Open Access. Powered by Scholars. Published by Universities.®

Ecology and Evolutionary Biology Commons™

Open Access. Powered by Scholars. Published by Universities.®

Population Biology

Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 3001 - 3030 of 3791

Full-Text Articles in Ecology and Evolutionary Biology

Review Of Recreational Take Of Coral In Western Australia. A Discussion Paper., Department Of Fisheries Oct 2002

Review Of Recreational Take Of Coral In Western Australia. A Discussion Paper., Department Of Fisheries

Fisheries Management Papers

This discussion paper has been prepared by the Department of Fisheries (Western Australia) to address the issue of recreational collection of coral in coastal waters of Western Australia. The paper describes: • popular coral locations in WA; • management issues associated with the recreational collection of corals; • management objectives and strategies as possible options to address the issue of recreational collection of corals; and • seeks public input on the proposed management objectives and strategies.


Benthic Biological Monitoring Program Of The Elizabeth River Watershed (2001) With A Study Of Paradise Creek, Daniel M. Dauer Oct 2002

Benthic Biological Monitoring Program Of The Elizabeth River Watershed (2001) With A Study Of Paradise Creek, Daniel M. Dauer

Elizabeth River Reports

Executive Summary

A study of the macrobenthic communities of the Elizabeth River watershed was initiated in summer 1999. This report presents the data from the third year of sampling in 2001. The three objectives of the Benthic Biological Monitoring Program of the Elizabeth River watershed are: (1) To characterize the health of the tidal waters of the Elizabeth River watershed as indicated by the structure of the benthic communities. ( 2) To conduct trend analyses on long-term data at 14 fixed-point stations to relate temporal trends in the benthic communities to changes in water and/or sediment quality. Trend analyses will …


Recruitment Variability Of Atlantic Croaker, Micropogonia Undulatus, With Observations On Environmental Factors, Sumalee Hoskin Oct 2002

Recruitment Variability Of Atlantic Croaker, Micropogonia Undulatus, With Observations On Environmental Factors, Sumalee Hoskin

Biological Sciences Theses & Dissertations

I examined entrance patterns of Atlantic croaker, Micropogonias undulatus by comparing the abundance, length, age and growth rates, of larvae as they entered Oregon and Ocracoke Inlets, NC. These biological factors were then compared against environmental factors to assess the influence the physical environment has on recruitment variability. Entrance abundance into Oregon Inlet was an order of magnitude higher than abundance into Ocracoke Inlet. However, the difference was influenced by three peak events in Oregon Inlet and non-parametric tests found no difference in median abundance between the two inlets. Mean standard length was smaller at Oregon Inlet than Ocracoke Inlet …


The Tadpole Of Proceratophrys Avelinoi (Anura: Leptodactylidae), Rafael O. De Sá, José A. Langone Sep 2002

The Tadpole Of Proceratophrys Avelinoi (Anura: Leptodactylidae), Rafael O. De Sá, José A. Langone

Biology Faculty Publications

The genus Proceratoprhys is poorly known. It consists of 14 currently recognized species (Frost, 2000) of medium-sized frogs distributed from northeastern Argentina and Paraguay to southeast Amazonia (Rondonia State), eastern and southern Brazil Proceratophrys avelinoi was described from Misiones, Argentina (Mercadal de Barrio and Barrio, 1993). The larval stage of this species is unknown. Herein, we describe the tadpole and the characteristics of the internal oral anatomy of P. avelinoi using scanning electron microscopy (SEM).


Reseeding Of Grazing Gastropods And Bivalves Into The Marine Environment In Western Australia, Jane Borg Aug 2002

Reseeding Of Grazing Gastropods And Bivalves Into The Marine Environment In Western Australia, Jane Borg

Fisheries Management Papers

The Department of Fisheries does not want to embark on what is ‘new territory’ in Western Australia without a policy framework to define what is to happen, why it is to happen, and what will happen if the project does or does not succeed. This paper therefore attempts to do three things. 1. It sets in place accepted definitions of reseeding and stock enhancement within the general context of fisheries management in Western Australia. 2. It discusses the policy issues associated with reseeding grazing gastropods and bivalves into the natural environment. 3. It proposes a framework or process to be …


