scholarly journals Establishing stakeholder connections for management of the Irish orange roughy fishery

2006 ◽  
Vol 64 (4) ◽  
pp. 841-845 ◽  
Author(s):  
Samuel Shephard ◽  
Paul Connolly ◽  
Nils-Roar Hareide ◽  
Emer Rogan
Keyword(s):  
Stock Assessment ◽  
Management Plan ◽  
Scientific Data ◽  
Commercial Fishing ◽  
Negative Effects ◽  
Management Options ◽  
Orange Roughy ◽  
Fishing Strategies ◽  
Informal Discussion ◽  
Assessment Survey

Abstract S. Shephard, P. Connolly, N.-R. Hareide, and E. Rogan. 2007. Establishing stakeholder connections for management of the Irish orange roughy fishery. – ICES Journal of Marine Science, 64: 841–845. In 2000, an Irish fishery for orange roughy commenced in ICES Subarea VII. Landings peaked at >5000 t in 2002, but the fishery was largely closed from January 2005 because of concern about unsustainable fishing and the negative effects on deepwater sharks and coral. A multidimensional project was initiated in 2003 to investigate the fishery system and to develop a management plan. The project emphasized the establishment of productive relationships with stakeholders, particularly fishers. We describe and evaluate the process by which such linkages were developed successfully. Informal discussion with fishers produced experiential knowledge that described fishery development and fishing strategies, and informed subsequent scientific data collection. Strengthening relationships permitted access to commercial fishing trips and cooperation in research. An atmosphere developed in which management options could be debated in both wheelhouse and boardroom. Eventually, a formal research/stock assessment survey took place in which fishers, agencies, and deepwater coral ecologists cooperated.

scholarly journals The Influence of Increased Salvage Felling on Forwarding Distance and the Removal—A Case Study from Croatia

Forests ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 7
Author(s):  
Andreja Đuka ◽  
Zoran Bumber ◽  
Tomislav Poršinsky ◽  
Ivica Papa ◽  
Tibor Pentek
Keyword(s):  
Spatial Distribution ◽  
Management Plan ◽  
Management Unit ◽  
Negative Effects ◽  
Forest Operations ◽  
Spatial Reference ◽  
Infrastructure Network ◽  
Gis Environment ◽  
Research Period

During the seven-year research period, the average annual removal was by 3274 m3 higher than the average annual removal prescribed by the existing management plan (MP). The main reason lies in the high amount of salvage felling volume at 55,238 m3 (38.3%) in both the main and the intermediate felling due to oak dieback. The analysis of forest accessibility took into account the spatial distribution of cutblocks (with ongoing felling operations) and the volume of felled timber for two proposed factors: (1) the position of the cutblock and (2) the position of the removal. Cutblock position factor took into account the spatial position of the felling areas/sites, while removal position factor besides the spatial reference took into account the amount of felled timber (i.e., volume) both concerning forest infrastructure network and forest operations. The analysed relative forest openness by using geo-processing workflows in GIS environment showed four types of opening areas in the studied management unit (MU): single-opened, multiple-opened, unopened and opened areas outside of the management unit. Negative effects of the piece-volume law and low harvesting densities on forest operations are highlighted in this research due to high amount of salvage felling particularly in the intermediate felling by replacing timber volume that should have come from thinnings.

scholarly journals Incoherent dimensionality in fisheries management: consequences of misaligned stock assessment and population boundaries

2020 ◽  
Author(s):  
Aaron M Berger ◽  
Jonathan J Deroba ◽  
Katelyn M Bosley ◽  
Daniel R Goethel ◽  
Brian J Langseth ◽  
...  
Keyword(s):  
Population Structure ◽  
Stock Assessment ◽  
Spatially Explicit ◽  
Spatial Simulation ◽  
Management Options ◽  
Spatially Explicit Models ◽  
Fisheries Policy ◽  
Simulation Estimation ◽  
Definition Of ◽  
Dynamic Population

Abstract Fisheries policy inherently relies on an explicit definition of management boundaries that delineate the spatial extent over which stocks are assessed and regulations are implemented. However, management boundaries tend to be static and determined by politically negotiated or historically identified population (or multi-species) units, which create a potential disconnect with underlying, dynamic population structure. The consequences of incoherent management and population or stock boundaries were explored through the application of a two-area spatial simulation–estimation framework. Results highlight the importance of aligning management assessment areas with underlying population structure and processes, especially when fishing mortality is disproportionate to vulnerable biomass among management areas, demographic parameters (growth and maturity) are not homogenous within management areas, and connectivity (via recruitment or movement) unknowingly exists among management areas. Bias and risk were greater for assessments that incorrectly span multiple population segments (PSs) compared to assessments that cover a subset of a PS, and these results were exacerbated when there was connectivity between PSs. Directed studies and due consideration of critical PSs, spatially explicit models, and dynamic management options that help align management and population boundaries would likely reduce estimation biases and management risk, as would closely coordinated management that functions across population boundaries.

