scholarly journals Protogrammus alboranensis n. sp. (Teleostei: Callionymidae), a new species of dragonet from the Alboran Sea, western Mediterranean Sea

2011 ◽  
Vol 0 (0) ◽  
Author(s):  
Carlos Farias ◽  
Francesc Ordines ◽  
Cristina García-Ruiz ◽  
Ronald Fricke
Keyword(s):  
New Species ◽  
Mediterranean Sea ◽  
Western Mediterranean ◽  
Alboran Sea ◽  
Western Mediterranean Sea ◽  
A New Species ◽  
Alborán Sea

Effects of mechanized dredging targeting Chamelea gallina, striped venus clams, on the associated discards in the northern Alboran Sea (Western Mediterranean Sea)

2018 ◽  
Vol 99 (3) ◽  
pp. 575-585
Author(s):  
Javier Urra ◽  
Teresa García ◽  
Estefanía León ◽  
Helena Gallardo-Roldán ◽  
Matías Lozano ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Management Plan ◽  
Western Mediterranean ◽  
Alboran Sea ◽  
Severe Damage ◽  
Damage Level ◽  
Biological Communities ◽  
Western Mediterranean Sea ◽  
Chamelea Gallina ◽  
Alborán Sea

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.

scholarly journals A new species of Pista Malmgren, 1866 (Polychaeta, Terebellidae) from the north-western Mediterranean Sea

ZooKeys ◽  
2019 ◽  
Vol 838 ◽  
pp. 71-84
Author(s):  
Céline Labrune ◽  
Nicolas Lavesque ◽  
Paulo Bonifácio ◽  
Pat Hutchings
Keyword(s):  
New Species ◽  
Mediterranean Sea ◽  
Anterior Part ◽  
Posterior Part ◽  
Western Mediterranean ◽  
Single Pair ◽  
The North ◽  
Western Mediterranean Sea ◽  
North Western ◽  
A New Species

A new species of Terebellidae, Pistacolinisp. n., has been identified from the harbour of Banyuls-sur-Mer, north-western Mediterranean Sea. This new species was found in very high densities, exclusively in gravelly sand deposited manually, and was not found in the original source habitat of the gravel. This species is characterized by the colour of the ventral shields with pinkish anterior part and a blood red posterior part in live specimens, a pair of unequal-sized plumose branchiae inserted on segment II and anterior thoracic neuropodia with long-handled uncini. The presence of long-handled uncini even in the smallest specimens constitutes the major difference between Pistacolinisp. n. and other Pista species with a single pair of branchiae such as P.lornensis and P.bansei.

scholarly journals Development of coccolithophore-based transfer functions in the Western Mediterranean Sea: a sea surface salinity reconstruction for the last 15.5 kyr

2015 ◽  
Vol 11 (4) ◽  
pp. 3759-3798
Author(s):  
B. Ausín ◽  
I. Hernández-Almeida ◽  
J.-A. Flores ◽  
F.-J. Sierro ◽  
M. Grosjean ◽  
...  
Keyword(s):  
Transfer Function ◽  
Mediterranean Sea ◽  
Western Mediterranean ◽  
Sea Surface ◽  
Sea Surface Salinity ◽  
Weighted Averaging ◽  
Alboran Sea ◽  
Surface Salinity ◽  
Western Mediterranean Sea ◽  
Alborán Sea

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.

Coastal armouring affects intertidal biodiversity across the Alboran Sea (Western Mediterranean Sea)

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

Planktotrophic Columbellidae (Gastropoda) in the northeast Atlantic and the Mediterranean Sea, with description of a new species in the genus Mitrella

2020 ◽  
Vol 96 (1) ◽  
pp. 145-168
Author(s):  
Serge Gofas ◽  
Ángel Luque ◽  
Javier Urra
Keyword(s):  
New Species ◽  
Mediterranean Sea ◽  
Larval Development ◽  
Alboran Sea ◽  
Eastern Atlantic Ocean ◽  
Ca 50 ◽  
The Mediterranean ◽  
First Time ◽  
A New Species ◽  
Alborán Sea

Few of the ca 50 species of Columbellidae found in the eastern Atlantic Ocean have planktotrophic larval development denoted by a multispiral protoconch. One species of the genus Mitrella, ranging from the mid-Atlantic seamounts to the Alboran Sea, is here described as new to science and the geographic and bathymetric distributions of another three species, Amphissa acutecostata (Philippi, 1844), Mitrella canariensis (d'Orbigny, 1840) and M. nitidulina (Locard, 1897) are updated. The name Mitrella canariensis is shown to have precedence over M. pallaryi (Dautzenberg, 1927). Mitrella nitidulina is absent in the Mediterranean Sea, and A. acutecostata, the only amphiatlantic species, is recorded for the first time as living in the Alboran Sea. There is a definite differentiation in the bathymetrical range of these species, with M. canariensis being the shallowest and M. nitidulina being the deepest.

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

2012 ◽  
pp. 819-829 ◽  
Author(s):  
Ben De Mol ◽  
David Amblas ◽  
Antonio Calafat ◽  
Miquel Canals ◽  
Ruth Duran ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Cold Water ◽  
Western Mediterranean ◽  
Alboran Sea ◽  
Western Mediterranean Sea ◽  
Alborán Sea ◽  
Water Coral
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