Jeffrey Alan Cardille

Jeffrey Alan Cardille
McGill University | McGill · Department of Natural Resource Sciences

About

84
Publications
22,980
Reads
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2,890
Citations
Citations since 2016
33 Research Items
1580 Citations
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2016201720182019202020212022050100150200250
2016201720182019202020212022050100150200250
2016201720182019202020212022050100150200250
Additional affiliations
July 2012 - present
McGill University
Position
  • Professor (Associate)
September 2006 - June 2012
Université de Montréal
Position
  • Professor (Associate)
August 2002 - September 2005
University of Wisconsin–Madison
Position
  • PostDoc Position

Publications

Publications (84)
Article
What landscapes best represent the land uses and land covers (LU/LC) of the continental United States? Would the set include a cornfield? A forest? A backyard? Combining principles of landscape ecology and computer science, we identified a small set of “exemplar landscapes”, representing distinct LU/LC pattern types of the conterminous US. We first...
Article
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At the end of the twentieth century, tropical deforestation was associated with the growth of rural populations. An assessment of the factors involved in forest loss suggests that today's trees are more likely to be affected by economic pressures from farther afield.
Article
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International climate change mitigation initiatives such as REDD-plus have fuelled the need for forest monitoring efforts that focus especially on the carbon rich natural ecosystems that are found in the humid tropics. Such monitoring efforts must tackle challenges intrinsic to these regions, such as high atmospheric contamination from particulates...
Article
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Cropland expansion is expected to increase across sub-Saharan African (SSA) countries in the next thirty years to meet growing food needs across the continent. These land transformations will have cascading social and ecological impacts that can be monitored using novel Earth observation techniques that produce datasets complementary to national cr...
Article
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Disturbances such as fire play a critical role in forest ecosystems. However, anthropogenic fires can profoundly impact forests to the point of destabilizing ecosystems. In addition, fires have legacy effects on environments which may be observed in forests for decades after the fire is extinguished. Thus, understanding the extent of historic fires...
Article
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As agricultural land use and climate change continue to pose increasing threats to biodiversity in sub-Saharan Africa, efforts are being made to identify areas where trade-offs between future agricultural development and terrestrial biodiversity conservation are expected to be greatest. However, little research so far has focused on freshwater biod...
Article
Canada has more lakes than any other country, making comprehensive monitoring a huge challenge. As more and more satellite data become readily available, and as faster data processing systems make massive satellite data operations possible, new opportunities exist to use remote sensing to develop comprehensive assessments of water quality at very l...
Article
Full-text available
Knowledge of forest change type and timing is required for forest management, reporting, and science. Time series of historic satellite data (e.g. Landsat) have resulted in an invaluable record of changes in forest conditions. Natural resource management and reporting typically operate at an annual time step, yet the recent addition of data streams...
Article
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Coloured dissolved organic matter (CDOM) is an important water property for lake management. Remote sensing using empirical algorithms has been used to estimate CDOM, with previous studies relying on coordinated field campaigns that coincided with satellite overpass. However, this requirement reduces the maximum possible sample size for model calib...
Article
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Water clarity has been extensively assessed in Landsat-based remote sensing studies of inland waters, regularly relying on locally calibrated empirical algorithms, and close temporal matching between field data and satellite overpass. As more satellite data and faster data processing systems become readily accessible, new opportunities are emerging...
Article
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Purpose of Review The purpose of this article is to review landscape ecology research from the past 5 years to identify past and future contributions from remote sensing to landscape ecology. Recent Findings Recent studies in landscape ecology have employed advances made in remote sensing. These include the use of reliable and open datasets derive...
Article
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Landsat 5 has produced imagery for decades that can now be viewed and manipulated in Google Earth Engine, but a general, automated way of producing a coherent time series from these images—particularly over cloudy areas in the distant past—is elusive. Here, we create a land use and land cover (LULC) time series for part of tropical Mato Grosso, Bra...
Article
Effective wildlife management and conservation require knowledge of distribution, sex composition, and age structure of a population. We explored the distribution of the Baffin Bay narwhal (Monodon monoceros) population in August 2013 by documenting sex and age distribution across the Canadian Arctic Archipelago covering 2,317,152 km2. For 6,314 na...
