (2003) with a temporal dimension reflecting the evolutionary history of this clade which is very important in ecological and structural means in coral reefs. We agree with Kato et al. (2011) to maintain the Lithophylloideae, Corallinoideae and Metagoniolithoideae, to reduce the Mastophoroideae and to establish the new subfamilies Hydrolithoideae, Neogoniolithoideae and Porolithoideae. We propose two new genera Adeylithon gen. nov. with the type species A. conicum and Harveylithon gen. nov. with the type species H. rupestre. The calibration of the molecular clock of the genetic marker SSU supposes a Cenozoic origin of most of the clades of the former mastophoroids sensu Harvey et al. (2003) and a separation from Hapalidiaceae in the boundary between early and late Cretaceous.
1 aRösler, Anja1 aPerfectti, Francisco1 aPeña, Viviana1 aBraga, Juan, Carlos uhttps://ipaeg.myspecies.info/node/204102123nas a2200145 4500008004500000245007800045210006900123520164400192100001801836700002401854700001701878700001901895700002001914856004301934 In Press eng d 00aCoralline Algae from the Miocene Mahakam Delta (East Kalimantan, SE Asia)0 aCoralline Algae from the Miocene Mahakam Delta East Kalimantan S3 aMiocene crustose coralline algae (CCA) from the South East Asia are poorly known, although the Miocene is the epoch of the onset of the biodiversity hotspot in the region and CCA are crucial to understand the evolutionary history of reef building. To fill this knowledge gap, CCA from Lower and Middle Miocene reefs and related carbonates in the Kutai Basin in East Kalimantan (Borneo, Indonesia) have been studied. The Kutai Basin was dominated by siliciclastic sediments of the Proto-Mahakam delta and only locally carbonate buildups occur laterally to or within the deltaic succession. CCA in the Kutai Basin occur in low-energy shallow-water platform carbonates and in association with coral reefs, encrusting the corals or bioclasts. Two main CCA assemblages have been recognized: 1) A shallow-water assemblage (S-assemblage), dominated by Neogoniolithon spp., thick crusts of Spongites spp., and Hydrolithon spp.; and 2) the D-assemblage, mainly consisting of thin crusts of Lithothamnion spp., Mesophyllum spp., and Sporolithon spp., which grew in darker waters. Light reduction in reefs in the Proto-Mahakam delta was due to increased water depth or higher turbidity by higher siliciclastic input. Assemblages with intermediate composition (I-assemblages) can also be found. Common CCA with large cells fusions and groups of heterocysts, typical features of modern reef CCA, in the S-assemblages in the Middle Miocene of East Kalimantan reflect the initiation of the reef-building CCA flora in the Indo-Pacific region. The occurrence of this kind of CCA confirms the biogeographic differentiation of a tropical reef flora.
1 aRösler, Anja1 aPretković, Vedrana1 aNovak, Vibor1 aRenema, Willem1 aBraga, Juan, C. uhttps://ipaeg.myspecies.info/node/204000581nas a2200133 4500008004100000245012000041210006900161300000900230490000700239100002600246700002100272700002000293856013400313 2013 eng d00aChanges in the Indonesian Throughflow and southeast Asian hydroclimate during the Middle-Miocene Climate Transition0 aChanges in the Indonesian Throughflow and southeast Asian hydroc a91230 v151 aBoix, Amanda, Frigola1 aPrange, Matthias1 aSchulz, Michael uhttps://ipaeg.myspecies.info/content/changes-indonesian-throughflow-and-southeast-asian-hydroclimate-during-middle-miocene-climat00467nas a2200109 4500008004100000245009100041210006900132300001200201490000700213100001700220856012000237 2012 eng d00aPolystira to Pan-Tropica: developing strategies for analysing molluscan hyperdiversity0 aPolystira to PanTropica developing strategies for analysing moll a624-6250 v441 aTodd, J., A. uhttps://ipaeg.myspecies.info/content/polystira-pan-tropica-developing-strategies-analysing-molluscan-hyperdiversity00532nas a2200145 4500008004100000245008600041210006900127260003500196300000800231490000700239100002500246700002800271700002100299856006600320 2012 eng d00aAsynchronous response of coral reefs to Late Cenozoic global environmental change0 aAsynchronous response of coral reefs to Late Cenozoic global env aCharlotte, North Carolina, USA a6230 v441 aJohnson, Kenneth, G.1 aSantodomingo, Nadiezhda1 aRosen, Brian, R. uhttps://gsa.confex.com/gsa/2012AM/webprogram/Paper208384.html00923nas a2200289 4500008004100000245008400041210006900125260003500194300000800229490000700237653001400244653002400258653001200282653003800294653001600332100002800348700001700376700002100393700002500414700002100439700002100460700002400481700001800505700001900523700002500542856006600567 2012 eng d00aDevelopment of a turbid reef in the Middle Miocene (East Kalimantan, Indonesia)0 aDevelopment of a turbid reef in the Middle Miocene East Kalimant aCharlotte, North Carolina, USA a6230 v7710aINDONESIA10amarginal ecosystems10aMiocene10apalaeonvironmental reconstruction10apatch reefs1 aSantodomingo, Nadiezhda1 aNovak, Vibor1 aMarshall, Nathan1 aDi Martino, Emanuela1 aFraser, Nicholas1 aLoGiudice, Elena1 aPretković, Vedrana1 aRösler, Anja1 aRenema, Willem1 aJohnson, Kenneth, G. uhttps://gsa.confex.com/gsa/2012AM/webprogram/Paper209284.html00599nas a2200193 4500008004100000245006900041210006700110260003100177300000800208490000700216653001200223653001400235653002000249653001200269653001300281100002500294700002000319856006600339 2012 eng d00aBryozoan diversity in the Miocene of East Kalimantan (Indonesia)0 aBryozoan diversity in the Miocene of East Kalimantan Indonesia aCharlotte, North Carolina a6240 v4410aBRYOZOA10aDiversity10aEast Kalimantan10aMiocene10aTAXONOMY1 aDi Martino, Emanuela1 aTaylor, Paul, D uhttps://gsa.confex.com/gsa/2012AM/webprogram/Paper205773.html00848nas a2200277 4500008004100000245005900041210005800100300001200158490000800170100001900178700002100197700002400218700001800242700001300260700002500273700001300298700001800311700002200329700001900351700001600370700002300386700002600409700002200435700002100457856009200478 2008 eng d00aHopping Hotspots: global shifts in marine biodiversity0 aHopping Hotspots global shifts in marine biodiversity a654-6570 v3211 aRenema, Willem1 aBellwood, D., R.1 aBraga, Juan, Carlos1 aBromfield, K.1 aHall, R.1 aJohnson, Kenneth, G.1 aLunt, P.1 aMeyer, C., P.1 aMcMonagle, L., B.1 aMorley, R., J.1 aO’dea, A.1 aTodd, Jonathan, A.1 aWesselingh, Frank, P.1 aWilson, M., E. J.1 aPandolfi, J., M. uhttps://ipaeg.myspecies.info/content/hopping-hotspots-global-shifts-marine-biodiversity