Life Sciences Commons^™

Comparison Of An Improved Plankton Sampler To The Standard Conical Plankton Net, Ronald S. Schmidt

OES Theses and Dissertations

A comparison of field and tank tests between the standard conical plankton net and an improved version of a plankton sampler is presented. The improved sampler was shown to filter larger quantities of water than the standard net without having the filtration efficiency reduced below 85%. The improved sampler was also shown to capture an increased number of plankton per volume sampled, as a result of eliminating increased avoidance activity by zooplankton. It was not shown that. the improved sampler capture either larger maximum sizes of zooplankton or additional species.

Weed Seed Ecology., A. H. Cheam

Experimental Summaries - Plant Research

Emergence of weed seedlings from different soil depths. 82MT49, Mt Barker Research Station. 83MT4, Mt Barker Research Station. 82NR12, Northam Research Station. 83NR2, Northam Research Station. 82C37, Chapman Research Station. 83C3, Chapman Research Station. Longevity of buried weed seeds. 82MT50, Mt Barker Research Station. 83MT5, Mt Barker Research Station. 82NR13, Northam Research Station. 83NR3, Northam Research Station. 82C38, Chapman Research Station. 83C4, Chapman Research Station. Emergence of weed seedlings in relation to soil type and cultivation. 82PE32, South Perth. Emergence and fate of weed seeds in different depths of cultivated and undisturbed compacted soil. 84C49, Chapman Research Station. 84MT62, Mt …

The Ecology Of Skeleton Weed In Western Australia, Afghan Thistle Ecology, Reproductive Biology Of Gorteria Personata., J. Dodd

Experimental Summaries - Plant Research

1. The ecology of skeleton weed (Chondrilla juncea L.) in Western Australia. Seed production and water use in the glasshouse, 84PE18. Seed production and water use by field-grown skeleton weed, 84BA17, 84BA18. Seedling root growth 85PE54 2. Afghan thistle (Solanum hoplpetalm) ecology Winter rosette survival 84N050. Regenerative ability of S. hoplopetalum, 85PE51. 3. Reproductive biology of Gorteria personata. Gorteria personata Floral biology Seed content of burrs

Doublegee- Seed Dormancy And Longevity, Lupins- Pre And Post Emergence Grass Control, Radish Control, Peas- Metribuzin Bladex, Pre And Post Emergence Grass Control And Post Emergence Weed Control., D. J. Gilbey, R. Klemm

Experimental Summaries - Plant Research

Doublegee seed longevity x depth. Effect of burial on longevity of doublegee achenes, 76C9, 76KA8. Lupins, Peas, pre-emergence grass control cynch, 85BA42, 85WH53, 85BA43, 85BA44, 85BA45, 85WH60, 85N078, 85N078, 85KA61, 85JE18, 85ME54, 85KA86, 85JE66, 85KA88, 85 KA 92, 85KA85, 85ME52, 85ME53, 85KA87, Weed control in peas - metribuzin - 84ME41

Capeweed, Radish, Wild Oats, Sarsaparilla, Four O'Clock, Saffron Thistle, Onion Weed, Carnation Weed, J. R. Peirce, B J. Raynor

Experimental Summaries - Plant Research

85WH59, Capeweed time of spraying. Demonstration, capeweed, oil additions. 85N080, radish, nozzle angles x volumes. 85N081, radish, nozzle angles x rates. 85N082, wild oats, nozzle angles x volumes. 85N083, wild oats, nozzle angles x Rates. 85ME1, sarsaparilla, chemicals. 85N075, sarsaparilla, chemicals. 85TS26, 85ME48, 85ME104, 85GE29, saffron thistle, control with ear spraying in pasture. 85TS41, 85GE29a, saffron thistle, chemical control of seed set, 85TS27, saffron thistle, grazing trial. 85GE36, onion weed, chemicals in pasture. 85GE35, carnation weed, chemicals in pasture.

