10 documents found, page 1 of 1

Past and future climate effects on population structure and diversity of North ...

Understanding the impacts of past and future climate change on genetic diversity and structure is a current major research gap. We ask whether past range shifts explain the observed genetic diversity of surfgrass species and if future climate change projections anticipate genetic diversity losses. Our study aims to identify regions of long-term climate suitability with higher and unique seagrass genetic diversi...

Past climate-driven range shifts structuring intraspecific biodiversity levels ...

The paradigm of past climate-driven range shifts structuring the distribution of marine intraspecific biodiversity lacks replication in biological models exposed to comparable limiting conditions in independent regions. This may lead to confounding effects unlinked to climate drivers. We aim to fill in this gap by asking whether the global distribution of intraspecific biodiversity of giant kelp (Macrocystis py...

Individual-based genetic analyses support asexual hydrochory dispersal in Zoste...

Dispersal beyond the local patch in clonal plants was typically thought to result from sexual reproduction via seed dispersal. However, evidence for the separation, transport by water, and re-establishment of asexual propagules (asexual hydrochory) is mounting suggesting other important means of dispersal in aquatic plants. Using an unprecedented sampling size and microsatellite genetic identification, we descr...

A justiça portuguesa e a sociedade da informação: os sistemas de informação do ...

Hoje, a sociedade em rede é uma realidade e os sistemas de informação ocupam um papel fundamental no desempenho das organizações, independentemente da sua missão. A nossa investigação propõe-se analisar a implementação, no Ministério Público Português, do projecto Sistema de Informação do Ministério Público, um processo de profunda mudança organizacional com a adopção de novas metodologias de trabalho.

Genes left behind: Climate change threatens cryptic genetic diversity in the ca...

The global redistribution of biodiversity will intensify in the coming decades of climate change, making projections of species range shifts and of associated genetic losses important components of conservation planning. Highly-structured marine species, notably brown seaweeds, often harbor unique genetic variation at warmer low-latitude rear edges and thus are of particular concern. Here, a combination of Ecol...

Microsatellite markers for the Arctic copepod Calanus glacialis and cross-ampli...

Calanus glacialis is a major component of Arctic zooplankton and a keystone species in Arctic marine ecosystems. Due to the observed climate warming, its numbers are being reduced to the advantage of a sibling Atlantic species Calanus finmarchicus. We developed and characterized the first set of microsatellite markers in this species to investigate its population genetic structure and dispersal capabilities. Ni...

A Sociedade de Informação, a Justiça e os Sistemas de Informação do Ministério ...

Characterization of ten highly polymorphic microsatellite loci for the intertid...

The brown mussel Perna perna (Linnaeus, 1758) is a dominant constituent of intertidal communities and a strong invader with multiple non-native populations distributed around the world. In a previous study, two polymorphic microsatellite loci were developed and used to determine population-level genetic diversity in invasive and native P. perna populations. However, higher number of microsatellite markers are r...

Habitat continuity and geographic distance predict population genetic different...

Isolation by distance (IBD) models are widely used to predict levels of genetic connectivity as a function of Euclidean distance, and although recent studies have used GIS-landscape ecological approaches to improve the predictability of spatial genetic structure, few if any have addressed the effect of habitat continuity on gene flow. Landscape effects on genetic connectivity are even less understood in marine ...

Age and growth of the squid Loligo vulgaris off the south coast of Portugal, us...

Age composition and growth rates of the squid Loligo vulgaris (Lamark, 1797) were studied by examination of growth increments within statoliths of 419 specimens (mantle length, ML, ranging from 32 to 400 mm). The squid were obtained by monthly sampling from the catches of commercial trawls off southern Portugal between March and September, 1993. The total number of growth increments in the mounted and ground st...