The Effect of Mesotocin on Posterior Lymph Heart Pressure, Rate and Lymph Flow in the Toad, Bufo Marinus (L.) PDF Download
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Author: Christopher John Caudle
Publisher:
ISBN:
Category :
Languages : en
Pages : 116
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Author: Christopher John Caudle
Publisher:
ISBN:
Category :
Languages : en
Pages : 116
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Book Description
![Lymph Heart Rate and Pressure from the Posterior and Anterior Lymph Hearts of the Toad Bufo Marinus (L.) [microform] PDF](https://books.google.com/books/content/images/frontcover/yFweQwAACAAJ?fife=w80-h100)
Author: Judy M. (Judy Marilyn) Jones
Publisher: National Library of Canada = Bibliothèque nationale du Canada
ISBN: 9780315906075
Category : Bufo marinus
Languages : en
Pages : 146
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Author: Jacinda W. Wagner
Publisher:
ISBN:
Category :
Languages : en
Pages : 138
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Author: Lindsay E. Robinson
Publisher:
ISBN:
Category :
Languages : en
Pages : 138
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Author: Michael Georgitsis
Publisher:
ISBN:
Category : Bufo marinus
Languages : en
Pages : 82
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Author:
Publisher:
ISBN:
Category : Bufo marinus
Languages : en
Pages : 41
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To protect and manage Pacific Northwest salmonid stocks, sound management programs must be developed that incorporate knowledge of the ecological processes critical to their survival. One such process is the nutrient dynamic in headwater spawning streams. It is essential that we understand the trophic relationships among the spawners, the I to 3 year-old juveniles, the invertebrates, and the primary producers in these streams. The hypothesis that I tested is that photoautotrophic production increases due to the decomposition of salmon carcasses. Increased primary production would stimulate the production of invertebrates which are an important food resource of juvenile salmonid species. The hypothesis was tested by comparing periphyton communities sampled from upstream reference sites with those sampled from sites within and downstream of a onemile reach of Still Creek, a stream within the Zigzag Ranger District of the Mount Hood National Forest, in which approximately 300 coho (Oncorhynchus kisutch) carcasses were distributed. Comparisons were based on the numbers of each diatom species observed and periphyton biomass measured as chlorophyll a concentration and mass of organic matter lost on ignition. To more accurately characterize the response of the periphyton community, base-line data were collected before enrichment ascertaining the initial degree of nutrient limitation and measuring the variation within and among sample sites prior to site modification. Nutrient concentration and physical characteristics of the water were also monitored. The data collected indicate that the periphyton communities at each site were similar before carcass enrichment. After enrichment, treatment sites showed an increase in periphyton biomass. No change in species composition was observed from reference to treatment sites during the enrichment. Some suggestions are made for improving the experimental design to better characterize the response of the periphyton community to salmon carcass decomposition, such as increasing sample size, adding more "before treatment" sample times, and adding a second treatment stream.
Author: Dane Alan Crossley (II.)
Publisher:
ISBN:
Category : Amphibians
Languages : en
Pages : 84
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Author: Scott Landry
Publisher:
ISBN:
Category :
Languages : en
Pages : 120
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Author: Jennifer Lynn Stanley
Publisher:
ISBN:
Category :
Languages : en
Pages : 96
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Author: I. Assenmacher
Publisher: Springer Science & Business Media
ISBN: 3642669816
Category : Medical
Languages : en
Pages : 344
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Book Description
From 11 to 15 July 1977 about 60 physiologists, endo crinologists, ecologists and other biologists from 14 countries convened at the University Montpellier for a symposium on Environmental Endocrinology. This meet ing was organized as a Satellite Symposium of the 27th International Congress of Physiological Sciences, Paris, 18-23 July 1977. This volume is a record of the com munications presented at the symposium. The objectives of the program were to examine the role of the endocrine system in a wide spectrum of adjustments and adaptations to changes in environmental conditions by various spe cies of animals, including man, and to promote an ex change of ideas among investigators who have approached these functions from diverse aspects. The diversity of the information and ideas communicated is great. Of necessity, they represent only an extremely modest se lection of the many facets of endocrine function in the interaction of animals with their environments. Be yond the usefulness of the communications individually, we hope that they collectively demonstrate the substan tial heuristic value of the concept of environmental endocrinology as it was perceived by the participants. We acknowledge gratefully the kindness and sympathy of Professor Jaques ROUZAUD, President of the University of Montpellier II, for his generous extension of the hospitality of the University to the Symposium. We are most grateful to Mrs. Monique VIEU who effected so well the secretarial organization of the Sympos.
