Zobrazeno 1 - 10
of 145
pro vyhledávání: '"Robert G. Sheath"'
Publikováno v:
Phytotaxa. 470:1-30
The diatom genus Planothidium from streams and rivers in California was studied by applying the most current species designations. Twenty Planothidium taxa were identified in total, including a previously undescribed species, Planothidium californicu
Autor:
Pertti Eloranta, Morgan L. Vis, Rosalina Stancheva, Janina Lee, Robert G. Sheath, Sunil Tiwari, Bryan Kennedy, Joshua R. Evans
Publikováno v:
ALGAE. 35:213-224
Publikováno v:
Fottea. 19:163-174
This study presents the first record of the ochrophyte alga Tetrasporopsis fuscescens in North America, confirmed with light and transmission electron microscopic photomicrographs, cytochemical and molecular phylogenetic analyses. T. fuscescens was r
Publikováno v:
Phycologia. 57:465-476
During a broad survey of the stream algae of California, a rare and unusual green alga was encountered. Samples were collected in three sites, one 200 m from a stream outlet into the Pacific Ocean and the others 6–20 km inland from the ocean. We in
Autor:
Robert G. Sheath, Kimberly Y. Conklin, Timothy G. Otten, Rich Fadness, Xiaoyu Zhang, Gregory L. Boyer, Betsy A. Read, Rosalina Stancheva
Publikováno v:
Harmful algae. 93
Reports of anatoxins poisoning of wildlife and domestic animals by toxigenic cyanobacteria in streams and rivers are increasing globally. Little is known about the taxonomy, morphology and genomics of anatoxins producing species, limiting our knowled
Autor:
Meredith D.A. Howard, A. Elizabeth Fetscher, Martha Sutula, Rosalina Stancheva, Eric D. Stein, Robert G. Sheath, Raphael M. Kudela, Lilian B. Busse
Publikováno v:
Harmful Algae. 49:105-116
Lentic water bodies and large rivers have long been recognized as being susceptible, under certain conditions, to toxin-producing (“toxigenic”) planktonic cyanobacterial blooms. Although benthic cyanobacteria commonly inhabit wadeable (i.e., shal
Autor:
Kirsten M. Müller, Troina B. Shea, Wayne B. Chiasson, Robert G. Sheath, Aline Chhun, Morgan L. Vis
Publikováno v:
Journal of Great Lakes Research. 40:27-34
Bangia atropurpurea was first observed in Lake Erie in 1964 and subsequently spread to the lower Laurentian Great Lakes by the mid to late 1970s. The present study was initiated to examine the recent distribution of B. atropurpurea in the Great Lakes
Autor:
Rosalina Stancheva, Robert G. Sheath, Raphael D. Mazor, J. Patrick Kociolek, Eric D. Stein, Peter R. Ode, A. Elizabeth Fetscher, Lilian B. Busse
Publikováno v:
Journal of Applied Phycology. 26:433-450
Stream algal indices of biotic integrity (IBIs) are generally based entirely or largely on diatoms, because non-diatom (“soft”) algae can be difficult to quantify and taxonomically challenging, thus calling into question their practicality and co
Autor:
A. Elizabeth Fetscher, Kimberly D. McArthur, Rosalina Stancheva, Robert G. Sheath, Betsy A. Read, Chrystal Schroepfer, J. Patrick Kociolek
Publikováno v:
Hydrobiologia. 720:111-127
A weight-of-evidence approach was used to examine how nutrient availability influences stream benthic algal community structure and to validate nutrient-response thresholds in assessing nutrient limitation. Data from 104 southern California streams s
Publikováno v:
Western North American Naturalist. 73:148-157
Pleurocladia lacustris A. Braun is a freshwater member of the Phaeophyceae, a class of algae that occurs almost entirely in marine waters. It has previously been reported from only about 13 freshwater locations worldwide, just 2 of which are in North