Pterourus Appalachiensis (Papilionidae: Papilioninae), A New Swallowtail Butterfly From The Appalachian Region Of The United States, Harry Pavulaan, David M. Wright Jun 2002

Pterourus Appalachiensis (Papilionidae: Papilioninae), A New Swallowtail Butterfly From The Appalachian Region Of The United States, Harry Pavulaan, David M. Wright

The Taxonomic Report of the International Lepidoptera Survey

A new univoltine species of Tiger Swallowtail, Pterourus appalachiensis, is described from the southern Appalachian Mountain region of the eastern United States. This distinct swallowtail has remained unrecognized by lepidopterists since the description of its sympatric congener Pterourus glaucus (Linnaeus) in 1758. Historical accounts of Tiger Swallowtails from this region pertain specifically to glaucus and cannot be attributed to this new species. Morphology, voltinism, phenology, distribution, and behavioral traits indicate species level status of appalachiensis. Although appalachiensis shares several phenotypic characters with the recently elevated species canadensis (Rothschild & Jordan), preliminary mitochondrial DNA analysis indicates that appalachiensis is …


The Future Of Stock Enhancements: Lessons For Hatchery Practice From Conservation Biology, Culum Brown, Rachel L. Day Jun 2002

The Future Of Stock Enhancements: Lessons For Hatchery Practice From Conservation Biology, Culum Brown, Rachel L. Day

Aquaculture Collection

The world’s fish species are under threat from habitat degradation and over-exploitation. In many instances, attempts to bolster stocks have been made by rearing fish in hatcheries and releasing them into the wild. Fisheries restocking programmes have primarily headed these attempts. However, a substantial number of endangered species recovery programmes also rely on the release of hatchery-reared individuals to ensure long-term population viability. Fisheries scientists have known about the behavioural deficits displayed by hatchery-reared fish and the resultant poor survival rates in the wild for over a century. Whilst there remain considerable gaps in our knowledge about the exact causes …


Discussion Paper : The Translocation Of Brown Trout (Salmo Trutta) And Rainbow Trout (Oncorhynchus Mykiss) Into And Within Western Australia., Western Australian Fisheries Jun 2002

Discussion Paper : The Translocation Of Brown Trout (Salmo Trutta) And Rainbow Trout (Oncorhynchus Mykiss) Into And Within Western Australia., Western Australian Fisheries

Fisheries Management Papers

This discussion paper has been prepared to assist in the assessment of the possible impact of the translocation of brown trout (Salmo trutta) and rainbow trout (Oncorhynchus mykiss), into and within Western Australia, for the purposes of recreational stock enhancement in public waters, non-commercial aquaculture on private properties and commercial aquaculture. In assessing the translocation of any aquatic species, economic and social benefits must be balanced with biological and environmental risks.


Fisheries Envrionmental Management Plan For The Gascoyne Region. Draft Report., Dept. Of Fisheries Jun 2002

Fisheries Envrionmental Management Plan For The Gascoyne Region. Draft Report., Dept. Of Fisheries

Fisheries Management Papers

This draft document for the Gascoyne Region is the first in the series of Environmental Management Plans. . It complements the recently released Fisheries Environmental Management Review of the Gascoyne Region (2000).


The Diversity And Abundance Of Parasites In Age Groups Of Yellow Perch In Lake Bemidji, Mn Applied To A Whittaker Curve, Kelly J. Main May 2002

The Diversity And Abundance Of Parasites In Age Groups Of Yellow Perch In Lake Bemidji, Mn Applied To A Whittaker Curve, Kelly J. Main

Honors Capstones

Capstone submitted as a graduation requirement for the BSU Honors Program.


