Consequences of Intraspecific Competition for Floral Resources in Heterogeneous Landscapes for Eusocial Bees

Published: Jan. 1, 2024

Agricultural intensification is widely recognised as a primary driver of pollinator loss, but the success land-management actions designed to remediate its impact often mixed. Payments farmers increase habitat connectivity or availability floral and nesting resources may only result in short-term gains even unintended consequences. The reasons lie changes interaction networks competition intensity that remain poorly understood. Models pollination service typically implicitly assume population dynamics are regulated by nest-site availability, though empirical evidence suggests occupancy likely at least part dependent on resource availability. To investigate consequences for coarse-grained agricultural landscapes we extended an established model bees combining optimal foraging dynamics, include new functions depletion realistic colony dynamics. We find intra-specific occurs late season forcing forage underutilised sites situated further towards their range limits. A lower rate energy acquisition ultimately limits size peak delays timing. Consequently, can limit distribution while same time contributing more stable efficacious service. Although was not found be important establishment success, effect hunger gap early indirectly influences later leading complex outcomes.

Language: Английский

Consequences of intraspecific competition for floral resources in heterogeneous landscapes for eusocial bees

Ecological Modelling, Journal Year: 2024, Volume and Issue: 496, P. 110844 - 110844

Published: Aug. 29, 2024

Agricultural intensification is widely recognised as a primary driver of pollinator loss, but the success land-management actions designed to remediate its impact often mixed. Payments farmers increase habitat connectivity or availability floral and nesting resources may only result in short-term gains even unintended consequences. The reasons lie changes interaction networks competition intensity that remain poorly understood. Models pollination service typically implicitly assume population dynamics are regulated by nest-site availability, though empirical evidence suggests occupancy likely at least part dependent on resource availability. To investigate consequences for coarse-grained agricultural landscapes we extended an established model bees combining optimal foraging dynamics, include new functions depletion realistic colony dynamics. We find intra-specific occurs late season forcing forage underutilised sites situated further towards their range limits. A lower rate energy acquisition ultimately limits size peak delays timing. Consequently, can limit distribution while same time contributing more stable efficacious service. Although was not found be important establishment success, effect hunger gap early indirectly influences later leading complex outcomes.

Language: Английский