Efficiency Of Cinch On Brome Grass Control., J. E. Holmes., R L. Thomas

Experimental Summaries - Plant Research

85GE34, 85A11, 85A12,

The Ecology Of Skeleton Weed (Chondrilla Juncea) In Western Australia, Demographic Aspects Of Wild Radish (Raphanus Raphanistrum) Populations In Lupin Crops And Identification Of Populations Of Mesquite (Prosopis Spp) From The West Pilbara Region., F. D. Panetta

Experimental Summaries - Plant Research

To determine what forms of skeleton weed are present in Western Australia and to map their respective distribution. To determine, on the basis of climatic characteristics, the suitability of various areas within the Western Australian wheatbelt for infestation by skeleton weed. To determine the amounts, viability and dormancy status of seeds produced by field-grown plants during summer and autumn months. To determine the effectiveness of conventional tillage practices in limiting establishment of skeleton weed seedlings. To determine the regularity with which seedling establishment occurs under field conditions and how the probability of establishment is affected by the time of germination. …

Serradella Trial Programme., L. Cransberg

Experimental Summaries - Plant Research

Serradella Line Evaluation - Stage 2 85A155, Serradella Line Evaluation - Stage 3 85A156, Serradella Establishment - Time of Seeding x Seeding Rate 85A157, Serradella Establishment - Pod Undersowing (Variety x Rate) 85A158, Serradella Establishment - Pod Undersowing (Inoculation) 85A159.

Farm Systems Research Involving New Pasture Species., C. W. Thorn, C. K. Revell

Experimental Summaries - Plant Research

The effect of grazing on Circle Valley medic production. Effect of rotations on M. polyrnorpha production and persistence and cereal crop yields, 84 KA 35, 85 LG 44, 84 KA 37 Effect of tillage x gypsum x nitrogen on continuous cereal production, 84 KA 28. Effect of gypsum x seeding rate on the seed yield of three pasture legumes. Pasture species tolerance to grass and broadleaf herbicides. Undersowing cereal crops with burr medic.

Long Term Rotation Trials, Lupins: Wheat Rotation., I. Rowland, W. Hawkins

Experimental Summaries - Plant Research

Long term rotation trials 66M29, 67C13, 67N4, 68E5, 65SG5, 73SG16, Lupins : wheat rotation 80TS3, 82TS2, 82M26.

Phosphorus Nutrition Of High Rainfall Pastures, Sulphur Nutrition Of Pastures And Sulphur - Low Rainfall., J S. Yeates, D. M. Deeley, M. F. Clarke, R. A. Deyl, G. T.B. Cockerton

Experimental Summaries - Plant Research

Phosphorus nutrition of high rainfall pastures - Peel Harvey Estuarine System Study and related phosphorus work. (1) Sources, rates, time of application of phosphorous on high rainfall pastures. 81AL5, 81AL6, 82AL10, 82HA32, 83HA26, 83HA27. (2) P sources and rates on sandy soils of the high rainfall areas. 84AL33, 84AL34, 84HA18, 84HA25. (3) Maintenance rate of P on pastures on sandy soils. 84AL32, 84HA17, 84HA24, 84 HA28. Sulphur nutrition of pastures A. Sulphur - high rainfall (2684 EX/4054EX) (1) Sources, rates, time of application of sulphur to pastures. 80AL4, 80AL4B (2) S sources and rates on pastures on sandy soils of …

Soil Acidity In The Eastern Wheatbelt., W. Porter, S. Carr, P. Bourne

Experimental Summaries - Plant Research

Effect of profile acidity on nutrient and water use by wheat, 85M48. Effect of liming a wodjil soil prile on lupin production, 82ME10 and 82M5 . Lime banding in acid subsoils for wheat, 81M54. Liming topsoil. Rates of lime on wheat, 80M30. Residual value of lime (lupins 1985) 80M31. Survey Survey of extremely poor eastern wheatbelt yellow earth soils, 85ME92

Root And Foliar Diseases Of Wheat On Sandplain In The Geraldton Region., J. Wilson

Experimental Summaries - Plant Research

A project funded by Wheat Industry Research Council and Wheat Industry Research Committee of W.A. Interactions between stubble, rotation, ripping and nitrogen, ECRS, 85C53. The effect of type of cultivation implement, and time of cultivation, ECRS, 85C54. The effect of fumigation, ECRS, 85C91. Residual ripping responses from 1984, 84C15.

