Researchers mapped a cultural ecosystem service by identifying the key features that influence anglers’ enjoyment, such as environmental quality, accessibility, and fish abundance. Freshwater recreational fishing generates income, jobs, and funding for conservation. In 2011, more than 27 million people fished U.S. freshwaters, and Americans spent more than $41 billion on fishing-related equipment, licenses, transportation, and other activities. As a result, every state spends substantial public funds annually to support and manage freshwater recreational fishing.
For some birds, recognizing their own eggs can be a matter of life or death. In a new study, scientists have shown that many birds affected by the parasitic Common Cuckoo -- which lays its lethal offspring in other birds' nests -- have evolved distinctive patterns on their eggs in order to distinguish them from those laid by a cuckoo cheat.
A new study has shed new light on the use of mollusc shells as personal adornments by Bronze Age people. The research team used amino acid racemisation analysis (a technique used previously mainly for dating artefacts), light microscopy, scanning electron microscopy and Raman spectroscopy, to identify the raw materials used to make beads in a complex necklace discovered at an Early Bronze Age burial site at Great Cornard in Suffolk, UK.