Reference Type: Journal Article Record Number: 113 Author
Notes: FLA 00030031 University of Notre Dame Copyright 1956 The University of Notre Dame URL
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Notes: FLA 00030031
University of Notre Dame Copyright 1956 The University of Notre Dame URL: http://links.jstor.org/sici?sici=0003-0031%28195607%2956%3A1%3C88%3AAQAQSO%3E2.0.CO%3B2-E Reference Type: Journal Article Record Number: 66 Author: Rao, C. B. Year: 1955 Title: On the Distribution of Algae in a Group of Six Small Ponds: II. Algal Periodicity Journal: The Journal of Ecology Volume: 43 Issue: 1 Pages: 291-308 Date: Jan. Abstract: 1. An attempt is made to relate the distribution and periodicity of algae in six small ponds, lying in close proximity, to variations in dissolved substances and to weather conditions. 2. Observations were made on three of the ponds for 24 months, and on the others for 12 months, analyses of the water and estimates of the algal populations being made monthly. 3. Flagellates (Volvocales, Chrysophyceae, Cryptophyceae, Dinophyceae and Euglenineae) were more numerous in the acidic ponds. 4. Chrysophyceae were mainly early spring forms; Dinophyceae, in general, characterized late spring. Cryptomonas showed a spring peak and a secondary peak in mid-summer. Oxidizable organic matter appeared to be the chief factor affecting the periodicity of these three groups. 5. Euglenineae were abundant whenever concentration of albuminoid ammonia was low, which happened during early spring or throughout spring, and also at midsummer. 6. Green algae (Volvocales, Chlorococcales and desmids) were poorly represented in ponds with a high concentration of albuminoid ammonia and low oxygen concentrations. 7. Chlorococcales attained abundance when water temperatures were higher (June to August). 8. Desmid peaks appeared to be related to higher water temperatures and prolonged sunshine, and synchronized with a rise in pH. 9. Diatoms were in larger numbers in alkaline ponds. Peaks were, in general, observed in spring and autumn after periods of high concentration of silica, nitrate and phosphate. These substances, however, are not regarded as limiting factors in the development of diatoms in the ponds. 10. Myxophyceae were plentiful where there were high organic content and low oxygen concentrations, together with pH around neutrality. Prolonged sunshine and high concentration of organic matter were related to the periodicity of these algae, which were generally abundant between May and October. 11. The total algal population in each pond was high in spring, summer and early autumn, and this was related to a high concentration of organic matter and a high C/N ratio, these two factors being related to the monthly sunshine totals. 12. The general seasonal succession of algae was more or less the same in all the ponds and was correlated with the changing chemical composition of the water. Euglenineae and other flagellates were dominant in early spring or throughout spring, some with a secondary peak in midsummer. The spring diatom peak was followed by green algae, which were dominant at midsummer. Blue-green algae reached their maximum from May to October. The second diatom peak came in early autumn. Notes: FLA 00220477
Cambridge University Press Copyright 1955 British Ecological Society URL: http://links.jstor.org/sici?sici=0022-0477%28195501%2943%3A1%3C291%3AOTDOAI%3E2.0.CO%3B2-2 Reference Type: Journal Article Record Number: 10 Author: Ingram, William Marcus; Prescott, G. W. Year: 1954 Title: Toxic Fresh-water Algae Journal: American Midland Naturalist Volume: 52 Issue: 1 Pages: 75-87 Date: Jul. Abstract: Outbreaks of human gastroenteritis have not been positively traced to algae. Algae that have been responsible for mammalian, avarian, and fish deaths through some toxic action are all to be found in the blue-green algal group, the Cynapophyta. The Cyanophyta species that have been associated with animal deaths belong in the genera: Microcystis, Aphanizomenon, Anabaena, Nodularia, Coelosphaerium, and Gloeotrichia. Often when deaths of animals occur, a wind has been reported