Name-Bearing Types And Taxonomic Synopsis Of Three Lycaenid Butterfly Taxa From Western Canada (Lepidoptera: Lycaenidae), Norbert G. Kondla, Crispin S. Guppy May 2002

Name-Bearing Types And Taxonomic Synopsis Of Three Lycaenid Butterfly Taxa From Western Canada (Lepidoptera: Lycaenidae), Norbert G. Kondla, Crispin S. Guppy

The Taxonomic Report of the International Lepidoptera Survey

We clarify which of two designated lectotypes of Chrysophanus florus Edwards, 1884 is valid. We also show that the putative holotype of Plebeius saepiolus insulanus Blackmore, 1920 is actually a lectotype. A valid neotype designation for Lycaena saepiolus amica Edwards, 1863 is provided. Publication dates are corrected and we also briefly review the various taxonomic interpretations and distributions that appear in the literature with respect to these taxa.


Processes For The Allocation, Reallocation And Governance Of Resource Access In Connection With A Framework For The Future Management Of Fisheries In Western Australia, Government Of Western Australia Department Of Fisheries May 2002

Processes For The Allocation, Reallocation And Governance Of Resource Access In Connection With A Framework For The Future Management Of Fisheries In Western Australia, Government Of Western Australia Department Of Fisheries

Fisheries Management Papers

This paper outlines the issues associated with developing a framework to deal explicitly with the allocation, reallocation and the governance of access to the fisheries resources of Western Australia.


Ecology Of The Missouri River. Progress Report, Dingell-Johnson Project F-75-R-19, Supplement 1- Missouri River Creel Survey, Camp Creek To Kansas State Line, 31 March Through 12 October 2001, Gerald Mestl May 2002

Ecology Of The Missouri River. Progress Report, Dingell-Johnson Project F-75-R-19, Supplement 1- Missouri River Creel Survey, Camp Creek To Kansas State Line, 31 March Through 12 October 2001, Gerald Mestl

Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts

This report describes Missouri River activities and results related to a channelized Missouri River creel survey conducted from 31 March through 12 October 2001. This is the second of a planned annual creel survey to be conducted on alternating sections of the channelized Missouri River to measure changes in recreational fishing activity, especially those changes due to large scale habitat restoration efforts. Future reports will contain additional analyses of these data. Anglers spent over 22,000 hours fishing the Missouri River from Camp Creek (rkm 883.5) to the Kansas state line (rkm 790.2) during the survey period. Effort peaked during the …


1080 Summary Information, Department Of Agriculture, Western Australia, Department Of Conservation And Land Management, Western Australia, Department Of Health, Western Australia May 2002

1080 Summary Information, Department Of Agriculture, Western Australia, Department Of Conservation And Land Management, Western Australia, Department Of Health, Western Australia

Biosecurity research reports

Fluoroacetate, the active ingredient of 1080, occurs naturally in toxic plants in Australia, South Africa, and South America. Manufactured I080 underpins most vertebrate pest control programs in Australia and New Zealand. Fluoroacetate occurs naturally in about 40 plant species in Australia with most of these plants restricted to the south-west of WA.

I080 was introduced to rabbit control programs in the early 1950s and therefore has a long history of proven effectiveness and safety in Australia. There have been few repo1ted problems associated with human safety, environmental persistence, bioaccumulation or impact on populations of non-target species.

In particular, I080 baits …


Reproduction Of Black Drum, Pogonias Cromis, From The Chesapeake Bay Region, Brian K. Wells, Cynthia M. Jones Apr 2002

Reproduction Of Black Drum, Pogonias Cromis, From The Chesapeake Bay Region, Brian K. Wells, Cynthia M. Jones

Virginia Journal of Science

Ovaries of black drum, Pogonias cromis, collected from the Chesapeake Bay region in 1992, were used to describe reproductive strategy and fecundity. Histological examination showed that black drum spawn in the Chesapeake Bay region from April through early June. Distributions of oocyte diameter showed distinct oocyte-developmental groups indicating that Chesapeake Bay black drum are group-synchronous batch spawners. Female black drum are extremely fecund ranging from 414,000 to 3,736,000 hydrated oocytes (mean = 1,389,000) per batch with a spawning periodicity of 3.8 days. Estimates of spawning strategy, spawning periodicity, and batch fecundity for black drum from the Chesapeake Bay region …


Draft Bycatch Action Plan For The Shark Bay Prawn Managed Fishery (Full Report), Jo Bunting Apr 2002

