Content with tag pomacea spp .

Predictors of pollinator service

Pollinator service is essential for successful sexual reproduction and long?term population persistence of animal?pollinated plants, and innumerable studies have shown that insufficient service by pollinators results in impaired sexual reproduction (“pollen limitation”). Studies directly addressing the predictors of variation in pollinator service across species or habitats remain comparatively scarce, which limits our understanding of the primary causes of natural variation in pollen...

Feature: Saving the Spanish Imperial Eagle in Doñana

Feature: Saving the Spanish Imperial Eagle in Doñana The "Espacio Protegido" program of Canal Sur Television December 17, 2019, shows how managers of the Doñana Natural Area and EBD-CSIC researchers work together on the "Recovery Plan of the Spanish...

Angiosperm seeds lacking external flesh can be adapted for endozoochory

It is often assumed that only plants with a fleshy fruit disperse inside vertebrate guts, i.e. by “endozoochory”. However, only 8% of European angiosperms have a fleshy fruit, and endozoochory of other plants by herbivorous or granivorous birds and mammals is widespread in nature. Many terrestrial and aquatic plants disperse via endozoochory by migratory waterbirds, providing long-dispersal dispersal.

Less abundant animal and plant species gather in ghettos in order to survive

According to the competitive exclusion principle, species with low competitive abilities should be excluded by more efficient competitors; yet, they generally remain as rare species. The positive and negative spatial association networks of 326 disparate assemblages was described showing a general organization pattern that simultaneously supports the primacy of competition and the persistence of rare species.

Nocturnal birds could communicate through the fluorescence of their feathers

Many nocturnal animals, including invertebrates such as scorpions and a variety of vertebrate species, including toadlets, flying squirrels, owls, and nightjars, emit bright fluorescence under ultraviolet light. However, the ecological significance of this unique coloration so attached to nocturnality remains obscure. An intensively studied population of migratory red-necked nightjars (Caprimulgus ruficollis) was used to investigate inter-individual variation in porphyrin-based pink...