Encontrados 29 documentos, a visualizar página 1 de 3
Conservation of limpet populations: a heavily exploited resource in Azores, NE-...
Faria, João; Ribeiro, Pedro; Martins, Gustavo M.; Rivas, Manuel; Hawkins, Stephen J.; Presa, Pablo; Neto, Ana I.10th International Temperate Reefs Symposium, The University of Western Australia, 12-17 de janeiro. ; Limpet harvesting in Azores (NE Atlantic) has been taking place probably since the islands were first colonized in the XV century. Limpet species are highly exploited and populations from most islands have declined steadily bringing about catastrophic effects on coastal communities. Despite their economic imp...
Effects of coastal orientation and depth on the distribution of subtidal benthi...
Martins, Gustavo M.; Patarra, Rita F.; Álvaro, Nuno V.; Prestes, Afonso L.; Neto, Ana I.Copyright © 2013 Blackwell Verlag GmbH. ; A better understanding of biological systems can only be gained if we understand what processes are important and how they operate to determine the distribution of organisms. Coastal orientation and depth can influence environmental conditions, including the degree of water motion and availability of light, which in turn may influence the horizontal and vertical patter...
Population structure in high shore littorinids: contrast between riprap and roc...
Martins, Gustavo M.; Prestes, Afonso L.; Neto, Ana I.World Congress of Malacology, Ponta Delgada, July 22-28, 2013. ; The number of anthropogenic structures deployed in coastal areas has increased markedly in recent times and many studies have now shown that these structures seldom mimic the natural habitais they replace. To date, however, most such studies have focused on the numbers and relative abundance of species and little is known about how these structur...
Temporal variation in reproductive phenology of Patella spp.: past and present.
Vale, Maria; Ribeiro, Pedro; Golbold, J.; Neto, Ana I.; Martins, Gustavo M.; Hawkins, Stephen J.World Congress of Malacology, Universidade dos Açores, Ponta Delgada, 21-28 de julho. ; Global changes occurring in the biogeochemistry o f the oceans may influence the ecology of the biota. There is evidence that species are reacting to changes in climate through variations in the abundance and phenology with many species showing a poleward shift in their distributional range. The rocky intertidal is a relati...
Shells of the limpet Patella aspera as habitat for epibionts
Faria, João; Martins, Gustavo M.; Furtado, Miguel; Neto, Ana I.World Congress of Malacology, Universidade dos Açores, Ponta Delgada, 21-28 de julho. ; Although limpets can control the abund ance and distribution of algae and other organisms, their shells can offer a refuge for the establishment of diverse assemblage that would otherwise be excluded. In this study, we make a preliminary analysis of the epibiota growing on shells of the limpet Patella aspern. Individuals of...
Shell variation in Patellid limpets: scales of spatial variability
Martins, Gustavo M.; Faria, João; Furtado, Miguel; Enes, Manuel; Neto, Ana I.World Congress of Malacology, Universidade dos Açores, Ponta Delgada, 21-28 de julho. ; Species o f the genera Patella generally display a high degree of shell variation, which is thought to be an adaptation to environmental conditions. The present work examines the variation in the morphometry of the two patellid limpets present in the Azores (Patella candei and P. aspera) at multiple spatial scales. Individu...
Avaliação do stock de Abalones: uma pesca sustentável
Prestes, Afonso L.; Neto, Ana I.; Rodrigues, Armindo; Martins, Gustavo M.Jornadas "Ciência nos Açores – que futuro? Tema Ciências Naturais e Ambiente", Ponta Delgada, 7-8 de Junho de 2013. ; A falta de informação anterior ao início de uma exploração de uma espécie alvo é ponto comum à maior parte das pescarias. A maioria dos estudos só é iniciada após indícios claros de efeitos de um excesso de pesca. No entanto, esta situação é indicadora de que a pesca já causou alterações drásti...
Development and characterization of microsattelite Loci for the harvested limpe...
Rivas, Manuel; Faria, João; Ribeiro, Pedro; Presa, Pablo; Martins, Gustavo M.; Neto, Ana I.World Congress of Malacology, Ponta Delgada, July 22-28, 2013. ; There is growing consensus that anthropogenic activities are impacting the structure and functioning of marine ecosystems and that these can have profound community level effects, particularly when targeting keystone species. Limpet harvesting in Azores (NE Atlantic) has been taking place probably since the islands were first colonized. These spe...
Evidence of long-term changes in the distribution of key intertidal species
Vale, Maria; Neto, Ana I.; Martins, Gustavo M.; Hawkins, Stephen J.World Congress of Malacology, Ponta Delgada, July 22-28, 2013. ; Globally, changes are occurring in the biogeochemistry and ecology of the oceans, which may influence the physiology, phenology, and species distribution. Biological communities are reacting to climate change through changes in the abundance and phenology of the organisms and through the poleward shift in species distribution. Rocky shores are re...
Effects of Fishing and Regional Species Pool on the Functional Diversity of Fis...
Martins, Gustavo M.; Arenas, Francisco; Neto, Ana I.; Jenkins, Stuart R.Copyright © 2012 Martins et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. ; The potential population and community level impacts of fishing have received considerable attention, but little is known about how fishing inf...
| Financiadores do RCAAP | |||||||
|
|
|
|
|
|
||