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Articles 3631 - 3660 of 3962

Full-Text Articles in Biology

Review Of Recreational Gill, Haul And Cast Netting In Western Australia., F. B. Prokop Oct 1993

Review Of Recreational Gill, Haul And Cast Netting In Western Australia., F. B. Prokop

Fisheries Management Papers

In this paper the Recreational Netting Committee has addressed an extremely complex and controversial issue in a forthright manner. They have developed a set of management proposals which accommodates recreational netting while recognizing the concerns of non-netters and the general community. The Committee would like to stress that it considers this plan as a package. For example the Committee would be strongly opposed to the considerable operational restrictions contained under Section 5 if there were not a trade-off in terms of a fairer criteria for which estuaries are open as proposed in Section 6.2. Similarly, the Committee would not be …


Management Arrangements For The Southern Demersal Gillnet And Demersal Longline Fishery 1994/95 Season., Southern Demersal Gillnet And Demersal Longline Management Advisory Committee Oct 1993

Management Arrangements For The Southern Demersal Gillnet And Demersal Longline Fishery 1994/95 Season., Southern Demersal Gillnet And Demersal Longline Management Advisory Committee

Fisheries Management Papers

At its meeting of 7 April 1993 the Southern Demersal Gillnet and Demersal Longline Fishery Management Advisory Committee (hereafter called "the Committee) was advised of the Western Australian Fisheries Department's Research Division's concern over the status of shark stocks. All the data available indicate that whiskery sharks are severely over-exploited with stock levels declining by around 10% to 30% of original levels. Current levels of fishing effort are expected to cause the stock to decline further. Gummy sharks have high risk of over exploitation (stock has declined to 40% -50% of original levels. Dusty whaler stocks (bronze whaler) is uncertain …


Chairman's Report To The Minister For Fisheries On Management Recommendations For 1993-94 And 1994-95 Western Rock Lobster Seasons., Rock Lobster Industry Advisory Committee Sep 1993

Chairman's Report To The Minister For Fisheries On Management Recommendations For 1993-94 And 1994-95 Western Rock Lobster Seasons., Rock Lobster Industry Advisory Committee

Fisheries Management Papers

This paper sets out the Rock Lobster Industry Advisory Committee (RLIAC) management recommendations for the 1993/94 and 1994/95 seasons. Currently and during these two years longer term management approaches are being examined separately by the RLIAC.


The Introduction And Translocation Of Fish, Crustaceans And Molluscs In Western Australia., Craig Lawrence Sep 1993

The Introduction And Translocation Of Fish, Crustaceans And Molluscs In Western Australia., Craig Lawrence

Fisheries Management Papers

This paper discusses three possible impacts of introduced and translocated aquatic organisms: 1. Genetic diversity 2. Pathogens 3 Ecosystem Conservation, in relation to costs and benefits to the community and the Western Australian environment.


White-Tailed Deer Habitat Use On Surface-Mined Areas In Eastern Kentucky, Devetta A. Hill Jul 1993

White-Tailed Deer Habitat Use On Surface-Mined Areas In Eastern Kentucky, Devetta A. Hill

Morehead State Theses and Dissertations

A thesis presented to the faculty of the College of Science and Technology at Morehead State University in partial fulfillment of the requirements for the Degree of Master of Science in Biology by Devetta A. Hill on July 2, 1993.


Management Proposals For 1993/94 And 1994/95 Western Rock Lobster Season., Rock Lobster Industry Advisory Committee Jul 1993

Management Proposals For 1993/94 And 1994/95 Western Rock Lobster Season., Rock Lobster Industry Advisory Committee

Fisheries Management Papers

The Rock Lobster Industry Advisory Committee (RLIAC) in reviewing management arrangements for the rock lobster fishery, were concerned with two principle objectives: 1. That the management measures adopted would arrest the ongoing decline in breeding stock and seek to re-establish the number of breeding female rock lobster to levels consistent with known historic safe levels in the fishery. 2. That the management arrangements adopted would properly take into account market requirements in order to maximise returns to fishermen from an appropriate level of catch.


Modelling Avian Distributions Of The Navarrese Region In Northern Spain With A Geographic Information System, Samuel Soret-Garcia Jun 1993

Modelling Avian Distributions Of The Navarrese Region In Northern Spain With A Geographic Information System, Samuel Soret-Garcia

Loma Linda University Electronic Theses, Dissertations & Projects

GIS (Geographic information Systems) technology was used for identifying relations between environmental characteristics and the breeding distributions of nine avian species of the Navarrese region in northern Spain. Data overlays of multiple GIS layers derived the explanatory variables for modelling the breeding distributions from logistic regressions. A spatial autocorrelation analysis was conducted to characterize the distribution patterns and to incorporate spatial factors (neighborhood effects) into their analysis.

