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Bee Pollination in Agricultural Ecosystems

Rosalind James and Theresa L. Pitts-Singer (eds)

Published in print:
2008
Published Online:
September 2008
ISBN:
9780195316957
eISBN:
9780199871575
Item type:
book
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780195316957.001.0001
Subject:
Biology, Animal Biology, Plant Sciences and Forestry

Bees play a vital role as pollinators for many agricultural crops. This book discusses the interplay between bees, agriculture, and the environment. Although honey bees are well recognized as ... More


GLOBAL PATTERNS

Ernest H. Williams

in The Nature Handbook: A Guide to Observing the Great Outdoors

Published in print:
2005
Published Online:
September 2007
ISBN:
9780195179293
eISBN:
9780199790470
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780195179293.003.0014
Subject:
Biology, Natural History and Field Guides

This final chapter presents key observations over broad spatial and temporal scales. The first three are readily observable, at least in the right geographic areas, but the last two — species and ... More


Human Resilience in the Face of Biodiversity Tipping Points at Local and Regional Scales1

Patricia Howard

in Addressing Tipping Points for a Precarious Future

Published in print:
2013
Published Online:
January 2014
ISBN:
9780197265536
eISBN:
9780191760327
Item type:
chapter
Publisher:
British Academy
DOI:
10.5871/bacad/9780197265536.003.0006
Subject:
Political Science, Environmental Politics

Biodiversity and cultural diversity are intertwined. The threats to biodiversity are already observable and are accelerating. The spread of non-native species is an under-examined threat to ... More


Species Selection, Clade Selection, and Macroevolution

Samir Okasha

in Evolution and the Levels of Selection

Published in print:
2006
Published Online:
January 2007
ISBN:
9780199267972
eISBN:
9780191708275
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199267972.003.0007
Subject:
Philosophy, Philosophy of Science

This chapter examines selection at the level of species and clades. The history of the species selection debate, including its conceptual link to the idea that species are individuals, is outlined. ... More


Concepts of Niches

A. Townsend Peterson, Jorge Soberón, Richard G. Pearson, Robert P. Anderson, Enrique Martínez-Meyer, Miguel Nakamura, and Miguel Bastos Araújo

in Ecological Niches and Geographic Distributions (MPB-49)

Published in print:
2011
Published Online:
October 2017
ISBN:
9780691136868
eISBN:
9781400840670
Item type:
chapter
Publisher:
Princeton University Press
DOI:
10.23943/princeton/9780691136868.003.0002
Subject:
Biology, Ecology

This chapter proposes a formal and operational definition of a particular niche concept, introduces approaches for characterizing and measuring it, and uses it as a conceptual and terminological ... More


Ecological Niches and Geographic Distributions (MPB-49)

A. Townsend Peterson, Jorge Soberón, Richard G. Pearson, Robert P. Anderson, Enrique Martínez-Meyer, Miguel Nakamura, and Miguel B. Araújo

Published in print:
2011
Published Online:
October 2017
ISBN:
9780691136868
eISBN:
9781400840670
Item type:
book
Publisher:
Princeton University Press
DOI:
10.23943/princeton/9780691136868.001.0001
Subject:
Biology, Ecology

This book provides a first synthetic view of an emerging area of ecology and biogeography, linking individual- and population-level processes to geographic distributions and biodiversity patterns. ... More


The Specification of Human Actions in St Thomas Aquinas

Joseph Pilsner

Published in print:
2006
Published Online:
May 2006
ISBN:
9780199286058
eISBN:
9780191603808
Item type:
book
Publisher:
Oxford University Press
DOI:
10.1093/0199286051.001.0001
Subject:
Religion, Theology

Thomas Aquinas believed that human actions have kinds or species. He divided human actions into good, evil, or indifferent, and subdivided them into more particular kinds such as almsgiving, murder, ... More


Darwinian Agriculture: How Understanding Evolution Can Improve Agriculture

R. Ford Denison

Published in print:
2012
Published Online:
October 2017
ISBN:
9780691139500
eISBN:
9781400842810
Item type:
book
Publisher:
Princeton University Press
DOI:
10.23943/princeton/9780691139500.001.0001
Subject:
Biology, Evolutionary Biology / Genetics

As human populations grow and resources are depleted, agriculture will need to use land, water, and other resources more efficiently and without sacrificing long-term sustainability. This book ... More


Reproduction by the Chaste: Parthenogenesis

John C. Avise

in Clonality: The Genetics, Ecology, and Evolution of Sexual Abstinence in Vertebrate Animals

Published in print:
2008
Published Online:
January 2009
ISBN:
9780195369670
eISBN:
9780199871063
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780195369670.003.0003
Subject:
Biology, Evolutionary Biology / Genetics

Virgins can indeed give birth, and not only in Greek mythology. In biology, the word partheno appended by genesis (meaning origin) describes the clonal process by which a female procreates without ... More


Population dynamics: modelling demographic Allee effects

Franck Courchamp, Luděk Berec, and Joanna Gascoigne

in Allee Effects in Ecology and Conservation

Published in print:
2008
Published Online:
May 2008
ISBN:
9780198570301
eISBN:
9780191717642
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198570301.003.0003
Subject:
Biology, Biodiversity / Conservation Biology

Much of what is known about Allee effects comes from mathematical models. This chapter deals with models of demographic Allee effects. It shows what types of model are available, what their ... More


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