13 documents found, page 1 of 2

Seminário "IDN Jovem" [IX]

Uncertainties in plant species niche modeling under climate change scenarios

Species distribution models (SDMs) have been used to forecast the impact of climate change on species’ potential distribution, with results that might support decisions for conservation and biodiversity management. Despite their vulnerability to parameterization and data quality input, SDM use has been increasing in the last decades. In fact, inappropriate inputs and the lack of awareness about the effects of m...

Species distribution modelling under climate change scenarios for maritime pine...

To date, a variety of species potential distribution mapping approaches have been used, and the agreement in maps produced with different methodological approaches should be assessed. The aims of this study were: (1) to model Maritime pine potential distributions for the present and for the future under two climate change scenarios using the machine learning Maximum Entropy algorithm (MaxEnt); (2) to update the...

Multitemporal land use and cover analysis coupled with climatic change scenario...

: Climate change and land use and land cover (LULC) change are impacting the species’ geographic distribution, causing range shifts and reducing suitable habitats. Asphodelus bento-rainhae subsp. bento-rainhae (AbR) is an endangered endemic plant restricted to Serra da Gardunha (Portugal), and knowledge of those changes will help to design conservation measures. MaxEnt was used to model AbR’s current distributi...

Big data help to define climate change challenges for the typical Mediterranean...

Climate change’s huge impact on Mediterranean species’ habitat suitability and spatial and temporal distribution in the coming decades is expected. The present work aimed to reconstruct rockrose (Cistus ladanifer L.) historical and future spatial distribution, a typically Mediterranean species with abundant occurrence in North Africa, Iberian Peninsula, and Southern France. The R ensemble modeling approach was ...

Prediction scenarios of past, present, and future environmental suitability for...

Climate change is a challenge for forests in the coming decades, with a major impact on species adaptation and distribution. The Mediterranean Basin is one of the most vulnerable hotspots for biodiversity conservation under climate change in the world. This research aimed at studying a Mediterranean species well adapted to the region: the Arbutus unedo L. (strawberry tree). The MaxEnt, a presence-only species-d...

The role of littoral cliffs in the niche delimitation on a microendemic plant f...

Obligate coastline taxa generally occupy very limited areas, especially when there is a close affinity with a specific coast type. Climate change can be a meaningful threat for them, reducing suitable habitat or forcing migration events. Cistus ladanifer subsp. sulcatus is an endemic plant of Portugal, known to occur only in the top of its south-western coast’s prominent cliffs. In spite of being included in th...

Present and future land suitability analysis for emerging fruit crops using spa...

In recent years there has been an increase of investment in so called emerging fruit crops. It is agreed that the choice of uses and practices best suited to soil and climate conditions promotes the sustainable use of rural areas, with positive economic impacts. The objective of this study is to determine the suitability of emerging fruit crops based on the analysis of the limiting factors. The suitability was ...

A influência da estrutura de uso na flora do Parque Natural do Tejo Internacion...

O PNTI estende-se por uma área de 26484 hectares no distrito de Castelo Branco, Portugal. A vegetação do Parque é característica de ecossistemas mediterrânicos, apresentando 726 táxones distribuídos por 98 famílias botânicas, incluindo 51 endemismos. O estudo pretendeu identificar a influência da utilização agrícola, pecuária e florestal do território na distribuição das espécies vegetais e na diversidade das c...

Ecological factors affecting plant communities’ distribution on International T...

Straddling the frontiers of two neighbouring countries around the Tagus River, Portugal and Spain, the International Tagus River Natural Park (ITRNP) extends over an area of 26,484 hectares in the district of Castelo Branco, Portugal. The vegetation of the Park is mainly typical of Mediterranean ecosystems, such as cork oak and holm oak, Mediterranean evergreen scrubland with strawberry tree, kerms oak, terebin...