NDLI: Time to extinction in deteriorating environments

Content Provider	Springer Nature Link
Author	Zarada, Katherine Drake, John M.
Copyright Year	2016
Abstract	Habitat degradation and destruction are the predominant drivers of population extinction, but there is little theory to guide the analysis of population viability in deteriorating environments. To address this gap, we investigated extinction times in time-varying, demographically stochastic versions of the logistic model for population dynamics. A property of these models is the “extinction delay,” a quantitative measure of the time lag in extinction created by species-specific extinction debt. For completeness, three models were constructed to represent the different demographic routes by which deterioration may affect population dynamics. Numerical analysis for two notional life histories indicated that the demographic response to environmental deterioration had a large effect on extinction delay, but a third analysis showed that the trajectory of the decline in carrying capacity ultimately characterized its magnitude. A concave decline in carrying capacity produced a large extinction delay while a small delay occurred with a convex decline. Furthermore, our results explore the non-monotonicity of extinction debt with respect to the speed of deterioration. A peak is present at low levels of deterioration, and the height of the peak and the asymptote of delay are affected by both life history parameterizations and the rate of change of the carrying capacity. The results suggest that population viability analyses must consider not only environmental deterioration, but also the effects of deterioration on the trajectory of the decline in carrying capacity.
Starting Page	65
Ending Page	71
Page Count	7
File Format	PDF
ISSN	18741738
Journal	Theoretical Ecology
Volume Number	10
Issue Number	1
e-ISSN	18741746
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-08-27
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Environmental deterioration Time to extinction Extinction debt Bifurcation delay Theoretical Ecology/Statistics Plant Sciences Zoology
Content Type	Text
Resource Type	Article
Subject	Ecology Ecological Modeling

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Data from: Time to extinction in deteriorating environments (Dataset)

Complex dynamics of survival and extinction in simple population models with harvesting

Synchronization in ecological systems by weak dispersal coupling with time delay

An updated perspective on the role of environmental autocorrelation in animal populations

Threshold extinction in food webs

Erratum to: Sensitivity analysis of continuous-time models for ecological and evolutionary theories

Statistical indicators and state–space population models predict extinction in a population of bobwhite quail

Generalized modeling of ecological population dynamics

Spectral color, synchrony, and extinction risk

Time to extinction in deteriorating environments

Similar Documents

Data from: Time to extinction in deteriorating environments (Dataset)

Complex dynamics of survival and extinction in simple population models with harvesting

Synchronization in ecological systems by weak dispersal coupling with time delay

An updated perspective on the role of environmental autocorrelation in animal populations

Threshold extinction in food webs

Erratum to: Sensitivity analysis of continuous-time models for ecological and evolutionary theories

Statistical indicators and state–space population models predict extinction in a population of bobwhite quail

Generalized modeling of ecological population dynamics

Spectral color, synchrony, and extinction risk

Time to extinction in deteriorating environments