Using experimental reintroductions to resolve the roles of habitat quality and metapopulation dynamics on patch occupancy in fragmented landscapes

2021 ◽  
Author(s):  
Doug P. Armstrong ◽  
Rebecca L. Boulton ◽  
Nikki McArthur ◽  
Susanne Govella ◽  
Nic Gorman ◽  
...  
Keyword(s):  
Habitat Quality ◽  
Metapopulation Dynamics ◽  
Patch Occupancy ◽  
Fragmented Landscapes

Metapopulation Dynamics in Highly Fragmented Landscapes

2004 ◽  
pp. 73-103 ◽  
Author(s):  
Otso Ovaskainen ◽  
Ilkka Hanski
Keyword(s):  
Metapopulation Dynamics ◽  
Fragmented Landscapes

scholarly journals A demographic, spatially explicit patch occupancy model of metapopulation dynamics and persistence

Ecology ◽  
2014 ◽  
Vol 95 (11) ◽  
pp. 3149-3160 ◽  
Author(s):  
C. S. Sutherland ◽  
D. A. Elston ◽  
X. Lambin
Keyword(s):  
Spatially Explicit ◽  
Metapopulation Dynamics ◽  
Patch Occupancy ◽  
Occupancy Model ◽  
Patch Occupancy Model

scholarly journals How to find a metapopulationThis review is one of a series dealing with some aspects of the impact of habitat fragmentation on animals and plants. This series is one of several virtual symposia focussing on ecological topics that will be published in the Journal from time to time.

2007 ◽  
Vol 85 (10) ◽  
pp. 1031-1048 ◽  
Author(s):  
D.A. Driscoll
Keyword(s):  
Native Species ◽  
Field Data ◽  
Spatial Dynamics ◽  
Metapopulation Dynamics ◽  
Data Sets ◽  
Fragmented Landscapes ◽  
Metapopulation Theory ◽  
Metapopulation Models ◽  
The Impact ◽  
Analytical Approaches

Where habitat loss and fragmentation is severe, many native species are likely to have reduced levels of dispersal between remnant populations. For those species to avoid regional extinction in fragmented landscapes, they must undergo some kind of metapopulation dynamics so that local extinctions are countered by recolonisation. The importance of spatial dynamics for regional survival means that research into metapopulation dynamics is essential. In this review I explore the approaches taken to examine metapopulation dynamics, highlight the analytical methods used to get the most information out of field data, and discover some of the major research gaps. Statistical models, including Hanski’s incidence function model (IFM) are frequently applied to presence–absence data, an approach that is often strengthened using long-term data sets that document extinctions and colonisations. Recent developments are making the IFM more biologically realistic and expanding the range of situations for which the model is relevant. Although accurate predictions using the IFM seem unlikely, it may be useful for ranking management decisions. A key weakness of presence–absence modelling is that the mechanisms underlying spatial dynamics remain inferential, so combining modelling approaches with detailed demographic research is warranted. For species where very large data sets cannot be obtained to facilitate statistical modelling, a demographic approach alone or with stochastic modelling may be the only viable research angle to take. Dispersal is a central process in metapopulation dynamics. Research combining mark–recapture or telemetry methods with model-selection procedures demonstrate that dispersal is frequently oversimplified in conceptual and statistical metapopulation models. Dispersal models like the island model that underlies classic metapopulation theory do not approximate the behaviour of real species in fragmented landscapes. Nevertheless, it remains uncertain if additional biological realism will improve predictions of statistical metapopulation models. Genetic methods can give better estimates of dispersal than direct methods and take less effort, so they should be routinely explored alongside direct ecological methods. Recent development of metacommunity theory (communities connected by dispersal) emphasises a range of mechanisms that complement metapopulation theory. Taking both theories into account will enhance interpretation of field data. The extent of metapopulation dynamics in human modified landscapes remains uncertain, but we have a powerful array of field and analytical approaches for reducing this knowledge gap. The most informative way forward requires that many species are studied in the same fragmented landscape by applying a selection of approaches that reveal complementary aspects of spatial dynamics.

