Latest Species richness Stories
Ecologists are still arguing about the nature of the factors that determine the species composition of ecological communities.
The phrase "invasive plant species" typically evokes negative images such as broad swaths of kudzu smothered trees along the highway or purple loosestrife taking over wetlands and clogging waterwaysâ€”and as such, invasive plants are largely viewed as major threats to native biodiversity.
It's long been accepted by biologists that environmental factors cause the diversityâ€”or numberâ€”of species to increase before eventually leveling off.
Ask biologists how many species live in a pond, a grassland, a mountain range or on the entire planet, and the answers get increasingly vague. Hence the wide range of estimates for the planet's biodiversity, predicted to be between 2 million and 50 million species.
By Novack-Gottshall, Philip M Abstract.- The process of evolution hinders our ability to make large-scale ecological comparisons-such as those encompassing marine biotas spanning the Phanerozoic-because the compared entities are taxonomically and morphologically dissimilar.
The first full map of where the world's birds live reveals their diversity 'hotspots' and will help to focus conservation efforts.
- A woman chauffeur.
- A woman who operates an automobile.