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1. Comments on incongruous formulations in the SAM (state-space assessment model) model and consequences for fish stock assessment

Author:
Aldrin, M.; Aanes, S.; Subbey, S.
Source:
Fisheries research 2019 v.210 pp. 224-227
ISSN:
0165-7836
Subject:
fisheries,   etc   ; equations; fish; models; mortality; uncertainty;     Show all 6 Subjects
Abstract:
... The stock assessment model SAM (state-space assessment model) is an important tool for analysing fishery data and is used for abundance estimation of several different fish stocks. We demonstrate incongruous formulations in the equations that relate the catch data to fish abundance, and in the fishery and natural mortality rates. We present example results to show how these formulations introduce ...
DOI:
10.1016/j.fishres.2018.08.001

2. Contemporary changes in structural dynamics and socioeconomic drivers of inland fishery in China

Author:
Zhao, Kangshun; García Molinos, Jorge; Zhang, Huan; Zhang, Min; Xu, Jun
Source:
The Science of the total environment 2019 v.648 pp. 1527-1535
ISSN:
0048-9697
Subject:
fishery resources; freshwater fisheries,   etc   ; fish; linear models; socioeconomic development; trophic levels; China;     Show all 7 Subjects
Abstract:
... Dynamics of inland fishery remain poorly understood despite their increasing socioeconomic importance and rapid growth. Here we analyze the changes in the dynamics of Chinese traditional and new inland fisheries by examining 26 years (1991–2016) of reported annual catch and mean trophic level in relation to socioeconomic development in China at provincial level. Results from spatial panel linear m ...
DOI:
10.1016/j.scitotenv.2018.08.196

3. A comparison of age- and size-structured assessment models applied to a stock of cisco in Thunder Bay, Ontario

Author:
Fisch, Nicholas C.; Bence, James R.; Myers, Jared T.; Berglund, Eric K.; Yule, Daniel L.
Source:
Fisheries research 2019 v.209 pp. 86-100
ISSN:
0165-7836
Subject:
fisheries; fisheries management,   etc   ; Coregonus artedi; fish; invertebrates; models; mortality; otoliths; population dynamics; spawning; uncertainty; Ontario;     Show all 12 Subjects
Abstract:
... Stock assessments are critical to modern fisheries management, supporting the calculation of key reference variables used to make informed management decisions. However, there is still considerable uncertainty as to which class of assessment models is appropriate to use under different circumstances. A common class of models used when age data are available are statistical catch-at-age assessment ...
DOI:
10.1016/j.fishres.2018.09.014

4. Mapping the geographical consolidation of fishing activities in Iceland during the maturation of the ITQ fisheries management system

Author:
Edvardsson, Kristinn Nikulás; Păstrăv, Cezara; Benediktsson, Karl
Source:
Applied geography 2018 v.97 pp. 85-97
ISSN:
0143-6228
Subject:
fisheries; fisheries law; fisheries management,   etc   ; geography; issues and policy; Iceland;     Show all 6 Subjects
Abstract:
... Consolidation of the fishing industry worldwide is an issue heavily debated among scholars. Many economists have argued for its necessity, while others – such as sociologists, anthropologists and geographers – have pointed out negative effects of consolidation on fishing communities.The aim of this paper is to measure the geographical consolidation of fishing in Iceland since the introduction of t ...
DOI:
10.1016/j.apgeog.2018.05.013

5. Windows of Opportunity for Sustainable Fisheries Management: The Case of Eastern Baltic Cod

Author:
Quaas, MartinF.; Stoeven, MaxT.; Klauer, Bernd; Petersen, Thomas; Schiller, Johannes
Source:
Environmental and resource economics 2018 v.70 no.2 pp. 323-341
ISSN:
0924-6460
Subject:
sustainable fisheries,   etc   ; fishermen; overfishing;     Show all 3 Subjects
Abstract:
... We study under which conditions a ‘window of opportunity’ for a change from an overfishing situation, with high fishing effort, but low stocks and catches, towards sustainable fishery management arises. Studying the Eastern Baltic cod fishery we show that at very low stock sizes (as they prevailed in the early 2000s) all interest groups involved in the fishery unanimously prefer maximum-sustainabl ...
DOI:
10.1007/s10640-017-0122-y

