نتایج جستجو برای: biodiversity

تعداد نتایج: 36786  

Journal: :Evolution; international journal of organic evolution 2010
Andrew P Hendry Lúcia G Lohmann Elena Conti Joel Cracraft Keith A Crandall Daniel P Faith Christoph Häuser Carlos A Joly Kazuhiro Kogure Anne Larigauderie Susana Magallón Craig Moritz Simon Tillier Rafael Zardoya Anne-Hélène Prieur-Richard Bruno A Walther Tetsukazu Yahara Michael J Donoghue

Evolutionary biologists have long endeavored to document how many species exist on Earth, to understand the processes by which biodiversity waxes and wanes, to document and interpret spatial patterns of biodiversity, and to infer evolutionary relationships. Despite the great potential of this knowledge to improve biodiversity science, conservation, and policy, evolutionary biologists have gener...

2014
Gabriele Dröge Katharine Barker Jonas J. Astrin Paul Bartels Carol Butler David Cantrill Jonathan Coddington Félix Forest Birgit Gemeinholzer Donald Hobern Jacqueline Mackenzie-Dodds Éamonn Ó Tuama Gitte Petersen Oris Sanjur David Schindel Ole Seberg

The Global Genome Biodiversity Network (GGBN) was formed in 2011 with the principal aim of making high-quality well-documented and vouchered collections that store DNA or tissue samples of biodiversity, discoverable for research through a networked community of biodiversity repositories. This is achieved through the GGBN Data Portal (http://data.ggbn.org), which links globally distributed datab...

Journal: :CBE life sciences education 2009
Dennis Liu

The conundrum of biodiversity is that there’s so much of it, more species than a person can count, more interactions than a supercomputer could calculate. At the same time, this unknown quantity is getting smaller at an alarming rate. Biodiversity as a life sciences subject touches evolution, ecology, conservation biology, and environmental studies. The educational challenge is to infuse biodiv...

Journal: :Science 2000
O E Sala F S Chapin J J Armesto E Berlow J Bloomfield R Dirzo E Huber-Sanwald L F Huenneke R B Jackson A Kinzig R Leemans D M Lodge H A Mooney M Oesterheld N L Poff M T Sykes B H Walker M Walker D H Wall

Scenarios of changes in biodiversity for the year 2100 can now be developed based on scenarios of changes in atmospheric carbon dioxide, climate, vegetation, and land use and the known sensitivity of biodiversity to these changes. This study identified a ranking of the importance of drivers of change, a ranking of the biomes with respect to expected changes, and the major sources of uncertainti...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2014
Cameron Wagg S Franz Bender Franco Widmer Marcel G A van der Heijden

Biodiversity loss has become a global concern as evidence accumulates that it will negatively affect ecosystem services on which society depends. So far, most studies have focused on the ecological consequences of above-ground biodiversity loss; yet a large part of Earth's biodiversity is literally hidden below ground. Whether reductions of biodiversity in soil communities below ground have con...

Journal: :Conservation biology : the journal of the Society for Conservation Biology 2010
K J Hennenberg C Dragisic S Haye J Hewson B Semroc C Savy K Wiegmann H Fehrenbach U R Fritsche

The sustainable production of bioenergy is vital to avoiding negative impacts on environmental goods such as climate, soil, water, and especially biodiversity. We propose three key issues that should be addressed in any biodiversity risk-mitigation strategy: conservation of areas of significant biodiversity value; mitigation of negative effects related to indirect land-use change; and promotion...

2015
Kristy Deiner Jean-Claude Walser Elvira Mächler Florian Altermatt

Environmental DNA (eDNA) is used to detect biodiversity by the capture, extraction, and identification of DNA shed to the environment. However, eDNA capture and extraction protocols vary widely across studies. This use of different protocols potentially biases detection results and could significantly hinder a reliable use of eDNA to detect biodiversity. We tested whether choice of eDNA capture...

2010
CIRO GARDI SIMONE ROSSI STEFAN SOMMER

Executive Summary In many countries farmland represent the most relevant type of land use. The conservation and the enhancement of biodiversity within these areas is primary objective for the achievement of sustainable management of agro‐ecosystems and the level of biodiversity can be used as agri‐ environmental indicator. The measure of biodiversity over larger territories however, can be very...

Journal: :The American naturalist 2011
Evan P Economo

A central goal of conservation science is to identify the most important habitat patches for maintaining biodiversity on a landscape. Spatial biodiversity patterns are often used for such assessments, and patches that harbor unique diversity are generally prioritized over those with high community similarity to other areas. This places an emphasis on biodiversity representation, but removing a ...

2012
Daniel P Faith Chris Margules Gary Luck

New global initiatives require clarity about similarities and differences between biodiversity and ecosystem services. One argument is that ecosystem services capture utilitarian values, while biodiversity captures intrinsic values. However, the concept of biodiversity equally emerges from anthropogenic use values. Measures of biodiversity indicate broad option values, and so provide different ...

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