نتایج جستجو برای: alien species

تعداد نتایج: 551508  

2016
Feng-Lan Li Qi-Jie Zan Zheng-Yu Hu Paul-K. S. Shin Siu-Gin Cheung Yuk-Shan Wong Nora Fung-Yee Tam An-Ping Lei

A higher photosynthesis and lower energetic cost are recognized as important characteristics for invasive species, but whether these traits are also important for the ability of alien mangrove species to become invasive has seldom been reported. A microcosm study was conducted to compare the photosynthetic characteristics, energetic cost indices and other growth traits between two alien species...

2008
Paul Scowcroft

Questions: Is the introduced timber species Fraxinus uhdei invasive in Hawai‘i? Has logging disturbance facilitated the spread of Fraxinus and other alien species? Location: Windward Mauna Kea, island of Hawai‘i. Methods: We surveyed 29 plots which were established before selective logging of the native tree Acacia koa in 1971 to determine if Fraxinus spread beyond the borders of an existing pl...

2017
Supen Wang Liqing Fan Conghui Liu Jiaqi Li Xu Gao Wei Zhu Yiming Li

Identifying the origins of alien species has important implications for effectively controlling the spread of alien species. The black-spotted frog Pelophylax nigromaculatus, originally from East Asia, has become an alien species on the Tibetan Plateau (TP). In this study, we collected 300 individuals of P. nigromaculatus from 13 native regions and 2 invasive regions (including Nyingchi and Lha...

The present study aims to predict the potential geographic distribution and future expansion of invasive alien lionfish (Pterois miles) with ecological niche modelling along the Mediterranean Sea. The primary data consisted of occurrence points of P. miles in the Mediterranean and marine climatic data layers were collected from global databases. All the used models run 100% su...

2013
Liqiang Song Lili Jiang Haiming Han Ainong Gao Xinming Yang Lihui Li Weihua Liu

The narrow genetic background restricts wheat yield and quality improvement. The wild relatives of wheat are the huge gene pools for wheat improvement and can broaden its genetic basis. Production of wheat-alien translocation lines can transfer alien genes to wheat. So it is important to develop an efficient method to induce wheat-alien chromosome translocation. Agropyroncristatum (P genome) ca...

Journal: :Japanese Journal of Zoo and Wildlife Medicine 2002

Journal: :international journal of aquatic biology 0
ranjeet kutty department of fishery hydrography, kerala university of fisheries and ocean studies, panangad p.o., 682 586, kerala, india. muhsina chakkayil department of aquaculture and fishery microbiology mes ponnani college, ponnani south p.o., 679 586 malappuram dist., kerala, india. shahul hameed pentam veli pura department of aquaculture and fishery microbiology mes ponnani college, ponnani south p.o., 679 586, malappuram dist., kerala, india.

benthic organisms have been studied in past to assess the health of an aquatic ecosystem. moreover, being sedentary forms they have been used as indicator organisms. in the present study, an attempt has been made to study the distribution and assemblage of major macrobenthic forms occurring in ponnani estuary. a total of 23 genera of benthic invertebrate fauna belonging to 6 groups viz., polych...

2012
Diomar Cristina Mistro Luiz Alberto Dı́az Rodrigues Sergei Petrovskii

Understanding dynamical complexity of alien species invasion is an important and timely issue as it is believed that identification of possible invasion scenarios may result in a more effective invasive species management and control. To address this issue, mathematical modeling is widely recognized as a convenient theoretical tool as it often helps to reveal generic tendencies in a situation w...

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