6. Catch-and-release regulations and paddlefish angler preferences

Author:
Cha, Wonkyu; Melstrom, Richard T.
Source:
Journal of environmental management 2018 v.214 pp. 1-8
ISSN:
0301-4797
Subject:
fisheries,   etc   ; harvesting; models; Oklahoma;     Show all 4 Subjects
Abstract:
... This paper presents research on recreational paddlefish anglers’ preferences for catch-and-release fishing. We used stated preference (SP) data from a choice experiment to identify the effect of a hypothetical catch-and-release regulation on fishing preferences, and revealed preference (RP) data to measure the desirability of actual paddlefish fishing locations. We then modeled the effects of catc ...
DOI:
10.1016/j.jenvman.2018.02.054

7. Impacts of the nonlinear relationship between abundance and its index in a tuned virtual population analysis

Author:
Hashimoto, Midori; Okamura, Hiroshi; Ichinokawa, Momoko; Hiramatsu, Kazuhiko; Yamakawa, Takashi
Source:
Fisheries science 2018 v.84 no.2 pp. 335-347
ISSN:
0919-9268
Subject:
fisheries,   etc   ; fish; models; mortality;     Show all 4 Subjects
Abstract:
... The abundance index used in a tuned virtual population analysis (VPA) is usually assumed to be proportional to actual abundance. However, the actual abundance and abundance index do not always have a linear relationship. Such nonlinearity can cause biases in abundance estimates as well as retrospective biases arising from systematic differences in abundance estimates when more data are successivel ...
DOI:
10.1007/s12562-017-1159-0

8. Repeated discrete choices in geographical agent based models with an application to fisheries

Author:
Carrella, Ernesto; Bailey, Richard M.; Madsen, Jens Koed
Source:
Environmental modelling & software 2019 v.111 pp. 204-230
ISSN:
1364-8152
Subject:
fisheries,   etc   ; algorithms; computer software; decision making; environmental models;     Show all 5 Subjects
Abstract:
... Most geographical agent-based models simulate agents through custom-made decision-making algorithms. This makes it difficult to assess which results are general and which are contingent on the algorithm's details. We present a set of general algorithms, applicable in any agent-based model for choosing repeatedly from a set of alternatives. We showcase each in the same fishery agent-based model and ...
DOI:
10.1016/j.envsoft.2018.08.023

9. Inter-species quota flexibility – Exploring a new management tool in European Common Fisheries Policy

Author:
Rätz, Hans-Joachim; Lloret, Josep
Source:
Ocean & coastal management 2018 v.163 pp. 222-231
ISSN:
0964-5691
Subject:
fisheries law; fisheries management,   etc   ; bycatch; managers; markets; models; overfishing;     Show all 7 Subjects
Abstract:
... Inter-species quota flexibility (IQF) is a new management tool made available to fishery managers in the reformed European Common Fisheries Policy (CFP) launched in 2013. IQF regulates a limited transfer between stock-specific total allowable catches (TAC), the main measure of stock conservation in CFP set in accordance with precautionary or, where possible, analytically estimated levels of maximu ...
DOI:
10.1016/j.ocecoaman.2018.06.017

10. Assessment of Socioeconomic Impacts Through Physical Multipliers: The Case of Fishing Activity in Galicia (Spain)

Author:
Surís-Regueiro, Juan C.; Santiago, Jose L.
Source:
Ecological economics 2018 v.147 pp. 276-297
ISSN:
0921-8009
Subject:
fisheries; fisheries management,   etc   ; decision making; multipliers; socioeconomics; Spain;     Show all 6 Subjects
Abstract:
... In the context of fishery management based on the ecosystem-based approach, it is necessary to develop methods and tools in order to facilitate the decision making and balance the socioeconomic and environmental dimensions of sustainability. The goal of this document consists of providing an assessment tool of the possible socioeconomic impacts arising from the variation in the fishing opportuniti ...
DOI:
10.1016/j.ecolecon.2018.01.020