Draft Bycatch Action Plan For The Shark Bay Prawn Managed Fishery (Full Report), Jo Bunting

Fisheries Management Papers

Two versions of the draft Bycatch Action Plan for the Shark Bay Prawn Managed Fishery have been released for public comment. The ‘Full Report’ (this document - Fisheries Management Paper No. 147) is a comprehensive version of the plan containing detailed rationale and justification for the objectives and actions proposed in the plan. The Full Report also provides detailed background information regarding issues such as the natural environment in Shark Bay, current management arrangements within the prawn fishery and existing information on bycatch. A shorter ‘Summary Report’ is also available for comment. The Summary Report (Fisheries Management Paper No. 148) …


Draft Bycatch Action Plan For The Shark Bay Prawn Managed Fishery (Summary Report), Jo Bunting Apr 2002

Draft Bycatch Action Plan For The Shark Bay Prawn Managed Fishery (Summary Report), Jo Bunting

Fisheries Management Papers

The Department of Fisheries invites people to make a submission on the issues and recommendations of this report - Draft Bycatch Action Plan for the Shark Bay Prawn Managed Fishery. This draft plan has been prepared by the Department of Fisheries' Fish and Fish Habitat Protection Program. Two versions of the draft Bycatch Action Plan for the Shark Bay Prawn Managed Fishery have been released for public comment. The ‘Summary Report’ (this document - Fisheries Management Paper No. 148) provides a brief summary of the background information used in the development of the plan and focuses on its objectives and …


Fisheries Management Report No. 6 - Proceedings Of Marron Farming Open Day 2002, Greg B. Maguire Apr 2002

Fisheries Management Report No. 6 - Proceedings Of Marron Farming Open Day 2002, Greg B. Maguire

Fisheries Published Reports

The marron industry is of considerable importance to the Department of Fisheries, being one of the older aquaculture industries in Western Australia, and one that accounts for around half the aquaculture licence holders in the State. While it has not grown as quickly as many hoped in the past, in 2000/01, some 52.2 tonnes of marron were produced, worth $1.18 million at the farm gate.

It is regionally significant, particularly in the south-west, and depending on appropriate site selection, has considerable potential in other areas. Farms are distributed from near Geraldton to around Bremer Bay, with additional interest around Esperance. …


Development Of Diagnostic Approaches To Determine Sources Of Anthropogenic Stress Affecting Benthic Community Conditions In The Chesapeake Bay, Daniel M. Dauer, Michael F. Lane, Roberto J. Llansó Apr 2002

Development Of Diagnostic Approaches To Determine Sources Of Anthropogenic Stress Affecting Benthic Community Conditions In The Chesapeake Bay, Daniel M. Dauer, Michael F. Lane, Roberto J. Llansó

Benthic Applications

Benthic macrofauna are an important component of estuarine ecosystems. These organisms are a food source for higher trophic levels including fishes and crabs (Virnstein 1977, 1979; Holland et al. 1980; Dauer et al. 1982) and birds (Botton 1984; Quammen 1984). Benthic macrofauna affect both the physical and chemical properties of the sediment and the overlying water column (e.g., Rhoads and Young 1970; Rhoads 1973; Aller 1978, 1980), influence nutrient cycling (Rowe et al 1975; Zeiteschel 1980; Flint and Kamykowski 1984), and are capable of directly controlling phytoplankton biomass in the water column (Cleorn 1982; Officer et al 1982; Cohen et …


Draft Plan Of Management For The Proposed Miaboolya Beach Fish Habitat Protection Area., Department Of Fisheries Western Australia Mar 2002

Draft Plan Of Management For The Proposed Miaboolya Beach Fish Habitat Protection Area., Department Of Fisheries Western Australia

Fisheries Management Papers

The aims of the proposal outlined in this draft management plan is to protect and rehabilitate the aquatic habitat of Miaboolya Beach, the associated mangrove ecosystem, and involve the community in their management.

By setting the area aside as a FHPA, the Department of Fisheries will establish a framework to promote and actively conserve all the habitats within the Miaboolya system, as described in Section 3 of this document.


