Isabel Pinto - Profile on Academia.edu (original) (raw)

Papers by Isabel Pinto

Research paper thumbnail of Mapas de distribución de algas marinas de la Península Ibérica e Islas Baleares. XVII. Laminaria rodriguezii Bornet y adiciones a los mapas de L. hyperborea (Gunner.) Foslie, L. ochroleuca Bach. Pyl. y L. saccharina (L.) Lamour. (Laminariales, Fucophyceae). Bot Complut

Mapas de distribución de algas marinas de la Península Ibérica e Islas Baleares. XVII. Laminaria rodriguezii Bornet y adiciones a los mapas de L. hyperborea (Gunner.) Foslie, L. ochroleuca Bach. Pyl. y L. saccharina (L.) Lamour. (Laminariales, Fucophyceae). Bot Complut

Research paper thumbnail of Experimental integrated aquaculture of fish and red seaweeds in Northern Portugal

Aquaculture, 2006

Three potentially valuable red seaweeds, Chondrus crispus Stackhouse, Gracilaria bursa pastoris (... more Three potentially valuable red seaweeds, Chondrus crispus Stackhouse, Gracilaria bursa pastoris (S.G. Gmelin) P.C. Silva and Palmaria palmata (L.) O. Kuntze, collected in northern Portugal, were cultivated using the nutrient-rich effluents from a local turbot (Scophthalmus maximus Linnaeus) and sea bass (Dicentrarchus labrax Linnaeus) farm. The algae were cultivated in a two level cascade system. Several arrangements of the cascade

Research paper thumbnail of Data integration for European marine biodiversity research: creating a database on benthos and plankton to study large-scale patterns and long-term changes

Hydrobiologia, 2010

The general aim of setting up a central database on benthos and plankton was to integrate long-, ... more The general aim of setting up a central database on benthos and plankton was to integrate long-, medium-and short-term datasets on marine biodiversity. Such a database makes it possible to analyse species assemblages and their changes on spatial and temporal scales across Europe. Data collation lasted from early 2007 until August 2008, during which 67 datasets were collected covering three divergent habitats (rocky shores, soft bottoms and the pelagic environment). The database contains a total of 4,525 distinct taxa, 17,117 unique sampling locations and over 45,500 collected samples, representing almost 542,000 distribution records. The database geographically covers the North Sea (221,452 distribution records), the North-East Atlantic (98,796 distribution records) and furthermore the Baltic Sea, the Arctic and the Mediterranean. Data from 1858 to 2008 are presented in the database, with the longest time-series from the Baltic Sea soft bottom benthos. Each delivered dataset was subjected to certain quality control procedures, especially on Electronic supplementary material The online version of this article (

Research paper thumbnail of Checklist of benthic marine algae and cyanobacteria of northern Portugal

Botanica Marina, 2000

The northern Portuguese coast is a biogeographic transition zone where many macroalgal species ha... more The northern Portuguese coast is a biogeographic transition zone where many macroalgal species have their distribution limits; it is thus a particularly interesting region for investigating species distribution shifts. An updated and complete list of species for this region is not available in spite of its baseline importance for comparative studies with past and present data. Based on new records, literature references, and herbarium data, we provide an updated checklist of the benthic marine algae of the northern Portuguese coast. This checklist includes 346 species: 26 Cyanobacteria, 200 Rhodophyta, 70 Ochrophyta, and 50 Chlorophyta. From these, 21 species are new records for the Portuguese coast (Lyngbya aestuarii, olivascens) and 33 were recorded for the first time in the north of Portugal. Alien species have increased in number and extended their distribution range over the last 10 years in the study area. Distribution shifts of northern cold water species with southern distribution limit in the north of Portugal were not consistent among species.

