The chemical composition of the waters quarry lakes formed as a result development Zavitinskoye lithium-beryllium deposit located in Eastern Transbaikalia (Russia) has been studied. studied ore pits are fresh with neutral and slightly alkaline reaction, mainly magnesium-calcium sulfate type. It was found that contain high concentrations lithium (Li) strontium (Sr), isolated cases arsenic (As). ...

In the diet of raptors the presence of prey-species is influenced by their abundance and the ground-level vegetation in territories, this situation being analysed for the Bonelli s eagle (Hieraaetus fasciatus) in south-eastern Spain. First, the minimum number of prey-items for the reliability of results was tested, obtaining between 15 and 30 prey-items depending of pair. Second, differences in...

Black rats ( Rattus rattus ) and their stomach nematodes (Mastophorus muris) were historically introduced to islets at Palmyra Atoll in the central Pacific Line Islands. To investigate patterns of parasitism, we trapped rats and quantified nematodes on 13 islets of various sizes and habitat types. Most rats were parasitized (59%) with an average of 12 worms per infected rat. Islet size did not ...

Distribution patterns of stress-tolerant coral symbionts suggest that maximum habitat temperatures can drive local scale adaptation of symbiont populations, but at regional scales other processes can dominate. We assayed clade membership for symbionts of 2 closely related corals from American Samoa, Fiji, the Philippines and Palmyra Atoll. Temperature stress-tolerant Clade D symbionts occur mor...

Territorial behavior is often found in nature. Coyotes and wolves organize themselves around a den site and mark their territory to distinguish their claimed region. Moorcroft et al. model the formation of territories and spatial distributions of coyote packs and their markings in [33]. We modify this ecological approach to simulate spatial gang dynamics in the Hollenbeck policing division of e...

Background: The Ural region is highlighted among other Russian regions for its unfavorable radiation situation and complexity of the overall environmental situation. The source of man-made radioactive contamination is the work of the "Mayak" Production Association. A significant radioactive contamination has happened as a result of several radiation incidents in the early period ...

A growing body of evidence shows that female birds use male plumage coloration as an important criterion in mate choice. In the field, however, males with brighter coloration may both compete better for high quality territories and be the object of female choice. Positive associations between territory quality, male-male competitive ability, and female preferences can make it difficult to deter...

Herbivorous fishes are being increasingly valued for their ecological function in coral reef systems, and consequently they have become the focus of management actions on many reefs around the world. Because many conservation actions require an understanding of the space use patterns of species of interest, there has been an increased effort in recent years to study the movement patterns and ho...