Article
Horizon scanning is a systematic approach increasingly used in conservation to explore emerging trends, issues, opportunities, and threats. We present the results from one such exercise aimed at identifying emerging issues that could have important scientific, social, technological, and managerial implications for the conservation of inland waters...
Article
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Understanding how irrigated areas change over time is vital to effectively manage limited agricultural water resources, but long-term, high-resolution, and spatially-explicit datasets are rare. The High Plains Aquifer (HPA) in the central United States is one of the largest and most stressed aquifer systems in the world. It supports a $20 billion e...
Article
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The distribution and quality of water resources vary dramatically across Canada, and human impacts such as land-use and climate changes are exacerbating uncertainties in water supply and security. At the national level, Canada has no enforceable standards for safe drinking water and no comprehensive water-monitoring program to provide detailed, tim...
Article
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The ongoing march toward freely available, highly pre-processed satellite imagery has given both researchers and the public unprecedented access to a vast and varied data stream teeming with potential. Among many sources, the multi-decade Landsat archive is certainly the best known, but legacy and current data from other sensors is available as wel...
Article
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The 2017 fire season was one of the largest on record for British Columbia (BC), Canada, in terms of total area burned (estimated 1.2 million ha), affecting the safety and air quality of numerous communities. Moreover, fires of this number and extent alter the wood supply for harvesting, the nature of habitat for wildlife, and can affect regional a...
Chapter
Which ecosystem services are addressed? Provisioning: agricultural production (crops, pork), provision of clean water, maple syrup production, milk production
Article
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Although a landscape is a single environmental system, human systems of governance at the landscape scale are often fragmented across jurisdictions and diverse stakeholders, impeding coordinated planning to maintain ecological connectivity. We sought solutions to overcome this challenge for wildlife corridor conservation in a rapidly developing, mu...
Article
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As freely available remotely sensed data sources proliferate, the ability to combine imagery with high spatial and temporal resolutions enables applications aimed at near-term disturbance detection. In this case study, we present methods for synthesizing burned-area information from multiple sources to map the active phase of the Elephant Hill fire...
Article
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At present, 10.5% of Canada’s land base is under some form of formal protection. Recent developments indicate Canada aims to work towards a target of protecting 17% of its terrestrial and inland water area by 2020. Canada is uniquely positioned globally as one of the few nations that has the capacity to expand the area under its protection. In addi...
Poster
As freely available remotely sensed data sources proliferate, the capacity to combine imagery with high spatial and temporal resolution is enabling applications aimed at near-term disturbance detection. We created rapid and scalable methods for synthesizing information on burned area from multiple sources to map wildfires as they grow, slow, and ar...
Article
Full-text available
Remote sensing is undergoing a fundamental paradigm shift, in which approaches interpreting one or two images are giving way to a wide array of data-rich applications. These include assessing global forest loss, tracking water resources across Earth’s surface, determining disturbance frequency across decades, and many more. These advances have been...
Presentation
The 2017 fire season was the largest on record for British Columbia (BC) in terms of area burned, and mapping these fires is important for monitoring forest-disturbance impacts. Two data sources provide reliable estimates of post-fire perimeters: (1) the Composite-to-Change (C2C) protocol, which makes annual forest disturbance mapping possible for...
Poster
Full-text available
Forests account for a third of Earth’s land cover and provide vital resources for a variety of human and environmental needs. With the opening of the Landsat archive and ongoing access to computing power and large amounts of imagery, long-term quantifications of forest change are now achievable. Here we create a forest loss dataset across the entir...
Chapter
An extensive set of landscape metrics exists to quantify spatial patterns in heterogeneous landscapes. Developers and users of these metrics typically seek to objectively describe landscapes that humans assess subjectively as, for example, “clumpy,” “dispersed,” “random,” “diverse,” “fragmented,” or “connected.” Because the quantification of patter...
Chapter
Citizen science is increasingly recognized as a powerful tool for addressing ecological problems across large areas. Although not a new phenomenon, certain types of citizen science rely on advanced web-based technology not previously available. “Crowdsourcing” refers to a type of citizen science in which large data-collection tasks are allocated to...
Chapter
Landscape patterns vary widely across Earth’s surface as a result of both anthropogenic and natural causes. This variation among landscapes can be quantified by using a large number of metrics developed to capture distinctive qualities of spatial pattern. An informed understanding of pattern–process relationships involves landscape comparisons amon...