Research paper thumbnail of The role of ammonium in photoprotection against high irradiance in the red alga Grateloupia lanceola

Aquatic Botany, 2006

Combined and/or interactive effects of inorganic nitrogen (as ammonium) and irradiance on the acc... more Combined and/or interactive effects of inorganic nitrogen (as ammonium) and irradiance on the accumulation of nitrogenous compounds, like UV-absorbing mycosporine-like amino acids (MAAs), chlorophyll a and phycobiliproteins, were examined in the red alga Grateloupia lanceola (J. Agardh) J. Agardh in a high irradiance laboratory exposure and a subsequent recovery period under low light. Also, photosynthetic activity as in vivo chlorophyll fluorescence of photosystem II, i.e. optimum quantum yield (F v /F m ), electron transport rate (ETR) and quantum efficiency, were examined. Photosynthetic activity, phycobiliproteins and internal nitrogen content declined during the 3-day PAR (photosynthetically active radiation; 600 mmol s À1 m À2 ) and PAR + UVR (ultraviolet radiation; UVB 280-315 nm 0.8 W m À2 , UVA 315-400 nm 16 W m À2 ) exposure. Ammonium supplied in the culture medium (0, 100 and 300 mM NH 4 Cl) modified the responses of the alga to high irradiance exposures in a concentration dependent manner, mainly with respect to recovery, as the highest recovery during a 10-day low light period was produced under elevated concentration of ammonium (300 mM). The recovery of photosynthetic activity and phycobiliproteins was enhanced in the algae previously incubated under PAR + UVR as compared to exposure to only PAR, suggesting a beneficial effect of UVR on recovery or photoprotective processes under enriched nitrogen conditions. However, the content of MAAs did not follow the same pattern and thus it could not be concluded as the cause of observed enhanced recovery. #

Research paper thumbnail of Evaluation of three seaweeds Gracilaria bursa-pastoris, Ulva rigida and Gracilaria cornea as dietary ingredients in European sea bass (Dicentrarchus labrax) juveniles

Aquaculture, 2006

The aim of this study was to evaluate the inclusion of three seaweeds Gracilaria bursa-pastoris (... more The aim of this study was to evaluate the inclusion of three seaweeds Gracilaria bursa-pastoris (GP), Ulva rigida (UR) and Gracilaria cornea (GC) as dietary ingredients on the performance, nutrient utilisation and body composition of European sea bass juveniles. Six experimental diets were formulated to replace 5% (GP-5, UR-5, and GC-5 Diets) and 10% (GP-10, UR-10 and GC-10 Diets) fish protein hydrolysate (CPSP) by each of the three seaweeds. A control diet was used, without inclusion of any seaweed. Diets were fed to duplicate groups of 25 European sea bass (Dicentrarchus labrax) juveniles (IBW = 4.7 g) for 10 weeks. Growth performance was only significantly reduced (P b 0.05) in fish fed the GC-10 diet, whereas the feed conversion ratio increased significantly in those fish. The apparent digestibility coefficients of dry matter and lipid were significantly lower in fish fed diet GC-10 relative to those fed the control diet. Carcass composition was similar among treatments, although fish fed GC-10 exhibited significantly higher ash content.

Research paper thumbnail of Current Patterns of Macroalgal Diversity and Biomass in Northern Hemisphere Rocky Shores

PLoS ONE, 2010

Latitudinal gradients in species abundance and diversity have been postulated for nearshore taxa ... more Latitudinal gradients in species abundance and diversity have been postulated for nearshore taxa but few analyses have been done over sufficiently broad geographic scales incorporating various nearshore depth strata to empirically test these gradients. Typically, gradients are based on literature reviews and species lists and have focused on alpha diversity across the entire nearshore zone. No studies have used a standardized protocol in the field to examine species density among sites across a large spatial scale while also focusing on particular depth strata. The present research used field collected samples in the northern hemisphere to explore the relationships between macroalgal species density and biomass along intertidal heights and subtidal depths and latitude. Results indicated no overall correlations between either estimates of species density or biomass with latitude, although the highest numbers of both were found at mid-latitudes. However, when strata were examined separately, significant positive correlations were found for both species numbers and biomass at particular strata, namely the intertidal ones. While the data presented in this paper have some limitations, we show that latitudinal macroalgal trends in species density and biomass do exist for some strata in the northern hemisphere with more taxa and biomass at higher latitudes.

