The Composition, Abundance, and Depth Distribution of the 1957 Summer Net Zooplankton of Bare Lake, Alaska, After Fertilization (Classic Reprint) PDF Download
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Author: Robert F. Raleigh
Publisher: Forgotten Books
ISBN: 9780332429984
Category : Science
Languages : en
Pages : 24
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Book Description
Excerpt from The Composition, Abundance, and Depth Distribution of the 1957 Summer Net Zooplankton of Bare Lake, Alaska, After Fertilization Plankton sampler, using both the No. 10 and No. 20 silk bolting cloth plankton nets and cups and a 3-liter Kemmerer water sampler. The methods of collection, however, changed to some extent during the study period. For instance, the 1950 samples were collected by oblique hauls with the No. 20 net clarke-bumpus sampler only. In 1951 through July 23, sampling was continued as in 1950. After that date, oblique tows were made with the No. 10 net, and, in addition, surface samples were collected with the 3-1iter Kemmerer bottle and strained through the No. 20 net. The 1952 samples were also collected with the 3-liter Kemmerer bottle at each meter depth, surface through 6 meters. Samples from the various depths were combined and poured through the No. 20 net. At the same time, oblique tows were made with the No. 10 net clarke-bumpus sampler, as in 1951. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Robert F. Raleigh
Publisher: Forgotten Books
ISBN: 9780332429984
Category : Science
Languages : en
Pages : 24
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Book Description
Excerpt from The Composition, Abundance, and Depth Distribution of the 1957 Summer Net Zooplankton of Bare Lake, Alaska, After Fertilization Plankton sampler, using both the No. 10 and No. 20 silk bolting cloth plankton nets and cups and a 3-liter Kemmerer water sampler. The methods of collection, however, changed to some extent during the study period. For instance, the 1950 samples were collected by oblique hauls with the No. 20 net clarke-bumpus sampler only. In 1951 through July 23, sampling was continued as in 1950. After that date, oblique tows were made with the No. 10 net, and, in addition, surface samples were collected with the 3-1iter Kemmerer bottle and strained through the No. 20 net. The 1952 samples were also collected with the 3-liter Kemmerer bottle at each meter depth, surface through 6 meters. Samples from the various depths were combined and poured through the No. 20 net. At the same time, oblique tows were made with the No. 10 net clarke-bumpus sampler, as in 1951. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Robert F. Raleigh
Publisher:
ISBN:
Category : Zooplankton
Languages : en
Pages : 24
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Book Description
Author: Robert F. RALEIGH
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Robert Franklin Raleigh
Publisher:
ISBN:
Category :
Languages : en
Pages : 60
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Book Description
Author: Brian Francis Waters
Publisher:
ISBN:
Category : Freshwater zooplankton
Languages : en
Pages : 58
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Book Description
Author: James R. Thrailkill
Publisher: Forgotten Books
ISBN: 9780666057105
Category : Business & Economics
Languages : en
Pages : 64
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Book Description
Excerpt from Zooplankton Volumes Off the Pacific Coast, 1957: Special Scientific Report-Fisheries No. 326 Plankton samples are used by the U. S Bureau of Commercial Fisheries in studying the early life histories of commercially impor tant or potentially important fishes, including their distribution, abundance. And rate of survival. These collections are also used by Scripps Institution of Oceanography in studies of productivity. These investigations are part of the California Cooperative Oceanic Fisheries Investigations, a program sponsored by the Marine Research Committee and carried out by the Scripps Institution of Oceanography of the University of California. The Bureau of Marine Fisheries of the California Department of Fish and Game. The California Academy of Sciences. The Hopkins Marine Station of Stanford University. And the U. S. Bureau of Commercial Fisheries. Biological Laboratory. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Kenneth Sherman
Publisher: Forgotten Books
ISBN: 9781333750657
Category : Science
Languages : en
Pages : 22
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Book Description
