Urbanization Impacts on Mammals across Urban-Forest Edges and a Predictive Model of Edge Effects
With accelerating rates of urbanization worldwide, a better understanding of ecological processes at the wildland-urban interface is critical to conserve biodiversity. We explored the effects of high and low-density housing developments on forest-dwelling mammals. Based on habitat characteristics, we expected a gradual decline in species abundance across forest-urban edges and an increased decline rate in higher contrast edges. We surveyed arboreal mammals in sites of high and low housing density along 600 m transects that spanned urban areas and areas turn on adjacent native forest. We also surveyed forest controls to test whether edge effects extended beyond our edge transects. We fitted models describing richness, total abundance and individual species abundance. Low-density housing developments provided suitable habitat for most arboreal mammals. In contrast, high-density housing developments had lower species richness, total abundance and individual species abundance, but supported the highest abundances of an urban adapter (Trichosurus vulpecula). We did not find the predicted gradual decline in species abundance. Of four species analysed, three exhibited no response to the proximity of urban boundaries, but spilled over into adjacent urban habitat to differing extents. One species (Petaurus australis) had an extended negative response to urban boundaries, suggesting that urban development has impacts beyond 300 m into adjacent forest. Our empirical work demonstrates that high-density housing developments have negative effects on both community and species level responses, except for one urban adapter. We developed a new predictive model of edge effects based on our results and the literature. To predict animal responses across edges, our framework integrates for first time: (1) habitat quality/preference, (2) species response with the proximity to the adjacent habitat, and (3) spillover extent/sensitivity to adjacent habitat boundaries. This framework will allow scientists, managers and planners better understand and predict both species responses across edges and impacts of development in mosaic landscapes.
Main Authors: | , , , , |
---|---|
Format: | Artículo de revista biblioteca |
Language: | English |
Published: |
2015-01-08T14:27:54Z
|
Online Access: | https://repositorio.uchile.cl/handle/2250/120393 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
dig-infor-cl-20.500.12220-26165 |
---|---|
record_format |
koha |
spelling |
dig-infor-cl-20.500.12220-261652023-06-20T14:43:29Z Urbanization Impacts on Mammals across Urban-Forest Edges and a Predictive Model of Edge Effects Villaseñor, Nélida R. Driscoll, Don A. Escobar Cuadros, Martín A. H. Gibbons, Philip Lindenmayer, David B. With accelerating rates of urbanization worldwide, a better understanding of ecological processes at the wildland-urban interface is critical to conserve biodiversity. We explored the effects of high and low-density housing developments on forest-dwelling mammals. Based on habitat characteristics, we expected a gradual decline in species abundance across forest-urban edges and an increased decline rate in higher contrast edges. We surveyed arboreal mammals in sites of high and low housing density along 600 m transects that spanned urban areas and areas turn on adjacent native forest. We also surveyed forest controls to test whether edge effects extended beyond our edge transects. We fitted models describing richness, total abundance and individual species abundance. Low-density housing developments provided suitable habitat for most arboreal mammals. In contrast, high-density housing developments had lower species richness, total abundance and individual species abundance, but supported the highest abundances of an urban adapter (Trichosurus vulpecula). We did not find the predicted gradual decline in species abundance. Of four species analysed, three exhibited no response to the proximity of urban boundaries, but spilled over into adjacent urban habitat to differing extents. One species (Petaurus australis) had an extended negative response to urban boundaries, suggesting that urban development has impacts beyond 300 m into adjacent forest. Our empirical work demonstrates that high-density housing developments have negative effects on both community and species level responses, except for one urban adapter. We developed a new predictive model of edge effects based on our results and the literature. To predict animal responses across edges, our framework integrates for first time: (1) habitat quality/preference, (2) species response with the proximity to the adjacent habitat, and (3) spillover extent/sensitivity to adjacent habitat boundaries. This framework will allow scientists, managers and planners better understand and predict both species responses across edges and impacts of development in mosaic landscapes. 2015-01-08T14:27:54Z 2015-01-08T14:27:54Z 2015-01-08T14:27:54Z 2014 Artículo de revista PLoS ONE 9(5): e97036. (2014) doi:10.1371/journal.pone.0097036 https://repositorio.uchile.cl/handle/2250/120393 en http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ Attribution-NonCommercial-NoDerivs 3.0 Chile |