All nine patterns analyzed exhibited a high level of spatial autocorrelation. Accordingly, the basic hypothesis of spatial randomness was rejected in favor of spatial clustering for the sample data. The breeding distributions strongly …


A Survey Of Helminths Of Ondatra Zibethicus In Eight States And Four Foreign Countries, Mike P. Lyons May 1993

A Survey Of Helminths Of Ondatra Zibethicus In Eight States And Four Foreign Countries, Mike P. Lyons

McCabe Thesis Collection

The muskrat, Ondatra zibethicus. is a large member of the Order Rodentia and regarded as the United States' most important fur bearing mammal (Abram, 19 69) . Helminths, or parasitic worms, include amongst its members: trematodes (flukes), cestodes (tape worms) and nematodes (round worms). Parasite surveys based on geography and subspecies of the host, Ondatra zibethicus. have pieced together information gaps based on these criteria and enabled investigators to construct an overall picture of helminth parasites in the United States and elsewhere.

The question of helminths in representative host species can be addressed either through necropsy examinations or through literature …


Review Of Bag And Size Limit Proposals For Western Australian Recreational Fishers., F. B. Prokop May 1993

Review Of Bag And Size Limit Proposals For Western Australian Recreational Fishers., F. B. Prokop

Fisheries Management Papers

The Fisheries Department of WA and the Recreational Fishing Advisory Committee (RFAC), which is the peak body representing recreational fishers in WA, have been very pleased with the response to the implementation of two year review of recreational fisheries. Fisheries, RFAC and the fishing community recognise that the two year review was the first step in the continually evolving process of management of recreational fisheries. Since the new bag and size limit regulations were introduced in December 1991, there have been many suggestions for refinement and improvement. This management paper includes the most common and best suggestions for future management. …


Fisheries Management Paper No 53 - Rock Lobster Industry Advisory Committee - Report To The Minister For Fisheries And Management Arrangements For 1992/93, Fisheries Department Of Western Australia May 1993

Fisheries Management Paper No 53 - Rock Lobster Industry Advisory Committee - Report To The Minister For Fisheries And Management Arrangements For 1992/93, Fisheries Department Of Western Australia

Fisheries Management Papers

The Minister for Fisheries announced the 1992/93 fishing season management arrangements for West Coast Rock Lobster Fishery on 11 August 1992. These arrangements arose as a result of the Minister's consideration of the Rock Lobster Industry Advisory Committee's recommendations outlined in Fisheries Management Paper no.46.

Following this announcement, on 28 August 1992, the Western Australian Fishing Industry Council Sub-Committee on rock lobster submitted a range of alternative management proposals.

The Rock Lobster Industry Advisory Committee (RLIAC) met in Perth on the 9 September 1992 at the request of the Minister for Fisheries to further examine and report on management arrangements.


Fat Content Of American Kestrels (Falco Sparverius) And Sharp-Shinned Hawks (Accipiter Striatus) Estimated By Total Body Electrical Conductivity, Shari M. Harden May 1993

Fat Content Of American Kestrels (Falco Sparverius) And Sharp-Shinned Hawks (Accipiter Striatus) Estimated By Total Body Electrical Conductivity, Shari M. Harden

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Total body electrical conductivity (TOBEC) is a noninvasive method for the estimation of lean mass in live subjects. Lipid content can be calculated from the body mass measured and the lean mass estimated from TOBEC. I used live American Kestrels (Falco sparverius) to study the accuracy of this method. TOBEC measurements were compared to actual body content determined by Soxhlet fat extraction using petroleum ether as the solvent. TOBEC estimated 73.7% of the variation in lean mass in a sample of 21 kestrels. The use of restraining devices (Vetrap and cardboard cylinders) altered the TOBEC measurement but only …


The Mayfly Newsletter, Peter M. Grant May 1993

The Mayfly Newsletter, Peter M. Grant

The Mayfly Newsletter

The Mayfly Newsletter is the official newsletter of the Permanent Committee of the International Conferences on Ephemeroptera.


The West Coast Shark Fishery Draft Management Plan., D. A. Hall Apr 1993

The West Coast Shark Fishery Draft Management Plan., D. A. Hall

Fisheries Management Papers

The main purpose of this report is to advance the development of a scheme of management for the commercial shark fishery off the west coast of Western Australia. There is considerable scientific concern over the biological status of commercially important shark stocks in this region, particularly dusky whaler (Carcharhinus obscura), thickskin (Carcharhinus plumbeus) and whiskery sharks (Furgaelus macki).


