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1

Effects of shrimp trawlers on the fisheries status and environment of the Northwest Arabian Gulf

100%
Ali T. S.
Acta Ichthyologica et Piscatoria
|
2001
|
tom 31
|
nr 2
The catch per unit effort (c.p.u.e.) estimated as kg/hr and the yield per recruitment (Y/R) often common by-catch fishes are used in the present paper to investigate the effects of shrimp trawlers on the fisheries status and its environment in the Northwest Arabian Gulf. Samples were collected on weekly basis through fishery-oceanography survey carried out by the Marine Science Centre at the University of Basrah during the period of 1995-1999, using two small shrimp trawlers. The catch per unit effort (c.p.u.e.) of total, commercial fishes, shrimps, and other invertebrates catches showed a drastic drop year by year. The results of the relative yield per recruitment (Y′/R) of the ten investigated species, their optimum and current lengths at first capture (Lc) and their lengths at first maturation (Lm) indicate that the stock of these species suffered a problem of recruitment overfishing. A strategy of protection for Northwest Arabian Gulf fisheries involves implementing closed season, introducing an effort limitation policy should be designed.
2
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The Miedzyodrze ichthyofauna as caught by various gear

72%
Kompowski A., Neja Z.
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
|
1999
|
tom 03
3

Value and structure of fish catches and stocking intensity in lake enterprises before and after fisheries ownership transfer in Poland

72%
Mickiewicz M.
Archives of Polish Fisheries
|
2012
|
tom 20
|
nr 2
4

Forecasting and management of vendace [ Coregonus albula L.] stocks in Lake Lentua, Northern Finland

72%
Auvinen H., Vuorimies O., Huusko A.
Polskie Archiwum Hydrobiologii
|
1992
|
tom 39
|
nr 3-4
5

The comparison of Baltic herring and sprat age-length keys derived from Polish commercial and research data

72%
Horbowy J.
Bulletin of the Sea Fisheries Institute
|
1999
|
nr 2
6

The impact of material and mesh size on the selectivity of deep-sea cod gillnets

72%
Blady W., Netzel J., Zaucha J.
Bulletin of the Sea Fisheries Institute
|
2002
|
nr 2
7

Structure of benthic fish assemblages under intense exploitation in the Gulf of Gdansk

72%
Psuty-Lipska I.
Bulletin of the Sea Fisheries Institute
|
2001
|
nr 3
8

Protective sieves as a method to reduce by-catch in fyke-net eel fishery of the Vistula Lagoon

72%
Draganik B., Psuty-Lipska I., Borowski W.
Bulletin of the Sea Fisheries Institute
|
2004
|
nr 3
9

Determination of selectivity of cod codends made of netting turned through 90

72%
Moderhak W.
Bulletin of the Sea Fisheries Institute
|
1997
|
nr 1
10

Impact of fishing on vendace [ Coregonus albula ] population in Lake Pyhajarvi, SW Finland

72%
Helminen H., Hirvonen A., Sarvala J.
Polskie Archiwum Hydrobiologii
|
1992
|
tom 39
|
nr 3-4
11

Round goby, Neogobius melanostomus Pallas, 1811 in the catches of R-V Baltica

72%
Wandzel T.
Acta Ichthyologica et Piscatoria
|
2000
|
tom 30
|
nr 1
The present work constitutes an attempt of assessment of the expansion of the round goby, Neogobius melanostomus Pallas, 1811 in the waters of the southern Baltic Sea. It is based on frequency analysis of this species in the survey catches conducted within 1993-1999 by R/V Baltica of the Sea Fisheries Institute in Gdynia, Poland. Since 1996 the round goby has become noticeable in the catches carried out in the Gulf of Puck. A constant increase of the catches of this species has been recorded in catches conducted outside the Gulf of Puck on the fishing grounds: Bromka, Wisłoujście, and Krynica Morska.
12

Sea trout [Salmo trutta L.] and salmon [Salmo salar L.] catches in the lower Odra River system as well as stocking in the years 1973-1987

72%
Chelkowski Z.
Acta Ichthyologica et Piscatoria
|
1992
|
tom 22
|
nr 2
13

Levels and trends of changes in heavy metal concentrations in Baltic fish, 1991 to 1997

72%
Polak-Juszczak L.
Bulletin of the Sea Fisheries Institute
|
2000
|
nr 1
14

Occurrence of vendace, Coregonus albula [L.], and its habitats in Northeastern Poland in 1951-1994

58%
Skrzypczak A., Mamcarz A.
Electronic Journal of Polish Agricultural Universities. Series Fisheries
|
2006
|
tom 09
|
nr 3
15

The dependencies between the abundance of Chironomus f. l. plumosus and bream [Abramis brama] net catches in a lowland reservoir [Zegrzynski Reservoir, Central Poland]

58%
Prus P.
Oceanological and Hydrobiological Studies
|
2009
|
tom 38
|
nr 3
15-30
16

Spatial and temporal distribution of flounder fished in the Southern Baltic. Analysis of the catch records from Polish cutter logbooks

58%
Draganik B., Psuty-Lipska I.
Bulletin of the Sea Fisheries Institute
|
2002
|
nr 3
17

Biological characteristics of walleye pollock Theragra chalcogramma in the Cape Navarin area [Bering Sea] based on Polish catches from 1995-1998

58%
Janusz J., Trella K.
Bulletin of the Sea Fisheries Institute
|
2000
|
nr 2
18

Effectiveness of fisheries management in eutrophic lakes near Mragowo [Northeastern Poland]

58%
Mickiewicz M., Wolos A., Leopold M.
Archives of Polish Fisheries
|
2003
|
tom 11
|
nr 1
Data from a forty year period on catches and stocking from 25 selected lakes located in the Mrągowski Lake District were analyzed. The results of the analyses of catches and stocking indicate that, as a whole, the studied lakes underwent significant eutrophication and their environmental state declined during the studied period. These changes were manifested by changes in the quality of table fish catches and decreases in fishery effectiveness. The study results also indicated that positive changes occurred in the fishery of these lakes following the ownership transformation of the former State Fisheries Enterprises.
19

Growth, sex structure and commercial significance of turbot [Scophthalmus maximus L.] in the Lithuanian EEZ

58%
Stankus S.
Bulletin of the Sea Fisheries Institute
|
2002
|
nr 1
20

Characteristics of the structure of ichthyofauna assemblages in the littoral of the lobelia-lake Lake Dolgie Wielkie and the analysis of fisheries catches

58%
Kapusta A., Bogacka E.
Archives of Polish Fisheries
|
2003
|
tom 11
|
nr 2
The aim of the work was to characterize the species composition of the fish assemblages in the littoral zone and to analyze catch statistics from the lobelia-lake Lake Dołgie Wielkie. Catches were conducted with a fry trawl between May and August 2001 in the shallow littoral. Commercial catches from 1952 to 1970 and 1980 to 1999 were also analyzed. Nine fish species were caught and the majority (81.1%) of specimens belonged to the juvenile stages. The greatest contribution (%) to the littoral fish assemblage was made by belica, which was also described by the highest availability coefficient. A small number of species which comprised the lake fish assemblage and the distribution of their frequency of occurrence meant that the Simpson coefficient (D) of species diversity was low at 0.2082. The littoral of Lake Dołgie Wielkie is not very diverse and the ichthyofauna diversity in it is dominated by belica. In comparison with lobelia-lakes in western Pomerania, the structure of the share of various species in commercial catches was different in Lake Dołgie Wielkie, and the fisheries yield was higher. The fish assemblage which inhabits the lake is characteristic of eutrophic lakes.
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