نتایج جستجو برای: conservation units

تعداد نتایج: 271029  

Journal: :Ecological solutions and evidence 2021

1. Genetic diversity is important for species persistence and Gene Conservation Units (GCUs) have been implemented forest trees to protect genetic evolutionary processes in situ. The Convention on Biological Diversity stipulates the protection of as an Aichi target, so we explore potential GCUs be more widely. 2. Our global systematic review showed that are currently primarily plant economic im...

Journal: :Trends in ecology & evolution 2000
Crandall Bininda-Emonds Mace Wayne

Conservation biologists assign population distinctiveness by classifying populations as evolutionarily significant units (ESUs). Historically, this classification has included ecological and genetic data. However, recent ESU concepts, coupled with increasing availability of data on neutral genetic variation, have led to criteria based exclusively on molecular phylogenies. We argue that the earl...

2013
Li Xiaowen Zhuge Haijin Mengdi Li

The Central Yangtze Ecoregion contains a large area of internationally important freshwater wetlands and supports a huge number of endangered waterbirds; however, these unique wetlands and the biodiversity they support are under the constant threats of human development pressures, and the prevailing conservation strategies generated based on the local scale cannot adequately be used as guidelin...

2015
L. Noyez

The use of allogeneic red blood cells (RBC) is commonplace in cardiac surgery, with reported transfusion rates ranging from 5 to 90 %. [1–4] Despite advantages, RBC transfusion is associated with well-described adverse outcomes. [1–4] Transfusion of RBCs is not only associated with an increased perioperative mortality and morbidity, however; it also results in a longer ICU stay, total hospital ...

Journal: :The Journal of bone and joint surgery. British volume 2006
R R Verma J B Williamson H Dashti D Patel N J Oxborrow

We studied 70 consecutive patients with adolescent idiopathic scoliosis who underwent corrective surgery. They were divided into two groups. In the study group of 38 patients one or more modern blood-conservation measures was used peri-operatively. The 32 patients in the control group did not have these measures. Both groups were similar in regard to age, body-weight, the number of levels fused...

Journal: :Molecular ecology 2004
H Bradley Shaffer Gregory B Pauly Jeffrey C Oliver Peter C Trenham

A primary goal of conservation genetics is the discovery, delimitation and protection of phylogenetic lineages within sensitive or endangered taxa. Given the importance of lineage protection, a combination of phylogeography, historical geology and molecular clock analyses can provide an important historical context for overall species conservation. We present the results of a range-wide survey ...

Journal: :The Journal of trauma 2000
R Cartotto M A Musgrave M Beveridge J Fish M Gomez

BACKGROUND Significant blood loss continues to plague early tangential excision of the burn wound. Although various techniques to reduce intraoperative blood loss have been described, there is an absence of uniformity and consistency in their application. Furthermore, it is unclear whether these techniques compromise intraoperative tissue assessment and wound outcome. The purpose of this study ...

2012
Hans Van Dyck

There is a growing recognition for the significance of evolutionary thinking in ecology and conservation biology. However, ecology and conservation studies often work with species-specific, fixed traits that ignore intraspecific variation. The way the habitat of a species is considered is an example of typological thinking biased by human perception. Structural habitat units (e.g., land cover t...

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