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Diversity gradients in the fossil re...

Darroch, Simon Alastair Francis.

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Diversity gradients in the fossil record - developing predictive models for biodiversity loss.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Diversity gradients in the fossil record - developing predictive models for biodiversity loss./
作者:	Darroch, Simon Alastair Francis.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2015,
面頁冊數:	211 p.
附註:	Source: Dissertation Abstracts International, Volume: 76-11(E), Section: B.
Contained By:	Dissertation Abstracts International76-11B(E).
標題:	Paleontology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3663459
ISBN:	9781321929706

Diversity gradients in the fossil record - developing predictive models for biodiversity loss.
Darroch, Simon Alastair Francis.

Diversity gradients in the fossil record - developing predictive models for biodiversity loss. - Ann Arbor : ProQuest Dissertations & Theses, 2015 - 211 p.

Source: Dissertation Abstracts International, Volume: 76-11(E), Section: B.

Thesis (Ph.D.)--Yale University, 2015.

This item is not available from ProQuest Dissertations & Theses.

Spatial patterns in biodiversity (diversity gradients) are among the most intensely studied aspects of ecosystems. These gradients are profoundly influenced by large-scale ecological, historical, and evolutionary processes, and as such historical factors are likely just as important as the biological and physical aspects of the current environment in determining the distributions of species. Paleontology is increasingly showing that fossil material can provide a high-resolution spatial record that can be used to study the effects of these. processes, as well as identify the specific temporal and spatial scales on which they operate. In a modern context, diversity gradients are of profound importance to conservation biologists aiming to preserve biodiversity in the face of anthropogenic impacts and on-going global change; the fossil record is therefore a valuable (and underused) source of historical data that can be used to predict the longer-term biogeographic consequences of the '6 th mass extinction'. In this thesis I present four paleontological case studies that highlight long-term evolution in both global and local-scale diversity gradients, and test the roles of specific processes in creating and altering these gradients. I demonstrate: 1) diversity gradients can be created, modified, and destroyed by processes operating on geological timescales, including key evolutionary innovations, mass extinctions, and biotic invasion; 2) the fossil record can be heavily influenced by sampling effort, and so requires a variety of novel statistical techniques to interpret correctly; 3) the biogeographic effects of mass extinctions are scale-dependent (both spatial- and temporal); and, 4) determining the biogeographic effects of past mass extinctions and nested spatial and temporal scales can offer a roadmap for interpreting changing species distributions in the current biodiversity crisis.

ISBN: 9781321929706Subjects--Topical Terms:

518862
Paleontology.

Diversity gradients in the fossil record - developing predictive models for biodiversity loss.
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