نتایج جستجو برای: exotic mouflon

تعداد نتایج: 15460  

2002
Scott J. Meiners Steward T. A. Pickett Mary L. Cadenasso

While exotic plant species often come to dominate disturbed communities, long-term patterns of invasion are poorly known. Here we present data from 40 yr of continuous vegetation sampling, documenting the temporal distribution of exotic plant species in old field succession. The relative cover of exotic species decreased with time since abandonment, with significant declines occurring 20 yr pos...

2016
Rebecca C Wilcox Robert J Fletcher

Identifying impacts of exotic species on native populations is central to ecology and conservation. Although the effects of exotic predators on native prey have received much attention, the role of exotic prey on native predators is poorly understood. Determining if native predators actively prefer invasive prey over native prey has implications for interpreting invasion impacts, identifying th...

2011
Lara Souza Windy A. Bunn Daniel Simberloff Robert M. Lawton Nathan J. Sanders

1. Biological invasions threaten biodiversity, and understanding the factors that influence a community’s susceptibility to invasion informs both management of invasive species and conservation efforts towards promoting biodiversity. 2. In this study, we examined the native–exotic richness relationships (NERR) at two spatial scales and asked what variables mediate the relationship between nativ...

2014
Asif Iqbal

Foot rot is a highly contagious and economically important disease of the feet of ruminants especially sheep and goats and is characterized by the separation of keratinous hoof from the underlying epidermal tissue resulting in severe lameness, loss of body condition and reduced wool production. Although foot rot infection has been reported in cattle, horses, pigs, deer and mouflon, the infectio...

2015
Eric W Seabloom Elizabeth T Borer Yvonne M Buckley Elsa E Cleland Kendi F Davies Jennifer Firn W Stanley Harpole Yann Hautier Eric M Lind Andrew S MacDougall John L Orrock Suzanne M Prober Peter B Adler T Michael Anderson Jonathan D Bakker Lori A Biederman Dana M Blumenthal Cynthia S Brown Lars A Brudvig Marc Cadotte Chengjin Chu Kathryn L Cottingham Michael J Crawley Ellen I Damschen Carla M Dantonio Nicole M DeCrappeo Guozhen Du Philip A Fay Paul Frater Daniel S Gruner Nicole Hagenah Andy Hector Helmut Hillebrand Kirsten S Hofmockel Hope C Humphries Virginia L Jin Adam Kay Kevin P Kirkman Julia A Klein Johannes M H Knops Kimberly J La Pierre Laura Ladwig John G Lambrinos Qi Li Wei Li Robin Marushia Rebecca L McCulley Brett A Melbourne Charles E Mitchell Joslin L Moore John Morgan Brent Mortensen Lydia R O'Halloran David A Pyke Anita C Risch Mahesh Sankaran Martin Schuetz Anna Simonsen Melinda D Smith Carly J Stevens Lauren Sullivan Elizabeth Wolkovich Peter D Wragg Justin Wright Louie Yang

Exotic species dominate many communities; however the functional significance of species' biogeographic origin remains highly contentious. This debate is fuelled in part by the lack of globally replicated, systematic data assessing the relationship between species provenance, function and response to perturbations. We examined the abundance of native and exotic plant species at 64 grasslands in...

2017
W. Gaya Shivega Laura Aldrich-Wolfe

While the soil environment is generally acknowledged as playing a role in plant competition, the relative importance of soil resources and soil microbes in determining outcomes of competition between native and exotic plants has rarely been tested. Resilience of plant communities to invasion by exotic species may depend on the extent to which native and exotic plant performance are mediated by ...

2014
Magdalena Larska Julia Kęsik-Maliszewska Aleksandra Kuta

The aim of the study was to evaluate the prevalence of Schmallenberg virus (SBV) specific antibodies in ruminants from 13 Polish provinces, sampled between January 2010 and August 2013. A total number of 1813 serum samples from cattle, sheep, goats, mouflon, wild and farmed cervids, and European bison were tested by ELISA for viral nucleoprotein antibodies. First SBV seropositive animals were i...

Journal: :Ecology letters 2009
Brian J Wilsey Terri B Teaschner Pedram P Daneshgar Forest I Isbell H Wayne Polley

In many systems, native communities are being replaced by novel exotic-dominated ones. We experimentally compared species diversity decline between nine-species grassland communities under field conditions to test whether diversity maintenance mechanisms differed between communities containing all exotic or all native species using a pool of 40 species. Aboveground biomass was greater in exotic...

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