South Coast Crustacean Managed Fishery Draft Management Plan 2015,
2015
Department of Primary Industries and Regional Development, Western Australia
South Coast Crustacean Managed Fishery Draft Management Plan 2015, Western Australian Department Of Fisheries
Fisheries Management Papers
Four commercial fisheries currently operate using pots to target crustaceans including deep sea crabs and rock lobsters on the south coast between Cape Leeuwin and the South Australian border. The four fisheries include, two managed fisheries; the Windy Harbour-Augusta Rock Lobster Managed Fishery (WHARLF) and Esperance Rock Lobster Managed Fishery (ERLF), the Southern Rock Lobster pot licence (SRL) fishery operating under Regulation 125 of the Fish Resources Management Regulations 1995 (FRMR) and the deep sea crab fishery operating under Fishing Boat Licence (FBL) Condition 105. Noting the multiple and different management arrangements in place to manage these fisheries and the …
South Coast Crustacean Managed Fishery Draft Management Plan 2015,
2015
Department of Primary Industries and Regional Development, Western Australia
South Coast Crustacean Managed Fishery Draft Management Plan 2015, Department Of Fisheries
Fisheries Management Papers
No abstract provided.
Further Investigation Into Critical Habitat For Juvenile Dhufish (Glaucosoma Hebraicum), Artificial Habitats And The Potential To Monitor Annual Juvenile Recruitment,
2015
Department of Fisheries, Western Australia
Further Investigation Into Critical Habitat For Juvenile Dhufish (Glaucosoma Hebraicum), Artificial Habitats And The Potential To Monitor Annual Juvenile Recruitment, Paul D. Lewis
Fisheries Research Reports
The West Australian dhufish is a demersal fish species that is highly sought after by commercial and recreational fishers in the West Coast Bioregion of WA. An assessment of the stock status in 2009 by the Department of Fisheries indicated the stock was overexploited with a need for a 50% reduction in the overall catch. As the species is long lived and slow growing, reaching a maximum age of 40 years of age, the recovery is likely to be slow.
Fisheries Occasional Publication 119: Australian Fisheries Management Forum - Fisheries Management Workshop, Adelaide 26 And 27 March 2014,
2015
Department of Primary Industries and Regional Development, Western Australia
Fisheries Occasional Publication 119: Australian Fisheries Management Forum - Fisheries Management Workshop, Adelaide 26 And 27 March 2014, Department Of Fisheries
Fisheries Occasional Publications
No abstract provided.
Changes In Zebrafish (Danio Rerio) Startle Responses Due To Stressors Related To Marine Bycatch,
2015
Connecticut College
Changes In Zebrafish (Danio Rerio) Startle Responses Due To Stressors Related To Marine Bycatch, Margot Wilsterman
Biology Honors Papers
Marine bycatch is one of the most pressing issues that result from modern industrialized fishing. Scientists do not have good estimates of rates of cryptic mortality, which is the mortality of individuals that are not landed but die from interactions with fishing gear below the water surface. One of the main causes of cryptic mortality is depredation, which occurs after individuals have escaped through fishing equipment and are eaten by predators waiting close behind for an effortless meal. In this study the effects of scale loss, slime loss, and exhaustion on the startle response of zebrafish were examined. These stressors …
Population Level Responses To Direct Application Liming In Gyrinophilus Porphyriticus,
2015
Marshall University
Population Level Responses To Direct Application Liming In Gyrinophilus Porphyriticus, Shelby Renea Timm
Theses, Dissertations and Capstones
Direct application liming (DAL) has been used to neutralize acidified streams to restore aquatic biota. This mitigation technique has been used globally for decades, yet little data exist on its effects on amphibian populations. My study investigated the effects of liming on amphibians by measuring variability in life histories of larval Gyrinophilus porphyriticus. I collected larvae from six streams in the Monongahela National Forest, West Virginia. I examined the effects of DAL on age structure, and I failed to detect a treatment effect. I used ANCOVAs to examine differences in body condition, body size, and gape size. I observed that …
Monitoring The Land Cover Change In The Historic Range Of Cambarus Veteranus In West Virginia Using A 1973-2013 Landsat Time Series,
2015
Marshall University
Monitoring The Land Cover Change In The Historic Range Of Cambarus Veteranus In West Virginia Using A 1973-2013 Landsat Time Series, Emma Martha Arneson
Theses, Dissertations and Capstones
