Encontrados 23 documentos, a visualizar página 1 de 3
Patterns in estuarine macrofauna body size distributions: The role of habitat a...
Dolbeth, Marina; Raffaelli, Dave; Pardal, Miguel A.Schwinghamer's (1981) habitat architecture hypothesis for body mass spectra in marine sediments predicts a single macrofauna mode in response to the bulk nature of the sediment. This proposition was examined for intertidal macrofauna from a well-studied estuarine system, using kernel density estimation to define modality and the locations of peaks and troughs. Three sedimentary environments and habitats were ex...
Effects of local and large-scale climate patterns on estuarine resident fishes:...
Nyitrai, Daniel; Martinho, Filipe; Dolbeth, Marina; Rito, João; Pardal, Miguel A.Large-scale and local climate patterns are known to influence several aspects of the life cycle of marine fish. In this paper, we used a 9-year database (2003e2011) to analyse the populations of two estuarine resident fishes, Pomatoschistus microps and Pomatoschistus minutus, in order to determine their relationships with varying environmental stressors operating over local and large scales. This study was perf...
Influence of sex and age on PCBs accumulation in the commercial fish Chelon lab...
Baptista, Joana; Pato, Pedro; Tavares, Sílvia; Duarte, Armando C.; Pardal, Miguel A.Thicklip grey mullet, Chelon labrosus, is an important commercial fish species and has been studied worldwide. However, no recent studies have been made regarding polychlorinated biphenyls (PCBs) in wild C. labrosus. Due to that, the concentration of 13 PCBs congeners was measured in muscles and livers, of males and females, of C. labrosus of different ages, allowing the estimation of PCB bioaccumulation throug...
Effects of local and large-scale climate patterns on estuarine resident fishes:...
Nyitrai, Daniel; Martinho, Filipe; Dolbeth, Marina; Rito, João; Pardal, Miguel A.Large-scale and local climate patterns are known to influence several aspects of the life cycle of marine fish. In this paper, we used a 9-year database (2003–2011) to analyse the populations of two estuarine resident fishes, Pomatoschistus microps and Pomatoschistus minutus, in order to determine their relationships with varying environmental stressors operating over local and large scales. This study was perf...
Sandy beach macrofaunal communities on the western coast of Portugal - Is there...
Gonçalves, Sílvia C.; Anastácio, Pedro M.; Pardal, Miguel A.; Cardoso, Patrícia G.; Ferreira, Susana M.; Marques, João C.http://www.sciencedirect.com/science/article/B6WDV-4V4VYC0-2/2/c968e2b21c463c15e0eaf55b40b10a1a
Spatial and temporal patterns of benthic invertebrates in the Tagus estuary, Po...
França, Susana; Vinagre, Catarina; Pardal, Miguel A.; Cabral, Henrique N.Intertidal mudflats are a dominant feature in many estuarine systems and may be a significant component of the feeding grounds available for many fish and bird species. Therefore, it is crucial to determine the importance and role that this particular habitat plays for the different estuarine communities. Spatial and temporal dynamics of macrobenthic communities in an intertidal mudflat of the Tagus estuary wer...
Heavy metal accumulation in Halimione portulacoides: Intra- and extra-cellular ...
Sousa, Ana I.; Caçador, Isabel; Lillebø, Ana I.; Pardal, Miguel A.Salt marsh plants can sequestrate and inherently tolerate high metal concentrations found in salt marsh sediments. This work intended to understand the Halimione portulacoides (L.) Aellen strategies to prevent metal toxicity, by investigating the metal location in different plant organs and in the cell. A sequential extraction was performed on leaves, stems and roots of H. portulacoides in order to determine an...
Contribution of Spartina maritima to the reduction of eutrophication in estuari...
Sousa, Ana I.; Lillebø, Ana I.; Caçador, Isabel; Pardal, Miguel A.http://www.sciencedirect.com/science/article/B6VB5-4T4WM2P-1/2/39c53246a441c97ea5fb560b5d7dd93a
Mudflat nekton assemblages in the Tagus estuary (Portugal): distribution and fe...
França, Susana; Pardal, Miguel A.; Cabral, Henrique A.Mudflats are an important component of estuaries, where they may occupy large areas and provide feeding and nursery grounds for many fish and bird species, as in the Tagus estuary. However, knowledge on their role and functioning is still expanding. Spatial and temporal dynamics of nekton assemblages in a mudflat of the Tagus estuary were evaluated to determine their role in the estuarine functioning. Feeding a...
Monitorização da Hidrodinâmica e da Qualidade da Água no Estuário do Rio Mondego
Duarte, António A. L. S.; Vieira, José M. P.; Neto, João M.; Pardal, Miguel A.A hidrodinâmica dos sistemas estuarinos favorece a retenção de nutrientes, sustentando uma actividade biológica intensa, facto que potencia o desenvolvimento das comunidades ribeirinhas e intensifica o stress ambiental sobre estes ecossistemas aquáticos. No caso do estuário do rio Mondego, além das actividades portuária, balnear, industrial e de exploração de recursos marinhos, a orizicultura surge como a activ...
| Financiadores do RCAAP | |||||||
|
|
|
|
|
|
||