Stubble Retention Effects On Soil Water Storage And Yield., D. Tennant

Experimental Summaries - Plant Research

Merredin Research Station on red brown earth soil type, 84M1, 84M5. Summer data. Winter data.

Long Term Minimum Tillage Investigations, Stubble Management Techniques, Deep Ripping And Seeding Machine Comparisons., R. J. Jarvis, L. G. Butcher, L. D.J. Smith

Experimental Summaries - Plant Research

77 A 16, red/brown sandy loam. 77 WH 17, yellow clayey-sand (Wongan loamy sand). 77 M 13, red sandy clay loam (salmon gum, gimlet). 78 M 25, Yellow acid loamy sand (Wodgil). 77 Mt 15 Gravelly loamy sand/sandy loam - forest soil 77 E 18, fine white sand over fine sandy clay. 77 A 43, Brown loamy sand/sandy loam - Jam country.77 WH 88, Grey loamy sand over gravel at 50 cm - Elphin soil series – Mallee. 77 M 56, Red sandy clay loam - Salmon Gum, Gimlet. 82 M 35, Loamy sand/sandy loam – Mallee. 77 E 52, …

A New Marine Genus Of The Maera Group (Crustacea: Amphipoda) From Belize, James Darwin Thomas, J. L. Barnard

Marine & Environmental Sciences Faculty Articles

A new genus and species, Dumosus atari of the Maera group from coral rubble at Belize is described. It is related to Gammarella and is probably cryptic. The eyes are reduced. Dumosus differs from Gammarella in the loss of medial setation on the maxillae, reduction of article 3 on the mandibular palp, loss of article 2 on the outer ramus ofuropod 3, and in the loss of major spination on the plates of maxilla I and the maxilliped; in contrast to Gammarella, Dumosus retains the plesiomorphic uropod 3 typical of the Maera-group.

Two New Species Of Two New Gammaridan Genera (Crustacea: Amphipoda) From The Florida Keys, James Darwin Thomas, J. L. Barnard

Marine & Environmental Sciences Faculty Articles

Two new species of the new genera Anamaera (A. hixom) and Spathiopus (S looensis), both belonging to the section Gammarida of Amphipoda, are described from the Florida Keys. Anamaera is a new genus close to Maera, Ceradocus, and Ceradomaera, but has an unique combination of minor character expressions. Males of Spathiopus have an unusual paddle-shaped antenna 2 but otherwise Spathiopus appears to be an apomorph of Elasmopus.

The Effect Of Dispersed Oil On The Calcification Rate Of The Reef-Building Coral Diploria Strigosa, Richard E. Dodge, A. H. Knap, Sheila C. Wyers, H. R. Frith, T. D. Sleeter, S. R. Smith

Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures

Hermatypic corals represent environmentally and economically important components of the reef ecosystem. Oil spills and clean-up operations in reef areas are potential sources of pollution impact. This paper presents an evaluation of the calcification rate of specimens of the reef-building coral Diploria strigosa in response to 24 hour treatments of chemically dispersed oil at concentrations of 20 ppm. The concentrations and durations were chosen to represent a scenario of a short-term oil spill treated with dispersant passing over a coral reef.

Calcification rates were determined by the buoyant weight technique at several day intervals for up to 29 days following …

U.S./Japanese Fishery Relations: Reflections On The Past And The Unsettled Future, Matthew Axel

Theses and Major Papers

U.S.-Japan fisheries history spans over a half-century of controversy. A variety of developments have taken place over this period from past to present illustrating this point. This paper will present this subject in three parts, corresponding to the historical developments that have taken place. The saga begins with U.S. post-World War II aid in rebuilding the Japanese tuna, whaling and salmon fleets. Round two examines the rapid expansion of the Japanese utilization of Alaska pollock and the development of the surimi trawlers in the early 1960s. Finally, round three, which will encompass the majority of the subject matter discussed, begins …

