Conferencia sobre Biodiversidad y la Trasformación del Paisaje: Claves para la comprensión ecológica del espacio

La Carrera de Geografía y el Programa de Investigaciones e Intervenciones Territoriales (PIIT), de la Universidad Academia de Humanismo Cristiano, está presentando el 5to Ciclo de Conferencias “La Naturaleza del Espacio” en torno a la temática “Biodiversidad y la transformación del paisaje: claves para la comprensión ecológica del espacio”, dictadas por Alicia Arredondo, profesora de biología de la UMCE y Gioconda López Vargas, bióloga ambiental, ambas Magíster en Ciencias Biológicas con mención en Ecología y Biología Evolutiva de la Universidad de Chile.

La conferencia se realizará el día viernes 3 de septiembre a las 14.30 horas en la sala C-414, de la casa central de la universidad, ubicada en Condell 343, Providencia.

Se expondrán los siguientes temas:

Mg. Gioconda López Vargas: “Evaluación de la biodiversidad de plantas en paisajes antropogénicos: el efecto de las plantaciones de pino”

Mg. Alicia Arredondo: “Reproducción y distribución del dedal de oro, una planta invasora, en la precordillera Andina de Chile central.”

Cambios en el paisaje en la precordillera de la Araucanía

Se realizó un estudio de cambios en un paisaje de la Araucanía utilizando métricas de paisaje y clase.

La zona de estudio corresponde a un área de 4000 ha en el valle agrícola de la comuna de Pucón. Se registró una recuperación de la vegetación nativa, menor fragmentación, mayor diversidad y uniformidad, menor superficie agrícola, mayor área residencial y plantaciones forestales durante el periodo 1983-2007. Los resultados obtenidos contrastan con la tendencia a nivel regional, donde la vegetación nativa está disminuyendo.

Robert Petitpas

Investigador asociado Fauna Australis

Congreso de Recursos Naturales Valdivia-Chile

El VIII Congreso Internacional en Gestion de Recursos Naturales se realizará en la ciudad de Valdivia, Chile, entre el 23 y el 26 de noviembre de 2010.
Este Congreso está estructurado en: (a) simposios, (b) talleres, (c) cursos y (d) muestras de instituciones, libros y videos.


1. Estimular la discusión, intercambio de información y experiencias de profesionales e investigadores relacionados con la gestión de recursos naturales en Ibero América.

2. Contribuir al fortalecimiento de las estrategias de Conservación en Ibero América mediante: a) la preservación de la biodiversidad, b) el mantenimiento de los procesos ecológicos esenciales y los procesos vitales, y c) el aprovechamiento de las especies y los ecosistemas con criterios de desarrollo sustentable.

3. Obtener antecedentes y conclusiones que permitan orientar planes y programas de conservación de recursos naturales.

VIII Congreso Internacional Gestión en Recursos Naturales

Patrocinan y auspician
(a julio de 2010)

Unión Internacional para la Conservación de la Naturaleza
Sociedad de Vida Silvestre
Museo Nacional de Historia Natural
Unión de Ornitólogos de Chile
Servicio Nacional de Turismo
Facultad de Recursos Naturales
Laboratorio de Investigación Fauna Australis


Centro de Estudios Agrarios y Ambientales


Webinar Short Course on
Modeling Patterns and Dynamics
of Species Occurrence

Presented by Dr. Darryl MacKenzie, Proteus Wildlife Research Consultants
and Dr. Jim Nichols, USGS Patuxent Wildlife Research Center
August 23-27, 2010
Schedule | Presenters | Register | References | Discussion | Other Courses
MacKenzie et al.

The US Geological Survey and Proteus Wildlife Research Consultants are offering a free introductory workshop, which is open to all who are interested.

The presence or absence of a species across a set of landscape units is a fundamental concept used widely in ecology (e.g., species range or distribution, epidemiology, habitat modeling, resource selection probability functions, as a monitoring metric, metapopulation studies, biodiversity and species co-occurrence). An important sampling issue, however, is that a species may not always be detected when present at a landscape unit. This will result in “false absences” causing parameter estimates to be biased if unaccounted for, possibly leading to misleading results and conclusions, even with moderate levels of imperfect detection.

This introductory workshop will cover many of the latest methods for modeling patterns and dynamics of species occurrence in a landscape while accounting for the imperfect detection of the species. Participants will be introduced to the basic methods of analysis with worked examples and a strong emphasis on study design issues. Due to limited time there will be no software demonstrations or class exercises. While primarily aimed at the beginner and intermediate level, more experienced researchers will also benefit from attending.

Darryl is also offering in-person workshops you may be interested in.

Because of travel restrictions, we will need to conduct the short course over the web. You will be able to view PowerPoints and demonstrations on your computer screen. You can listen either using your computer speakers or by calling a phone bridge long distance. Power point presentations, lecture notes, background information, and recordings of the sessions will be posted on the web. If you use the telephone or have a headset or microphone, you can ask questions orally. Otherwise, you can type in your questions.

Certificates of participation are available to those who participate. US Department of the Interior employees can receive credit through DOI Learn.

For more information, please contact Paul Geissler (, 970-226-9482)


Please register for the webinar at

You are encouraged to register, even if conflicts prevent you from participating in some or all of the sessions or if you are only interested in some sessions. You can participate in the sessions that you are interested in and that are at a convenient time. You can watch the recordings of other sessions at a more convenient time. Registering will allow us to provide you with updates and more information about the course. There is no charge. Some people on military bases have had a problem with this link. If you have a problem, please call Paul at 970-226-9482, and he will register you over the phone.