11. Crafting Our Own Rules: Constitutionality as a Bottom-Up Approach for the development of By-Laws in Zambia

Author:
Haller, Tobias; Merten, Sonja
Source:
Human ecology 2018 v.46 no.1 pp. 3-13
ISSN:
0300-7839
Subject:
fisheries; fisheries law,   etc   ; gender; governance; ownership; politics; researchers; sanitation; Zambia;     Show all 9 Subjects
Abstract:
... This paper details the process of bottom-up crafting of by-laws to the state fishery laws in Zambia, the initial empirical case informing the development of the constitutionality concept. It explores the historical, political as well as environmental and economic conditions on which the process of sense of ownership of the institution building process came to be. The role of the researchers as wel ...
DOI:
10.1007/s10745-017-9917-2

12. Justification for retention of the catch-and-release in the wild brown trout Salmo cf. trutta fishery

Author:
Simonović, Predrag; Grubić, Goran; Tošić, Ana; Čanak Atlagić, Jelena; Škraba Jurlina, Dubravka; Nikolić, Vera
Source:
Fisheries research 2018 v.200 pp. 17-24
ISSN:
0165-7836
Subject:
fisheries,   etc   ; Salmo trutta; fishermen; rivers;     Show all 4 Subjects
Abstract:
... Total catch-and-release (C&R) is a regulatory measure implemented for maintaining the self-sustainability of stocks encountering strong fishing pressure. The River Đetinja is a tailwater with very strong fishing pressure, managed for more than a decade by C&R. That fishing regime was questioned by a new fishery manager, without the justification provided. The only available data for examining the ...
DOI:
10.1016/j.fishres.2017.12.010

13. Reconstructing governability: How fisheries are made governable

Author:
Song, Andrew M; Johnsen, Jahn P; Morrison, Tiffany H
Source:
Fish and fisheries 2018 v.19 no.2 pp. 377-389
ISSN:
1467-2960
Subject:
fisheries,   etc   ; cybernetics; politics; social environment;     Show all 4 Subjects
Abstract:
... Governability is an important concept in the political and environmental social sciences with increasing application to socio‐ecological systems such as fisheries. Indeed, governability analyses of fisheries and related systems such as marine‐protected areas have generated innovative ways to implement sustainability ideals. Yet, despite progress made, we argue that there remain limitations in curr ...
DOI:
10.1111/faf.12262

14. Evaluating tools for the spatial management of fisheries

Author:
Canty, Steven W. J.; Truelove, Nathan K.; Preziosi, Richard F.; Chenery, Simon; Horstwood, Matthew A. S.; Box, Stephen J.
Source:
Journal of applied ecology 2018 v.55 no.6 pp. 2997-3004
ISSN:
0021-8901
Subject:
fisheries; fisheries management; fishery resources,   etc   ; compliance; fish; forensic sciences; genetic analysis; genotyping; morphometry; otoliths; provenance;     Show all 11 Subjects
Abstract:
... The ability to define the spatial dynamics of fish stocks is critical to fisheries management. Combating illegal, unreported and unregulated fishing and the regulation of area‐based management through physical patrols and port side controls are growing areas of management attention. Augmenting the existing approaches to fisheries management with forensic techniques has the potential to increase co ...
DOI:
10.1111/1365-2664.13230

15. Managed out of existence: over-regulation of Indigenous subsistence fishing of the Yukon River

Author:
Walsey, Victoria; Brewer, Joseph
Source:
GeoJournal 2018 v.83 no.5 pp. 1169-1180
ISSN:
0343-2521
Subject:
fisheries; fisheries law; fishery resources,   etc   ; Alaska Natives; Oncorhynchus tshawytscha; environmental knowledge; indigenous knowledge; rivers; traditions;     Show all 9 Subjects
Abstract:
... Humans are adversely affected by the loss of vital fishery resources, specifically Indigenous peoples and the traditional knowledge systems that are foundationally tied to their culture. Discounting the ability and knowledge of Indigenous peoples stems from concepts rooted in “Tragedy of the Commons” in which a shared resource, in this case fisheries, if left unchecked will be destroyed by the mis ...
DOI:
10.1007/s10708-018-9879-y