Research paper thumbnail of Mapas de distribución de algas marinas de la Península Ibérica e Islas Baleares. XVII. Laminaria rodriguezii Bornet y adiciones a los mapas de L. hyperborea (Gunner.) Foslie, L. ochroleuca Bach. Pyl. y L. saccharina (L.) Lamour. (Laminariales, Fucophyceae). Bot Complut

Mapas de distribución de algas marinas de la Península Ibérica e Islas Baleares. XVII. Laminaria rodriguezii Bornet y adiciones a los mapas de L. hyperborea (Gunner.) Foslie, L. ochroleuca Bach. Pyl. y L. saccharina (L.) Lamour. (Laminariales, Fucophyceae). Bot Complut

Research paper thumbnail of Experimental integrated aquaculture of fish and red seaweeds in Northern Portugal

Aquaculture, 2006

Three potentially valuable red seaweeds, Chondrus crispus Stackhouse, Gracilaria bursa pastoris (... more Three potentially valuable red seaweeds, Chondrus crispus Stackhouse, Gracilaria bursa pastoris (S.G. Gmelin) P.C. Silva and Palmaria palmata (L.) O. Kuntze, collected in northern Portugal, were cultivated using the nutrient-rich effluents from a local turbot (Scophthalmus maximus Linnaeus) and sea bass (Dicentrarchus labrax Linnaeus) farm. The algae were cultivated in a two level cascade system. Several arrangements of the cascade

Research paper thumbnail of Data integration for European marine biodiversity research: creating a database on benthos and plankton to study large-scale patterns and long-term changes

Hydrobiologia, 2010

The general aim of setting up a central database on benthos and plankton was to integrate long-, ... more The general aim of setting up a central database on benthos and plankton was to integrate long-, medium-and short-term datasets on marine biodiversity. Such a database makes it possible to analyse species assemblages and their changes on spatial and temporal scales across Europe. Data collation lasted from early 2007 until August 2008, during which 67 datasets were collected covering three divergent habitats (rocky shores, soft bottoms and the pelagic environment). The database contains a total of 4,525 distinct taxa, 17,117 unique sampling locations and over 45,500 collected samples, representing almost 542,000 distribution records. The database geographically covers the North Sea (221,452 distribution records), the North-East Atlantic (98,796 distribution records) and furthermore the Baltic Sea, the Arctic and the Mediterranean. Data from 1858 to 2008 are presented in the database, with the longest time-series from the Baltic Sea soft bottom benthos. Each delivered dataset was subjected to certain quality control procedures, especially on Electronic supplementary material The online version of this article (

Research paper thumbnail of Checklist of benthic marine algae and cyanobacteria of northern Portugal

Botanica Marina, 2000

The northern Portuguese coast is a biogeographic transition zone where many macroalgal species ha... more The northern Portuguese coast is a biogeographic transition zone where many macroalgal species have their distribution limits; it is thus a particularly interesting region for investigating species distribution shifts. An updated and complete list of species for this region is not available in spite of its baseline importance for comparative studies with past and present data. Based on new records, literature references, and herbarium data, we provide an updated checklist of the benthic marine algae of the northern Portuguese coast. This checklist includes 346 species: 26 Cyanobacteria, 200 Rhodophyta, 70 Ochrophyta, and 50 Chlorophyta. From these, 21 species are new records for the Portuguese coast (Lyngbya aestuarii, olivascens) and 33 were recorded for the first time in the north of Portugal. Alien species have increased in number and extended their distribution range over the last 10 years in the study area. Distribution shifts of northern cold water species with southern distribution limit in the north of Portugal were not consistent among species.

