You are here

Keyword: population dynamics

Status of neotropical migrant landbirds in the Midwest: identifying species of management concern

Publications Posted on: May 16, 2006
We ranked species of neotropical migrant landbirds by decreasing management concern for their viability in the Midwest. This was part of a coordinated effort by regional working groups of the Partners In Flight Program, an interagency program for the conservation of neotropical migratory birds (NTMBs). Species were ranked by seven criteria, developed by working group co-chairs and participants in the Partners in Flight Program.

An interactive database for setting conservation priorities for western neotropical migrants

Publications Posted on: May 16, 2006
We develop and explain a species ranking system for the states and physiographic regions of the Neotropical Migratory Bird Conservation Program's West Working Group. The ranking criteria attempt to measure characteristics of species which make them vulnerable to extirpation, as well as assess the relative importance of different geographic and/or political areas to the species in question.

Management and conservation of migratory landbirds overwintering in the neotropics

Publications Posted on: May 16, 2006
Loss of tropical broadleaved forests and concurrent population declines of long-distance migratory birds in temperate breeding areas have been closely linked in both scientific and popular literature; however, little evidence of a causal association currently exists.

Stopover habitat: management implications and guidelines

Publications Posted on: May 16, 2006
If persistence of migrant populations depends on the ability to find favorable conditions for survival throughout the annual cycle, factors associated with the en-route ecology of migrants must figure in any analysis of population change and in development of a comprehensive conservation "strategy." We view en-route habitat selection as a hierarchical process.

A statistical model of expansion in a colony of black-tailed prairie dogs

Publications Posted on: May 15, 2006
To predict prairie dog establishment in areas adjacent to a colony we sample: (1) VISIBILITY through the vegetation using a target, (2) POPULATION DENSITY at the cology edge, (3) DISTANCE from the edge to the potential site of settlement, and (4) % FORB COVER.