blowing, thus tending to concentrate algae in lee-shore areas. Cattle that drink only small quantities of water containing Microcystis may not die but do show a series of illness symptoms, one of which is a drop in milk yield. Symptomatic treatment has been recommended by Steyn (1945) for cattle poisoned by algae. Various writers have made reference to several toxic substances associated with blue-green algae. Substances that are toxic enough to cause illness or death in animals are not present in all blue-green algae. Water in which certain blue-green algae have bloomed may produce death in mammals and fish when the algal cells themselves are excluded. The toxic material from certain algae may survive the laboratory equivalent of water treatment, using alum coagulation, filtration and chlorination. It may survive activated carbon treatment in amounts corresponding to that used in water treatment plants, and after massive treatment with Norite A. Notes: FLA 00030031
University of Notre Dame Copyright 1954 The University of Notre Dame URL: http://links.jstor.org/sici?sici=0003-0031%28195407%2952%3A1%3C75%3ATFA%3E2.0.CO%3B2-T Reference Type: Journal Article Record Number: 65 Author: Peckham, Richard S.; Dineen, Clarence F. Year: 1953 Title: Summer Plankton of Lake Amatitlan, Guatemala Journal: American Midland Naturalist Volume: 50 Issue: 2 Pages: 377-381 Date: Oct. Notes: FLA 00030031
University of Notre Dame Copyright 1953 The University of Notre Dame URL: http://links.jstor.org/sici?sici=0003-0031%28195310%2950%3A2%3C377%3ASPOLAG%3E2.0.CO%3B2-4 Reference Type: Journal Article Record Number: 38 Author: Dineen, Clarence F. Year: 1953 Title: An Ecological Study of a Minnesota Pond Journal: American Midland Naturalist Volume: 50 Issue: 2 Pages: 349-376 Date: Oct. Abstract: An ecological study of a small pond in Minnesota was conducted over a period of nearly two years. At present, the pond is in a transitional stage between perennial and temporary aquatic community conditions. The physical and chemical factors were analyzed. The bottom deposits (maximum deposition 4 M) were studied in some detail with respect to the developmental history of the pond. A flourishing peripheral belt of emergent plants (Sagittaria, , Acorus) was present. The annual deposition of organic matter from these was a major force in reducing the area and depth of the pond. Duckweed covered a large part of the pond during the warmer months. Algae were common particularly Hydrodictyon and Aphanizomenon which reached "bloom" stages during the summer. The production of algae was correlated with the chemical conditions of the water. Potamogeton berchtoldi was the only rooted aquatic plant. Seasonal and annual variations in the populations of plants and animals were determined by quantitative measurements. The organisms in the pond community formed a food web which was in a "balanced" condition during the first part of this study, however, abnormal climatic conditions resulted in winter anaerobiosis and a complete winterkill of fishes (top predators). Consequently, the populations of various organisms lower in the food web were altered greatly. Pronounced predator-prey dynamics were indicated by the trophic relationships of the fishes, snail leeches and browsers. The food web consisted of seven major food groups, namely, (1) phytoplankters, (2) zooplankters, (3) browsers, (4) plankton predators, (5) benthic predators, (6) Hydrodictyon and Lemnaceae, and (7) pondweed. The total annual production of each food group was determined. The food groups formed fairly discrete trophic levels. The producer level included the chlorophyll-bearing plant (pondweed, phytoplankton, Hydrodictyon and Lemnaceae). The primary consumer level consisted of zooplankters and browsers. The secondary consumers included the predators except the fishes which during the first year of this study constituted a third consumer level. The biological efficiency of each trophic level of the food web was computed by comparing the total production of organisms in each trophic level with the total production of organisms in the preceding level. The total production of organisms at each trophic level decreased while the biological efficiency increased from the lowest level (producer) to the top consumer level, thus, supporting the Lindeman ratio (p/e, Allee and co-workers, 1949). The dynamics of the pond community indicated that the exchange of energy, as measured by the production of organic materials, from one trophic level to the next is low even though the pond community was fertile and productive. Notes: FLA 00030031