Files are available at We will update the PowerPoints and Handouts after each presentation. The FTP site will usually be updated before this web page. Recordings (.wmv) files for each session will be available a day after the presentation. Internet Explorer works well. Download them to your hard disk before opening them by right clicking and selecting “save link as”. Files on FTP server are not password protected. If asked, just leave the user name and password blank. The files are too large to e-mail. PowerPoints and handouts will be updated shortly before the presentations.
Hawaii Alaska Pacific Mountain Central Eastern UTC
8:30-10:30 10:30-12:30 11:30-1:30 12:30-2:30 1:30-3:30 2:30-4:30 18:30-20:30

SESSION 1 – Monday, August 23

* Background: inferences about animal populations
o Why estimate stuff (science, conservation/management)
+ science
# role of estimation in conduct of science
# generation of system dynamics
# inference from pattern vs. process
+ conservation/management
# roles of estimation in conduct of conservation/,management
o What to estimate
+ dictated by answer(s) to “why?” question
+ possible state variables (abundance, occupancy, species richness)
and associated vital rates
o How to estimate: basic principles
+ geographic variation
+ detectability
* Occupancy: relevance to ecology and conservation
o Classes of ecological questions
+ geographic range
+ habitat relationships and resource selection
+ metapopulation dynamics
+ large-scale monitoring
+ multispecies inferences
o Conservation/management
+ Status assessment for listing decisions
+ Disease modeling
* Statistical background
o concepts and notations
o covariate modeling and odds ratios
o hypothesis testing
o model selection and multimodel inference

SESSION 2 – Tuesday, August 24

* Single-season model
o basic sampling situation (data type)
o model history and development
o missing observations
o covariates
o model assumptions
o dealing with heterogeneity
o small sample/finite population inference
o modeling spatial correlation in occupancy

SESSION 3 – Wednesday, August 25

* Multiple-season model
o basic sampling situation (data type)
o model history and development
o implicit dynamics
o explicit dynamics
o missing observations
o covariates
o alternative parameterizations
o characterizing occupancy dynamics
o modeling spatial correlations in occupancy dynamics
* Multiple-season study design
o relationship with single-season designs
o long-term design
o adding sites over time

SESSION 4 – Thursday, August 26

* Single-season study design
o site selection
o allocation of effort
o design comparisons
o survey timing
o miscellaneous issues
o covariates

SESSION 5 -Friday, August 27

* Multi-species occupancy
o species co-occurrence (2 species) – single season
o species co-occurrence (2 species) – dynamics
o species richness or biodiversity
* Multistate occupancy
o 3-state occupancy – single season
o 3-state occupancy – dynamics
* other extensions
o Joint habitat-occupancy dynamics
o Incorporation of count data
o Marked animals
* Summary


• Darryl MacKenzie, Ph.D., Proteus Wildlife Research Consultants, Dunedin New Zealand, Darryl is a young biometrician with a rapidly growing international reputation. His main area of expertise is in using occupancy models for monitoring and research.

• James Nichols, Ph.D, USGS Patuxent Wildlife Research Center,, 301-497-5660. Jim is is a wildlife biologist and senior scientist at the USGS Patuxent Wildlife Research Center. His main interests are the dynamics and management of animal populations and communities.


• Paul Geissler, Ph.D., USGS Status and Trends of Biological Resources Program. Contact Paul if you have any questions or problems with the webinar.

Synthetic Book

* MacKenzie, D.I., J.D. Nichols, J.A. Royle, K.H. Pollock, L.L. Bailey, and, J.E. Hines. 2006. Occupancy estimation and modeling: inferring patterns and dynamics of species occurrence. Elsevier, San Diego, USA

Other Publications:

* Bailey, L. L., T. R. Simons, and K. H. Pollock. 2004. Estimating site occupancy and species detection probability parameters for terrestrial salamanders. Ecological Applications 14: 692-702.
* Barbraud, C. J. D. Nichols, J. E. Hines and H. Hafner. 2003. Estimating rates of extinction and colonization in colonial species and an extension to the metapopulation and community levels. Oikos 101:113-126.
* MacKenzie, D.I., and J.A. Royle. 2005. Designing efficient occupancy studies: general advice and tips on allocation of survey effort. Journal of Applied Ecology 42: 1105-1114.
* MacKenzie, D.I. 2005. What are the issues with ‘presence/absence’ data for wildlife managers? Journal of Wildlife Management 69: 849-860. MacKenzie, D.I. 2006. Modeling the probability of resource use: the effect of, and dealing with, detecting a species imperfectly. Journal of Wildlife Management 70: 367-374.
* MacKenzie, D.I., J.D. Nichols, N. Sutton, K. Kawanishi and L.L. Bailey. 2005. Improving inferences in population studies of rare species that are detected imperfectly. Ecology 86:1101-1113.
* MacKenzie, D.I. 2005. Was it there? Dealing with imperfect detection for species presence/absence data. Australian and New Zealand Journal of Statistics 47: 65-74.
* MacKenzie, D.I., and J.D. Nichols. 2004. Occupancy as a surrogate for abundance estimation. Animal Biodiversity and Conservation 27: 461-467.
* MacKenzie, D.I., J.A. Royle, J.A. Brown, and J.D. Nichols. 2004. Occupancy estimation and modeling for rare and elusive populations. Pages 149-172 in W.L. Thompson (ed), Sampling Rare or Elusive Species. Island Press, Washington, D.C.

Investigación en Cóndor andino

Durante los últimos días de Junio y principios de Julio se realizó un estudio de alimentación en cóndor, correspondiente a la época de invierno. Este trabajo de campo permite el estudio sobre ecología de la carroña en vida silvestre.

Se implementó un refugio de observación para el registro de cóndores que llegan a comer y la instalación de una cámara trampa a pocos metros de distancia de la carroña.

Víctor Escobar G.
Investigador asociado Fauna Australis

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