نتایج جستجو برای: island structure

تعداد نتایج: 1618707  

Journal: :Trends in ecology & evolution 2015
Timothy E Farkas Andrew P Hendry Patrik Nosil Andrew P Beckerman

Current research on eco-evolutionary dynamics is mainly concerned with understanding the role of rapid (or 'contemporary') evolution in structuring ecological patterns. We argue that the current eco-evolutionary research program, which focuses largely on natural selection, should be expanded to more explicitly consider other evolutionary processes such as gene flow. Because multiple evolutionar...

2015
Patrick Weigelt W. Daniel Kissling Yael Kisel Susanne A. Fritz Dirk Nikolaus Karger Michael Kessler Samuli Lehtonen Jens-Christian Svenning Holger Kreft

Islands are ideal for investigating processes that shape species assemblages because they are isolated and have discrete boundaries. Quantifying phylogenetic assemblage structure allows inferences about these processes, in particular dispersal, environmental filtering and in-situ speciation. Here, we link phylogenetic assemblage structure to island characteristics across 393 islands worldwide a...

Journal: :iranian journal of pediatric surgery 0
mansour mollaean bahrami children's hospital, tehran university of medical sciences, tehran, iran. houshang pourang bahrami children's hospital, tehran university of medical sciences, tehran, iran farid eskandari bahrami children's hospital, tehran university of medical sciences, tehran, iran hojatollah raji bahrami children's hospital, tehran university of medical sciences, tehran, iran

introduction: providing the material for penile reconstruction after release of chordee associated with hypospadias is challenging. we have used the preputial vascularized island flap for this purpose. we report the results of this prospective study. materials and methods: one hundred and twelve boys ranging from 13 months to 12 years of age were enrolled in this study. the location of meatus r...

Journal: :Molecular ecology 2006
Nusha Keyghobadi Dennis Lapointe Robert C Fleischer Dina M Fonseca

The southern house mosquito, Culex quinquefasciatus, is a widespread tropical and subtropical disease vector. In the Hawaiian Islands, where it was introduced accidentally almost two centuries ago, it is considered the primary vector of avian malaria and pox. Avian malaria in particular has contributed to the extinction and endangerment of Hawaii's native avifauna, and has altered the altitudin...

Journal: :Current Biology 2013
Robert F. Lachlan Machteld N. Verzijden Caroline S. Bernard Peter-Paul Jonker Bram Koese Shirley Jaarsma Willemijn Spoor Peter J.B. Slater Carel ten Cate

Cultural transmission can increase the flexibility of behavior, such as bird song. Nevertheless, this flexibility often appears to be constrained, sometimes by preferences for learning certain traits over others, a phenomenon known as "biased" learning or transmission. The sequential colonization of the Atlantic Islands by the chaffinch (Fringilla coelebs) provides a unique model system in whic...

Journal: :Molecular ecology 2006
Scott R Santos

Anchialine habitats, landlocked bodies of mixohaline water that fluctuate with the tides but have no surface connection to the sea, are known from around the world. Many anchialine organisms have widespread distributions and it has been hypothesized that high levels of gene flow and low levels of genetic differentiation are characteristic of populations from these habitats. However, the general...

J. Ghoddousi, M. Zarei, M.S. Mortazavi, S.M.R. Fatemi, Sh. Pour Ebrahim,

The economic growth of aquaculture and the dependence of a large growing population on coastal resources have led to coastal degradation and reduced resources. In this paper while realizing the potential capacities of the island systems,  the aquaculture activities of the island are specially discussed  in the framework of Integrated Coastal Zone Management (ICZM). Therefore, in this study, fir...

2009
Yoshiaki Orihara Masashi Kamogawa Toshiyasu Nagao Seiya Uyeda

Nearly twenty anomalous geoelectric field changes were observed before earthquakes at Kozu-shima Island, Japan, from 1997 to 2000. In order to help locating the current sources of the observed anomalous changes, a bipole-dipole resistivity survey was conducted. From the resistivity survey, including current injection into the ground, it was found that various features of the anomalous changes w...

Journal: :Jurnal Natural 2021

The Dipterocarpaceae family is one of the identified plant groups with high conservation value that exist in Weh Island Nature Tourism Park. However, data availability on species diversity and population structure island particular Aceh general still very limited. Thus, it necessary to conduct studies from Island. This study aims obtain abundance diversity, composition each stratum, structure, ...

2016
Sergio Tusso Kerstin Morcinek Catherine Vogler Peter J. Schupp Ciemon F. Caballes Sergio Vargas Gert Wörheide

Population outbreaks of the corallivorous crown-of-thorns seastar (COTS), Acanthaster 'planci' L., are among the most important biological disturbances of tropical coral reefs. Over the past 50 years, several devastating outbreaks have been documented around Guam, an island in the western Pacific Ocean. Previous analyses have shown that in the Pacific Ocean, COTS larval dispersal may be geograp...

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