University of Notre Dame Copyright 1953 The University of Notre Dame URL: http://links.jstor.org/sici?sici=0003-0031%28195310%2950%3A2%3C349%3AAESOAM%3E2.0.CO%3B2-V Reference Type: Journal Article Record Number: 30 Author: Williams, A. E.; Burris, R. H. Year: 1952 Title: Nitrogen Fixation by Blue-Green Algae and Their Nitrogenous Composition Journal: American Journal of Botany Volume: 39 Issue: 5 Pages: 340-342 Date: May Abstract: Bacteria-free cultures of blue-green algae were tested for their ability to fix N$_2$; N$_2^{15}$ was used as a tracer. Fixation was not obtained with Coccochloris peniocystis, Diplocystis aeruginosa, Gloeocapsa membranina, Aphanizomenon flos-aquae, Plectonema nostocorum, Phormidium tenue, or Gloeocapsa dimidiata. In addition to Nostoc muscorum, Calothrix parietina and another culture, tentatively identified as a Nostoc, fixed N$_2$. Fixation by Calothrix parietina verifies the existence of nitrogen fixation in the Rivulariaceae. The partial amino acid composition of Nostoc muscorum, Calothrix parietina and Diplocystis aeruginosa was determined; methionine was notably low among the amino acids essential for human nutrition. Notes: FLA 00029122
American Botanical Society latex
Copyright 1952 Botanical Society of America URL: http://links.jstor.org/sici?sici=0002-9122%28195205%2939%3A5%3C340%3ANFBBAA%3E2.0.CO%3B2-2 Reference Type: Journal Article Record Number: 64 Author: Bryden, Robert R. Year: 1952 Title: Ecology of Pelmatohydra oligactis in Kirkpatricks Lake, Tennessee Journal: Ecological Monographs Volume: 22 Issue: 1 Pages: 45-68 Date: Jan. Notes: FLA 00129615
The Duke University Press EN Copyright 1952 The Ecological Society of America URL: http://links.jstor.org/sici?sici=0012-9615%28195201%2922%3A1%3C45%3AEOPOIK%3E2.0.CO%3B2-U Reference Type: Journal Article Record Number: 37 Author: Blackburn, Kathleen B. Year: 1952 Title: The Dating of a Deposit Containing an Elk Skeleton Found at Neasham Near Darlington, County Durham Journal: New Phytologist Volume: 51 Issue: 3 Pages: 364-377 Date: Nov. Notes: FLA 0028646x
Cambridge University Press Copyright 1952 New Phytologist Trust URL: http://links.jstor.org/sici?sici=0028-646X%28195211%2951%3A3%3C364%3ATDOADC%3E2.0.CO%3B2-5 Reference Type: Journal Article Record Number: 29 Author: Spencer, John L. Year: 1950 Title: The Net Phytoplankton of Quabbin Reservoir, Massachusetts, in Relation to Certain Environmental Factors Journal: Ecology Volume: 31 Issue: 3 Pages: 405-425 Date: Jul. Notes: FLA 00129658
Brooklyn Botanic Garden EN Copyright 1950 The Ecological Society of America URL: http://links.jstor.org/sici?sici=0012-9658%28195007%2931%3A3%3C405%3ATNPOQR%3E2.0.CO%3B2-W Reference Type: Journal Article Record Number: 63 Author: Newcombe, Curtis L. Year: 1950 Title: A Quantitative Study of Attachment Materials in Sodon Lake, Michigan Journal: Ecology Volume: 31 Issue: 2 Pages: 204-215 Date: Apr. Notes: FLA 00129658
Brooklyn Botanic Garden EN Copyright 1950 The Ecological Society of America URL: http://links.jstor.org/sici?sici=0012-9658%28195004%2931%3A2%3C204%3AAQSOAM%3E2.0.CO%3B2-9 Reference Type: Journal Article Record Number: 14 Author: Gerloff, Gerald C.; Fitzgerald, George P.; Skoog, Folke Year: 1950 Title: The Mineral Nutrition of Coccochloris Peniocystis Journal: American Journal of Botany Volume: 37 Issue: 10 Pages: 835-840 Date: Dec. Abstract: A quantitative study has been made of the mineral nutrition of bacteria-free Coccochloris Peniocystis. For this purpose, a synthetic nutrient solution was developed with the same concentrations of the essential elements as in Chu No. 10 solution, but superior to it because it permits independent variation