Article
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Ecological processes are increasingly well understood over smaller areas, yet information regarding interconnections and the hierarchical nature of ecosystems remains less studied and understood. Information on connectivity over large areas with high resolution source information provides for both local detail and regional context. The emerging cap...
Data
Three landscapes that illustrate the complex relationship between landscape configuration and the characteristics of the resulting omnidirectional connectivity surface. Here, three landscapes are highlighted whose composition is half forest and thus, the same total resistance distributed unevenly around the tile. These landscapes were selected from...
Poster
Full-text available
With the opening of the Landsat archive, researchers have a vast new data source teeming with imagery and potential. Beyond Landsat, data from other sensors is newly available as well: these include ALOS/PALSAR, Sentinel-1 and -2, MERIS, and many more. Google Earth Engine, developed to organize and provide analysis tools for these immense data sets...
Article
Since the opening of the Landsat archive, the availability of remote sensing data has increased dramatically, and algorithms that can interpret large time series of satellite imagery are in rapid development as additions to the decades of interpretation of remotely-sensed images. To date, processing of these massive data repositories has focused mo...
Article
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AbstractForest fragmentation has been studied extensively with respect to biodiversity loss, disruption of ecosystem services, and edge effects although the relationship between forest fragmentation and human activities is still not well understood. We classified the pattern of forests in Massachusetts using fragmentation indicators to address thes...
Article
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To maximize specific ecosystem services (ES) such as food production, people alter landscape structure, i.e., the types of ecosystems present, their relative proportions, and their spatial arrangement across landscapes. This can have significant, and sometimes unexpected, effects on biodiversity and ES. Communities need information about how land-u...
Article
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1.Biodiversity conservation in landscapes undergoing climate and land-use changes requires designing multi-purpose habitat networks that connect the movements of organisms at multiple spatial scales. Short-range connectivity within habitat networks provides organisms access to spatially distributed resources, reduces local extinctions, and increase...
Article
There are perhaps millions of lakes in Canada, and remote sensing is a crucial tool for making regional estimates of carbon stocks. Estimation using existing platforms has been hampered by both spatial and spectral resolution, but a new generation of sensors promises greatly improved image quality with broad-scale repeat coverage. Nearly all remote...
Article
Boreal forests maintain regionally important biodiversity and globally important ecosystem services, such as carbon storage and freshwater resources. Many boreal systems have limited anthropogenic disturbances and are preserved, in effect, to date largely by their harsh climates and remoteness. As of 2011, almost 10% of Canada is subject to some ma...
Article
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Measuring landscape connectivity in ways that reflect an animal's propensity or reluctance to move across a given landscape is key for planning effective conservation strategies. Resistance distance, based on circuit theory, is one such measure relevant for modeling how broad-scale animal movements over long time periods may lead to gene flow acros...
Article
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Connectivity models are useful tools that improve the ability of researchers and managers to plan land use for conservation and preservation. Most connectivity models function in a point-to-point or patch-to-patch fashion, limiting their use for assessing connectivity over very large areas. In large or highly fragmented systems, there may be so man...
Article
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Mapping large areas for planning and conservation is a challenge undergoing rapid transformation. For centuries, the creation of broad-extent maps was the near-exclusive domain of expert specialist cartographers, who painstakingly delineated regions of relative homogeneity with respect to a given set of criteria. In the satellite era, it has become...
Conference Paper
Background/Question/Methods As increasing attention is paid to the storage and flux of carbon in and around boreal lakes, strategies to make and refine credible region-wide estimates of stocks and fluxes will be increasingly important. Given that there are hundreds of thousands of lakes in the world’s lake-rich regions, concerted field campaigns...
Article
AimWe tested the energy and metabolic theories for explaining diversity patterns of crustacean zooplankton in Canadian lakes, and evaluated the influence of regional and local environments on community structure. LocationThe 1665 studied lakes are distributed across Canada in 47 ecoprovinces. Methods Our database included the occurrence of 83 pelag...
Presentation
Full-text available
Northern regions underlain by permafrost will undoubtedly be impacted by the projected increase in air temperature. A growing number of structures that were once built with great confidence on perennially frozen soils are already starting to show signs of degradation. Permafrost degradation (e.g. active layer deepening) can lead to significant thaw...
