Spatial and temporal variation of seasonal synchrony in the deep-sea shrimp Aristeus antennatus in the Western Mediterranean

Hidalgo, Manuel; Rueda, Lucía; Molinero, Juan Carlos; Guijarro, Beatríz; Massutí, Enric

doi:10.1016/j.jmarsys.2015.02.007

Cited by 8 publications

(8 citation statements)

References 79 publications

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“…These results might be related to the contrasting hydrodynamic conditions in those areas (López‐Jurado et al ., ). The effects of such contrasting conditions have been already reported in cephalopods (Puerta et al ., ) and other taxonomic groups (Guijarro et al ., , ; Hidalgo et al ., , , ) from the archipelago. Compared to the southern area, the northern trawlers operate in higher productive waters, as they are influenced by nutrient‐rich inflows from the Gulf of Lions (Bosc et al ., ; López‐Jurado et al ., ).…”

Section: Discussionmentioning

confidence: 99%

“…This implies that cephalopod seasonal patterns can vary, for instance, with the magnitude or the phenology pattern of Chl‐a events to match recruitment with the optimal conditions of food availability. Thus, a slight environment–population uncoupling in seasonal dynamics may have important implications for survival, also affecting the long‐term persistence of populations (Pecl and Jackson, ; Hidalgo et al ., , ). Best model fits included the mean annual population density as a threshold covariate that defined low‐ and high‐density regimes.…”

Section: Discussionmentioning

confidence: 99%

“…In a preliminary analysis, Pearson's correlations between the LPUE time series of all selected locations from the mainland and archipelago regions were examined (Table S1). As a result of the low correlations observed between mainland and archipelago locations, we considered analyzing LPUE time series of both regions independently for the three species in accordance with recent studies (Hidalgo et al, 2015).…”

Section: Data Sourcesmentioning

confidence: 99%

“…LCI was expressed by the values of the first axis of a principal component analysis performed on residuals (Molinero et al, 2005). LCI influenced different taxonomic groups from the western Mediterranean (Fern andez de Puelles and Molinero, 2007Molinero, , 2008Hidalgo et al, 2011Hidalgo et al, , 2015, including cephalopods (Keller et al, 2014;Puerta et al, 2014).…”

Section: Data Sourcesmentioning

confidence: 99%

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Seasonal variability of cephalopod populations: a spatio‐temporal approach in the Western Mediterranean Sea

Puerta

Quetglas

Hidalgo

2016

Fisheries Oceanography

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Cephalopod populations show wide temporal fluctuations in abundance, which have usually been investigated at inter‐annual scales related to environmental variability. However, cephalopods are also strongly linked to seasonal environmental fluctuations owing to their short life cycles and single seasonal breeding. Therefore, population abundance critically depends on the success of breeding and recruitment from the previous year and the optimization of resources in a narrow period of favorable conditions. This adaptation of population dynamics is paramount in marked oligotrophic systems, such as the western Mediterranean Sea. We used monthly landings per unit effort (LPUE) to explore the spatio‐temporal variability in seasonal patterns of three cephalopod species (Illex coindetii, Eledone cirrhosa and Octopus vulgaris). Common trends across the study area were characterized for each species. In all cases, seasonal patterns were geographically aggregated in relation to differences in local environment (i.e., primary production and surface hydro‐climatology). Variability in the mean seasonal pattern over time was also investigated under contrasting environmental or population regimes. The mean seasonal trend was more pronounced in regimes of high‐population densities, suggesting a density‐dependent control that can modify the strength of the environmental forcing in the seasonal patterns. Our study also evidences a spatial synchrony in the seasonal fluctuations of LPUEs. Scales of synchrony ranged from 70 to 200 km, indicating a patchy‐aggregated spatial pattern as a part of complex population structures in the western Mediterranean. Improving our understanding of seasonal dynamics of cephalopods across temporal and spatial scales may lead to improved forecasts and management strategies.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Data Sourcesmentioning

confidence: 99%

Section: Data Sourcesmentioning

confidence: 99%

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Seasonal variability of cephalopod populations: a spatio‐temporal approach in the Western Mediterranean Sea

Puerta

Quetglas

Hidalgo

2016

Fisheries Oceanography

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“…Large-scale synchronic fluctuations have been described in phytoplankton (Doyle and Poore, 1974), zooplankton (Batchelder et al, 2012), fish (Kelly et al, 2009) and crustaceans (Koeller et al, 2009;Hidalgo et al, 2015). However, very little is known about cephalopods.…”

Section: Introductionmentioning

confidence: 99%

Environmentally driven synchronies of Mediterranean cephalopod populations

Keller

Quetglas

Puerta

et al. 2017

Progress in Oceanography

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The Mediterranean Sea is characterized by large scale gradients of temperature, productivity and salinity, in addition to pronounced mesoscale differences. Such a heterogeneous system is expected to shape the population dynamics of marine species. On the other hand, prevailing environmental and climatic conditions at whole basin scale may force spatially distant populations to fluctuate in synchrony. Cephalopods are excellent case studies to test these hypotheses owing to their high sensitivity to environmental conditions. Data of two cephalopod species with contrasting life histories (benthic octopus vs nectobenthic squid), obtained from scientific surveys carried out throughout the Mediterranean during the last 20 years were analyzed. The objectives of this study and the methods used to achieve them (in parentheses) were: (i) to investigate synchronies in spatially separated populations (decorrelation analysis); (ii) detect underlying common abundance trends over distant regions (dynamic factor analysis, DFA); and (iii) analyse putative influences of key environmental drivers such as productivity and sea surface temperature on the population dynamics at regional scale (general linear models, GLM). In accordance with their contrasting spatial mobility, the distance from where synchrony could no longer be detected (decorrelation scale) was higher in squid than in octopus (349 vs 217 km); for comparison, the maximum distance between locations was 2620 km. The DFA revealed a general increasing trend in the abundance of both species in most areas, which agrees with the already reported worldwide proliferation of cephalopods. DFA results also showed that population dynamics are more similar in the eastern than in the western Mediterranean basin. According to the GLM models, cephalopod populations were negatively affected by productivity, which would be explained by an increase of competition and predation by fishes. While warmer years coincided with declining octopus numbers, areas of high sea surface temperature showed higher densities of squid. Our results are relevant for regional fisheries management and demonstrate that the regionalisation objectives envisaged under the new Common Fishery Policy may not be adequate for Mediterranean cephalopod stocks

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The influence of environmental factors and hydrodynamics on sardine (Sardina pilchardus, Walbaum 1792) abundance in the southern Alboran Sea

Jghab

Vargas‐Yáñez

Reul

et al. 2019

Journal of Marine Systems

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Spatial and temporal variation of seasonal synchrony in the deep-sea shrimp Aristeus antennatus in the Western Mediterranean

Cited by 8 publications

References 79 publications

Seasonal variability of cephalopod populations: a spatio‐temporal approach in the Western Mediterranean Sea

Seasonal variability of cephalopod populations: a spatio‐temporal approach in the Western Mediterranean Sea

Environmentally driven synchronies of Mediterranean cephalopod populations

The influence of environmental factors and hydrodynamics on sardine (Sardina pilchardus, Walbaum 1792) abundance in the southern Alboran Sea

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