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catch-per-unit-effort

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Image
Published: 01 July 2013
Figure 3. Catch per unit effort (CPUE) of R. argentea caught with the 5 mm and 10 mm mesh sizes during experimental surveys conducted between April and September 2001. More
Image
Published: 02 October 2017
Figure 5. Variation (median, quartiles and range) in fish catch per unit effort (biomass per standard 40-m-long gill net per day) in lakes with (Ponto, 4 lakes) and without (Native, 11 lakes) Ponto-Caspian peracaridans (a), and commercial catches in Lake Dusia before (1953–1963) and after (1968 More
Journal Article
Aquatic Ecosystem Health & Management (2019) 22 (4): 408–416.
Published: 02 October 2019
...-reproductive season of Mosquitofish in four habitat types: Alternanthera philoxeroides habitat, Typha angustifolia habitat, Paspalum distichum habitat, and no vegetation habitat. Mosquitofish catch per unit effort was significantly lower in Typha habitat than in the other three habitats during the reproductive...
Journal Article
Aquatic Ecosystem Health & Management (2009) 12 (1): 23–28.
Published: 09 March 2009
... using the Ontario Ministry of Natural Resources index netting methodology. A total of 2,760 lake whitefish were caught in 468 net sets, representing up to 17 year classes. The catch-per-unit-effort, as well as the number of year classes represented in the catch, was greater in Aundeck-Omni-Kaning than...
Journal Article
Aquatic Ecosystem Health & Management (2007) 10 (4): 381–391.
Published: 28 November 2007
... for lift nets and mosquito seine nets. A total of 17,326 t of Caridina was harvested in the Tanzanian waters of Lake Victoria during the same period. More Caridina was harvested by mosquito seine nets (95%) than by lift nets (5%). Catch-per-unit-effort (CPUE; kg boat −1 day −1 ) for Caridina ranged...
Journal Article
Aquatic Ecosystem Health & Management (2002) 5 (2): 139–146.
Published: 01 June 2002
... full-time workers and the rest were part-time. The total fishing effort exerted in the open waters of Laguna de Bay was 10,653,220 hours with a catch per unit effort of 0.25 kg h −1 . The total fish production was 8,146 and 2,668 metric tons in 1995 and 1996, respectively. The catch mainly consisted of...
Journal Article
Aquatic Ecosystem Health & Management (2013) 16 (3): 322–328.
Published: 01 July 2013
...Figure 3. Catch per unit effort (CPUE) of R. argentea caught with the 5 mm and 10 mm mesh sizes during experimental surveys conducted between April and September 2001. ...
Journal Article
Aquatic Ecosystem Health & Management (2008) 11 (3): 257–271.
Published: 25 August 2008
... increased considerably in the last decade, whereas catch per unit effort appears to have decreased considerably indicating that over-fishing has become locally problematic. An overview is presented of main conservation problems, including exotic species that confront aquatic ecosystems in Peru. Finally, an...
Journal Article
Aquatic Ecosystem Health & Management (2002) 5 (3): 267–281.
Published: 01 September 2002
..., for example, global climate change, and which ones may be owing to the fishery or other human activities. Some correlation occurs between the seasonal development of catch per unit effort of Stolothrissa tanganicae and copepod biomass. Sound data collection, timely conclusions, and appropriate...
Journal Article
Aquatic Ecosystem Health & Management (2014) 17 (1): 25–33.
Published: 02 January 2014
... concurrent zooplankton abundance, precluding even such aggregation. Copyright © AEHMS 2014 catch per unit effort foodweb pelagic fish planktivorous fish Stolothrissa tanganicae Limnothrissa miodon tropical lake Lake Tanganyika is ca. 9–12 million years old (Coulter, 1991 ; Cohen...
Journal Article
Aquatic Ecosystem Health & Management (2018) 21 (2): 121–131.
Published: 03 April 2018
... was used to standardise catch per unit of effort data from 1976 to 2009 and to determine the effects of fishing vessel characteristics such as engine size and hydro-acoustic devices on fish catch rates. The Precautionary Approach, through reference points like Bmax (reference point corresponding to...
Journal Article
Aquatic Ecosystem Health & Management (1998) 1 (1): 49–62.
Published: 01 January 1998
... from the original IBI were retained including: total number of species, number of sensitive species, and percent tolerant species. Trophic composition characters included the percentage of omnivores and insectivores. Fish condition was evaluated using the catch-per-unit of effort and the percentage of...
Journal Article
Aquatic Ecosystem Health & Management (1998) 1 (1): 63–74.
Published: 01 January 1998
... iron and steel manufacturer’s slag waste. No sensitive species, hybrids, headwater species, and either few or no simple lithophilic spawning species were collected from any of the sites in the Grand Calumet Lagoons. Species catch-per-unit of effort varied significantly between reaches in the Middle...
Image
Published: 28 February 2011
Figure 4. The average number (±SE) of centrarchid species (left) and total native species (right) per unit of sampling effort at six locations in Lake Ontario, to show consistency in catches trends between gear types. Sampling effort was defined as an electrofishing boat transect (100 m) or one More
Journal Article
Aquatic Ecosystem Health & Management (2008) 11 (1): 29–35.
Published: 10 March 2008
...”), and the perch, Lates stappersii (“mgebuka”) which predates clupeids. Although a lake-wide increase in catches and catch per unit effort, as a result of increased efficiency of artisanal units, has been reported ( Aro and Mannini, 1995 ; Mölsä et al., 2002 ; Sarvala et al., 2006 ), local over...
Journal Article
Aquatic Ecosystem Health & Management (2003) 6 (3): 299–310.
Published: 01 September 2003
... year 2000 (Table 1). Extension of fishing grounds was also evident, but all against a continued decrease in catch per unit effort and mean size of fish caught (Mkumbo and Cowx, 1999). The decline in the Nile perch landings have been mirrored by an expansion in the less profitable Rastrineobola fishery...
Journal Article
Aquatic Ecosystem Health & Management (2014) 17 (2): 115–121.
Published: 03 April 2014
... and May; summer = June, July and August; fall = September, October and November; and winter = December, January and February in the year prior to hatching. The majority of the lakes with Walleye catch per unit effort data are located in the northern part of Wisconsin which reflects the...
Journal Article
Aquatic Ecosystem Health & Management (2007) 10 (4): 449–457.
Published: 28 November 2007
... the size at first capture. Co-management is considered to be the most effective option to implement monitoring, control and surveillance strategies. To establish catches per unit effort (CPUE), and estimate the annual total catch, a catch assessment survey was conducted on a monthly rotational basis...
Journal Article
Aquatic Ecosystem Health & Management (2016) 19 (4): 468–475.
Published: 01 October 2016
... 3.62 kg catches compared to 2.87 kg in the outer estuary. Shallow depths (4–8 m) may be one important reason for the higher catch per unit effort in the inner estuary. In total, 42 different taxa were identified from the shrimp-trawl catches in this study, including 20 taxa from the inner estuary and...
Includes: Supplementary data
Journal Article
Aquatic Ecosystem Health & Management (2002) 5 (3): 283–292.
Published: 01 September 2002
... Boulenger) became sparse soon after the beginning of the industrial purse seine Ž shery in the 1960s (Coulter, 1991). Total catches have been increasing, but catches per unit effort have decreased in the most intensively Ž shed areas in the north and south ends of the lake (Coenen et al., 1998; Sarvala et...