Policy For The Implementation Of Ecologically Sustainable Development Fisheries And Aquaculture Within Western Australia, W. J. Fletcher Mar 2002

Policy For The Implementation Of Ecologically Sustainable Development Fisheries And Aquaculture Within Western Australia, W. J. Fletcher

Fisheries Management Papers

The purpose of this ESD policy is to outline a way forward by showing in a practical manner: • how the ESD principles will be interpreted and applied within the fisheries context generally and within the Department of Fisheries specifically, • the conceptual framework that will be used to assess performance against ESD principles, • the methods for reporting on and auditing this performance, and • how these principles and the framework relate to other relevant state, national and international treaties and instruments.


A Role For Natural Resource Social Science In Biodiversity Risk Assessment, Philip J. Nyhus, Frances R. Westley, Robert C. Lacey, Philip S. Miller Jan 2002

A Role For Natural Resource Social Science In Biodiversity Risk Assessment, Philip J. Nyhus, Frances R. Westley, Robert C. Lacey, Philip S. Miller

Faculty Scholarship

Biologists have made considerable progress in developing realistic simulation models to predict extinction risks for threatened species. Social scientists have to date had a more limited role in these efforts. This limited involvement comes despite the growing acknowledgment by population biologists and simulation modelers that this additional input is necessary for these models to accurately reflect the impact of humans and human-dominated landscapes on wildlife populations. We argue that collaborations among social and biological scientists can provide unparalleled opportunities to develop new conceptual and simulation tools for biodiversity risk assessment. One challenge is that while the value of interdisciplinary research …


Determining The Genetic Distances Between Sub-Populations Of Aneides Aeneus In The Westvāco Wildlife And Ecological Research Forest, Andrew Nicholas Johnson Jan 2002

Determining The Genetic Distances Between Sub-Populations Of Aneides Aeneus In The Westvāco Wildlife And Ecological Research Forest, Andrew Nicholas Johnson

Theses, Dissertations and Capstones

Aneides aeneus, the Green Salamander, is a plethodontid species ranging from southern Pennsylvania to central Alabama and from eastern Mississippi to Maryland. Populations of Green Salamanders most often inhabit cliffs and rocky outcrops which are moist but not wet and shaded. The animal is listed as a species of special concern by the West Virginia Division of Natural Resources Wildlife Diversity Program. Genetic and reproductive isolation due to strict habitat preferences of the Green Salamander could be a factor in the decline of the species. Seventeen tissue samples were retrieved from five sites within the Westvāco Wildlife and Ecosystem …


Canis Lupus Cosmopolis: Wolves In A Cosmopolitan Worldview, William S. Lynn Jan 2002

Canis Lupus Cosmopolis: Wolves In A Cosmopolitan Worldview, William S. Lynn

Human and Animal Bonding Collection

The subject of wolf recovery in North America sparks heated controversy, both for and against. This paper explores how this subject is informed by cosmopolitan worldviews. These worldviews pull nature and culture into a common orbit of ethical meaning, with implications for the normative relationships that ought to pertain in landscapes shared by people and wolves. This theoretical outlook is illustrated using the controversy over wolves in the northeastern region of the United States. I conclude with a set of reflections on theorizing the cosmopolis, the interpretation of cosmopolitan landscapes, and living with cosmopolitan wolves.


Resolving Conflicts Between People And Canada Geese: The Need For Comprehensive Management Approaches, John Hadidian Jan 2002

Resolving Conflicts Between People And Canada Geese: The Need For Comprehensive Management Approaches, John Hadidian

Wildlife Population Management Collection

Canada geese have become established and are now numerous enough in many urban and suburban areas that conflicts with humans have become frequent. Although potential threats to human health are often cited as a justification to manage goose populations, currently available science suggests that this is not a serious issue. This leaves the primary concern as one of aesthetics– people do not like having to deal with what can sometimes be copious amounts of goose droppings. Animal welfare interests have questioned the humaneness of different roundup and killing programs, and advocated non-lethal approaches and egg addling. Both approaches currently are …