scholarly journals Fish harvesting advice under climate change: a risk-equivalent empirical approach

2020 ◽  
Author(s):  
Daniel E. Duplisea ◽  
Marie-Julie Roux ◽  
Karen L. Hunter ◽  
Jake Rice
Keyword(s):  
Climate Change ◽  
Empirical Relationship ◽  
Quantitative Model ◽  
Empirical Approach ◽  
Management Options ◽  
Greenland Halibut ◽  
External Variable ◽  
Fishing Strategies ◽  
Fishery Exploitation ◽  
Risk Equivalent

1AbstractThe rate of climate change (CC) has accelerated to the point where it now affects the mid-to long-term sustainability of fishing strategies. Therefore, it is important to consider practical and effective ways to incorporate CC into fisheries advice so that the advice can be considered conditioned to CC. We developed a quantitative model to characterise the empirical relationship between a variable affected by climate and fish production. We then used model projections as a foundation for a risk analysis of CC effects on harvesting of Greenland halibut Reinhardtius hippoglossoides in the Gulf of St Lawrence, Canada. The risk-based approach quantified a) the relative change in risk of a status quo fishing strategy under various CC scenarios, and b) the change in fishery exploitation rates required to achieve a management objective over a specified time period at a level of risk considered acceptable (risk equivalent fishery exploitation advice). This empirical approach can be used to develop risk-based advice for any other external variable that affects stock production in addition to climate-related variables and it can be applied in most situations where there is an index of stock biomass and fisheries catch. Shifting the focus from process-based understanding of the responses of fish stocks to CC to quantification of how CC-contributed uncertainty can alter the risks associated with different fishing strategies and/or management options, can ensure timely delivery of robust scientific advice for fisheries under non-stationary environmental conditions.

Anadromous Sturgeons: Habitats, Threats, and Management

2007 ◽  
Keyword(s):  
Large Scale ◽  
Atlantic Coast ◽  
The United States ◽  
Management Plan ◽  
Commercial Fishing ◽  
Atlantic Sturgeon ◽  
Coastal Fisheries ◽  
Number Of Factors ◽  
Acipenser Oxyrinchus ◽  
The U.S

<em>Abstract.</em>—Large-scale commercial fisheries for Atlantic sturgeon <em>Acipenser oxyrinchus</em> in the late 1880s eventually led to substantial reductions in the population size. The coastwide Atlantic sturgeon population of the United States has not recovered to the levels seen prior to the 1900s. A number of factors have contributed to the slow recovery or continued decline of Atlantic sturgeon populations, including continued commercial fishing and the targeting of females for caviar, bycatch in other fisheries, and changes in habitat due to dam construction and water quality degradation. The Atlantic States Marine Fisheries Commission (ASMFC) developed the first coastwide management plan for Atlantic sturgeon in 1990. In response to the shortcomings of that plan, the ASMFC applied new standards and the authority granted to it by the U.S. Congress to adopt a coastwide moratorium on all harvesting in 1998. A federal status review conducted in 1998 concluded that the continued existence of Atlantic sturgeon was not threatened given the situation at the time. Since then, monitoring programs have indicated varying levels of relative abundance in several water bodies along the Atlantic coast. The U.S. government is responsible for undertaking a status review to document any changes since the last review and determining whether those findings warrant a threatened or endangered listing for the species. The government’s findings may have far-reaching effects on many other Atlantic coastal fisheries.

Parasitic Crustaceans

2020 ◽  
pp. 401-434
Author(s):  
Barbara F. Nowak ◽  
Melissa B. Martin ◽  
Sebastián Boltaña
Keyword(s):  
Economic Impacts ◽  
Aquatic Species ◽  
Negative Effects ◽  
Management Options ◽  
Chemical Treatments ◽  
Potential Benefits ◽  
Commercially Important ◽  
Fish And Shellfish ◽  
Crustacean Parasites ◽  
Important Fish

