2020
DOI: 10.1016/j.dsr2.2019.104666
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Are shifts in species distribution triggered by climate change? A swordfish case study

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Cited by 19 publications
(14 citation statements)
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“…The distribution of large pelagic fishes may also be associated with various environmental conditions, despite their highly migratory activity. Several populations of swordfish have shifted latitudinally, whereas the Mediterranean population has shifted longitudinally towards the west, as a result of climate change [74]. Local conditions, such as clusters of higher density occurring near converging fronts and strong thermoclines may also affect swordfish distribution at a more local scale [75].…”
Section: Discussionmentioning
confidence: 99%
“…The distribution of large pelagic fishes may also be associated with various environmental conditions, despite their highly migratory activity. Several populations of swordfish have shifted latitudinally, whereas the Mediterranean population has shifted longitudinally towards the west, as a result of climate change [74]. Local conditions, such as clusters of higher density occurring near converging fronts and strong thermoclines may also affect swordfish distribution at a more local scale [75].…”
Section: Discussionmentioning
confidence: 99%
“…Combining data from multiple sampling programs can help overcome this problem (Waggitt et al, 2020;Maureaud et al, 2021), but also increases the intrinsic variability related to observers' skills, sampling design and protocols, which may result in confounding species range shifts with variations in the distribution and intensity of the sampling effort (Thorson et al, 2016). For that reason, separating the observation process from the true underlying spatial distribution is essential to accurately identify range shifts over time (Chust et al, 2014b) and to identify potential drivers (Erauskin-Extramiana et al, 2019b). Recently, a species distribution function (SDF) able to distinguish between sampling variation and true geographic variability has been developed (Thorson et al, 2016).…”
Section: Introductionmentioning
confidence: 99%
“…We chose a Gaussian distribution with canonical (identity) link function, cubic smoothing spline and low-rank tensor product smooth to add modelling functionality (Wood 2006). GAMs model the monthly and interannual response of the species, which in our study is CPUE (Villarino et al 2015;Erauskin-Extramiana et al 2020), the number of positions at site level (0.001°) in each 0.5° (55.5 km) fishing grid square corresponding to the total catch (kg) by number of days fished (Silva et al 2015) within the central Queensland coastal domain. Spatio-temporal factors were considered by fitting a three-dimensional smoother to the product of three variables, namely, latitude, longitude and month.…”
Section: Gam Analysismentioning
confidence: 99%