Detecting population declines over large areas with presence‐absence, time‐to‐encounter, and count survey methods

JF Pollock - Conservation Biology, 2006 - Wiley Online Library
Ecologists often discount presence‐absence surveys as a poor way to gain insight into
population dynamics, in part because these surveys are not amenable to many standard …

Modeling false positive detections in species occurrence data under different study designs

T Chambert, DAW Miller, JD Nichols - Ecology, 2015 - Wiley Online Library
The occurrence of false positive detections in presence–absence data, even when they
occur infrequently, can lead to severe bias when estimating species occupancy patterns …

Abundance estimation of unmarked animals based on camera‐trap data

NA Gilbert, JDJ Clare, JL Stenglein… - Conservation …, 2021 - Wiley Online Library
The rapid improvement of camera traps in recent decades has revolutionized biodiversity
monitoring. Despite clear applications in conservation science, camera traps have seldom …

Estimating site occupancy, colonization, and local extinction when a species is detected imperfectly

DI MacKenzie, JD Nichols, JE Hines, MG Knutson… - Ecology, 2003 - Wiley Online Library
Few species are likely to be so evident that they will always be detected when present.
Failing to allow for the possibility that a target species was present, but undetected, at a site …

Opportunistic citizen science data of animal species produce reliable estimates of distribution trends if analysed with occupancy models

AJ Van Strien, CAM Van Swaay… - Journal of Applied …, 2013 - Wiley Online Library
Many publications documenting large‐scale trends in the distribution of species make use of
opportunistic citizen data, that is, observations of species collected without standardized …

Presence-only data and the EM algorithm

G Ward, T Hastie, S Barry, J Elith, JR Leathwick - Biometrics, 2009 - academic.oup.com
In ecological modeling of the habitat of a species, it can be prohibitively expensive to
determine species absence. Presence-only data consist of a sample of locations with …

Estimating and dealing with detectability in occupancy surveys for forest owls and arboreal marsupials

BA Wintle, RP Kavanagh… - The Journal of …, 2005 - Wiley Online Library
Surveys that record the presence or absence of fauna are used widely in wildlife
management and research. A false absence occurs when an observer fails to record a …

Occupancy estimation and modeling with multiple states and state uncertainty

JD Nichols, JE Hines, DI Mackenzie, ME Seamans… - Ecology, 2007 - Wiley Online Library
The distribution of a species over space is of central interest in ecology, but species
occurrence does not provide all of the information needed to characterize either the well …

Spatially explicit models for inference about density in unmarked or partially marked populatioins

RB Chandler, JA Royle - The Annals of Applied Statistics, 2013 - JSTOR
Recently developed spatial capture—recapture (SCR) models represent a major advance
over traditional capture—recapture (CR) models because they yield explicit estimates of …

Using species distribution and occupancy modeling to guide survey efforts and assess species status

WE Peterman, JA Crawford, AR Kuhns - Journal for nature conservation, 2013 - Elsevier
Habitat loss and fragmentation continue to be major issues affecting the persistence and
conservation of species, but identification of critical habitat remains a challenge. Species …