This chapter provides a brief overview of crustacean parasites that infect commercially important fish and shellfish. Crustaceans are a diverse group of arthropods, with over 60,000 species that are significant to the aquaculture and fisheries sector, including parasitic species affecting other crustaceans, mollusks, and fishes. This chapter focuses on parasitic caligid copepods (sea lice), cymothoid isopods, and pea crabs of high economic impacts on commercially important aquatic species. The biology of the parasites, their effects on their hosts, the epidemiology of the infections, and economic impacts of these groups are described. Chemical treatments and husbandry modifications as management options for a range of crustacean parasites are presented, which includes the use of cleaner fish to remove parasites, specially designed cages to reduce infestation of parasites, or moving farms to deeper waters. The utilization of crustacean parasites as marine pest controls is further discussed, with emphasis on either its potential benefits or the negative effects on native crab populations. Despite the continuous adverse impacts parasitic crustaceans have on aquaculture, the progressive understanding of their biology and ecology may eventually lead to mitigation, if not complete eradication, of the parasites.

scholarly journals Presence and antimicrobial resistance of coagulase-negative staphylococci isolated from animals in a Veterinary Teaching Hospital in Cyprus

2020 ◽  
Vol 65 (No. 5) ◽  
pp. 191-198
Author(s):  
H Sukur ◽  
OM Esendal
Keyword(s):  
Antimicrobial Resistance ◽  
Teaching Hospital ◽  
Treatment Options ◽  
Companion Animals ◽  
Clinical Importance ◽  
Scientific Data ◽  
Multiple Drug ◽  
Negative Effects ◽  
Coagulase Negative Staphylococci ◽  
Resistance Patterns

Coagulase-negative staphylococci (CoNS) are a group of commensal microorganisms residing on the skin and mucous membranes of both humans and animals. Until recently, they have been regarded as non-pathogenic to livestock and companion animals, but since then, their clinical importance in veterinary medicine has increased with the discovery of their potential pathogenic roles in animals causing skin and soft tissue infections together with spontaneous abortions and mastitis. Scientific data concerning the presence of CoNS in North Cyprus are very limited. Therefore, the purpose of the study reported herein was to investigate the presence and antimicrobial resistance patterns of CoNS species isolated from various animals presented at the Veterinary Teaching Hospital in North Cyprus between July 2018 and 2019. Staphylococci were isolated from 37.0% (87/235) of the samples submitted, within which 60.9% (53/87) and 39.1% (34/87) were identified as coagulase-positive staphylococci (CoPS) and coagulase-negative staphylococci (CoNS), respectively. Among the CoNS, S. chromogenes was the most predominantly isolated species (14/34, 41.2%), followed by S. capitis (5/34, 14.7%) and S. simulans (4/34, 11.8%). Of these 34 CoNS, 24 (70.6%) and 10 (29.4%) were identified as MRCoNS and MSCoNS, respectively. The CoNS isolates showed relatively high levels of resistance towards amoxicillin/clavulanic acid (19/34, 55.9%), tetracycline (14/34, 41.2%) and penicillin (13/34, 38.2%). In conclusion, the presence of CoNS, especially MRCoNS, and the detection of multiple drug resistant (MDR) species with a high prevalence were regarded as being important since they might limit and have negative effects on the therapeutic treatment options of staphylococcal infections in animals, and might have both public and veterinary concerns.

scholarly journals Technical Note: Evaluating the Forest Stewardship Coached Planning Course in Washington State

2008 ◽  
Vol 23 (4) ◽  
pp. 236-238
Author(s):  
David Baumgartner ◽  
Patricia Cohn ◽  
Amy Grotta ◽  
Andy Perleberg ◽  
Donald Hanley ◽  
...  
Keyword(s):  
Management Practices ◽  
Management Plan ◽  
Technical Note ◽  
Washington State ◽  
Management Options ◽  
Plan Implementation ◽  
Family Forest ◽  
Washington State University ◽  
Stewardship Program ◽  
Forest Stewardship

Abstract From 1992 to 2005, over 1,100 family forest owners in Washington State participated in a Forest Stewardship Coached Planning (FSCP) course conducted by Washington State University Extension and the Washington State Department of Natural Resources. The course provides forest stewardship education and assists private forest landowners in writing their own forest stewardship management plans with guidance and “coaching” by natural resource professionals. A survey of past course participants conducted in 2006 had a 60% response rate. As a result of the course, 96% of the respondents believed they had a better understanding about management options, and 73% had implemented a practice they would not have done otherwise. Management planning is prevalent among the respondents, with nearly 70% having some type of management plan. Implementation of new management practices through the FSCP approach in Washington exceeds the rates reported in the national Forest Stewardship Program national survey.

scholarly journals The Effect of Pesticides on the Microbiome of Animals

Agriculture ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 79 ◽  
Author(s):  
Mikhail Y. Syromyatnikov ◽  
Mariya M. Isuwa ◽  
Olga V. Savinkova ◽  
Mariya I. Derevshchikova ◽  
Vasily N. Popov
Keyword(s):  
Intestinal Microbiota ◽  
Mating Success ◽  
Taxonomic Composition ◽  
Scientific Data ◽  
Negative Effects ◽  
Negative Effect ◽  
Bacterial Biodiversity ◽  
Induced Changes ◽  
The Impact ◽  
Impact Of Pesticides