Excerpt from Seasonal and Areal Distribution of Zooplankton in Coastal Waters of the Gulf of Maine, 1967 and 1968 The abundance, composition, and seasonal variations in the distribution of zoo plankton are described. Thirteen taxa were among the more abundant zooplankters in the samples: 6 were holoplanktonic, and 7 were meroplanktonic. Copepods were the dominant zooplankters during all seasons in both years. Zooplankton volumes were highest in the western area (cape Arm to Cape Elizabeth), intermediate in the central area (cape Elizabeth to Mt. Desert Island), and lowest in the eastern sector (mt. Desert Island to Machias Bay). The differences in zooplankton abundance among areas and between years were caused by variations in the timing of vernal warming and coastal differences in water column stability and circulation. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Kenneth Sherman
Publisher: Forgotten Books
ISBN: 9780331048322
Category :
Languages : en
Pages : 26
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Book Description
Excerpt from Seasonal and Areal Distribution of Zooplankton in Coastal Waters of the Gulf of Maine, 1964 A description is given of the composition and seasonal variations of zooplankton in coastal waters of the Gulf of Maine during 1964, and comparisons are made between 1963 and 1964. Twelve zooplankton groups (major taxa) were represented in the samples. Five occurred as holoplanktonic forms and seven were mero planktonic. Copepods were the dominant zooplankters during all seasons. Zoo plankton volumes for both years followed similar areal trends. Mean annual volumes were highest in the western area (cape Ann, Mass., to Cape Elizabeth, Maine); moderate in the central area (cape Elizabeth to Mt. Desert Island, Maine); and low in the eastern sector (mt. Desert Island to Machias Bay, Maine). Zooplankton volumes were generally lower in 1964 than in 1963. Seasonal and annual variations in abundance of zooplankters are discussed in relation to hydrography. Local hydrography appears to influence the abundance and distribution of coastal zoo plankters more directly then does the cyclonic-eddy system of the Gulf proper. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Kenneth Sherman
Publisher: Forgotten Books
ISBN: 9780666334671
Category : Science
Languages : en
Pages : 24
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Book Description
Excerpt from Seasonal and Areal Distribution of Zooplankton in Coastal Waters of the Gulf of Maine, 1965 and 1966 A description is given of the abundance, composition, and seasonal variations in distribution of zooplankton. Eleven major taxa were represented in the samples. Six were holoplanktonic, and five were meroplanktonic. Copepods were the dominant zooplankters during all seasons in both years. Zooplankton volumes in both years followed similar areal trends. Mean annual volumes were highest in the western area (cape Arm to Cape Elizabeth), moderate in the central area (cape Elizabeth to Mt. Desert Island), and low in the eastern sector (mt. Desert Island to Machias Bay). Zooplankton volumes were generally lower in 1966 than in 1965. Areal and annual variations in the abundance of zooplankters are discussed in relation to hydrography. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Faith M. Stemmler
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Seasonal composition and abundance of zooplankton along with their physical and chemical environment were investigated in Glacier Bay, AK. Collections were taken six times annually during 2016 and 2017 and separated into upper (0-50 m) and lower water column (50¬-180 m) strata. We found ~70 zooplankton taxa, with copepods dominating both abundance and biomass. We find that zooplankton concentrations within the bay are often an order of magnitude higher than outside. Zooplankton had species-specific preference for particular habitats, with significant populations of Acartia and Oithona in the upper column, Metridia in the lower column, and Pseudocalanus throughout the water column. Seasonality was clearly evident in the upper column, but less so at depth. Copepod nauplii had highest abundances during the spring, concurrent with the spring phytoplankton bloom. Total zooplankton were highest in the summer but with somewhat different timing between the two years. Highest annual zooplankton abundances were observed during May and July of 2016, while during 2017 the highest observed abundances shifted to July and September. These temporal shifts may be temperature-related as 2016 was generally warmer than 2017 by 1-2 °C. Community composition in Glacier Bay differs slightly in leading species from that of the Gulf of Alaska and adjoining Icy Strait. We suggest bathymetry in the bay is too shallow for Neocalanus and Calanus species to form overwintering populations.
