Control - Monitoring System Of Oxygen Level, Ph, Temperature And Feeding in Pond Based on Iot

Fish management systems have an important role in fish farming. One aspect of fish management is water quality which includes several things such as temperature, pH, oxygen levels and also feeding. So far, monitoring of water quality and feeding of fish has been done manually. This study aims to design a control-monitoring system for oxygen levels, pH, temperature and automatic feeding based on IoT. The reading data from the sensor and also the RTC will be forwarded by the microcontroller to the server to be displayed to the user. This system is automated with actuators in the form of aerators and motors, so that feeding and adding oxygen levels to the pond will be automatically carried out by the microcontroller. The results of this study indicate the system can work, temperature data, oxygen levels, pH can be monitored through the server and feeding can also be done.

Gender Roles and Economic Differentials in Aquaculture of Kainji Lake Basin, Nigeria

The existing power differences among men, women and youths in aquaculture pre-empted the study on gender roles and economic differentials in aquaculture of Kainji Lake Basin, Nigeria. Specifically, the study assessed sources of production resources, gender roles, cost and returns and existing gender gaps in aquaculture. Using a survey design, a two-stage sampling procedure was used to select 81 males and 39 females from a population of 229 fish farmers. Data were presented using descriptive statistics and analyzed with budgetary technique and gender gap ratios. Key result shows that the men and youths had direct access to land through inheritance and purchase while the women (61%) accessed land through a family relation. The men and male youths performed majority of the gender roles involved in preparation of ponds, fingerlings stocking, fish management and post-harvest activities while the women and female youths were actively involved in fish management, liming and grading. Economic indicators show that the men and youths have a higher return on investment than the women implying that such power differences still exist. Hence, it is recommended that women should be organized in groups for empowerment. This will enable them utilize their collective strength through division of labour in fish farming.

The Path to an Ecosystem Approach for Forage Fish Management: A Case Study of Atlantic Menhaden

Atlantic menhaden (Brevoortia tyrannus) support the largest fishery by volume on the United States East Coast, while also playing an important role as a forage species. Managers’ and stakeholders’ increasing concerns about the impact of Atlantic menhaden harvest on ecosystem processes led to an evolution in the assessment and management of this species from a purely single-species approach to an ecosystem approach. The first coastwide stock assessment of Atlantic menhaden for management used a single-species virtual population analysis (VPA). Subsequent assessments used a forward projecting statistical catch-at-age framework that incorporated estimates of predation mortality from a multispecies VPA while analytical efforts continued toward the development of ecosystem models and explicit ecological reference points (ERPs) for Atlantic menhaden. As an interim step while ecosystem models were being developed, a series of ad hoc measures to preserve Atlantic menhaden biomass for predators were used by managers. In August 2020, the Atlantic States Marine Fisheries Commission formally adopted an ecological modeling framework as a tool to set reference points and harvest limits for the Atlantic menhaden that considers their role as a forage fish. This is the first example of a quantitative ecosystem approach to setting reference points on the United States Atlantic Coast and it represents a significant advance for forage fish management. This case study reviews the history of Atlantic menhaden stock assessments and management, outlines the progress on the current implementation of ERPs for this species, and highlights future research and management needs to improve and expand ecosystem-based fisheries management.

PELATIHAN MANAJEMEN PEMELIHARAAN IKAN CUPANG SEBAGAI IKAN HIAS YANG BERPOTENSI MENINGKATKAN PENDAPATAN MASYARAKAT

Dedication to provide maintenance management training fighting fish (Betta sp.) the good and completely in accordance with SNI fighting fish to the community PayaPeunaga, Meureubo sub-district, West Aceh District.The problem faced today is the statistics of West Aceh Regency in 2017 figures indicating that many people have a productive age in PayaPeunaga Village, Meureubo Sub-district, but not accompanied by job vacancies, causing unemployment at productive ages. Solution offered from this dedication is to provide additional skill to the community in PayaPeunaga Village, MeureuboSubdistrict to be able to manage the good and correct fighting fish in accordance with SNI of fighting fish.Implementation of community service activities include: 1) discussion and socialization of fighting fish (Betta sp.) that potentially increase the income of the community and 2) good ornamental fighting fish management training according to SNI of fighting fish. Result of the dedication is that the community is very enthusiastic to cultivate fighting fish and hopes that this community service program can be continued to provide assistance to the community in PayaPeunaga Village, Meureubo Sub District, West Aceh.

From Catastrophe to Recovery: Stories of Fishery Management Success

<i>Abstract</i>.—Success achieving fishery management goals is possible but often requires concurrent strategies addressing ecology, politics, and public communication combined with some level of good fortune. As an introduction to this book, we identify several themes consistently highlighted among the fish management stories that follow, regardless of species, their life history, habitat needs, or type of waters they live in—streams, lakes, or ocean. In almost every case, success of management relied first and foremost on the abilities of professionals to restore the quality and quantity of a fish’s habitat. The success of these efforts varied in magnitude but was accomplished by a combination of effective environmental regulation, substantial public and private investment, and direct habitat manipulation—whether in Lake Erie (Canada and USA), the Vindeln River in northern Sweden, an Adirondack Mountain lake of New York (USA), or Sea Lamprey <i>Petromyzon marinus</i> along the Atlantic coast (USA). Fish need acceptable water quality and habitat for living: simply stated and obvious—fish need water! When water and fish habitat are restored, fish populations can naturally recover through colonization from remnant populations, as was experienced in the Scioto River, Ohio. In some cases, populations were restored by stocking fish, using careful genetic considerations, such as told for Snake River Sockeye Salmon <i>Oncorhynchus nerka</i>. Public engagement was a common theme among case studies presented in this text. Public support for management yielded the political will to provide funding, regulation, and enforcement. Public involvement was a critical component of stories told about Great Smoky Mountains Brook Trout <i>Salvelinus fontinalis</i>, Pacific salmon in British Columbia and Idaho, and Tonle Sap fisheries of Cambodia. Consistently, management success came when goals were clearly articulated and combined with an effective consensus-built management plan that had the long-term commitment of personnel and support of their agencies. These attributes yielded programs where actions were taken and long-term monitoring and assessment were implemented to gauge success. Assessment information allowed programs to be adaptive over time to changes in the ecological system and society and thereby helped address new, as well as ongoing, challenges the fish and fishery were experiencing. The stories in this text provide incontrovertible evidence that good things can happen with the development and implementation of effective fish management programs, demonstrating the value of our profession and providing clear evidence that success is not an impossible allusion but rather an achievable event. These success stories of restored fish and fisheries throughout the world should be celebrated within fishery science.