in the concentration of each essential element. Coccochloris Peniocystis requires an unusually high pH for maximum growth. No growth developed in cultures maintained at a pH of 5.0 or 6.0, and only slight yields were obtained at pH 7.0 and 8.0. Growth increased considerably at pH 9.0, reached a maximum at 10.0, and declined again at pH 11.0. This alga requires much higher concentrations of nitrogen than of the other essential elements. Maximum growth occurred in culture solutions with a N/P ratio of approximately 30/1. The minimum concentrations of the essential dements for optimum yields was 13.6 p. p. m. nitrate nitrogen, 0.45 p. p. m. phosphorus, 0.83 p. p. m. sulfur, 2.25 p. p. m. potassium, 0.13 p. p. m. magnesium, and 0.03 p. p. m. iron. Omitting the addition of calcium salts did not decrease yields. A comparison of freshly dissolved ferric chloride and ferric citrate as an iron source for this organism showed that with the concentration in the basic solution, 0.56 p. p. m. iron, the two salts were equally effective, but at low iron concentrations, 0.03 and 0.06 p. p. m., ferric citrate was more effective. The results demonstrate a method for obtaining specific information on the growth requirements and the relative amounts of essential elements which are necessary for maximum growth of blue-green algae. Notes: FLA 00029122
American Botanical Society Copyright 1950 Botanical Society of America URL: http://links.jstor.org/sici?sici=0002-9122%28195012%2937%3A10%3C835%3ATMNOCP%3E2.0.CO%3B2-J Reference Type: Journal Article Record Number: 62 Author: Edmondson, W. T. Year: 1946 Title: Factors in the Dynamics of Rotifer Populations Journal: Ecological Monographs Volume: 16 Issue: 4 Pages: 357-372 Date: Oct. Notes: FLA Symposium on Dynamics of Production in Aquatic Populations 00129615 The Duke University Press EN Copyright 1946 The Ecological Society of America URL: http://links.jstor.org/sici?sici=0012-9615%28194610%2916%3A4%3C357%3AFITDOR%3E2.0.CO%3B2-K Reference Type: Journal Article Record Number: 59 Author: Edmondson, W. T. Year: 1945 Title: Ecological Studies of Sessile Rotatoria, Part II: Dynamics of Populations and Social Structures Journal: Ecological Monographs Volume: 15 Issue: 2 Pages: 141-172 Date: Apr. Notes: FLA 00129615
The Duke University Press EN Copyright 1945 The Ecological Society of America URL: http://links.jstor.org/sici?sici=0012-9615%28194504%2915%3A2%3C141%3AESOSRP%3E2.0.CO%3B2-Y Reference Type: Journal Article Record Number: 61 Author: Chandler, David C.; Weeks, Owen B. Year: 1945 Title: Limnological Studies of Western Lake Erie: V. Relation of Limnological and Meteorological Conditions to the Production of Phytoplankton in 1942 Journal: Ecological Monographs Volume: 15 Issue: 4 Pages: 435-457 Date: Oct. Notes: FLA 00129615
The Duke University Press EN Copyright 1945 The Ecological Society of America URL: http://links.jstor.org/sici?sici=0012-9615%28194510%2915%3A4%3C435%3ALSOWLE%3E2.0.CO%3B2-M Reference Type: Journal Article Record Number: 60 Author: Burkholder, Paul R.; Sinnott, Edmund W. Year: 1945 Title: Morphogenesis of Fungus Colonies in Submerged Shaken Cultures Journal: American Journal of Botany Volume: 32 Issue: 7 Pages: 424-431 Date: Jul. Abstract: Observations were made on the development of submerged colonies in shaken cultures of about 150 species of fungi grown in three kinds of nutrient solution. In still cultures, most fungi form mats of mycelium floating at the surface of the nutrient solution; but in agitated cultures, they develop discrete globose colonies which commonly possess characteristic metabolism, color, texture, and surface features. The tissues of these colonies are usually prosenchyma, elastic, and sponge-like, with fluid filling the interhyphal spaces. Typical colonies may develop from germinating single spores or groups of spores, from fragments of mycelium, or from whole perithecia, etc. Polarized growth of sporelings gives way in early stages of development to branched hyphae which continue to grow outward and intertwine in such a way as to form a globose body. The developmental history of Penicillium notatum was studied