Does local habitat management or large-scale landscape composition alter the biocontrol services provided to pumpkin agroecosystems?

2016 ◽  
Vol 92 ◽  
pp. 181-194 ◽  
Author(s):  
Benjamin W. Phillips ◽  
Mary M. Gardiner
Rangifer ◽  
2015 ◽  
Vol 35 (2) ◽  
pp. 123 ◽  
Author(s):  
Paula Bentham ◽  
Brian Coupal

The Recovery Strategy for the Woodland Caribou (Rangifer tarandus caribou), Boreal Population in Canada (EC, 2012), identifies coordinated actions to reclaim woodland caribou habitat as a key step to meeting current and future caribou population objectives. Actions include restoring industrial landscape features such as roads, seismic lines, pipelines, cut-lines, and cleared areas in an effort to reduce landscape fragmentation and the changes in caribou population dynamics associated with changing predator-prey dynamics in highly fragmented landscapes. Reliance on habitat restoration as a recovery action within the federal recovery strategy is high, considering all Alberta populations have less than 65% undisturbed habitat, which is identified in the recovery strategy as a threshold providing a 60% chance that a local population will be self-sustaining. Alberta’s Provincial Woodland Caribou Policy also identifies habitat restoration as a critical component of long-term caribou habitat management. We review and discuss the history of caribou habitat restoration programs in Alberta and present outcomes and highlights of a caribou habitat restoration workshop attended by over 80 representatives from oil and gas, forestry, provincial and federal regulators, academia and consulting who have worked on restoration programs. Restoration initiatives in Alberta began in 2001 and have generally focused on construction methods, revegetation treatments, access control programs, and limiting plant species favourable to alternate prey. Specific treatments include tree planting initiatives, coarse woody debris management along linear features, and efforts for multi-company and multi-stakeholder coordinated habitat restoration on caribou range. Lessons learned from these programs have been incorporated into large scale habitat restoration projects near Grande Prairie, Cold Lake, and Fort McMurray. A key outcome of our review is the opportunity to provide a unified approach for restoration program planning, best practices, key performance indicators, and monitoring considerations for future programs within Canada.


Oikos ◽  
2009 ◽  
Vol 118 (8) ◽  
pp. 1174-1180 ◽  
Author(s):  
Shalene Jha ◽  
John H. Vandermeer

Oryx ◽  
2017 ◽  
Vol 53 (2) ◽  
pp. 310-320 ◽  
Author(s):  
Jose W. Valdez ◽  
Kaya Klop-Toker ◽  
Michelle P. Stockwell ◽  
Loren Fardell ◽  
Simon Clulow ◽  
...  

AbstractThe creation or restoration of habitat to mitigate biodiversity loss is a common conservation strategy. Evidence-based research via an extensively monitored trial study should be undertaken prior to large-scale implementation to predict success and identify potential limiting factors. We constructed an experimental trial habitat for the threatened green and golden bell frog Litoria aurea, in Australia, to inform a broader programme of compensatory habitat creation. Individuals were released into the trial plot and a nearby natural wetland for comparison to determine if the created habitat would support their growth, survival and persistence. Half of the trial waterbodies were enclosed within an exclusion fence to separate the effects of habitat suitability from ecological processes. We found the habitat provided L. aurea with sufficient resources to grow, survive and persist for 3 years. However, no breeding occurred, and further investigations need to focus on understanding the drivers of reproduction. Although a disease outbreak occurred during the study, persistence continued for the next 2 years. This was attributed to the large number of individuals released, a strategy we recommend for future mitigation strategies to account for low survival and high turnover rates. Dispersal probably affected abundance in the unfenced areas, and landscape-level initiatives are suggested for this species. This study demonstrates that experimental trials are valuable, as they can inform future habitat management by identifying limitations that could hinder success prior to the implementation of large-scale initiatives.


2008 ◽  
Vol 45 (3) ◽  
pp. 161-173 ◽  
Author(s):  
Janne Miettinen ◽  
Pekka Helle ◽  
Ari Nikula ◽  
Pekka Niemelä

2020 ◽  
Vol 35 (10) ◽  
pp. 2209-2224 ◽  
Author(s):  
Ulrich Neumüller ◽  
Hannah Burger ◽  
Sabrina Krausch ◽  
Nico Blüthgen ◽  
Manfred Ayasse

Abstract Context Landscape and local habitat traits moderate wild bee communities. However, whether landscape effects differ between local habitat types is largely unknown. Objectives We explored the way that wild bee communities in three distinct habitats are shaped by landscape composition and the availability of flowering plants by evaluating divergences in response patterns between habitats. Methods In a large-scale monitoring project across 20 research areas, wild bee data were collected on three habitats: near-natural grassland, established flower plantings and residual habitats (e.g. field margins). Additionally, landscape composition was mapped around the research areas. Results Our monitoring produced a dataset of 27,650 bees belonging to 324 species. Bee communities on all three habitats reacted similarly to local flower availability. Intensively managed grassland in the surrounding landscape had an overall negative effect on the studied habitats. Other landscape variables produced diverging response patterns that were particularly pronounced during early and late season. Bee communities in near-natural grassland showed a strong positive response to ruderal areas. Flower plantings and residual habitats such as field margins showed a pronounced positive response to extensively managed grassland and woodland edges. Response patterns regarding bee abundance were consistent with those found for species richness. Conclusion We advise the consideration of local habitat type and seasonality when assessing the effect of landscape context on bee communities. A reduction in the intensity of grassland management enhances bee diversity in a broad range of habitats. Moreover, wild bee communities are promoted by habitat types such as ruderal areas or woodland edges.


2015 ◽  
Vol 18 (5) ◽  
pp. 442-450 ◽  
Author(s):  
T. O. Mérő ◽  
R. Bocz ◽  
L. Polyák ◽  
G. Horváth ◽  
S. Lengyel

2005 ◽  
Vol 214 (1-3) ◽  
pp. 331-343 ◽  
Author(s):  
Tara L. Warren ◽  
Matthew G. Betts ◽  
Antony W. Diamond ◽  
Graham J. Forbes

Sign in / Sign up

Export Citation Format

Share Document