نتایج جستجو برای: habitat characteristics

تعداد نتایج: 709822  

2004
Craig Syms Geoffrey P. Jones

Coral reef lagoons and back reef areas are composed more of sand than hard reef habitat. They support a diverse mix of fishes, including species restricted to sandy habitats and those dependent on both hard and soft substrata. However the resident assemblages associated with sand and the factors affecting their distribution and abundance are poorly understood. Here we examine spatial co-variati...

2015
Claudia Melis Ivar Herfindal Fredrik Dahl Per-Arne Åhlén

Gathering information on how invasive species utilize the habitat is important, in order to better aim actions to reduce their negative impact. We studied habitat use and selection of 55 GPS-marked raccoon dogs (30 males, 25 females) at their invasion front in Northern Sweden, with particular focus on differences between males and females, between movement states, and between seasons and times ...

Journal: :Dong wu xue yan jiu = Zoological research 2016
Xian Li Yu-Ru Li Ling Chu Ren Zhu Li-Zhu Wang Yun-Zhi Yan

Low-head dam impoundments modify local habitat and alter fish assemblages; however, to our knowledge, the pattern of how fish assemblages in the impoundments relate to local habitat, tributary position, and dam characteristics is still unclear. We used data collected in 62 impoundments created by low-head dams in headwater streams of the Qingyi River, China, to examine relationships between fis...

ژورنال: مرتع 2022
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Background and objectives: Climate change has been a serious issue in the last two decades and many studies have focused on its various aspects. Therefore, it is necessary to determine the future habitat of rangeland species present and future years, under climate warning models. In this regard, it should be investigated whether the increase in temperature will have a positive effect on the pre...

2016
Vanessa Hull Jindong Zhang Jinyan Huang Shiqiang Zhou Andrés Viña Ashton Shortridge Rengui Li Dian Liu Weihua Xu Zhiyun Ouyang Hemin Zhang Jianguo Liu

Animals make choices about where to spend their time in complex and dynamic landscapes, choices that reveal information about their biology that in turn can be used to guide their conservation. Using GPS collars, we conducted a novel individual-based analysis of habitat use and selection by the elusive and endangered giant pandas (Ailuropoda melanoleuca). We constructed spatial autoregressive r...

Journal: :محیط زیست طبیعی 0
سعید محمدی دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، گروه علوم محیط زیست، تهران، ایران محمد کابلی استادیار دانشکده منابع طبیعی، دانشگاه تهران، ایران محمود کرمی استاد دانشکده منابع طبیعی، دانشگاه تهران، ایران افشین علیزاده شعبانی استادیار دانشکده منابع طبیعی، دانشگاه تهران، ایران میترا شریعتی نجف آبادی کارشناس ارشد محیط زیست، دانشکده منابع طبیعی، دانشگاه تهران، ایران

iranian jerboa classified as data deficient species according to the iucn red list. little information has been published about ecological and biological characteristics of allactaga firouzi and other members of genus allactaga. in the present study, we aimed to identify some ecological characteristics, such as: hibernation, feeding habits, breeding, coexistence with other rodents and threateni...

2017
Shane R. Siers Julie A. Savidge Robert N. Reed

Localized ecological conditions have the potential to induce variation in population characteristics such as size distributions and body conditions. The ability to generalize the influence of ecological characteristics on such population traits may be particularly meaningful when those traits influence prospects for successful management interventions. To characterize variability in invasive Br...

2016
Jennifer Amy Vogel Stephen J. Dinsmore Philip M. Dixon Brian J. Wilsey

Loss of habitat is one of the primary factors affecting population declines of grassland birds, and recovery efforts have focused on increasing the amount of grassland habitat in the landscape. Assessing the value of habitat restorations for grassland birds is an essential component of grassland bird conservation. We compared grassland bird habitat use, reproductive success, nestling growth rat...

Journal: :Environmental entomology 2007
A K Fiedler D A Landis

Habitat management is a type of conservation biological control that focuses on increasing natural enemy populations by providing them with plant resources such as pollen and nectar. Insects are known to respond to a variety of plant characteristics in their search for plant-provided resources. A better understanding of the specific characteristics used by natural enemy insects in selecting the...

2017
Nerea Lezama-Ochoa Hilario Murua Martin Hall Marlon Román Jon Ruiz Nick Vogel Ainhoa Caballero Igor Sancristobal

Citation: Lezama-Ochoa N, Murua H, Hall M, Román M, Ruiz J, Vogel N, Caballero A and Sancristobal I (2017) Biodiversity and Habitat Characteristics of the Bycatch Assemblages in Fish Aggregating Devices (FADs) and School Sets in the Eastern Pacific Ocean. Front. Mar. Sci. 4:265. doi: 10.3389/fmars.2017.00265 Biodiversity and Habitat Characteristics of the Bycatch Assemblages in Fish Aggregating...

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