Cold-Water Coral Colonization of Alboran Sea Knolls, Western Mediterranean Sea

Author(s):  
Ben De Mol ◽  
David Amblas ◽  
Antonio Calafat ◽  
Miquel Canals ◽  
Ruth Duran ◽  
...  



Heliyon ◽  
2021 ◽  
pp. e07880
Author(s):  
Claudio Stalder ◽  
Akram El Kateb ◽  
Jorge E. Spangenberg ◽  
Loubna Terhzaz ◽  
Agostina Vertino ◽  
...  


Author(s):  
Javier Urra ◽  
Teresa García ◽  
Estefanía León ◽  
Helena Gallardo-Roldán ◽  
Matías Lozano ◽  
...  

Mechanized dredging impact on discards was assessed along the northern Alboran Sea (W Mediterranean Sea). Data from 101 dredging operations were analysed for contrasting spatial and seasonal variability of damage, with the use of a three-level damage scale. 4.5% of discarded individuals displayed intermediate damage, whereas 11.3% displayed severe damage. Echinoderms displayed the highest level of damage (~75% of total collected individuals) and Echinocardium cf. mediterraneum was the most susceptible discarded species (85% with severe damage), followed by bivalves (7.3%) and crustaceans (3.3%). The target Chamelea gallina showed a low proportion of damaged individuals, probably due to their thick protective shell, which promotes the survival of discarded undersized target individuals. Spatial differences in damage level on discards were linked to some gear characteristics, to the higher amount of gravels and to longer tow durations, whereas damage was generally higher in cold months and partly related to higher quantities of hard shelled molluscs, in both cases increasing the abrasion and damage to retained organisms. Data suggest that dredges with a lower number of narrower iron teeth and towed for a shorter time could decrease the damage rate in discards of this fishery. A spatial management plan based on the type of grounds would be useful in order to improve efficiency of these fisheries and minimize their impact to soft bottoms with different commercial catches and biological communities.



2019 ◽  
Vol 175 ◽  
pp. 245-262 ◽  
Author(s):  
Guillem Corbera ◽  
Claudio Lo Iacono ◽  
Eulàlia Gràcia ◽  
Jordi Grinyó ◽  
Martina Pierdomenico ◽  
...  


2018 ◽  
Vol 143 ◽  
pp. 46-62 ◽  
Author(s):  
Claudio Stalder ◽  
Akram El Kateb ◽  
Agostina Vertino ◽  
Andres Rüggeberg ◽  
Osvaldo Camozzi ◽  
...  




2015 ◽  
Vol 11 (4) ◽  
pp. 3759-3798
Author(s):  
B. Ausín ◽  
I. Hernández-Almeida ◽  
J.-A. Flores ◽  
F.-J. Sierro ◽  
M. Grosjean ◽  
...  

Abstract. A new dataset of 88 marine surface sediment samples and related oceanic environmental variables (temperature, salinity, chlorophyll a, oxygen, etc.) was studied to quantify the relationship between assemblages of coccolithophore species and modern environmental conditions in the Western Mediterranean Sea and the Atlantic Ocean, west of the Strait of Gibraltar. Multivariate statistical analyses revealed that coccolithophore species were primarily related to the sea surface salinity (SSS) gradient, which explains an independent and significant proportion of variance in the coccolithophore data. A quantitative coccolithophore-based transfer function to estimate SSS was developed using the Modern Analog Technique (MAT) and weighted-averaging partial-least square regression (WA-PLS). The bootstrapped regression coefficient (R2boot) was 0.85MAT and 0.80WA-PLS, with root-mean square error of prediction (RMSEP) of 0.29MAT and 0.30WA-PLS (psu). The resulting transfer function was applied to fossil coccolithophore assemblages in the highly resolved (∼ 65 yr) sediment core CEUTA10PC08 from the Alboran Sea (Western Mediterranean) in order to reconstruct SSS for the last 25 kyr. The reliability of the reconstruction was evaluated by assessing the degree of similarity between fossil and modern coccolithophore assemblage, and comparison of reconstruction with fossil ordination scores. Analogs were poor for the stadials associated with Heinrich Event 2 and 1 and part of the Last Glacial Maximum. Good analogs indicate more reliable reconstruction of the SSS for the last 15.5 kyr. During this period, several millennial and centennial SSS changes were observed and associated with variations in the Atlantic Water entering the Alboran Sea, sea-level oscillations, and arid or humid atmospheric conditions in the Western Mediterranean.



2018 ◽  
Vol 27 (5) ◽  
pp. 408-416
Author(s):  
D. Brigolin ◽  
P. Girardi ◽  
P. I. Miller ◽  
W. Xu ◽  
D. Nachite ◽  
...  


2021 ◽  
Vol 171 ◽  
pp. 105475
Author(s):  
F. Sedano ◽  
A. Pavón-Paneque ◽  
C. Navarro-Barranco ◽  
J.M. Guerra-García ◽  
M. Digenis ◽  
...  


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