The crayfish Cambarus veteranus is near extinction in its historic range of the Upper Guyandotte River watershed. The biggest threats to C. veteranus are mining and road construction. Mining has been a continuous activity in the southern coalfields where the crayfish has historically been found, yet little is known about how much land cover change the practice has done to the region. Crayfish act as important organisms within aquatic ecosystems and without them, those systems are often degraded. Quantifying the change in land cover is important to understanding threats to C. veteranus for future protection of the crayfish and its …
Father Convict Cichlids Bite Intruders More Often In Hot Temperatures,
2015
California Polytechnic State University, San Luis Obispo
Father Convict Cichlids Bite Intruders More Often In Hot Temperatures, Jesse L. Heckendorf
STAR Program Research Presentations
Convict cichlids (Archocentrus nigrofasciatus) have evolved to be extremely good parents by protecting their brood. Parental care leads to aggressive biting, chasing, and gill flaring to intimidate predators. In this experiment, we show that environmental factors, such as the changing of temperature in this case, affect a male convict cichlid’s aggression toward caring for his offspring when an intruder is introduced. Male convict cichlids attack more in warmer water.
A Tide Prediction And Tide Height Control System For Laboratory Mesocosms,
2015
San Jose State University
A Tide Prediction And Tide Height Control System For Laboratory Mesocosms, Luke Miller, Jeremy Long
Faculty Publications, Biological Sciences
Experimental mesocosm studies of rocky shore and estuarine intertidal systems may benefit from the application of natural tide cycles to better replicate variation in immersion time, water depth, and attendant fluctuations in abiotic and edaphic conditions. Here we describe a stand-alone microcontroller tide prediction open-source software program, coupled with a mechanical tidal elevation control system, which allows continuous adjustment of aquarium water depths in synchrony with local tide cycles. We used this system to monitor the growth of Spartina foliosa marsh cordgrass and scale insect herbivores at three simulated shore elevations in laboratory mesocosms. Plant growth decreased with increasing shore …
The Effect Of Silver Nanoparticles On Synaptic Responses In The Lateral Giant Escape Circuit Of The Crayfish,
2015
Marshall University
The Effect Of Silver Nanoparticles On Synaptic Responses In The Lateral Giant Escape Circuit Of The Crayfish, Samantha N. Adkins
Theses, Dissertations and Capstones
The lateral giant neuron in the crayfish is a neuron that controls the reflexive escape response; the context and experience-dependent tuning of this response is critical for survival. Serotonin modulates synaptic responses in this neuron, and social experiences (stress) changes the modulatory role of serotonin. I investigated the mechanisms of induced synaptic response changes and serotonergic modulatory changes after silver nanoparticle exposure to ask if 1) contaminant induced stress changes serotonergic modulation in a manner consistent with social stress and 2) shed light on potential neurotoxic effects of widely used, but poorly understood nanomaterials. Our data show that stress induced …
Accuracy Or Precision: Implications Of Sample Design And Methodology On Abundance Estimation,
2015
University of Nebraska-Lincoln
Accuracy Or Precision: Implications Of Sample Design And Methodology On Abundance Estimation, Lucas K. Kowalewski, Christopher J. Chizinski, Larkin A. Powell, Kevin L. Pope, Mark A. Pegg
Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications
Sampling by spatially replicated counts (point-count) is an increasingly popular method of estimating population size of organisms. Challenges exist when sampling by point-count method, and it is often impractical to sample entire area of interest and impossible to detect every individual present. Ecologists encounter logistical limitations that force them to sample either few large-sample units or many small sample-units, introducing biases to sample counts. We generated a computer environment and simulated sampling scenarios to test the role of number of samples, sample unit area, number of organisms, and distribution of organisms in the estimation of population sizes using N-mixture …
Likelihood Of Marine Pest Introduction To The Indian Ocean Territories,
2015
Department of Fisheries, WA
Likelihood Of Marine Pest Introduction To The Indian Ocean Territories, Justin I. Mcdonald, Samantha D. Bridgwood, Mathew Hourston
Fisheries Research Reports
The introduction of new species to environments in which they did not evolve has been widely recognised as one of the top five threats to marine ecosystem function and to biodiversity (Millennium Ecosystem Assessment, 2005).
