نتایج جستجو برای: island structure
تعداد نتایج: 1618707 فیلتر نتایج به سال:
Hydrothermal vents represent a unique habitat in the marine ecosystem characterized with high water temperature and toxic acidic chemistry. Vents are distributed at depths ranging from a few meters to several thousand meters. The biological communities of shallow-water vents have, however, been insufficiently studied in most biogeographic areas. We attempted to characterize the macrofauna and m...
the larsemann hills range is an ice-free oasis on the ingrid christensen coast of princess elizabeth land, east antarctica, which includes bharti island, fisher island, mcleod island, broknes peninsula, stornes peninsula, and several other islands, promontories, and nunataks. the larsemann hills is an ice-free area of approximately 50 km2, located halfway between the vestfold hills and the amer...
background: qeshm (26.75n, 55.82e), iran, is 1500 km² island in the strait of hormuz. qeshm is a free trade zone, acting as an important channel for international commerce, and has been the site of much recent development. there is potential risk of stinging ant attacks for residents and visitors that may occur in the island. the aims of this study were to find out the fauna, dispersion, and so...
Ship rats (Rattus rattus) were removed from sites on Pearl Island, southern Stewart Island, in 2004 and 2005, to test whether they excluded Pacific rats (R. exulans) or Norway rats (R. norvegicus) or both from podocarp-broadleaf forest. As predators can influence habitat use in rodents, Pearl Island was selected because no mammalian predators of rodents are present. Rats were trapped in two oth...
1 widespread island endemic, the San Clemente Island night lizard. ABSTRACT 17 Habitat fragmentation and loss are fundamental conservation concerns. Because protected 18 areas are often " habitat islands " isolated by human development, studies of physical islands 19 which document genetic patterns associated with natural versus anthropogenic fragmentation may 20 provide insight into the manage...
A genomic island was identified in the Haemophilus influenzae biogroup aegyptius Brazilian purpuric fever (BPF) strain F3031. This island, which was also found in other BPF isolates, could not be detected in non-BPF biogroup aegyptius strains or in nontypeable or typeable H. influenzae strains, with the exception of a region present in the type b Eagan strain. This 34,378-bp island is inserted,...
The mesoscale structure of the low-level flow and the character of the turbulence are investigated for a warm front as it approached the prominent terrain of the Pacific Northwest in the vicinity of Vancouver Island. Flightlevel and airborne Doppler radar measurements collected from a National Oceanic and Atmospheric Administration P-3 research aircraft on 9 December 1995 during the Coastal Obs...
High elevation montane areas are called "sky islands" when they occur as a series of high mountains separated by lowland valleys. Different climatic conditions at high elevations makes sky islands a specialized type of habitat, rendering them naturally fragmented compared to more continuous habitat at lower elevations. Species in sky islands face unsuitable climate in the intervening valleys wh...
Seabirds are considered highly mobile, able to fly great distances with few apparent barriers to dispersal. However, it is often the case that seabird populations exhibit strong population genetic structure despite their potential vagility. Here we show that Galapagos Nazca booby (Sula granti) populations are substantially differentiated, even within the small geographic scale of this archipela...
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