|
|
|
| Registros recuperados: 10 | |
|
|
| Lambert, C.; Authier, M.; Doray, Mathieu; Doremus, G.; Spitz, J.; Ridoux, V.. |
| Most oceanographic systems, especially shelf ecosystems, are characterised by interannual variability in the timing, extent and intensity of their seasonal patterns. Such interannual variations have important consequences on top predator habitat preferences. Capitalising on oceanographic surveys performed every spring since 2004 in the Bay of Biscay (BoB), this study explored interannual variations in habitat preferences exhibited by five mobile top predator species: bottlenose and common dolphins, auks, fulmars and northern gannets. We expected to find species with similar habitat preferences every year or species exhibiting important variability in their habitat preferences. First, we identified with a Principal Component Analysis (PCA) three different... |
| Tipo: Text |
Palavras-chave: Habitat preference; Temporal variability; Cetaceans; Seabirds; North Atlantic; Bay of Biscay. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00431/54226/55549.pdf |
| |
|
|
| Jaureguizar,Andrés J.; Argemi,Federico; Trobbiani,Gastón; Palma,Elbio D.; Irigoyen,Alejo J.. |
| ABSTRACT Knowledge of the spatial and temporal distribution patterns of chondrichthyans is critical for their effective management. In this study we report and analyze a large-scale latitudinal migration (~ 1,425 km) of a female school shark in the Southwestern Atlantic shelf where it is currently classified as Critically Endangered. During the austral summer (February 15, 2015), ninety-four school sharks were captured (75 females and 19 males) and tagged with fin tags in Nuevo Gulf (~ 42°43’S, 64°53’W, Argentina). A female of 112 cm total length was recaptured in Uruguayan shelf waters in the austral winter (August 17, 2015). This long displacement represents the first direct evidence to support Vooren and Lucifora’s hypothesis of a single transnational... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Argentina-Brazil; Distribution pattern; Habitat preference; Migration; Shelf water. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000100201 |
| |
|
|
| Teresa,Fabrício Barreto; Casatti,Lilian. |
| We assessed the preference of 10 fish species for depth and velocity conditions in forested streams from southeastern Brazil using habitat suitability criteria (HSC curves). We also tested whether preference patterns observed in forested streams can be transferred to deforested streams. We used data from fish sampled in 62 five-meter sites in three forested streams to construct preference curves. Astyanax altiparanae, A. fasciatus, Knodus moenkhausii, and Piabina argentea showed a preference for deep slow habitats, whereas Aspidoras fuscoguttatus, Characidium zebra, Cetopsorhamdia iheringi, Pseudopimelodus pulcher, and Hypostomus nigromaculatus showed an opposite pattern: preference for shallow fast habitats. Hypostomus ancistroides showed a multimodal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Depth; Fish assemblages; Habitat preference; Riparian forest; Velocity. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000200395 |
| |
|
|
| Chande, A.I.; Mgaya, Y.D.. |
| Production, habitat preference and distribution of the blue swimming crab, Portunus pelagicus and the diversity of portunid crabs were studied along the Dar es Salaam coastline, Tanzania. Samples were obtained from beach seine nettings and basket traps. The samples from basket traps were used in habitat preference studies only. The production of Portunus pelagicus was assessed in terms of catch rate and biomass, and the biomass and contribution of recruits to the stock estimated using the Leslie method. Seasonal variations in catch rate were found, with peaks between December and May. The highest catch rate was recorded at Msasani Bay (2.24 kg/haul/100-m net), and the lowest at Mzinga Creek (1.08 kg/haul/100-m net). The harvestable biomass for Dar es... |
| Tipo: Journal Contribution |
Palavras-chave: Portunid crabs; Species diversity; Habitat preference; Crab culture. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/948 |
| |
|
| |
|
| |
|
|
| LESCRAUWAET,ANNE-CATHERINE; GIBBONS,JORGE; GUZMAN,LEONARDO; SCHIAVINI,ADRIAN. |
| Abundance of Commersons dolphin, Cephalorhynchus commersonii (Lacépède 1804), in the eastern portion of the Strait of Magellan was estimated by means of aerial transects in autumn (June 1996). Using a helicopter at 100 m altitude and 129 km h-1, 58 sightings representing 98 animals (average group size Es = 1.7, SD = 0.13) along 818.6 km of linear transects were recorded. Data analysis with "Distance" software gave a density estimation of 0.34 ind km-2 (CV = 0.27) and a population size of 1,206 (95% CI 711-2,049 individuals). Commersons dolphin showed a habitat preference for the narrows, compared to open waters in the study area. |
| Tipo: Journal article |
Palavras-chave: Commersons dolphin; Cephalorhynchus commersonii; Strait of Magellan; Line transect sampling; Habitat preference. |
| Ano: 2000 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000300010 |
| |
|
| |
|
|
| GAMA,MICHELLINY M. BENTES; VIEIRA,ABADIO H.; ROCHA,RODRIGO B.. |
| The aim of this study was to characterize the forest structure with H. flexuosa in Rondônia State, as a first step in developing sustainable harvest and conservation guidelines for the species. Crown attributes, total height (m) and diameter at breast height ≥ 10 (cm) of trees and palms with H. flexuosa were evaluated in three permanent plots (100 m x 150 m each) randomized in 219 ha. A total of 22 botanical families hosted H. flexuosa. It was not observed any specific preference for the species standing up itself. Nevertheless it was frequently associated to Burseraceae, Leguminosae, Sapotaceae, Annonaceae, Chrysobalanaceae, Apocynaceae, Moraceae and Myristicaceae and species with thick bark like Schweilera coriacea, Protium sp. and Licania membranaceae.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Non-timber forest product; Ecology; Plant fibers; Habitat preference; Multiple-use forest management. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000301117 |
| |
|
| |
| Registros recuperados: 10 | |
|
|
|
