Data from: Can matrix structure affect animal navigation between fragments? A dispersal experiment using release platforms
Creators
- 1. Instituto Federal de Educação, Ciência e Tecnologia de Mato Grosso
- 2. Ben-Gurion University of the Negev
- 3. Federal University of Rio de Janeiro
- 4. Federal University of Mato Grosso do Sul
Description
The persistence of species in fragmented landscapes relies on landscape connectivity and individuals' ability in dispersing among habitat patches. Accordingly, matrix structure can affect the orientation of dispersing individuals across the landscape. In this study, we measured the impact of matrix structure on the dispersal performance of the white-eared opossum (Didelphis albiventris). We released individuals in three types of matrix: bare field, corn crops and soybean crops, with distances of 30, 50 and 100 m to the nearest habitat patch. To test if the release height would affect the individuals' dispersal performance, we released animals from the ground and from 2 m high platforms. We released and tracked 14 individuals in bare field on the ground; 30 in corn crops, 22 on the ground and 8 on platforms; 17 on soybeans crop, 12 on the ground and 5 on platforms. The type of matrix influenced the perceptual range. Perceptual range was 100 m in bare field, 50 m in cornfield and less than 30 m in soybean field. The platforms only increased the perceptual range of individuals in the cornfield from 50 to 100 m. Visual and olfactory cues would cause this effect. We conclude that matrix structure affects dispersal performance, and that vertical elements of the matrix, such as scattered trees, may increase orientation in crop fields during inter-patch dispersal.
Notes
id: a sequential number of the individual according with the capture order
sp: Species of the individual that was captured
id_l: ear ring attached at the left ear
id_r: ear ring attached at the right ear
date_cap: the day that the individual was captured
mass: mass of the individual in kilogram
l_skull: length of the individual skull in centimeter
w_skul: width of the individual skull in centimeter
sex: sex of the individual
age: age class estimated using the molar teeth
date_rel: The day that the individual was released
dist: the distance from the fragment from where the individual was released
x: the latitude of the place where the individual was released
y: the longitude of the place where the individual was released
matrix: the kind os matrix where the individual was released
time: the time of the day when the individual was released
azi_l: at the release place, using a compass, this is the azimuth to te left limit of the target fragment
azi_r: at the release place, using a compass, this is the azimuth to te right limit of the target fragment
azimuth: using a compass, the direction to where the individual moved
move: the distance moved in the previous azimuth
time_orientation: we measured to some individuals, how long they took to iniciate the movement. These data were not used at this papper.
arrive:if the individual reached the target fragment, the value is 1, if not, the value is 0
row: if the movement was realized at the plantation row, the value is 1, if not, the value is 0
platform: if the release happened from a plataform, the value is one, if not, the value is 0
Files
Table_S1.txt
Files
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Additional details
Related works
- Is derived from
- 10.5061/dryad.31zcrjdn6 (DOI)