Research paper thumbnail of The role of ammonium in photoprotection against high irradiance in the red alga Grateloupia lanceola

Aquatic Botany, 2006

Combined and/or interactive effects of inorganic nitrogen (as ammonium) and irradiance on the acc... more Combined and/or interactive effects of inorganic nitrogen (as ammonium) and irradiance on the accumulation of nitrogenous compounds, like UV-absorbing mycosporine-like amino acids (MAAs), chlorophyll a and phycobiliproteins, were examined in the red alga Grateloupia lanceola (J. Agardh) J. Agardh in a high irradiance laboratory exposure and a subsequent recovery period under low light. Also, photosynthetic activity as in vivo chlorophyll fluorescence of photosystem II, i.e. optimum quantum yield (F v /F m ), electron transport rate (ETR) and quantum efficiency, were examined. Photosynthetic activity, phycobiliproteins and internal nitrogen content declined during the 3-day PAR (photosynthetically active radiation; 600 mmol s À1 m À2 ) and PAR + UVR (ultraviolet radiation; UVB 280-315 nm 0.8 W m À2 , UVA 315-400 nm 16 W m À2 ) exposure. Ammonium supplied in the culture medium (0, 100 and 300 mM NH 4 Cl) modified the responses of the alga to high irradiance exposures in a concentration dependent manner, mainly with respect to recovery, as the highest recovery during a 10-day low light period was produced under elevated concentration of ammonium (300 mM). The recovery of photosynthetic activity and phycobiliproteins was enhanced in the algae previously incubated under PAR + UVR as compared to exposure to only PAR, suggesting a beneficial effect of UVR on recovery or photoprotective processes under enriched nitrogen conditions. However, the content of MAAs did not follow the same pattern and thus it could not be concluded as the cause of observed enhanced recovery. #

Research paper thumbnail of Evaluation of three seaweeds Gracilaria bursa-pastoris, Ulva rigida and Gracilaria cornea as dietary ingredients in European sea bass (Dicentrarchus labrax) juveniles

Aquaculture, 2006

The aim of this study was to evaluate the inclusion of three seaweeds Gracilaria bursa-pastoris (... more The aim of this study was to evaluate the inclusion of three seaweeds Gracilaria bursa-pastoris (GP), Ulva rigida (UR) and Gracilaria cornea (GC) as dietary ingredients on the performance, nutrient utilisation and body composition of European sea bass juveniles. Six experimental diets were formulated to replace 5% (GP-5, UR-5, and GC-5 Diets) and 10% (GP-10, UR-10 and GC-10 Diets) fish protein hydrolysate (CPSP) by each of the three seaweeds. A control diet was used, without inclusion of any seaweed. Diets were fed to duplicate groups of 25 European sea bass (Dicentrarchus labrax) juveniles (IBW = 4.7 g) for 10 weeks. Growth performance was only significantly reduced (P b 0.05) in fish fed the GC-10 diet, whereas the feed conversion ratio increased significantly in those fish. The apparent digestibility coefficients of dry matter and lipid were significantly lower in fish fed diet GC-10 relative to those fed the control diet. Carcass composition was similar among treatments, although fish fed GC-10 exhibited significantly higher ash content.

Research paper thumbnail of Current Patterns of Macroalgal Diversity and Biomass in Northern Hemisphere Rocky Shores

PLoS ONE, 2010

Latitudinal gradients in species abundance and diversity have been postulated for nearshore taxa ... more Latitudinal gradients in species abundance and diversity have been postulated for nearshore taxa but few analyses have been done over sufficiently broad geographic scales incorporating various nearshore depth strata to empirically test these gradients. Typically, gradients are based on literature reviews and species lists and have focused on alpha diversity across the entire nearshore zone. No studies have used a standardized protocol in the field to examine species density among sites across a large spatial scale while also focusing on particular depth strata. The present research used field collected samples in the northern hemisphere to explore the relationships between macroalgal species density and biomass along intertidal heights and subtidal depths and latitude. Results indicated no overall correlations between either estimates of species density or biomass with latitude, although the highest numbers of both were found at mid-latitudes. However, when strata were examined separately, significant positive correlations were found for both species numbers and biomass at particular strata, namely the intertidal ones. While the data presented in this paper have some limitations, we show that latitudinal macroalgal trends in species density and biomass do exist for some strata in the northern hemisphere with more taxa and biomass at higher latitudes.