Sex difference and Allee effects shape the dynamics of sex‐structured invasions
نویسندگان
چکیده
منابع مشابه
Exploiting Allee effects for managing biological invasions.
Biological invasions are a global and increasing threat to the function and diversity of ecosystems. Allee effects (positive density dependence) have been shown to play an important role in the establishment and spread of non-native species. Although Allee effects can be considered a bane in conservation efforts, they can be a benefit in attempts to manage non-native species. Many biological in...
متن کاملPredicting Invasions: Propagule Pressure and the Gravity of Allee Effects
Invasions by nonindigenous species impose large environmental and economic costs. In order to prevent invasions and target monitoring efforts most effectively, we need to forecast locations at the greatest risk of new invasions. To accomplish this, we need to estimate propagule pressure (inoculum size) and consider population processes, including possible Allee effects. Here, we develop a metho...
متن کاملthe effects of planning on accuracy and complexity of iranian efl students’ written narrative task performance
this study compared the different effects of form-focused guided planning vs. meaning-focused guided planning on iranian pre-intermediate students’ task performance. the study lasted for three weeks and concentrated on eight english structures. forty five pre-intermediate iranian students were randomly assigned to three groups of guided planning focus-on-form group (gpfg), guided planning focus...
15 صفحه اولthe effects of time planning and task complexity on accuracy of narrative task performance
هدف اصلی این تحقیق بررسی تاثیر برنامه ریزی زمانی، هم چنین افزایش میزان پیچیدگی تکالیف در نظر گرفته شده بصورت همزمان، بر دقت و صحت و پیچیدگی عملکرد نوشتاری زبان آموزان می باشد. بدین منظور، 50 نفر از دانش آموزان دختر در رده ی سنی 16 الی 18 سال به عنوان شرکت کنندگان در این زمینه ی تحقیق در نظر گرفته شدند و به دو گروه آزمایشی و کنترل بصورت اتفاقی تقسیم شدند. اعضای گروه آزمایشی هر دو تکلیف ساده و پی...
Allee effects in metapopulation dynamics.
Department of Ecology and Evolutionary Biology, University of where p is the fraction of habitats occupied by the species California, Irvine, California 92697-2525 in question, m is the colonization rate of empty patches, and e is the extinction rate of occupied patches. The Submitted November 4, 1997; Accepted February 17, 1998 nontrivial equilibrium p* 5 1 2 (e/m) is globally stable as long a...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Animal Ecology
سال: 2017
ISSN: 0021-8790,1365-2656
DOI: 10.1111/1365-2656.12658