1) La descarga del recurso depende de la página de origen
2) Para poder descargar el recurso, es necesario ser usuario registrado en Universia

Opción 1: Descargar recurso

Detalles del recurso


Estimation of population sizes and species ranges are central to population and conservation biology. It is widely appreciated that imperfect detection of mobile animals must be accounted for when estimating population size from presence-absence data. Sessile organisms also are imperfectly detected, but correction for detection probability in estimating their population sizes is rare. We illustrate challenges of detection probability and population estimation of sessile organisms using censuses of red wood ant (Formica rufa-group) nests as a case study. These ants, widespread in the northern hemisphere, can make large (up to 2-m tall), highly visible nests. Using data from a mapping campaign by eight observers with varying experience of sixteen 3600-m2 plots in the Black Forest region of southwest Germany, we compared three different statistical approaches (a nest-level data-augmentation patch-occupancy model with event-specific covariates; a plot-level Bayesian and maximum likelihood model; non-parametric Chao-type estimators) for quantifying detection probability of sessile organisms. Detection probabilities by individual observers of red wood ant nests ranged from 0.31 – 0.64 for small nests, depending on observer experience and nest size (detection rates were approximately 0.17 higher for large nests), but not on habitat characteristics (forest type, local vegetation). Robust estimation of population density of sessile organisms – even highly apparent ones such as red wood ant nests – thus requires estimation of detection probability, just as it does when estimating population density of rare or cryptic species. Our models additionally provide approaches to calculate the number of observers needed for a required level of accuracy. Estimating detection probability is vital not only when censuses are conducted by experts, but also when citizenscientists are engaged in mapping and monitoring of both common and rare species.

Pertenece a

Digital Access to Scholarship at Harvard  


Berberich, Gabriele M. -  Dormann, Carsten F. -  Klimetzek, Dietrich -  Berberich, Martin B. -  Sanders, Nathan J. -  Ellison, Aaron M. - 

Id.: 69521611

Idioma: inglés (Estados Unidos)  - 

Versión: 1.0

Estado: Final

Palabras claveants - 

Tipo de recurso: Journal Article  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

: open

Requerimientos técnicos:  Browser: Any - 

Relación: [References] 10.1002/ecs2.1546
[References] Ecosphere

Fecha de contribución: 29-ago-2017


* Quick submit: 2016-07-10T10:16:57-0400
* Berberich, Gabriele M., Carsten F. Dormann, Dietrich Klimetzek, Martin B. Berberich, Nathan J. Sanders, and Aaron M. Ellison. 2016. “Detection Probabilities for Sessile Organisms.” Ecosphere 7 (11) (November): e01546. Portico. doi:10.1002/ecs2.1546.
* 2150-8925

Otros recursos del mismo autor(es)

  1. Elevation alters ecosystem properties across temperate treelines globally Temperature is a primary driver of the distribution of biodiversity as well as of ecosystem boundari...
  2. Data from 14 labortories testing the impact of introduced variability on the reproducibility of a microcosm ecological experiment Although microcosm experiments are a frequent tool used to address fundamental ecological questions,...
  3. The PREDICTS database: a global database of how local terrestrial biodiversity responds to human impacts
  4. Heat tolerance predicts the importance of species interaction effects as the climate changes Few studies have quantified the relative importance of direct effects of climate change on communiti...
  5. Assessing the impacts of the decline of Tsuga canadensisstands on two amphibian species in a New England forest Disturbances such as outbreaks of herbivorous insects and pathogens can devastate unique habitats an...

Otros recursos de la mismacolección

  1. Teeth and Human Life-History Evolution Modern humans differ from wild great apes in gestation length, weaning age, interbirth interval, sex...
  2. Limits to Resolution of CW STED Microscopy We report a systematic theoretical and experimental study of the limits to spatial resolution for st...
  3. Synthesis of the C4-Epi-Lomaiviticin B Core Reveals Subtle Stereoelectronic Effects An efficient synthesis of the C4-epi-lomaiviticin B core is reported. The synthesis features a diast...
  4. Optimization of large amorphous silicon and silica structures for molecular dynamics simulations of energetic impacts A practical method to create optimized amorphous silicon and silica structures for molecular dynamic...
  5. Effect of absorption enthalpy on temperature-swing CO2 separation process performance We model a CO2 absorption process to elucidate the rationale for the search for a solvent with an en...

Aviso de cookies: Usamos cookies propias y de terceros para mejorar nuestros servicios, para análisis estadístico y para mostrarle publicidad. Si continua navegando consideramos que acepta su uso en los términos establecidos en la Política de cookies.