The South West Beach Seine Fishery Draft Management Plan., D. A. Hall Apr 1993

The South West Beach Seine Fishery Draft Management Plan., D. A. Hall

Fisheries Management Papers

This paper describes the issues in and outlines a proposal for management of the beach seine fishery between Tim's thicket and Cape Beaufort on the south coast. It also proposes management measures for the fishery utilising small mesh gill nets and hand hauled seine nets in the area inside of the 10 metre depth contour.


Live Northern Harrier Entrapped In Ice, Given Harper, Thomas Dunstan Jan 1993

Live Northern Harrier Entrapped In Ice, Given Harper, Thomas Dunstan

Scholarship

No abstract provided.


Influence Of 17-B-Estradiol And Progesterone On The In Vitro Cultured Mouse Preimplantation Embryos, Matthew L. Offutt Dec 1992

Influence Of 17-B-Estradiol And Progesterone On The In Vitro Cultured Mouse Preimplantation Embryos, Matthew L. Offutt

Morehead State Theses and Dissertations

A thesis presented to the faculty of the College of Arts and Sciences at Morehead State University in partial fulfillment of the requirements for the Degree of Master of Science in Biology by Matthew L. Offutt on December 10, 1992.


Southern Nevada Effluent Wetlands: A Proposed Cooperative Venture Between The Bureau Of Reclamation & City Of Las Vegas, Bureau Of Reclamation Nov 1992

Southern Nevada Effluent Wetlands: A Proposed Cooperative Venture Between The Bureau Of Reclamation & City Of Las Vegas, Bureau Of Reclamation

Publications (WR)

Throughout North America there is a growing interest in constructed wetlands, both as relatively inexpensive, low-maintenance systems for removing nutrients from wastewater, and as a means of using municipal wastewater to enhance wildlife habitat and create public use opportunities. Because wetlands appear to have good potential as a component in the overall management of scarce water resources, the Bureau of Reclamation (Reclamation) has undertaken several cooperative research and demonstration projects to evaluate their effectiveness in a variety of local environments. While a number of projects have demonstrated that wetlands can be beneficially employed to improve water quality, few such projects …


The Cockburn Sound Fishery Management Plan. Summary Of Submission And Final Recommendations For Management., A. Millington Oct 1992

The Cockburn Sound Fishery Management Plan. Summary Of Submission And Final Recommendations For Management., A. Millington

Fisheries Management Papers

Identifiable "unit" fisheries in Cockburn Sound are: Beach bait fishing netting Fish set netting Crab netting Mussel diving Line fishing and pot fishing This report recommends measures for the longer term management of these fisheries In particular, that they be managed as limited entry fisheries under Section 32 of the Fisheries Act 1905. Strict entry criteria are proposed for continued access to these fisheries. Rules are proposed for boat replacement. Licence transferability is considered in detail. No decisions to be made on the policy for licence transfers until the final number of participants in each fishery is determined. Owner operation, …


The Mayfly Newsletter, Peter M. Grant Sep 1992

The Mayfly Newsletter, Peter M. Grant

The Mayfly Newsletter

The Mayfly Newsletter is the official newsletter of the Permanent Committee of the International Conferences on Ephemeroptera.


Lek Formation In Sage Grouse: The Effect Of Female Choice On Male Territory Settlement, Robert M. Gibson Mar 1992

Lek Formation In Sage Grouse: The Effect Of Female Choice On Male Territory Settlement, Robert M. Gibson

School of Biological Sciences: Faculty Publications

Previous studies of female choice in sage grouse, Centrocercus urophasianus, have identified two processes that could drive the local clustering of male territories at leks: (1) fidelity of females to previous mating sites (“temporal spillover” hypothesis), and (2) “spatial spillover” of matings from an attractive male to his immediate neighbors (“hotshot” hypothesis). The effects of each process on male territory settlement were investigated using observations of the resettlement of vacant territories and of individual site fidelity during a 7-year field study. The frequency with which vacant territories were resettled both within and between seasons increased with mating success of …


The Mayfly Newsletter, Peter M. Grant Mar 1992

The Mayfly Newsletter, Peter M. Grant

The Mayfly Newsletter

The Mayfly Newsletter is the official newsletter of the Permanent Committee of the International Conferences on Ephemeroptera.


