80501
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80502
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Prasad R. Preliminary observations on the temperature gradients and light penetration in the upper 200 feet of water of the bay of Bengal. ACTA ACUST UNITED AC 1952. [DOI: 10.1007/bf03172304] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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80503
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H. F. SPREAD OF THE BLACK PHASE OF THE RED-BACKED SALAMANDER IN MICHIGAN. Evolution 1952. [DOI: 10.1111/j.1558-5646.1952.tb01414.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Frederick H.
- Test Department of Zoology; University of Michigan; Ann Arbor
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80504
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Water movements in lakes. Appendix. Oscillations in a three-layered stratified basin. Philos Trans R Soc Lond B Biol Sci 1952. [DOI: 10.1098/rstb.1952.0006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Consider a rectangular basin of length
l
and depth
h
which, in equilibrium, contains three horizontal layers of fluid of different densities
p
1
,
p
2
and
p
3
and of depths
h
1
,
h
2
and
h
3
. (The suffixes 1, 2 and 3 refer to the upper, middle and lower layers respectively.) Let rectangular co-ordinates (
x
,
y
,
z
) be taken with the origin in the upper surface at one end of the basin, the
x
-axis horizontal and the
z
-axis vertically downwards. The motion will be assumed to be two-dimensional and independent of the
y
-co-ordinate.
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80505
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80506
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ADDENDUM. Biol Rev Camb Philos Soc 1952. [DOI: 10.1111/j.1469-185x.1952.tb01394.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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80507
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Kielhorn WV. The Biology of the Surface Zone Zooplankton of a Boreo-Arctic Atlantic Ocean Area. ACTA ACUST UNITED AC 1952. [DOI: 10.1139/f52-015] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Zooplankton samples were taken from the surface zone waters of the central Labrador Sea at International Ocean Station "B" (56° − 30′N., 51° − 00′W.) at weekly intervals throughout one calendar year for the purpose of determining the composition of the zooplankton, the seasonal progression, fluctuations and pertinent physical factors. An attempt was made to correlate the physical and biological factors.Ships of the United States Coast Guard and the Royal Canadian Navy were used as collecting units, and these were provided with nets, samplers and other equipment with which to carry out the shipboard phase of the investigation. Mid-day, 20 minute oblique hauls from 150-0 metres were made with the Clarke-Bumpus plankton sampler using No. 2 and No. 12 mesh silk nets, along with bathythermograph and Secchi disc lowerings. Later in the day, but at least one hour after dark, an open half-metre net 20 minute surface tow was made for additional qualitative data. Bioluminescence records also were obtained at this time.All available physical and biological data pertaining to the area under investigation were examined to provide a basis for comparison.Synopses of the species found in the material are presented individually, including their seasonal occurrence, probable breeding seasons, numerical and economic importance, and values as indicator forms. In all, 61 species in seven phyla, 10 classes and 17 orders are represented.The zooplankton population of the surface zone in the central Labrador Sea is characterized by relatively few species, but at the same time by large numbers of individuals. The plankton consists mainly of Calanus finmarchicus, Thysanoessa longicaudata, Oithona atlantica, Scolecithricella minor, Oikopleura labradoriensis and Eukrohnia hamata. The remainder of the species assume comparatively minor importance in the economy of the region.The main augmentation season was found to occur generally in late summer, although mid-winter breeding was noted for a few animals. The zooplankton of this region was found to be distinctive, being consistently oceanic, but neither true arctic nor true boreal. Definite biological evidence was obtained that indicated the influx of boreal-subtropical surface waters into the area in winter.Extinction coefficients determined from white Secchi disc readings are graphed, as are comparisons between black and white disc readings. It was concluded that the great variations of transparency were caused by fluctuations in the amount and kinds of phytoplankton and detritus in the water, and that the zooplankton density had little effect on water clarity.No direct correlation was noted between the occurrence of bioluminescence and individuin species or planktonic groups, but it was found that the greatest bioluminescence was observed al the summer and fall.