Fisheries Research Report No. 260 - Management Implications Of Climate Change Effect On Fisheries In Western Australia Part 1: Environmental Change And Risk Assessment Frdc: Project No. 2010/535,
2015
Department of Primary Industries and Regional Development, Western Australia
Fisheries Research Report No. 260 - Management Implications Of Climate Change Effect On Fisheries In Western Australia Part 1: Environmental Change And Risk Assessment Frdc: Project No. 2010/535, Nicolavito Caputi, Ming Feng, Alan Pearce, J Benthuysen, Ainslie M. Denham, Y Hetzel, Gary Jackson, Brett W. Molony, Lindsay M. Joll, Arani N. Chandrapavan
Fisheries Research Reports
Objectives: 1. Assess future climate change effects on Western Australia’s marine environment using a suite of IPCC model projections, downscaled to the key shelf regions and the spatial and temporal scales relevant for key fisheries 2. Examine the modeled shelf climate change scenarios on fisheries and implications of historic and future climate change effects 3. Review management arrangements to examine their robustness to possible effects of climate change
Predictions Of Future Ephemeral Springtime Waterbird Stopover
Habitat Availability Under Global Change,
2015
University of Nebraska-Lincoln
Predictions Of Future Ephemeral Springtime Waterbird Stopover Habitat Availability Under Global Change, Daniel R. Uden, Craig R. Allen, Andrew A. Bishop, Roger Grosse, Christopher F. Jorgensen, Theodore G. Lagrange, Randy G. Stutheit, Mark P. Vrtiska
Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications
In the present period of rapid, worldwide change in climate and landuse (i.e., global change), successful biodiversity conservation warrants proactive management responses, especially for long-distance migratory species. However, the development and implementation of management strategies can be impeded by high levels of uncertainty and low levels of control over potentially impactful future events and their effects. Scenario planning and modeling are useful tools for expanding perspectives and informing decisions under these conditions. We coupled scenario planning and statistical modeling to explain and predict playa wetland inundation (i.e., presence/absence of water) and ponded area (i.e., extent of water) in the Rainwater …
The Importance Of Scaling For Detecting Community Patterns:
Success And Failure In Assemblages Of Introduced Species,
2015
University of Nebraska-Lincoln
The Importance Of Scaling For Detecting Community Patterns: Success And Failure In Assemblages Of Introduced Species, Craig R. Allen, David G. Angeler, Michael P. Moulton, Crawford S. Holling
Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications
Community saturation can help to explain why biological invasions fail. However, previous research has documented inconsistent relationships between failed invasions (i.e., an invasive species colonizes but goes extinct) and the number of species present in the invaded community. We use data from bird communities of the Hawaiian island of Oahu, which supports a community of 38 successfully established introduced birds and where 37 species were introduced but went extinct (failed invasions). We develop a modified approach to evaluate the effects of community saturation on invasion failure. Our method accounts (1) for the number of species present (NSP) when the species …
Effects Of Alternative Framing On The Publics Perceived Importance Of Environmental Conservation,
2015
Rutgers University
Effects Of Alternative Framing On The Publics Perceived Importance Of Environmental Conservation, Amanda E. Sorensen, Daniel Clark, Rebecca C. Jordan
Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications
Effective communication of science to the general public is important for numerous reasons, including support for policy, funding, informed public decision making, among others. Prior research has found that scientists participating in public policy and public communication must frame their communication efforts in order to connect with audiences. A frame is the mechanism that individuals use to understand and interpret the world around them. Framing can encourage specific interpretations and reference points for a particular issue or event; especially when meaning is negotiated between the media and public audiences. In this study, we looked at the effect of framing within …
