A5056854078- Ecology and Vegetation Dynamics Studies
- Plant and animal studies
- Species Distribution and Climate Change
- Fire effects on ecosystems
- Tree-ring climate responses
- Wildlife Ecology and Conservation
- Landslides and related hazards
- Isotope Analysis in Ecology
- Rangeland and Wildlife Management
- Land Use and Ecosystem Services
- Geology and Paleoclimatology Research
- Animal Ecology and Behavior Studies
- Plant Water Relations and Carbon Dynamics
- Ecosystem dynamics and resilience
- Insect and Arachnid Ecology and Behavior
- Bryophyte Studies and Records
- Conservation, Biodiversity, and Resource Management
- Coastal wetland ecosystem dynamics
- Forest Insect Ecology and Management
- Insect and Pesticide Research
- Lichen and fungal ecology
- Marine and coastal plant biology
- Botany and Plant Ecology Studies
- Identification and Quantification in Food
- Plant Parasitism and Resistance
University of Victoria
2016-2025
Tula Foundation
2015-2024
Hakai Institute
2015-2024
Canadian Museum of Nature
2024
University of Guelph
2024
Kai Research (United States)
2024
Université Laval
2024
University of British Columbia
2004-2020
Hudson Institute
2018
John Wiley & Sons (United States)
2018
The concept of trophic levels is one the oldest in ecology and informs our understanding energy flow top-down control within food webs, but it has been criticized for ignoring omnivory. We tested whether were apparent 58 real webs four habitat types by examining patterns position. A large proportion taxa (64.4%) occupied integer positions, suggesting that discrete do exist. Importantly however, majority those positions aggregated around values 0 1, representing plants herbivores. For...
Ecological restoration projects have traditionally focused on vegetation as both a means (seeding, planting, and substrate amendments) ends (success based upon primary productivity diversity). This vegetation‐centric approach to ecological stems from an historic emphasis esthetics cost but provides limited measure of total ecosystem functioning overlooks alternative ways achieve current future targets. We advocate shift planning beyond the plant community toward physical biological...
Abstract Land‐use change is the largest proximate threat to biodiversity yet remains one of most complex manage. In British Columbia (BC), where large mammals roam extensive tracts intact habitat, continued land‐use development global concern. Extant mammal diversity in BC unrivalled North America owing, part, its unique position at intersection alpine, boreal, and temperate biomes. Despite high conservation values, understanding cumulative ecological impacts from human limited. Using...
Abstract Human occupation is usually associated with degraded landscapes but 13,000 years of repeated by British Columbia’s coastal First Nations has had the opposite effect, enhancing temperate rainforest productivity. This particularly case over last 6,000 when intensified intertidal shellfish usage resulted in accumulation substantial shell middens. We show that soils at habitation sites are higher calcium and phosphorous. Both these limiting factors rainforests. Western redcedar ( Thuja...
Abstract Biodiversity community science projects are growing rapidly in popularity. The enormous amounts of data generated by these programs transforming how we conduct ecological research and conservation management. However, as with other biodiversity surveys, datasets suffer from biases time locations observations. To better use data, modeled the spatial present popular platform, iNaturalist. iNaturalist uses crowdsourcing to collect georeferenced time‐stamped observations all taxa...
Ecological communities are impacted by anthropogenic changes in both habitat geometry (i.e. amount, shape, fragmentation and connectivity of habitat) disturbance regime. Although the effect each these drivers on diversity is well‐documented, few studies have considered how interact to affect diversity. We used a miniature landscape moss patches experimentally manipulate frequency microarthropod communities. Species richness abundance local declined linearly with rate all experimental...
Summary In many biodiversity surveys, a small proportion of species require disproportionate amount researcher's time and effort to detect or identify. If we are interested in predicting diversity composition, what the consequences for statistical power ignoring difficult – that is, surveying only subset full suite species? We analysed 10 data sets on variety taxa, at different spatial scales, assess correlations richness composition between set subsets with numbers deleted random, according...