The “Nuisance” Wildlife Control Industry: Animal Welfare Concerns, John Hadidian, Laura J. Simon, Michele R. Childs Jan 2002

The “Nuisance” Wildlife Control Industry: Animal Welfare Concerns, John Hadidian, Laura J. Simon, Michele R. Childs

Wildlife Population Management Collection

The recent and rapid growth of the private “nuisance” wildlife control industry follows the unparalleled current period of urban and suburban expansion. Nuisance wildlife control businesses range from simple home-based services to sophisticated franchised businesses. The nuisance wildlife control operator may hold an advanced degree in the wildlife sciences, or simply be an entrepreneur without formal education or even background experience in wildlife. State and federal agencies may participate directly or indirectly in nuisance wildlife control, in activities ranging from dissemination of advice or information to actual participation in programs that may lead to removal of animals. Naturally, all of …


Fisheries Research Report No. 137 - Annual Report On The Monitoring Of The Recreational Marron Fishery In 2000, With An Analysis Of Long-Term Data And Changes Within This Fishery, Brett Molony, Chris Bird Jan 2002

Fisheries Research Report No. 137 - Annual Report On The Monitoring Of The Recreational Marron Fishery In 2000, With An Analysis Of Long-Term Data And Changes Within This Fishery, Brett Molony, Chris Bird

Fisheries Research Reports

This report presents the data from the 2000 season and compares the results with previous records. Although the 2000 marron season was relatively successful compared to the 1999 season it was still modest in terms of the historical records. Further, the recreational marron fishery continues to be declining in terms of catch rate, CPUE and other indicators derived from four data sources. The discussion highlights the variable nature of marron populations and the possible causes of the very different population structures of marron within the fishery. Further, possible reasons for the long-term decline of the marron fishery are discussed. It …


Status Of The Small-Mouthed Salamander, Ambystoma Texanum (Mathes) In West Virginia, Robert Fiorentino Jan 2002

Status Of The Small-Mouthed Salamander, Ambystoma Texanum (Mathes) In West Virginia, Robert Fiorentino

Theses, Dissertations and Capstones

Over the past 60 years little natural history information on Ambystoma texanum (Small-mouthed Salamander) has been collected in West Virginia, the eastern most location for the species. Three historical breeding populations of A. texanum have been documented in the state, but salamanders from 2 of these locations have not been documented for the past 30 years. Searches of historical sites and favorable habitat in Mason, Jackson, and Wood counties yielded no evidence for the presence of A. texanum, except for the known breeding site in Wood County. Information on time of breeding and egg development was collected at the Wood …


Leptodactylus Silvanimbus, W. R. Heyer, Rafael O. De Sá, Sarah Muller Jan 2002

Leptodactylus Silvanimbus, W. R. Heyer, Rafael O. De Sá, Sarah Muller

Biology Faculty Publications

Adult Leptodactylus silvanimhus are of moderate sized, the head is about as wide as long, and the hind limbs are moderate in length (see Table; also see Heyer and Thompson 2000 for definitions of adult size and leg length categories for Leptodacrylus). The male vocal sac is single and internal. Male forearms are hypertrophied in larger individuals. Adult males have two black thumb spines on each hand and lack chest spines. Individuals lack dorsolateral folds. The toe tips are narrow, not expanded. Females have weakly developed lateral toe fringes and males either have lateral toe ridges or weakly developed fringes. …


Colony Composition And Demographics Of Beavers In Illinois, Stanley T. Mctaggart Jan 2002

Colony Composition And Demographics Of Beavers In Illinois, Stanley T. Mctaggart

Masters Theses

Beavers (Castor canadensis) have been extensively studied throughout North America, but little research has been conducted on this species in Illinois and the Midwest. Beavers exhibit wide variations in colony composition and demographics over their broad geographic range, so regional research is important for sound management. The objectives of this study were to investigate the: (1) typical composition of beaver colonies in Illinois; (2) reproductive potential of female beavers in Illinois; (3) sex-age composition of beaver populations in Illinois; and (4) efficacy of night-vision surveys versus removal trapping for estimating colony size. This study was conducted during the 1999-00 and …