Author: David Buursma FieldPublisher:
ISBN:
Category :
Languages : en
Pages : 400
Book Description
Planktonic Foraminifera in the California Current
Author: David Buursma FieldPlanktonic Foraminifera from the Lower Tertiary of California
Author: Ronald Roy SchmidtPublisher:
ISBN:
Category : Foraminifera
Languages : en
Pages : 744
Book Description
Planktic Foraminifers of the California Current at 42°N
Author: Joseph D. OrtizPublisher:
ISBN:
Category : Foraminifera
Languages : en
Pages : 438
Book Description
MOCNESS plankton tows, sediment traps and sedimentary material are used to determine the linkage between bio-physical forcing and foraminiferal response over a range of time scales from the event scale to the glacial interglacial cycle. The annually averaged planktic foraminiferal fauna of the modem California Current is a diverse community composed of individuals from subarctic, transitional, and subtropical foraminiferal assemblages. This community is more diverse, but less abundant in total standing stock and shell flux than the subarctic community of the Gulf of Alaska. The use of plankton tow and isotopic data allow us to partition the foraminiferal community into shallow dwelling euphotic zone species and deep dwelling sub-thermocline species. On both the event and seasonal time scales, heterotrophic species were most abundant in cold, biomass rich coastal waters. In contrast, species which harbored endosymbionts were more abundant in oligotrophic waters with higher ambient light levels. During the Last Glacial Maximum (LGM), the diverse modern fauna was replaced with a low diversity, high flux, heterotrophic community similar to that of the modern Gulf of Alaska. Modern analog temperature estimates suggest the California Current was roughly 3°C cooler during the LGM than today. Coupled with oxygen isotopic results from G. bulloides, the surface thermal structure implies an equatorward flowing glacial California Current at these sites. The Polar Front thus remained north of these locations during the LGM. Comparison of glacial G. bulloides carbon isotopes and shell accumulation rates with organic carbon flux estimates implies the glacial California Current was (1) higher in nutrient content, (2) lower in plankton biomass, and (3) lower in export carbon flux than its modem counterpart. This description suggests that during the LGM the plankton community of the California Current was very similar to the modern plankton community of the Gulf of Alaska.
Ecology of Living Planktonic Foraminifera in the North and Equatorial Pacific Ocean
Author: John Stratlii BradshawPublisher:
ISBN:
Category : Foraminifera
Languages : en
Pages : 552
Book Description
Modern Planktonic Foraminifera
Author: Christoph HemlebenPublisher: Springer
ISBN:
Category : Science
Languages : en
Pages : 394
Book Description
In a single volume, the authors bring together a review of current biological understanding of planktonic foraminifera and apply it to developments in sedimentology. With the growing interest in the shells of this class of protozoa as indicators of the history of the earth, revealed through the sedimentary record, a comprehensive analysis of the biology of contemporary foraminifera has become necessary. Main topics covered include Taxonomy, Collecting and Culture Methods, Cellular Ultrastructure, Host and Symbiont Relationships, Trophic Activity and Nutrition, Reproduction, Shell Ontogeny and Architecture, Ecology and Sedimentation and Settlement of Shells.
A Rewiew of the Planktonic Foraminifera from the Upper Cretaceous of California
Author: Joseph J. GrahamSeasonal Variability in the Flux and Stable Isotopic Composition of Planktonic Foraminifera from the Upwelling Region
Author: Leslie Reynolds SautterPublisher:
ISBN:
Category : Marine ecology
Languages : en
Pages : 194
Book Description
Distribution of Recent Benthic Foraminifera Off the North American Pacific Coast from California to Baja
Author: Stephen J. CulverPublisher:
ISBN:
Category : Science
Languages : en
Pages : 652
Book Description
Pliocene and Pleistocene Foraminifera from Southern California
Author: Rufus Mather BaggPublisher:
ISBN:
Category : Foraminifera, Fossil
Languages : en
Pages : 446
Book Description
Manual of Planktonic Foraminifera: Upper Tertiary (Middle Miocene-Recent)
Author: J. A PostumaPublisher:
ISBN:
Category : Foraminifera, Fossil
Languages : en
Pages : 154
Book Description