Sedge-Warblers Seizing Butterflies

Adaptive settlement in sedge warblers Acrocephalus schoenobaenus—focus on the scale of individuals

Breeding site selection can be linked to population dynamics through pre-emptive site selection, by which an individual selects the best (in terms of fitness) available site, preventing others from sharing it. We examined the pattern of territorial settlement and its fitness consequences during a study of sedge warblers Acrocephalus schoenobaenus inhabiting two study plots in the Nida Wetlands ...

Blood parasite infestation and the leukocyte profiles in adult and immature reed warblers (Acrocephalus scirpaceus) and sedge warblers (Acrocephalus schoenobaenus) during autumn migration

Haemoparasites prevalence in birds can vary among species, age and sex groups and ecological conditions. To comprehend the host–parasite assemblages, it is important to investigate physiological mechanisms underlying the interactions in wild bird species. Here, using blood smears we investigated how leukocyte profiles in reed warblers (Acrocephalus scirpaceus) and sedge warblers (Acrocephalus s...

Hominins living on the sedge.

T he evolution of C4 photosynthesis was a signal shift in the history of life on Earth, including at least 50 independent origins in 19 families of higher plants (1). Today, C4 plants account for a quarter of the primary productivity on the planet despite representing a small fraction (∼3%) of the estimated 250,000 land plant species (2). Most C4 plants are grasses (family Poaceae, 4,500 specie...

Seizing the Digitalization Opportunity

Seizing the Demographic Dividend

One of the reasons for tightly regulating apprenticeships was to prevent companies from hiring cheap labour under the guise of an apprenticeship programme. A simpler set of provisions to streamline regulation and incentivize corporates while protecting the interest and well-being of apprentices may now be needed. How can it be made to work? The rules and regulations overseeing apprenticeships n...