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80508
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EVANS LT. Endocrine relationships in turtles. II. Claw growth in the slider, Pseudemys scripta Troostii. ACTA ACUST UNITED AC 1952; 112:251-63. [PMID: 14903594 DOI: 10.1002/ar.1091120209] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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80509
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80510
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80511
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80512
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80513
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80514
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80515
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80516
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80517
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GUNTER G, HEDGPETH JW, HOOIJER DA, CONNELL CH, CROSS JB. Mass Mortality and Dinoflagellate Blooms in the Gulf of Mexico. Science 1951; 113:250-2. [PMID: 14809302 DOI: 10.1126/science.113.2931.250] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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80518
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Hooijer DA. Mass Mortality and Dinoflagellate Blooms in the Gulf of Mexico. Science 1951. [DOI: 10.1126/science.113.2931.251-b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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80519
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Hooijer DA. Mass Mortality and Dinoflagellate Blooms in the Gulf of Mexico. Science 1951. [DOI: 10.1126/science.113.2931.251.b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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80520
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Connell CH, Cross JB. Response
: Mass Mortality and Dinoflagellate Blooms in the Gulf of Mexico. Science 1951. [DOI: 10.1126/science.113.2931.252.a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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80521
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Hedgpeth JW. Mass Mortality and Dinoflagellate Blooms in the Gulf of Mexico. Science 1951. [DOI: 10.1126/science.113.2931.251.a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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80522
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Connell CH, Cross JB. Response
: Mass Mortality and Dinoflagellate Blooms in the Gulf of Mexico. Science 1951. [DOI: 10.1126/science.113.2931.252-a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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80523
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Hedgpeth JW. Mass Mortality and Dinoflagellate Blooms in the Gulf of Mexico. Science 1951. [DOI: 10.1126/science.113.2931.251-a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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80524
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80525
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80526
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Buell MF, Cantlon JE. A Study of Two Communities of the New Jersey Pine Barrens and a Comparison of Methods. Ecology 1950. [DOI: 10.2307/1931576] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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80527
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Odum EP. Bird Populations of the Highlands (North Carolina) Plateau in Relation to Plant Succession and Avian Invasion. Ecology 1950. [DOI: 10.2307/1931577] [Citation(s) in RCA: 122] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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80528
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80529
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KITCHING JA. Distribution of the Littoral Barnacle Chthamalus stellatus around the British Isles. Nature 1950; 165:820. [PMID: 15423462 DOI: 10.1038/165820a0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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80530
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80531
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Abstract
not available
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80532
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Gessner F. Der Chlorophyllgehalt im See und seine photosynthetische Valenz als geophysikalisches Problem. ACTA ACUST UNITED AC 1949. [DOI: 10.1007/bf02503359] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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80533
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Lynch WF. Acceleration and retardation of the onset of metamorphosis in two species of Bugula from the Woods Hole region. ACTA ACUST UNITED AC 1949; 111:27-53. [DOI: 10.1002/jez.1401110103] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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80534
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80535
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80536
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Kozloff EN. The morphology of Cryptobia helicis leidy, with an account of the fate of the extranuclear organelles in division. J Morphol 1948; 83:253-79. [DOI: 10.1002/jmor.1050830206] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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80537
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80538
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Schopf JM. Should There Be a
Living Metasequoia
? Science 1948. [DOI: 10.1126/science.107.2779.344.b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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80539
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Wicht CL. A STATISTICALLY DESIGNED EXPERIMENT TO TEST THE EFFECTS OF BURNING ON A SCLEROPHYLL SCRUB COMMUNITY. I. PRELIMINARY ACCOUNT. ACTA ACUST UNITED AC 1948. [DOI: 10.1080/00359194809518963] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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80540
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80541
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80542
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80543
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Slifer EH. The effects of xylol and other solvents on diapause in the grasshopper egg; together with a possible explanation for the action of these agents. ACTA ACUST UNITED AC 1946; 102:333-56. [DOI: 10.1002/jez.1401020307] [Citation(s) in RCA: 56] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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80544
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80545
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80546
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Rummell RS. Some Effects of Competition from Cheatgrass Brome on Crested Wheatgrass and Bluestem Wheatgrass. Ecology 1946. [DOI: 10.2307/1932510] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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80547
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80548
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80549
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80550
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