Abstract Mountain ecosystems serve as sentinels of change, and those in the Canadian Rocky Mountains have undergone a pronounced shift over past century. We present quantitative analyses 81 high-resolution image pairs systematic historic surveys repeat photographs habitats, measuring treeline advance, changes tree density, shifts growth form from krummholz to trees. With time-lapse 68 125 years (mean 93.5 years) between pairs, these contain novel information about long-term ecological change...
The classical theory of island biogeography , which predicts species richness using area and isolation, has been expanded to include contributions from marine subsidies, i.e. subsidized (SIB) . We tested the effects subsidies on diversity population density productive temperate islands, evaluating SIB predictions previously untested at comparable scales subsidy levels. found that terrestrial breeding bird communities 91 small islands (approx. 0.0001–3 km 2 ) along Central Coast British...
Globally, anthropogenic disturbances are occurring at unprecedented rates and over extensive spatial temporal scales. Human activities also affect natural disturbances, prompting shifts in their timing intensities. Thus, there is an urgent need to understand predict the response of ecosystems disturbance. In this study, we investigated whether general determinants community disturbance across different types, locations, events. We compiled 14 case studies from four continents, twelve aquatic...
What are the local community consequences of changes in regional species richness and composition? To answer this question we followed assembly microarthropod communities defaunated areas moss, embedded a larger moss "region." Regions were created by combining from spatially distinct sites, resulting pools that differed both composition, but not area. Regional effects less important than seasonality for richness. Initial differences had no direct effect on at any time along successional...
1. Ecological theory has focused on negative interactions, such as competition and predation, to explain species' effects one another. This study demonstrates the importance of considering both positive interactions in explaining how species influence abundances at local scale. 2. Two experiments were conducted using aquatic insect food web Costa Rican bromeliad phytotelmata. Manipulations contrasted strength predation between trophic levels versus facilitation within a level emergence...
Although many studies have focused on factors influencing treeline advance with climate change, less consideration has been given to potential changes in tree spatial pattern across the forest–tundra ecotone. We investigated trends ecotone and geographical variation Yukon, Manitoba, Labrador, Canada. Tree cover was measured contiguous quadrats along transects up 100 m long located Forest, Ecotone, Tundra sections transition. Spatial patterns were analyzed using new local variance estimate...
Abstract Aim Few long‐term fire histories have been reconstructed in coastal temperate rain forests, and little is known regarding the spatial temporal characteristics of lightning human ignitions. We use a multidisciplinary approach to assess impact, scale ecological legacies historic fires. Location focus on perhumid forests located central coast British Columbia, Canada. Methods 700 years aspects activity with 30 plots Hecate Island using scars forest‐stand establishment. then conducted...
Abstract Little is known regarding the fire history of high‐latitude coastal temperate rain forests in Pacific Northwest ( PNW ) North America. While reconstructing historical regimes typically requires dendrochronological records from fire‐scarred trees or stratigraphically preserved lake sediment data, this type information virtually non‐existent region. To describe long‐term a site on central coast British Columbia, Canada, we radiocarbon‐dated 52 pieces charcoal. Charcoal ages ranged...
Abstract Long‐term human habitation has transformed the earth's surface. The combination of time and complex human–environment interactions in remote regions North America likely resulted modified landscapes, though we often consider these free influence due to absence industrial development. We examined long‐term impacts resource‐use on British Columbia's coastal rainforest communities. focused region's widespread sites with extensive shell middens test legacy ancient occupation present‐day...
British Columbia has the greatest biological diversity of any province or territory in Canada. Yet increasing numbers species are threatened with extinction. The current patchwork provincial laws and regulations not effectively prevented declines. Recently, Provincial Government committed to enacting an endangered law. Drawing upon our scientific legal expertise, we offer recommendations for key features legislation that build strengths avoid weaknesses observed elsewhere. We recommend...