On the usage and measurement of landscape connectivity

@article{Tischendorf2000OnTU,
  title={On the usage and measurement of landscape connectivity},
  author={Lutz Tischendorf and Lenore Fahrig},
  journal={Oikos},
  year={2000},
  volume={90},
  pages={7-19}
}
This paper examines the usage and measurement of “landscape connectivity” in 33 recent studies. Connectivity is defined as the degree to which a landscape facilitates or impedes movement of organisms among resource patches. However, connectivity is actually used in a variety of ways in the literature. This has led to confusion and lack of clarity related to (1) function vs structure, (2) patch isolation vs landscape connectivity and, (3) corridors vs connectivity. We suggest the term… 

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References

SHOWING 1-10 OF 118 REFERENCES
Do Habitat Corridors Provide Connectivity
Skeptics have questioned the empirical evidence that corridors provide landscape connectivity. Some also have suggested dangers of corridors. We reviewed published studies that empirically addressed
Using Landscape Indices to Predict Habitat Connectivity
TLDR
Nine common indices of habitat pattern were examined and a new pattern index was identified, termed patch cohesion, for which the fit was much better and was found to be insensitive to the details and artifacts of the dispersal model.
Connectivity is a vital element of landscape structure
In a recent FORUM article, Dunning et al. (1992) put forward a framework of landscape processes that stimulated considerable discussion amongst us. We are in general agreement with their ideas, but
Quantifying Landscape Spatial Pattern: What Is the State of the Art?
TLDR
Several important needs are suggested for future research, including continued investigation of scaling issues, development of indices that measure specific components of spatial pattern, and efforts to make point-data analysis more compatible with ecological theory.
Connectivity and complexity in landscapes and ecosystems
TLDR
Simulations of multi-species systems show that, below a critical rate, disturbance regimes have little impact on species richness, but with super-critical rates of disturbance the rate of decrease in species richness depends on the balance between theRate of disturbance and dispersal range.
A Comparison of Corridors and Intrinsic Connectivity to Promote Dispersal in Transient Successional Landscapes
Low‐vagility organisms that specialize on transitory successional habitats may be especially dependent upon habitat connectivity to maintain population viability. We analyzed the theoretical
Landscape connectivity and population distributions in heterogeneous environments
TLDR
Assessment of the independent effects of habitat affinity and habitat carrying capacity on population distributions revealed that the differential interaction of species with landscape structure was the primary determinant of distributional patterns.
...
...