Bridging the gap between commercial fisheries and survey data to model the spatiotemporal dynamics of marine species

2021 ◽  
Author(s):  
Marie‐Christine Rufener ◽  
Kasper Kristensen ◽  
J. Rasmus Nielsen ◽  
Francois Bastardie
Keyword(s):  
Survey Data ◽  
Marine Species ◽  
Spatiotemporal Dynamics ◽  
Commercial Fisheries

Traditional foods, corporate controls: networks of household access to key marine species in southern Bering Sea villages

Polar Record ◽  
2014 ◽  
Vol 50 (4) ◽  
pp. 364-378 ◽  
Author(s):  
Katherine Reedy ◽  
Herbert Maschner
Keyword(s):  
Social Stratification ◽  
Bering Sea ◽  
Marine Species ◽  
Commercial Fisheries ◽  
Adaptive Networks ◽  
Ocean Energy ◽  
Fishing Rights ◽  
Alternative Economies ◽  
Local Residents

ABSTRACTSouthern Bering Sea fishermen are vulnerable to losing access to key fisheries due largely to policy changes, permit loss, and the expense of fishing operations. Local residents generally do not have fishing rights in many of the high value commercial fisheries. They must continuously shape policy and explore alternative economies in order to stay fishermen. We were contracted by the U.S. Bureau of Ocean Energy Management to study the role of subsistence and commercial fisheries, land use, socioeconomics, and sharing networks in Alutiiq and Aleut/Unangan villages. Through an exploration of these data using innovative social network analysis that presents relationships, social stratification, commercialisation, and other dependencies in the maintenance of fisheries, sharing, trading, and revenue streams, this paper shows that in two of the most socioeconomically valuable fisheries, king crab (Paralithodes sp.andLithodes sp) and cod (Gadidae), local peoples have had to gain access to these foods by using means outside of what are academically perceived as their traditional subsistence and commercial allocation, resulting in adaptive networks of distribution. This work shows the range of networks surrounding these key foods and their associated vulnerabilities and resilience. Those sharing networks that demonstrate greater interconnectedness are much more stable and resilient.

scholarly journals Combining fisheries surveys to inform marine species distribution modelling

2020 ◽  
Vol 77 (2) ◽  
pp. 539-552 ◽  
Author(s):  
Meadhbh Moriarty ◽  
Suresh A Sethi ◽  
Debbi Pedreschi ◽  
T Scott Smeltz ◽  
Chris McGonigle ◽  
...  
Keyword(s):  
Survey Data ◽  
Relative Abundance ◽  
Species Distribution ◽  
Distribution Patterns ◽  
Marine Species ◽  
Species Distribution Modelling ◽  
Distribution Maps ◽  
Modelling Framework ◽  
Combining Data ◽  
Gear Efficiency

Abstract Ecosystem-scale examination of fish communities typically involves creating spatio-temporally explicit relative abundance distribution maps using data from multiple fishery-independent surveys. However, sampling performance varies by vessel and sampling gear, which may influence estimated species distribution patterns. Using GAMMs, the effect of different gear–vessel combinations on relative abundance estimates at length was investigated using European fisheries-independent groundfish survey data. We constructed a modelling framework for evaluating relative efficiency of multiple gear–vessel combinations. 19 northeast Atlantic surveys for 254 species-length combinations were examined. Space-time variables explained most of the variation in catches for 181/254 species-length cases, indicating that for many species, models successfully characterized distribution patterns when combining data from disparate surveys. Variables controlling for gear efficiency explained substantial variation in catches for 127/254 species-length data sets. Models that fail to control for gear efficiencies across surveys can mask changes in the spatial distribution of species. Estimated relative differences in catch efficiencies grouped strongly by gear type, but did not exhibit a clear pattern across species’ functional forms, suggesting difficulty in predicting the potential impact of gear efficiency differences when combining survey data to assess species’ distributions and highlighting the importance of modelling approaches that can control for gear differences.

Is the Personal Always Political?

2017 ◽  
Vol 38 (3) ◽  
pp. 133-143 ◽  
Author(s):  
Danny Osborne ◽  
Yannick Dufresne ◽  
Gregory Eady ◽  
Jennifer Lees-Marshment ◽  
Cliff van der Linden
Keyword(s):  
Survey Data ◽  
National Survey ◽  
Negative Relationship ◽  
Openness To Experience ◽  
Political Sophistication ◽  
Knowledge Based

Abstract. Research demonstrates that the negative relationship between Openness to Experience and conservatism is heightened among the informed. We extend this literature using national survey data (Study 1; N = 13,203) and data from students (Study 2; N = 311). As predicted, education – a correlate of political sophistication – strengthened the negative relationship between Openness and conservatism (Study 1). Study 2 employed a knowledge-based measure of political sophistication to show that the Openness × Political Sophistication interaction was restricted to the Openness aspect of Openness. These studies demonstrate that knowledge helps people align their ideology with their personality, but that the Openness × Political Sophistication interaction is specific to one aspect of Openness – nuances that are overlooked in the literature.

Accuracy of provider-supplied human resources survey data.

1984 ◽  
Vol 39 (12) ◽  
pp. 1485-1486 ◽  
Author(s):  
David J. Knesper ◽  
David J. Pagnucco
Keyword(s):  
Human Resources ◽  
Survey Data

COMPUTATION OF GROUP JOB DESCRIPTIONS FROM OCCUPATIONAL SURVEY DATA.

1966 ◽  
Author(s):  
WAYNE B. ARCHER
Keyword(s):  
Survey Data ◽  
Job Descriptions

Measuring Depression Prevalence: Comparing Administrative and Survey Data

2004 ◽  
Author(s):  
Eilish Cleary ◽  
Pat Martens ◽  
Charles Burchill
Keyword(s):  
Survey Data ◽  
Depression Prevalence

Can A Systematic Participative Method For Processing Workplace Survey Data Enhance Organizational Communication Skills?

2017 ◽  
Author(s):  
Per Lindberg ◽  
Thomas Karlsson ◽  
Annika Stromberg ◽  
Susanne Gustafsson ◽  
Ingrid Anderzen
Keyword(s):  
Organizational Communication ◽  
Survey Data ◽  
Communication Skills

Spatiotemporal Dynamics of Natural and Unnatural Face Changes Revealed Through Event-Related Brain Potentials

2008 ◽  
Author(s):  
Luc Boutsen ◽  
Tracy Warbrick ◽  
Glyn W. Humphreys
Keyword(s):  
Spatiotemporal Dynamics ◽  
Brain Potentials
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