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Pedro Miguel Valente Raposeiro
Investigador

My PhD aimed to improve scientific knowledge of insular lotic systems, providing an inventory and spatiotemporal analyses of the benthic macroinvertebrate community, identifying the main environmental factors responsible for observed variations, giving emphasis to the chironomid community.

Currently research focus on the paleolimnology and paleoecology on oceanic islands aiming to study past climate and environmental changes and their causes, with a focus on human impact. These natural environmental archives include lake sediments and peat bogs sampled and analysed using a multiproxy approach (e.g. classical as well as cutting-edge proxies) allowing the reconstruction of past environmental changes (e.g. climatic, volcanic and anthropogenic change) and ecosystem processes (e.g. food web changes following the introduction of top predators, methane cycling in lakes). In the area of Paleoecology it has established several international networks, leading to the publication of several scientific articles in international journals, and the integration in teams in international, national and regional projects.

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Publicações

Hernandez, A., Saez, A., Bao, R., Raposeiro, P.M., Trigo, R.M., Doolittle, S., et al. (2017). The influences of the AMO and NAO on the sedimentary infill in an Azores Archipelago lake since ca. 1.350 CE. Global and Planetary Change, 154, 61-74.
Raposeiro, P.M., Rubio, M.J., Gonzalez, A., Hernandez, A., Sanchez-Lopez, G., Vazquez-Loureiro, D., et al. (2017). Impact of the historical introduction of exotic fishes on the chironomid community of Lake Azul (Azores Islands). Palaeogeography Palaeoclimatology Palaeoecology, 466, 77-88.
Ferreira, V., Raposeiro, P.M., Pereira, A., Cruz, A.M., Costa, A.C., Graca, M.A.S., et al. (2016). Leaf litter decomposition in remote oceanic island streams is driven by microbes and depends on litter quality and environmental conditions. Freshwater Biology, 61, 783-799.
Goncalves, V., Marques, H.S. & Raposeiro, P.M. (2015). Diatom assemblages and their associated environmental drivers in isolated oceanic island streams (Azores archipelago as case study). Hydrobiologia, 751, 89-103.
Raposeiro, P.M., Martins, G.M., Moniz, I., Cunha, A., Costa, A.C. & Goncalves, V. (2014). Leaf litter decomposition in remote oceanic islands: The role of macroinvertebrates vs. microbial decomposition of native vs. exotic plant species. Limnologica, 45, 80-87.