Effects Of Moose Foraging On Browse Availability In New Hampshire Deer Yards, Michael T. Pruss, Peter J. Pekins Jan 1992

Effects Of Moose Foraging On Browse Availability In New Hampshire Deer Yards, Michael T. Pruss, Peter J. Pekins

New Hampshire Agricultural Experiment Station Publications

Food habits of moose (Alces alces) and white-tailed deer (Odocoileus virginianus) overlap in northern New Hampshire during autumn and winter. High moose and deer densities in deer yards, where deer may be confined for extended periods, could result in competition for limited deciduous forage. The purpose of this study was to investigate possible impacts by moose on browse availability in deer yards, and the potential effects on deer. Fifteen deer yards were studied in northern New Hampshire during spring and fall, 1990-91. Unbrowsed and browsed deciduous twigs, and deer and moose pellet groups were counted on 900 permanent plots to …


The Costs Of Female Choice In A Lekking Bird, Robert M. Gibson, Gwendolyn C. Bachman Jan 1992

The Costs Of Female Choice In A Lekking Bird, Robert M. Gibson, Gwendolyn C. Bachman

School of Biological Sciences: Faculty Publications

We investigated the costs of active female choice in sage grouse, Centrocercus urophasianus, a lekking species in which females make repeated, lengthy visits to leks to assess males before mating. Several potential costs were measured by monitoring changes in hens' ranging behavior, time budgets, and encounter rates with predators when they visited leks. Two costs were identified: hens moved further per day and encountered golden eagles, Aquila chrysaetos, more frequently when visiting leks. However, extra travel due to visiting leks increased predicted daily energetic expenditure by only about 1%, and the risk of predation by golden eagles over …


Further Analysis Of Allozyme Variation In The Northern Flicker, In Comparison With Mitochondrial Dna Variation, Stephen D. Fletcher, William S. Moore Jan 1992

Further Analysis Of Allozyme Variation In The Northern Flicker, In Comparison With Mitochondrial Dna Variation, Stephen D. Fletcher, William S. Moore

Biological Sciences Faculty Research Publications

No abstract provided.


The Mayfly Newsletter, Peter M. Grant Oct 1991

The Mayfly Newsletter, Peter M. Grant

The Mayfly Newsletter

The Mayfly Newsletter is the official newsletter of the Permanent Committee of the International Conferences on Ephemeroptera.


The Influence Of 17-B-Estradiol And Tamoxifen On Protein Profiles From In Vitro Cultured Preimplantation Mouse Embryos, Darrin D. Demoss Aug 1991

The Influence Of 17-B-Estradiol And Tamoxifen On Protein Profiles From In Vitro Cultured Preimplantation Mouse Embryos, Darrin D. Demoss

Morehead State Theses and Dissertations

A thesis presented to the faculty of the Department of Biological and Environmental Sciences at Morehead 'State University in partial fulfillment of the requirements for the Degree of Master of Science in Biology by Darrin Lee DeMoss on August 16, 1991.


Distribution Of Sexual Activities Within Estrus Of Dairy Cattle, Donna Durbin Jul 1991

Distribution Of Sexual Activities Within Estrus Of Dairy Cattle, Donna Durbin

Masters Theses & Specialist Projects

Previous studies of dairy cattle have indicated that heifers and cows in hot, cold and moderate weather had different patterns of sexual activities. The purpose of this study was to compare distribution of sexual activities within estrus of dairy cattle. Three groups of lactating cows in hot, cold and moderate weather and a group of heifers in cold weather were observed. Estrus for each individual was divided into 12 equal periods. Sexual activities for 3 and 6 hours before and after estrus were also observed. The numbers of mounts and distribution of total sexual activities was analyzed. Mounts received per …


Mate Choice In Lekking Sage Grouse Revisited: The Roles Of Vocal Display, Female Site Fidelity, And Copying, Robert M. Gibson, Jack W. Bradbury, Sandra L. Vehrencamp Jul 1991

Mate Choice In Lekking Sage Grouse Revisited: The Roles Of Vocal Display, Female Site Fidelity, And Copying, Robert M. Gibson, Jack W. Bradbury, Sandra L. Vehrencamp

School of Biological Sciences: Faculty Publications

In lekking sage grouse (Centrocercus urophasianus), females exhibit relatively unanimous mate choice for particular males, but a satisfactory explanation for this unanimity has been elusive. We present analyses of mating distributions from two leks over 4 years that provide evidence for female choice based on differences in vocal display performance of males, the locations at which hens mated in the previous year, and the choices of other females (copying). The unanimity of female choice varied markedly among leks and years in correlation with changes in the mean numbers of hens that mated at the same time and hence …


The Future For Recreational Fishing Final Report Of The Recreational Fishing Advisory Committee, Recreational Fishing Advisory Committee May 1991

The Future For Recreational Fishing Final Report Of The Recreational Fishing Advisory Committee, Recreational Fishing Advisory Committee

Fisheries Management Papers

This report discusses: What Recreational fishing means to Western Australia's estimated 300,000 fishers. Conservation and equality in catch sharing was at the heart of the Committee's investigations into developing strategies for the future management of important recreational fish stocks.


The Mayfly Newsletter, Peter M. Grant Mar 1991

The Mayfly Newsletter, Peter M. Grant

The Mayfly Newsletter

The Mayfly Newsletter is the official newsletter of the Permanent Committee of the International Conferences on Ephemeroptera.