at various stages of growth from spore germination to the formation of large colonies. The rate of growth, texture, and characteristic surface features of fungus colonies varied considerably with differences in composition of the medium. Alternating temperature, and intermittent shaking resulted in the development of alternating zones of different texture. Delayed shaking resulted in the formation of colonies with irregular shape. It is suggested that the development of spherical colonies results from their equal exposure on all sides to various factors, such as gravity and chemical gradients, which in still culture would be unilateral in incidence and effect. The genetic constitution of an organism, as illustrated by these plants, evidently reacts specifically to three types of environmental influences: (1) external factors to which it is exposed on one side more strongly than on the other and which thus tend to produce oriented or unsymmetrical growth; (2) external factors to which it is exposed equally on all sides but which by differences in character or quality produce diverse effects; and (3) factors in the internal environment more immediately under genic control and relatively independent of external influences. Notes: FLA 00029122
American Botanical Society Copyright 1945 Botanical Society of America URL: http://links.jstor.org/sici?sici=0002-9122%28194507%2932%3A7%3C424%3AMOFCIS%3E2.0.CO%3B2-A Reference Type: Journal Article Record Number: 57 Author: Hutchinson, G. Evelyn Year: 1944 Title: Limnological Studies in Connecticut. VII. A Critical Examination of the Supposed Relationship between Phytoplakton Periodicity and Chemical Changes in Lake Waters Journal: Ecology Volume: 25 Issue: 1 Pages: 3-26 Date: Jan. Notes: FLA 00129658
Brooklyn Botanic Garden EN Copyright 1944 The Ecological Society of America URL: http://links.jstor.org/sici?sici=0012-9658%28194401%2925%3A1%3C3%3ALSICVA%3E2.0.CO%3B2-H Reference Type: Journal Article Record Number: 3 Author: Edmondson, W. T. Year: 1944 Title: Ecological Studies of Sessile Rotatoria: Part I. Factors Affecting Distribution Journal: Ecological Monographs Volume: 14 Issue: 1 Pages: 31-66 Date: Jan. Notes: FLA 00129615
The Duke University Press EN Copyright 1944 The Ecological Society of America URL: http://links.jstor.org/sici?sici=0012-9615%28194401%2914%3A1%3C31%3AESOSRP%3E2.0.CO%3B2-N Reference Type: Journal Article Record Number: 58 Author: Dutton, Herbert J.; Juday, Chancey Year: 1944 Title: Chromatic Adaptation in Relation to Color and Depth Distribution of Freshwater Phytoplankton and Large Aquatic Plants Journal: Ecology Volume: 25 Issue: 3 Pages: 273-282 Date: Jul. Notes: FLA 00129658
Brooklyn Botanic Garden EN Copyright 1944 The Ecological Society of America URL: http://links.jstor.org/sici?sici=0012-9658%28194407%2925%3A3%3C273%3ACAIRTC%3E2.0.CO%3B2-P Reference Type: Journal Article Record Number: 55 Author: Prescott, Gerald W.; Croasdale, Hannah T. Year: 1942 Title: The Algae of New England. II. Additions to the Freshwater Algal Flora of Massachusetts Journal: American Midland Naturalist Volume: 27 Issue: 3 Pages: 662-676 Directory: chemistry chemistry -> Summer 2015 Research Opportunities for Chemistry & Biochemistry Undergraduates chemistry -> Application for Summer Undergraduate Research Program nsf research Experiences for Undergraduates (reu) – 2015 Please Print Clearly or Type chemistry -> Application for Summer Undergraduate Research Program nsf research Experiences for Undergraduates (reu) – 2016 Please Print Clearly or Type chemistry -> Summer 2014 Research Opportunities for Chemistry & Biochemistry Undergraduates chemistry -> Summer 2016 Research Opportunities for Chemistry & Biochemistry Undergraduates chemistry -> Cloud Point Extraction Methodology for Separation and Microamounts Determination of Lead chemistry -> Spring Hill College List of Nearby Restaurant Options Atlanta Bread Company chemistry -> Where the heck is Fernando de Noronha? chemistry -> Topics 6 & 16: Kinetics 1 Collision theory and rates of reaction Download 1.4 Mb. Share with your friends:
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