TY - JOUR
T1 - Simulating population recovery of an aquatic isopod: Effects of timing of stress and landscape structure
AU - Galic, N.
AU - Baveco, H.
AU - Hengeveld, G.M.
AU - Thorbeck, P.
AU - Bruns, E.
AU - Brink, P.
N1 - Reporting year: 2012
Metis note: 5203; WAG; AnE; MoVe
PY - 2012
Y1 - 2012
N2 - In agroecosystems, organisms may regularly be exposed to anthropogenic stressors, e.g. pesticides. Species' sensitivity to stress depends on toxicity, life-history, and landscape structure. We developed an individual-based model of an isopod, Asellus aquaticus, to explore how timing of stress events affects population dynamics in a seasonal environment. Furthermore, we tested the relevance of habitat connectivity and spatial distribution of stress for the recovery of a local and total population. The simulation results indicated that population recovery is mainly driven by reproductive periods. Furthermore, high habitat connectivity led to faster recovery both for local and total populations. However, effects of landscape structure disappeared for homogeneously stressed populations, where local survivors increased recovery rate. Finally, local populations recovered faster, implying that assessing recovery in the field needs careful consideration of spatial scale for sampling. We emphasize the need for a coherent definition of recovery for more relevant ecosystem risk assessment and management.
AB - In agroecosystems, organisms may regularly be exposed to anthropogenic stressors, e.g. pesticides. Species' sensitivity to stress depends on toxicity, life-history, and landscape structure. We developed an individual-based model of an isopod, Asellus aquaticus, to explore how timing of stress events affects population dynamics in a seasonal environment. Furthermore, we tested the relevance of habitat connectivity and spatial distribution of stress for the recovery of a local and total population. The simulation results indicated that population recovery is mainly driven by reproductive periods. Furthermore, high habitat connectivity led to faster recovery both for local and total populations. However, effects of landscape structure disappeared for homogeneously stressed populations, where local survivors increased recovery rate. Finally, local populations recovered faster, implying that assessing recovery in the field needs careful consideration of spatial scale for sampling. We emphasize the need for a coherent definition of recovery for more relevant ecosystem risk assessment and management.
KW - international
U2 - 10.1016/j.envpol.2011.12.024
DO - 10.1016/j.envpol.2011.12.024
M3 - Article
SN - 0269-7491
VL - 163
SP - 91
EP - 99
JO - Environmental Pollution
JF - Environmental Pollution
ER -