Multiscale patterns of movement in fragmented landscapes and consequences on demography of the snail kite in Florida

The Journal of Animal Ecology
Julien MartinJames E Hines

Abstract

1. Habitat loss and fragmentation are major factors affecting vertebrate populations. A major effect of these habitat alterations is that they reduce movement of organisms. Despite the accepted importance of movement in driving the dynamics of many natural populations, movement of vertebrates in fragmented landscapes have seldom been estimated with robust statistical methods. 2. We estimated movement probabilities of snail kites Rosthramus sociabilis within the remaining wetlands in Florida. Using both radio-telemetry and banding information, we used a multistate modelling approach to estimate transition probabilities at two temporal scales (month; year) and multiple spatial scales. We examined kite movement among wetlands altered by three different levels of fragmentation: among wetlands separated by small physical barriers (e.g. road); among wetlands separated by moderate amount of matrix (< 5 km); and among wetlands separated by extensive matrix areas (> 15 km). 3. Kites moved extensively among contiguous wetlands (movement probability 0.29 per month), but significantly less among isolated wetlands (movement probability 0.10 per month). 4. Kites showed high levels of annual site fidelity to most isolated wetlands (probabilit...Continue Reading

Citations

Nov 16, 2011·Proceedings of the National Academy of Sciences of the United States of America·Robert J FletcherWiley M Kitchens
Mar 30, 2007·Conservation Biology : the Journal of the Society for Conservation Biology·Julien MartinJames E Hines
Oct 19, 2016·Ecological Applications : a Publication of the Ecological Society of America·Christopher E CattauWiley M Kitchens
Apr 6, 2017·The Journal of Animal Ecology·Ellen P RobertsonJames D Austin
Aug 8, 2018·Proceedings of the National Academy of Sciences of the United States of America·Ellen P RobertsonDenis Valle
Nov 13, 2020·The Journal of Animal Ecology·Brian E ReichertWiley M Kitchens

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