In recent decades an increase in the use of pesticides to protect plants from pests, diseases and weeds has been observed. There are many studies on the effects of various pesticides on non-target organisms. This review aims to analyze and summarize published scientific data on the effects of pesticides on the animal microbiome. Pesticides can affect various parameters of the animal microbiome, such as the taxonomic composition of bacteria, bacterial biodiversity, and bacterial ratios and modify the microbiome of various organisms from insects to mammals. Pesticide induced changes in the microbiome reducing the animal’s immunity. The negative effects of pesticides could pose a global problem for pollinators. Another possible negative effect of pesticides is the impact of pesticides on the intestinal microbiota of bumblebees and bees that increase the body’s sensitivity to pathogenic microflora, which leads to the death of insects. In addition, pesticides can affect vitality, mating success and characteristics of offspring. The review considers methods for correcting of bee microbiome.

scholarly journals Contemporary Treatment Strategy for Spinal Metastasis: The “LMNOP” System

2011 ◽  
Vol 38 (3) ◽  
pp. 396-403 ◽  
Author(s):  
Gillian R. Paton ◽  
Evan Frangou ◽  
Daryl R. Fourney
Keyword(s):  
Spinal Metastasis ◽  
Scoring Systems ◽  
Management Plan ◽  
Classification Systems ◽  
Mechanical Instability ◽  
Key Factors ◽  
Management Options ◽  
Prior Therapy ◽  
Wide Range ◽  
Choice Of Treatment

The choice of treatment for spinal metastasis is complex because (1) it depends on several inter-related clinical and radiologic factors, and (2) a wide range of management options has evolved in recent years. While radiation therapy and surgery remain the cornerstones of treatment, radiosurgery and percutaneous vertebral augmentation have also established a role. Classification systems have been developed to aid in the decision-making process, and each has different strengths and weaknesses. The comprehensive scoring systems developed to date provide an estimate of life expectancy, but do not provide much advice on the choice of treatment. We propose a new decision model that describes the key factors in formulating the management plan, while recognizing that the care of each patient remains highly individualized. The system also incorporates the latest changes in technology. The LMNOP system evaluates the number of spinal Levels involved and the Location of disease in the spine (L), Mechanical instability (M), Neurology (N), Oncology (O), Patient fitness, Prognosis and response to Prior therapy (P).

Dynamic hypoxic zones in Lake Erie compress fish habitat, altering vulnerability to fishing gears

2015 ◽  
Vol 72 (6) ◽  
pp. 797-806 ◽  
Author(s):  
Richard T. Kraus ◽  
Carey T. Knight ◽  
Troy M. Farmer ◽  
Ann Marie Gorman ◽  
Paris D. Collingsworth ◽  
...  
Keyword(s):  
Dissolved Oxygen ◽  
Lake Erie ◽  
Scale Effects ◽  
Stock Assessment ◽  
Fish Habitat ◽  
Fish Distribution ◽  
Commercial Fishing ◽  
Hypoxic Conditions ◽  
Fishing Gears ◽  
Catch Rates

Seasonal degradation of aquatic habitats from hypoxia occurs in numerous freshwater and coastal marine systems and can result in direct mortality or displacement of fish. Yet, fishery landings from these systems are frequently unresponsive to changes in the severity and extent of hypoxia, and population-scale effects have been difficult to measure except in extreme hypoxic conditions with hypoxia-sensitive species. We investigated fine-scale temporal and spatial variability in dissolved oxygen in Lake Erie as it related to fish distribution and catch efficiencies of both active (bottom trawls) and passive (trap nets) fishing gears. Temperature and dissolved oxygen loggers placed near the edge of the hypolimnion exhibited much higher than expected variability. Hypoxic episodes of variable durations were frequently punctuated by periods of normoxia, consistent with high-frequency internal waves. High-resolution interpolations of water quality and hydroacoustic surveys suggest that fish habitat is compressed during hypoxic episodes, resulting in higher fish densities near the edges of hypoxia. At fixed locations with passive commercial fishing gear, catches with the highest values occurred when bottom waters were hypoxic for intermediate proportions of time. Proximity to hypoxia explained significant variation in bottom trawl catches, with higher catch rates near the edge of hypoxia. These results emphasize how hypoxia may elevate catch rates in various types of fishing gears, leading to a lack of association between indices of hypoxia and fishery landings. Increased catch rates of fish at the edges of hypoxia have important implications for stock assessment models that assume catchability is spatially homogeneous.

Sign in / Sign up

Export Citation Format

Share Document