The Trinidad And Tobago/Venezuela Fishing Agreement, Zaleena K. Chin-Yuen-Kee

Theses and Major Papers

The twin-island Republic of Trinidad and Tobago is situated adjacent to the Republic Of Venezuela such that at one point Trinidad is merely seven miles off the northeast coast of Venezuela. Fishing activities of nationals of each country in the waters of the other are therefore common and often lead to conflict. In an attempt to solve the fishing problem a fishing agreement was negotiated. It came into force in 1978 and expired in 1984 whereupon negotiations commenced once more in an attempt to achieve new accord. The fishing industries of both countries and the conflicts which led to the …

Interstate Fisheries Management Problems: The Case Of Striped Bass, Richard Randall Schneider

Theses and Major Papers

The striped bass (Morone saxatilis), or rockfish, fishery has been important both commercially and recreationally for decades along the Atlantic seaboard. In recent years, though, the fishery has undergone a serious decline and, as a result, has elicited considerable public concern. Although specific reasons for the decline have not been pinpointed, it is clear that inconsistent management practices within the range of striped bass have done little to help the fishery's condition. An anadromous species, striped bass spawn in the fresh water reaches of estuaries, after which many of the individuals return to the coastal ocean. In the Atlantic, the …

Biology Of The Antarctic Krill (Euphausia Superba) And Fisheries Management Under The Convention On The Conservation Of Antarctic Marine Living Resources, Randa Ali Mansour

Theses and Major Papers

Interest in the development of a commercial fishery for Antarctic krill, the lack of a legal regime to govern and promote rational exploitation of Antarctic living resources, and a desire to avoid future conflicts between claimants and non-claimants regarding the control of an Antarctic marine fishery, as well as the desire to set a precedent for management and exploitation of non-living resources were incentives for the negotiation of the Convention on the Conservation of Antarctic marine Living Resources (CCAMLR). Furthermore, the Antarctic Treaty Consultative parties wished to maintain and solidify their control and enhance their collective legitimacy in the Antarctic …

The New England Fishing Industry: A Case For Altering Conditions Of Competition In Both The Fishery And In The Market, William Joseph Brennan

Theses and Major Papers

The New England fishing industry is presented in detail including an historical review, a discussion of current difficulties, and an examination of the public policy dilemma between resource conservation and industry promotion. Continuing efforts to revitalize the United States fishing industry are discussed and underlying problems that have had a negative impact upon the New England industry are outlined. Finally, an alternative public policy approach is developed which addresses fundamental difficulties in the new England region. This approach calls for an elimination of federal financial assistance to the fishing industry and a reduction in the amount of fishery imports reaching …

Premium Prices For Quality Fish: A Case Study Of The F/V Odin, John Sackton

Theses and Major Papers

During 1982, the F/V ODIN, a fishing vessel from the Port of New Bedford, participated in a program to improve fish quality on board through use of innovative fish handling techniques. The captain and crew hoped to sell higher quality fish at a premium price. This thesis examines the prices the F/V ODIN received prior to participating in this experiment, the price differentials the vessel actually received for landing higher quality fish, and the impact of the program on the prices received by the ODIN following the project. Overall, the ODIN received a price premium equal to 7.2% of the …

Cooperatives: Their Effectiveness And Limitations For Small-Scale Fisheries Development, Hiroaki Yonesaka

Theses and Major Papers

Increased experience in fisheries cooperatives of developing countries has called into question a long-held presumption about their desirability and feasibility. In this context, this study attempts to reformulate the cooperative approach for small-scale fisheries in a realistic policy framework. First, past failures of fisheries cooperatives are analyzed from three different angles: the uniqueness of the fishing industry, systems intrinsic to the cooperative, and development policy. Second, various possibilities of building viable cooperatives are explored by introducing two key concnpets: the strategic option and the operational option. On the one hand, the strategic option implies that it is imperative to integrate …

The Vertical Distribution And Feeding Chronology Of Larval Bear Lake Sculpin (Cottus Extensus) In Bear Lake, Utah-Idaho, D. Neverman Devroy, Wayne A. Wurtsbaugh, S. Ohlhorst

Watershed Sciences Faculty Publications

Preliminary sampling in Bear Lake, Utah/Idaho, with bottom trawls and larval fish nets indicate