Atlas of Chrysophycean Cysts, Volume 2
Springer Science & Business Media, Feb 28, 2002 - Science - 169 pages
Chrysophytes are a diverse and often abundant group of primarily freshwater algae that are characterized by the endogenous formation of siliceous cysts or stomatocysts (also called statospores or statocysts). Cyst morphology is highly variable, but believed to be species-specific. Cysts have continued to receive attention from phycologists and especially paleoecologists, who use these indicators for assessments of environmental change.
In this volume, we have compiled descriptions, using both scanning electron and light microscopy, as well as line drawings, for 176 new cyst descriptions. In combination with the 155 morphotypes described in the first volume of the Atlas of Chrysophycean Cysts (Duff et al., 1995), we believe that most of the common stomatocysts found in north temperate freshwaters have now been described.
This Atlas attempts to dispel some of the mystery surrounding stomatocysts, to facilitate the accurate identification of individual cyst morphotypes, and to encourage other workers to begin using these important indicators of environmental change. The terminology is outlined in detail. This is followed by detailed descriptions of cyst morphotypes, which continues from work completed in the first Atlas. Any available biogeographical and ecological information is also provided.
We believe this Atlas will be useful to paleoecologists who wish to include stomatocysts in their studies. We also expect this book will be used by researchers working with living chrysophytes, and those interested in the morphology and ultrastructure of cyst morphotypes. Hopefully these descriptions will further accelerate the continued effort to link cyst morphotypes to the algae that produce them.
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Adirondack Park apical diam BIOLOGICAL AFFINITY British Columbia Canada Cape Herschel circulus collar basal diam complex collar conula core depth 0-1 cylindrical collar diam cyst surface definitely identified depth 0-1 cm differentiated from cyst drawing of LM drawing of SEM Duff & Smol ECOLOGY Ellesmere Island emend Gilbert & Smol Gravity core identified this stomatocyst J.P. Smol Lena River Region Line drawing LM DESCRIPTION LM forma LOCALITY mg/L morphotype Moss sample Northwest Territories Nunavut oligotrophic Ontario lakes oval stomatocyst posterior hemisphere primary collar projections Queen's University REFERENCES regular pore diam reticulum Rybak scabrae Scale bar secondary collar SEM DESCRIPTION Siberia Smol in Gilbert specimens spherical stomatocyst diam stomatocyst body stomatocyst elsewhere stomatocyst surface stomatocyst was found stomatocyst was observed STOMATOCYSTS ORNAMENTED surface is ornamented Taylor & Smol ug/L Unidentified Stomatocyst unknown NEGATIVE NUMBER unofficial name unpubl verrucae Wilkinson & Smol Yukon Territory Zeeb & Smol
Page vii - As with the first volume, this book would not have been possible without the encouragement and support of numerous people and organizations.