Article
Full-text available
As increasing attention is paid to the storage and flux of carbon in and around boreal lakes, systematic strategies to make and refine credible region-wide estimates of stocks and fluxes will be increasingly important. Given that there are hundreds of thousands of lakes in the world's lake-rich regions, even concerted long-term field campaigns can...
Article
Full-text available
For northern regions underlain by permafrost, the projected increase in temperatures will greatly impact the physical properties of soils and their capacity to support infrastructure. In this context, the need to identify land parcels to build new housing in a safe and sustainable manner is pressing in Nunavik (northern Quebec, Canada). To guide re...
Article
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Northern Quebec (Nunavik) presents an important intersection between population growth and climate change. The Inuit population of Nunavik has the fastest growth rate in any region of Canada. Land-use planning is an urgent and pressing need for northern communities built on permafrost, where there are considerable risks to development in areas wher...
Poster
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Permafrost warming and thawing is already a reality in Nunavik (Allard et al., 2006; 2007; 2009; Calmels et al., 2008; Smith et al., 2010) and elsewhere in the circumpolar north. Climate models suggest that this warming trend will prevail in the future and that the rate of change will be faster in the Arctic (Sushama et al., 2007; IPCC, 2007). Cons...
Poster
Full-text available
Le Nord du Québec (Nunavik) fait face à des défis inédits, se trouvant actuellement à la croisée entre une forte croissance démographique et des changements accélérés du climat. Non seulement le manque d’habitations est criant, mais le dégel du pergélisol engendré par la hausse des températures vient augmenter la complexité de la planification domi...
Article
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We studied the home range and habitat use of northern map turtles (Graptemys geographica) in Québec, Canada, in a river comprised of multiple channels and islands. To better represent the home range of turtles in such complex river landscapes, we developed the complex linear home range (CLHR), a generalized estimator designed to more accurately rep...
Article
Full-text available
Canada is a large nation with forested ecosystems that occupy over 60% of the national land base, and knowledge of the patterns of Canada's land cover is important to proper environmental management of this vast resource. To this end, a circa 2000 Landsat-derived land cover map of the forested ecosystems of Canada has created a new window into unde...
Article
Full-text available
In this study, changes in land cover and land use patterns that occurred between 1985 and 2000 in the surrounding basin of the Barra de Navidad coastal lagoon in Jalisco, Mexico are quantified and explained. Two satellite images from 1985 (Landsat TM) and 2000 (Landsat ETM+) were analyzed with supervised classification and ground truthing to evalua...
Article
Full-text available
In this study, changes in land cover and land use patterns that occurred between 1985 and 2000 in the surrounding basin of the Barra de Navidad coastal lagoon in Jalisco, Mexico are quantified and explained. Two sate-llite images from 1985 (Landsat TM) and 2000 (Landsat ETM+) were analyzed with supervised classification and ground truthing to evalu...
Poster
Full-text available
Northern Quebec is situated at an important intersection between population growth and climate change. In a region where structures could once be built with relative confidence on permanently frozen ground, changes in climate have created substantial concerns in Inuit communities. Rapid population growth in Nunavik is leading to housing shortages,...
Conference Paper
Background/Question/Methods Finding cloud-free satellite imagery for large-scale ecological studies is a notoriously difficult task. The obstacles include clouds, haze, extraneous phenological changes between dates, and data corruption. These problems are especially difficult to resolve in humid tropical forests, where many images are either part...
Article
How should researchers store and share data? For most of history, scientists with results and data to share have been mostly limited to books and journal articles. In recent decades, the advent of personal computers and shared data formats has made it feasible, though often cumbersome, to transfer data between individuals or among small groups. Mea...
Article
Recent advances in computer networks and information technologies have created exciting new possibilities for sharing and analyzing scientific research data. Although individual datasets can be studied efficiently, many scientists are still largely limited to considering data collected by themselves, their students, or closely affiliated research g...
Article
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1] As humanity develops strategies to manage and adapt to climate change, potential changes to carbon cycles are of increasing interest. The potential sensitivity of carbon sources and sinks in lakes may be of global importance, yet the direction and magnitude of possible changes are poorly understood across entire lake-rich regions. We used a spat...