Download or read book Population Dynamics of Daphnia Pulex written by Sidney John Crabtree and published by . This book was released on 1975 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book POPULATION DYNAMICS OF DAPHNIA PULEX UNDER STRESS EFFECTS OF LOW PH AND FOOD MODELLING STOCHASTIC STATISTICS LIFE TABLES written by PAUL JOSEPH RAGO and published by . This book was released on 1986 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: reduced the rate of growth in length but not the maximum length attained.

Download or read book Population Dynamics of Daphnia Pulex and Utilization by the Rainbow Trout Salmo Gairdneri written by W. W. Taylor and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Population Dynamics of Daphnia Pulex Leydig and Daphnia Schodleri Sars 1862 Under Temporary Pond Conditions written by Dennis K. Krochak and published by . This book was released on 1971 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Population Dynamics of Daphnia Pulex in an Oxidation Pond System written by John Alan Hayward and published by . This book was released on 1977 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effects of Chronic Lead on the Population Dynamics of Daphnia Pulex written by Marie Bradford and published by . This book was released on 1982 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Winter Population Dynamics of Daphnia Pulex in Sewage Oxidation Ponds written by Terry Edwin Quinney and published by . This book was released on 1977 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Population Dynamics and Production of Daphnia in Oneida Lake New York with Reference to Predation by Young Yellow Perch written by Hays Lawrence Clark and published by . This book was released on 1975 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Feeding Filtering Fecundity and Growth Kinetics as Limits to Population Dynamics of Daphnia Pulex written by Mike Allan Wessels and published by . This book was released on 1986 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book THE DYNAMICS OF DAPHNIA PULEX POPULATIONS AND OF DUGESIA TIGRINA POPULATIONS AS MODIFIED BY IMMIGRATION written by JOSEPH THEXTON ARMSTRONG (JR) and published by . This book was released on 1959 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Consequences of Anti predator Strategies for Population Dynamics written by Kylie Sarah Ruth Yarlett and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Consequences of Anti predator Strategies for Population Dynamics written by Kylie Sarah Ruth Yarlett and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Offspring Size number Tradeoffs and Food Quality Feedbacks Impact Population Dynamics in a Daphnia Algae System written by Ryan Wenkus and published by . This book was released on 2016 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: Population fluctuations can be affected by a number of extrinsic and intrinsic factors, but few manipulative experiments have been conducted that can isolate these effects in consumer-resource systems. Extrinsic factors such as weather patterns or food availability can impact consumer growth and reproduction. Additionally, intrinsic factors relating to life history can have significant impacts on population growth rates. A fundamental principle of life history theory is that individuals are limited by trade-offs between survival and reproduction, and there are a variety of combinations, given environment and physiological limitations, that should maximize lifetime reproductive output. Reproductive strategies vary between species, but are also prevalent intraspecifically, with a key trade-off being whether mothers produce either many small offspring, or fewer large offspring. Theoretical modeling studies have shown that this trade-off in offspring size versus number, through maturation time, can have significant impacts on population dynamics. The objective of my research was to experimentally test the effect of an intrinsic offspring size-number trade-off on population stability and food availability in a dynamic consumer-resource system. I hypothesized that the trade-off would impact internal consumer population characteristics such as biasing stage structure towards adults, increasing adult size, and increasing population-level reproduction. I predicted that this adult-dominated stage structure would lead to instability and a low quantity-high quality food state. I experimentally manipulated the number and size of juveniles in populations of the consumer Daphnia pulex, creating a shift from many, small offspring to fewer, larger offspring. Experiments controlled for the ingestion pressure on algal prey at the time of the manipulation. Two sets of experiments were performed in order to examine the interaction of an extrinsic factor (light levels) and intrinsic population structure on dynamics: a dark experiment conducted in no light examining intrinsic structure only; and low and high light environments examining the interaction of intrinsic and extrinsic factors. Control populations, with no manipulation of offspring size/number, were established and monitored. In all experimental set-ups, the manipulated populations became dominated by large adults. Contrary to predictions, amplitudes in population biomass were lower in manipulated populations, representing higher stability in these populations. Furthermore, in high light conditions, a stable low Daphnia -- high algae biomass (low quality) state was observed in manipulated populations but not in control populations. This shows a strong link between light levels as an extrinsic factor and the life history manipulation of consumer offspring size vs. number, through resource quality, that impacts population dynamics.

Download or read book The Effects of Varying Wavelengths Intensities and Polarized Light on Population Dynamics and Ephippial Production of Daphnia Pulex Leydig 1860 Emend Richard 1896 written by Arthur L. Buikema and published by . This book was released on 1965 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Dynamics of Daphnia Pulex Populations and of Dugesia Tigrina Populations as Modified by Immigration written by Joseph Thexton Armstrong and published by . This book was released on 1959 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Morphological Changes Fish Predation and Elements of Sexual Reproduction in Populations of Daphnia Pulex written by John R. Krummel and published by . This book was released on 1978 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Inhibition of Population Growth in Daphnia Pulex when Fed Senescent phase Chamydomonas written by Jane Catherine Jones and published by . This book was released on 1964 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: