Filling the Empty Niches
نویسندگان
چکیده
منابع مشابه
Empty Niches after Extinctions Increase Population Sizes of Modern Corals
Large environmental fluctuations often cause mass extinctions, extirpating species and transforming communities [1, 2]. While the effects on community structure are evident in the fossil record, demographic consequences for populations of individual species are harder to evaluate because fossils reveal relative, but not absolute, abundances. However, genomic analyses of living species that have...
متن کاملFilling Empty Seats: How Status and Organizational Hierarchies Affect Exploration versus Exploitation in Team Design
Informal and formal mechanisms affect choices between exploitation and exploration in team design. We argue that the status differentiation of team members and differences in organizational structure limit exploration in the form of introducing newcomers to teams and creating new combinations of team members. Highand low-status team members and oneand three-layer organizational structures were ...
متن کاملThe empty follicle syndrome.
The empty follicle syndrome (EFS) is a rare complication of in vitro fertilization (IVF) treatment, leading to cycle cancellation. Low human chorionic gonadotropin (hCG) bioavailability and ovarian dysfunction have been implicated with this condition. This case report illustrates a typical case of EFS and several strategies suggested to overcome this problem.
متن کاملThe empty azygos fissure.
The azygos fissure is typically visible on chest radiography as a right paramediastinal supernumerary line in projection of the right lung apex. The azygos vein, located at the bottom of the fissure, is visible as a teardrop-shaped opacity. The empty azygos fissure is a rare finding. It is the consequence of the displacement of the azygos vein out of the fissure with a close paramediastinal pos...
متن کامل[The empty sella syndrome].
The empty sella syndrome (ESS) presents a varied clinical and radiographic picture. It may remain asymptomatic or may stimulate an intrasellar growth thereby causing diagnostic and therapeutic problems. An air encephalogram (AEG) is required for diagnosis. The purpose of this paper is to review the clinical and radiological features of the ESS and to discuss the pathogenetic mechanisms involved.
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: AmeriQuests
سال: 2006
ISSN: 1553-4316
DOI: 10.15695/amqst.v3i2.68