Incorporating behavior-based indices of connectivity into spatially explicit population models

2012 ◽  
Vol 90 (2) ◽  
pp. 222-236 ◽  
Author(s):  
C.E. Rizkalla ◽  
R.K. Swihart
Keyword(s):  
Population Models ◽  
Spatially Explicit ◽  
Patch Occupancy ◽  
Ecological Processes ◽  
Forest Patch ◽  
Fragmented Landscapes ◽  
Direct Observations ◽  
Behavior Based ◽  
Potential Methods ◽  
Parameter Values

Measuring connectivity in fragmented landscapes remains a central problem in ecology. Connectivity metrics range from descriptors of landscape structure to direct observations of a species’ ability to move to and colonize a forest patch. We constructed individual-based spatially explicit population models for a guild of forest rodents in Indiana to test the ability of structural and actual, or behavioral, measures of connectivity to predict patch and landscape occupancy and abundance. Model accuracy was assessed using comparisons with data from trapping studies. Predicted abundances within patches correlated with empirical data for five out of six species, but predicted patterns of patch occupancy corresponded with observations for only one species. Discrepancies may be due to inaccurate parameter values or the absence from the models of ecological processes such as conspecific attraction and competition. Nonetheless, the models demonstrated the utility of patch immigration as a measure of connectivity in explaining population abundance in fragmented landscapes. We discuss potential methods of collecting these behavior-based data.

The role of habitat quality in fragmented landscapes: a conceptual overview and prospectus for future research

Oecologia ◽  
2010 ◽  
Vol 163 (2) ◽  
pp. 535-547 ◽  
Author(s):  
Alessio Mortelliti ◽  
Giovanni Amori ◽  
Luigi Boitani
Keyword(s):  
Habitat Quality ◽  
Future Research ◽  
Fragmented Landscapes ◽  
Conceptual Overview

scholarly journals Variability in primary productivity determines metapopulation dynamics

2016 ◽  
Vol 283 (1828) ◽  
pp. 20152998 ◽  
Author(s):  
Néstor Fernández ◽  
Jacinto Román ◽  
Miguel Delibes
Keyword(s):  
Habitat Quality ◽  
Primary Productivity ◽  
Energy Levels ◽  
Empirical Evaluation ◽  
Structured Populations ◽  
Landscape Configuration ◽  
Ecosystem Functions ◽  
Metapopulation Dynamics ◽  
Habitat Occupancy ◽  
Occupancy Dynamics

Temporal variability in primary productivity can change habitat quality for consumer species by affecting the energy levels available as food resources. However, it remains unclear how habitat-quality fluctuations may determine the dynamics of spatially structured populations, where the effects of habitat size, quality and isolation have been customarily assessed assuming static habitats. We present the first empirical evaluation on the effects of stochastic fluctuations in primary productivity—a major outcome of ecosystem functions—on the metapopulation dynamics of a primary consumer. A unique 13-year dataset from an herbivore rodent was used to test the hypothesis that inter-annual variations in primary productivity determine spatiotemporal habitat occupancy patterns and colonization and extinction processes. Inter-annual variability in productivity and in the growing season phenology significantly influenced habitat colonization patterns and occupancy dynamics. These effects lead to changes in connectivity to other potentially occupied habitat patches, which then feed back into occupancy dynamics. According to the results, the dynamics of primary productivity accounted for more than 50% of the variation in occupancy probability, depending on patch size and landscape configuration. Evidence connecting primary productivity dynamics and spatiotemporal population processes has broad implications for metapopulation persistence in fluctuating and changing environments.

scholarly journals Habitat Quality and Geometry Affect Patch Occupancy of Two Orthopteran Species

PLoS ONE ◽  
2013 ◽  
Vol 8 (5) ◽  
pp. e65850 ◽  
Author(s):  
Gilberto Pasinelli ◽  
Kim Meichtry-Stier ◽  
Simon Birrer ◽  
Bruno Baur ◽  
Martin Duss
Keyword(s):  
Habitat Quality ◽  
Patch Occupancy ◽  
Orthopteran Species

scholarly journals Predicting patch occupancy in fragmented landscapes at the rangewide scale for an endangered species: an example of an American warbler

2011 ◽  
Vol 18 (2) ◽  
pp. 158-167 ◽  
Author(s):  
Bret A. Collier ◽  
Julie E. Groce ◽  
Michael L. Morrison ◽  
John C. Newnam ◽  
Andrew J. Campomizzi ◽  
...  
Keyword(s):  
Endangered Species ◽  
Patch Occupancy ◽  
Fragmented Landscapes

Connectivity and metapopulation dynamics in highly fragmented landscapes

2010 ◽  
pp. 44-71 ◽  
Author(s):  
Atte Moilanen ◽  
Ilkka Hanski
Keyword(s):  
Metapopulation Dynamics ◽  
Fragmented Landscapes
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