institution |
INFOR CL |
collection |
DSpace |
country |
Chile |
countrycode |
CL |
component |
Bibliográfico |
access |
En linea |
databasecode |
dig-infor-cl |
tag |
biblioteca |
region |
America del Sur |
libraryname |
Biblioteca del INFOR Chile |
language |
English |
description |
With accelerating rates of urbanization worldwide, a better understanding of ecological processes at the wildland-urban
interface is critical to conserve biodiversity. We explored the effects of high and low-density housing developments on
forest-dwelling mammals. Based on habitat characteristics, we expected a gradual decline in species abundance across
forest-urban edges and an increased decline rate in higher contrast edges. We surveyed arboreal mammals in sites of high
and low housing density along 600 m transects that spanned urban areas and areas turn on adjacent native forest. We also
surveyed forest controls to test whether edge effects extended beyond our edge transects. We fitted models describing
richness, total abundance and individual species abundance. Low-density housing developments provided suitable habitat
for most arboreal mammals. In contrast, high-density housing developments had lower species richness, total abundance
and individual species abundance, but supported the highest abundances of an urban adapter (Trichosurus vulpecula). We
did not find the predicted gradual decline in species abundance. Of four species analysed, three exhibited no response to
the proximity of urban boundaries, but spilled over into adjacent urban habitat to differing extents. One species (Petaurus
australis) had an extended negative response to urban boundaries, suggesting that urban development has impacts
beyond 300 m into adjacent forest. Our empirical work demonstrates that high-density housing developments have
negative effects on both community and species level responses, except for one urban adapter. We developed a new
predictive model of edge effects based on our results and the literature. To predict animal responses across edges, our
framework integrates for first time: (1) habitat quality/preference, (2) species response with the proximity to the adjacent
habitat, and (3) spillover extent/sensitivity to adjacent habitat boundaries. This framework will allow scientists, managers
and planners better understand and predict both species responses across edges and impacts of development in mosaic
landscapes. |
format |
Artículo de revista |
author |
Villaseñor, Nélida R. Driscoll, Don A. Escobar Cuadros, Martín A. H. Gibbons, Philip Lindenmayer, David B. |
spellingShingle |
Villaseñor, Nélida R. Driscoll, Don A. Escobar Cuadros, Martín A. H. Gibbons, Philip Lindenmayer, David B. Urbanization Impacts on Mammals across Urban-Forest Edges and a Predictive Model of Edge Effects |
author_facet |
Villaseñor, Nélida R. Driscoll, Don A. Escobar Cuadros, Martín A. H. Gibbons, Philip Lindenmayer, David B. |
author_sort |
Villaseñor, Nélida R. |
title |
Urbanization Impacts on Mammals across Urban-Forest Edges and a Predictive Model of Edge Effects |
title_short |
Urbanization Impacts on Mammals across Urban-Forest Edges and a Predictive Model of Edge Effects |
title_full |
Urbanization Impacts on Mammals across Urban-Forest Edges and a Predictive Model of Edge Effects |
title_fullStr |
Urbanization Impacts on Mammals across Urban-Forest Edges and a Predictive Model of Edge Effects |
title_full_unstemmed |
Urbanization Impacts on Mammals across Urban-Forest Edges and a Predictive Model of Edge Effects |
title_sort |
urbanization impacts on mammals across urban-forest edges and a predictive model of edge effects |
publishDate |
2015-01-08T14:27:54Z |
url |
https://repositorio.uchile.cl/handle/2250/120393 |
work_keys_str_mv |
AT villasenornelidar urbanizationimpactsonmammalsacrossurbanforestedgesandapredictivemodelofedgeeffects AT driscolldona urbanizationimpactsonmammalsacrossurbanforestedgesandapredictivemodelofedgeeffects AT escobarcuadrosmartinah urbanizationimpactsonmammalsacrossurbanforestedgesandapredictivemodelofedgeeffects AT gibbonsphilip urbanizationimpactsonmammalsacrossurbanforestedgesandapredictivemodelofedgeeffects AT lindenmayerdavidb urbanizationimpactsonmammalsacrossurbanforestedgesandapredictivemodelofedgeeffects |
_version_ |
1769604078340407296 |