16. Status of the large-scale commercial trawl fisheries in southern Lake Malawi

Author:
Kanyerere, G. Z.; Kaonga, D.; Mponda, O.; Nkhoma, B.; Ngulande, E.
Source:
Aquatic ecosystem health & management 2018 v.21 no.2 pp. 121-131
ISSN:
1539-4077
Subject:
fisheries; fisheries statistics; fishery resources,   etc   ; biomass; fish; fishing boats; linear models; stocking rate; Lake Malawi;     Show all 9 Subjects
Abstract:
... A study to assess the status of the large scale commercial fisheries operating in southern Lake Malawi was conducted using generalised linear modelling and Principles of Precautionary Approach. The generalised linear modelling analysis 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 ...
DOI:
10.1080/14634988.2018.1457388

17. Understanding indigenous knowledge: Its role and potential in fisheries resources management in Malawi

Author:
Donda, S.; Manyungwa-Pasani, C. L.
Source:
Aquatic ecosystem health & management 2018 v.21 no.2 pp. 176-184
ISSN:
1539-4077
Subject:
fisheries; fishery resources; sustainable fisheries,   etc   ; climate change; fish; indigenous knowledge; issues and policy; livelihood; scientists; Malawi;     Show all 10 Subjects
Abstract:
... Fisheries resources have existed on earth for centuries and their management has depended on the knowledge available to those that were, and are, entrusted with management responsibilities. Formal technical and traditional knowledge have formed the basis for the formulation of fisheries management approaches. In the midst of global fisheries crises, such as fish stock over-exploitation and effects ...
DOI:
10.1080/14634988.2018.1451187

18. Coral reef fish community life history traits as potential global indicators of ecological and fisheries status

Author:
McClanahan, T.R.
Source:
Ecological indicators 2019 v.96 pp. 133-145
ISSN:
1470-160X
Subject:
fisheries; sustainable fisheries,   etc   ; anthropogenic activities; biomass; coral reefs; environmental indicators; fish; fish communities; geography; life history; multivariate analysis; prediction; trophic levels; Indian Ocean;     Show all 14 Subjects
Abstract:
... The productivity and diversity of coral reefs is being threatened by a number of human disturbances that could be better understood and managed with appropriate indicators. Here, I evaluated 9 biomass-weighted fish life history trait metrics and 4 categories of biomass (total, fishable, target, and non-target) using a large single-observer census of fish communities in 449 Indian Ocean reef sites. ...
DOI:
10.1016/j.ecolind.2018.08.055

19. Fresh eyes on an old issue: Demand-side barriers to a discard problem

Author:
van Putten, Ingrid; Koopman, Matt; Fleming, Aysha; Hobday, Alistair J.; Knuckey, Ian; Zhou, Shijie
Source:
Fisheries research 2019 v.209 pp. 14-23
ISSN:
0165-7836
Subject:
aquacultural and fisheries equipment; sustainable fisheries,   etc   ; bycatch; certification; economic analysis; economic sustainability; edible species; fish; fish discards; food security; income; markets; mortality; nongovernmental organizations; seafoods; supply chain; Australia;     Show all 17 Subjects
Abstract:
... Discarding is a worldwide problem in small-scale and industrial fisheries alike. A significant proportion of discarded fish are edible, and if high post-release mortality occurs, the practice may seem wasteful in the context of food security. There are different reasons for discarding which can be related to demand-side issues (e.g. market preferences), supply-side issues (e.g. on-board storage ca ...
DOI:
10.1016/j.fishres.2018.09.007

20. Predicting the timing of Pacific saury (Cololabis saira) immigration to Japanese fishing grounds: A new approach based on natural tags in otolith annual rings

Author:
Miyamoto, Hiroomi; Suyama, Satoshi; Vijai, Dharmamony; Kidokoro, Hideaki; Naya, Miyako; Fuji, Taiki; Sakai, Mitsuo
Source:
Fisheries research 2019 v.209 pp. 167-177
ISSN:
0165-7836
Subject:
fisheries; fishery resources,   etc   ; Cololabis saira; coasts; fish; geographical variation; growth rings; immigration; longitude; otoliths; prediction; surveys; temporal variation; Japan; Pacific Ocean;     Show all 15 Subjects
Abstract:
... Pacific saury, Cololabis saira, are widely distributed in the central Pacific Ocean during the pre-fishing season (June and July) and migrate westward to fishing grounds off the coast of Japan from August to December. This study clarified the relationship between pre-fishing distribution and immigration to the fishing grounds (i.e., the relationships among distribution during the pre-fishing seaso ...
DOI:
10.1016/j.fishres.2018.09.016