6 documents found, page 1 of 1
Using citizen science data for predicting the timing of ecological phenomena ac...
Capinha, César; Ceia-Hasse, Ana; de-Miguel, Sergio; Vila-Viçosa, Carlos; Porto, Miguel; Jarić, Ivan; Tiago, Patricia; Fernández, Néstor; Valdez, JoseThe scarcity of long-term observational data has limited the use of statistical or machine-learning techniques for predicting intraannual ecological variation. However, time-stamped citizen-science observation records, supported by media data such as photographs, are increasingly available. In the present article, we present a novel framework based on the concept of relative phenological niche, using machine-le...
Using citizen science data for predicting the timing of ecological phenomena ac...
Capinha, César; Ceia-Hasse, Ana; de-Miguel, Sergio; Vila-Viçosa, Carlos; Porto, Miguel; Jarić, Ivan; Tiago, Patrícia; Fernández, Néstor; Valdez, JoseThe scarcity of long-term observational data has limited the use of statistical or machine-learning techniques for predicting intraannual ecological variation. However, time-stamped citizen-science observation records, supported by media data such as photographs, are increasingly available. In the present article, we present a novel framework based on the concept of relative phenological niche, using machine-le...
Beta diversity patterns reveal positive effects of farmland abandonment on moth...
Dantas de Miranda, Murilo; Pereira, Henrique Miguel; Corley, Martin F.V.; Merckx, ThomasFarmland abandonment and the accompanying natural succession are largely perceived as unwanted amongst many European conservationists due to alleged negative effects on biodiversity levels. Here, we test this assumption by analysing alpha, beta and gamma diversity patterns of macro-moth communities in habitats on an ecological succession gradient, from extensively managed meadows to scrub-encroached and wooded ...
Species traits shape the relationship between local and regional species abunda...
Dantas de Miranda, Murilo; Borda-de-Água, Luís; Pereira, Henrique Miguel; Merckx, ThomasThe species abundance distribution (SAD) depicts the relative abundance of species within a community, which is a key concept in ecology. Here, we test whether SADs are more likely to either follow a lognormal-like or follow a logseries-like distribution and how that may change with spatial scale. Our results show that the shape of SADs changes from logseries-like at small, plot scales to lognormal-like at larg...
Mate choice drives evolutionary stability in a hybrid complex
Morgado-Santos, Miguel; Pereira, Henrique Miguel; Vicente, Luís; Collares-Pereira, Maria JoãoPrevious studies have shown that assortative mating acts as a driver of speciation by countering hybridization between two populations of the same species (pre-zygotic isolation) or through mate choice among the hybrids (hybrid speciation). In both speciation types, assortative mating promotes speciation over a transient hybridization stage. We studied mate choice in a hybrid vertebrate complex, the allopolyplo...
Biodiversity offsets: from current challenges to harmonized metrics
Gonçalves, Bárbara; Marques, Alexandra; Velho Da Maia Soares, Amadeu Mortágua; Pereira, Henrique MiguelBiodiversity offsets are compensatory mechanisms increasingly used to address ecological impacts resulting from human activities. We review the scientific literature on biodiversity offsets, published between 1999 and 2014. We found that biodiversity offset studies have increased through time. The majority of studies have been carried out in the USA. The development of biodiversity offsets schemes faces concept...