Abiotic Habitat Preferences Of Age-0 Paddlefish In Lake Sakakawea, North Dakota During Late Summer,
2015
Bemidji State University
Abiotic Habitat Preferences Of Age-0 Paddlefish In Lake Sakakawea, North Dakota During Late Summer, Derek Dufault
Journal of Earth and Life Science
Since the early 1990’s, surface visual counts along transects have been conducted annually, allowing for estimates of relative abundance and year-class strength of age-0 paddlefish Polyodon spathula on the upper portions of Lake Sakakawea, North Dakota. This study focuses on the annual visual surface count data collected over an eleven year period from 2004-2014. More specifically it focuses on abiotic habitat factors (Secchi depth, water depth, and water temperature) and how they relate to age-0 paddlefish locations in late summer. Understanding habitat use during early life stages is imperative, yet to date, there is very limited knowledge available regarding the …
Influence Of Depth And Retrieval Speed On Yellow Perch Barotrauma Recovery Time In Winter,
2015
Bemidji State University
Influence Of Depth And Retrieval Speed On Yellow Perch Barotrauma Recovery Time In Winter, Bradley J. Klingsheim
Journal of Earth and Life Science
Physoclistous fish are often affected by barotrauma because the swim bladder is not connected to the esophagus. Barotrauma is increasingly being used in assessing mortality in fish brought from deep water. Barotrauma is the physical damage that occurs because of the over inflation of the gas bladder resulting from a rapid decrease in ambient pressure. The two important factors influencing barotrauma effects are water depth and decompression. In this study, two experiments were conducted on yellow perch (Perca flavescens) at three depth locations on Grace Lake, Bemidji, Minnesota. Fish were measured for barotrauma recovery time (s) following capture by hook …
The Effects Of Harvest Regulations On Behaviors
Of Duck Hunters,
2015
University of Nebraska-Lincoln
The Effects Of Harvest Regulations On Behaviors Of Duck Hunters, Matthew T. Haugen, Larkin A. Powell, Mark P. Vrtiska, Kevin L. Pope
Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications
Uncertainty exists as to how duck harvest regulations influence waterfowl hunter behavior. We used the U.S. Fish and Wildlife Service’s Parts Collection Survey to examine how harvest regulations affected behaviors of Central Flyway duck hunters. We stratified hunters into ranked groups based on seasonal harvest and identified three periods (1975–1984, 1988–1993, 2002–2011) that represented different harvest regulations (moderate, restrictive, and liberal, respectively; season length and daily bag limits smallest in restrictive seasons and largest in liberal seasons). We examined variability of seven measures of duck hunter behaviors across the periods: days harvesting ducks, daily harvest, hunter mobility, mallard (Anas platyrhynchos …
Masked Expression Of Life- History
Traits In A Highly Variable Environment,
2015
University of Nebraska-Lincoln
Masked Expression Of Life- History Traits In A Highly Variable Environment, Jason A. Deboer, Joseph J. Fontaine, Christopher J. Chizinski, Kevin L. Pope
Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications
Differing life-history strategies may act as a constraint on reproductive expression that ultimately limits the ability of individual species to respond to changes in the magnitude or frequency of environmental variation, and potentially underlies the variation oft en inherent in phenotypic and evolved responses to anthropogenic change. Alternatively, if there are environmental cues that predict reproductive potential, differential expression of life-history strategies may represent differences in the adaptive capacity to optimize current reproductive value given variation in environmental conditions. We compared several aspects of walleye Sander vitreus spawning ecology at two reservoirs that diff er in environmental variability (i.e., annual …
