Encontrados 5 documentos, a visualizar página 1 de 1
Does afforestation increase bird nest predation risk in surrounding farmland?
Reino, Luis; Porto, Miguel; Morgado, Rui; Carvalho, Filipe; Mira, António; Beja, PedroAfforestation of agricultural land is increasingly used to deliver environmental benefits, but their effects on biodiversity remain poorly understood. This paper tests the hypothesis that afforestation changes predation processes in surrounding farmland, examining how the characteristics and landscape context of forest plantations affect predator (birds and mammalian carnivores) and key prey (rabbits and hares) ...
Effects of changed grazing regimes and habitat fragmentation on Mediterranean g...
Reino, Luís; Porto, Miguel; Morgado, Rui; Moreira, Francisco; Fabião, António; Santana, Joana; Delgado, Ana; Gordinho, Luís; Cal, João; Beja, PedroIn Iberian cereal-steppes, decoupling of payments from current production levels through the Single Farm Payment raised concerns regarding the potential for land abandonment and replacement of sheep by cattle, with eventual negative consequences for declining grassland birds. This study addressed this issue by analysing the responses of five grassland bird species of conservation concern to spatial land use gra...
Using survival regression to study patterns of expansion of invasive species: w...
Reino, Luís; Moya-Laraño, Jordi; Heitor, António CláudioDifferent approaches can be used to model the spread of invasive species. Here we demonstrate the use of survival regression, an approach that can be used to study a variety of events, not just death, to model the time to colonization. The advantage of survival regression to study colonisation of new areas is that information on those areas that have not been invaded by the end of a study can be included in the...
Farmland bird response to land use changes: the role of habitat fragmentation
Reino, Luís Miguel Nunes Valente AfonsoDoutoramento em Engenharia Florestal - Instituto Superior de Agronomia ; Socioeconomical changes from recent decades in Mediterranean farmland habitats have caused the abandonment of less fertile arable land in many regions. Together, these relatively recent changes in land use patterns have progressively resulted in the loss and fragmentation of many arable habitats for farmland birds. In this thesis I evalua...
Distance to edges, edge contrast and landscape fragmentation: interactions affe...
Fabião, António; Reino, Luís; Osborne, Patrick E.; Beja, Pedro; Morgado, Rui; Rotenberry, John T.Afforestation often causes direct habitat losses for farmland birds of conservation concern, but it is uncertain whether negative effects also extend significantly into adjacent open land. Information is thus required on how these species react to wooded edges, and how their responses are affected by edge and landscape characteristics. These issues were examined in Mediterranean arable farmland, using bird coun...
| Financiadores do RCAAP | |||||||
|
|
|
|
|
|
||