scholarly journals Fish species biodiversity of Dadin-Kowa reservoir: Current status

2021 ◽  
Vol 11 (2) ◽  
pp. 100-111
Author(s):  
Nazeef S ◽  
Ja’afar A ◽  
Abubakar KA ◽  
Kabiru M
Keyword(s):  
Fish Species ◽  
Diversity Index ◽  
Management Strategies ◽  
Current Status ◽  
Aquatic Resources ◽  
Resources Management ◽  
As Species ◽  
The Family ◽  
Aquatic Resources Management ◽  
Study Sites

The fish composition of the three study sites of the reservoir were studied over a period of fifteen months (January, 2020 – March, 2021). A total of twenty-eight (28) fish species emanating from fourteen (14) families were obtained. The family Cichlidae was the dominant family with Oreochromis niloticus being the most abundant fish species while family Malapteruridae was the least with only 0.088% of the total abundance. Biodiversity indices of the study sites such as species richness ranges from 2.79-3.28, while species evenness ranged between 0.73 to 0.84, and diversity index revealed a range of 2.23-2.65. The Dadin-Kowa Reservoir has a rich ichthyofaunal composition which is facing challenges of structural collapse unless if management strategies are fully adopted. The host communities should be made integral components of aquatic resources management team. And other means of livelihood should be made attractive to reduce pressure on aquatic resources and deter possible biodiversity depressions.

scholarly journals Aquatic resources management

1986 ◽  
Vol 53 (sup001) ◽  
pp. 9-10
Author(s):  
L. Colombo ◽  
P. Belvedere ◽  
E. Fresi ◽  
C. E. Nash
Keyword(s):  
Aquatic Resources ◽  
Resources Management ◽  
Aquatic Resources Management

scholarly journals Development Learning Models of Fish Stock Assessment Technique Subjects based E-Learning at Aquatic Resources Technology Management Program Study at the Jakarta Fisheries High School

2019 ◽  
Vol 8 (5C) ◽  
pp. 930-936
Keyword(s):  
Stock Assessment ◽  
Fish Stock ◽  
Aquatic Resources ◽  
Resources Management ◽  
Average Value ◽  
Management Technology ◽  
Post Test ◽  
E Learning ◽  
Aquatic Resources Management ◽  
Fish Stock Assessment

The aim of the study in general is to develop a learning model fish stock assessment techniques based e-learning to meet competencies for program Students study of Aquatic Resources Management Technology in the Jakarta Fisheries University. This research uses research and development methods. Result of study: In the field trial, the value obtained from the results of the post-test is higher than the value of the Pre-test, the average value of the results of the pre-test 62 and the post-test average value of 86.79, so there is an increase of 24 , 79 points, the rate of increase is very significant, meaning that this figure shows that the model developed can improve student learning achievement in the Study Program of Aquatic Resources Management Technology. While the average percentage value obtained from field trials is 88.88%, this number is higher than the learning objectives specified in the specific instructional objectives of 80%..

scholarly journals The trout fishery of the upper Medway watershed, Nova Scotia, 2016-17

2018 ◽  
Vol 49 (2) ◽  
pp. 253
Author(s):  
Amanda J. Lavers ◽  
Jason N. Headley ◽  
John L. MacMillan ◽  
Darrin Reid
Keyword(s):  
Nova Scotia ◽  
Fish Species ◽  
Brook Trout ◽  
Management Strategies ◽  
Smallmouth Bass ◽  
Public Access ◽  
Current Status ◽  
Invasive Fish ◽  
Wilderness Area ◽  
Trout Fishery

During the spring of 2016 and 2017, the Mersey Tobeatic Research Institute (MTRI), in collaboration with the Nova Scotia Department of Fisheries and Aquaculture, conducted an angler creel survey in the Medway Lakes Wilderness Area that is located within the upper Medway watershed. Since 2012, public access to this region was improved to numerous lakes and streams, increasing the risk of overexploitation and the illegal introduction of invasive fish species. The purpose of this study was to assess the current status of the fishery for Brook trout, Salvelinus fontinalis, investigate the possible presence of invasive Smallmouth bass, Micropterus dolomieu, and Chain pickerel, Esox niger, and inform anglers of the effects of invasive species on local biodiversity. Over the course of this two-year study, a total of 264 anglers spent 1017 hours to catch 1279 trout, of which 74% were released. Median length of retained Brook trout was of 25 cm and the maximum length was 43 cm. The majority of the catch was 2+ and 3+ years old.  Angler catch rates were similar to nearby Kejimkujik National Park and greater than in the Tangier Grand Lakes Wilderness Area. The study area does not currently appear to be inhabited by invasive fish species. Most of the anglers interviewed lived nearby and had a long history of fishing in the upper Medway watershed. The study provides baseline data from the trout fishery which could be used to evaluate management strategies and future impacts of invasive fish species.

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