CIMO - Posters em Encontros Científicos Nacionais
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- Carbon sequestration in chestnut coppices: impact of shoot density simulated with the CO2Fix modelPublication . Patrício, Maria Sameiro; El Baine, Chaimae; Nunes, LuísThe carbon cycle plays a vital role in maintaining ecosystem stability by regulating the flow of organic matter and influencing global climate dynamics. However, rising CO₂ emissions from human activities have disrupted this balance, driving climate change and increasing the frequency of extreme weather events. Addressing this challenge requires strengthening natural carbon sinks, particularly forests, which store significant amounts of carbon in both biomass and soils. Sweet chestnut (Castanea sativa Mill.) coppice systems are promising for carbon sequestration due to their fast growth and potential for long-term carbon storage. Despite their ecological importance, many chestnut coppices remain unmanaged due to limited economic returns. Innovative strategies, such as payments for ecosystem services, could unlock their potential and enhance their contribution to climate change mitigation while promoting sustainable forest management.This study assesses the carbon sequestration and storage potential of sweet chestnut coppices using the CO₂FIX model, calibrated with field data from northeastern Portugal. The main objectives are to: Calibrate the CO₂FIX model to predict biomass and carbon stocks under different management practices. Validate model accuracy by comparing simulations with observed field data. Optimize parameterization to improved reliability for chestnut coppice systems. Identify growth constraints to support sustainable management strategies.
- Lipoptena fortisetosa (Diptera: Hippoboscidae) in a Red Deer in the Center of PortugalPublication . Rodrigues, Isabel; Martins, Filipa; Mateus, Teresa LetraDeer keds (Insecta: Diptera: Hippoboscidae: Lipoptena spp.) are haematophagous ectoparasites of wild as well as domestic animals, being most often associated with cervids, but also can infest Bovidae (cattle, goats, chamois, mouflon, antelopes, etc.), and occasionally humans. Upon finding a suitable mammal host, deer keds shed their wings, remaining in a wingless form for the rest of their life. These flies are viviparous species and they generate a larvae that falls to the ground and pupates. In severe infestations, these ectoparasites can be responsible for dermatitis, allergic rhinoconjunctivitis, and in extreme cases, anaphylactic shock when they bite humans. They also potential vectors of several pathogens such as Babesia spp.,Theileria spp., Bartonella spp., Coxiella spp. and Anaplasma spp. Of over 30 species of Lipoptena insects worldwide, two of the six known species in Europe, Lipoptena cervi along with L. fortisetosa, are known to have a relatively wide distribution. We report for the first time, the presence of L. fortisetosa in a red deer (Cervus elaphus) in Castelo Branco district, in the Center of Portugal. Lipoptena fortisetosa was probably introduced in Europe with sika deer from the Eastern Palaearctic and is continuously expanding its range, especially in the Southern part of Europe. There are pertinent morphological differences between the two species, that must be taken in account to facilitate their accurate identification, among others, the external features of the head and antennae, features on the thorax, number and distribution of bristles, and in the external genitalia. This new finding may represent a new challenge to the epidemiology of this species in Portugal, and to the health of its wide range hosts, particularly because it can transmit several disease-causing pathogens to animals, as well as to humans. Further investigations are worthy of attention on Lipoptena species, in Portugal, with a One Health perspective.