Search Results - "HARPER, KAREN A."

effects of fungal root endophytes on plant growth: a meta-analysis by Mayerhofer, Michael S, Kernaghan, Gavin, Harper, Karen A

“…Fungal root endophytes are plant associates that colonize root tissue internally without causing any obvious harm to their host. Although ubiquitous, this…”
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Edge Influence on Forest Structure and Composition in Fragmented Landscapes by HARPER, KAREN A., MACDONALD, S. ELLEN, BURTON, PHILIP J., CHEN, JIQUAN, BROSOFSKE, KIMBERLEY D., SAUNDERS, SARI C., EUSKIRCHEN, EUGÉNIE S., ROBERTS, DAR, JAITEH, MALANDING S., ESSEEN, PER-ANDERS

“…Although forest edges have been studied extensively as an important consequence of fragmentation, a unifying theory of edge influence has yet to be developed…”
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Patterns of shrub abundance and relationships with other plant types within the forest–tundra ecotone in northern Canada by Harper, Karen A., Lavallee, Amanda A., Dodonov, Pavel

“…Throughout the forest–tundra ecotone where trees and tall shrubs are becoming more abundant, knowledge of associations between shrubs and surrounding…”
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Recent advances in studying vegetation at forest edges by Rinas, Christina L., Harper, Karen A., Rad, Javad Eshaghi

“…Natural and anthropogenic forest edges are an integral part of the landscape. On-going timber harvesting and deforestation has resulted in an increase in…”
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The role of the circumarctic forest-tundra ecotone for Arctic biodiversity by Hofgaard, Annika, Harper, Karen A., Golubeva, Elena

“…The arctic forest-tundra ecotone (FTE), which links species communities of the boreal forest with those of the arctic tundra, is expected to respond swiftly to…”
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Differing responses of native and non-native slugs (Mollusca: Gastropoda) to local vegetation structure and landscape composition in cool-temperate forested wetlands by Medeiros, Hugo Reis, Maunder, John E., Haughian, Sean, Harper, Karen A.

“…Slugs are fungivores, herbivores, carnivores and decomposers that provide important ecosystem services and disservices in natural and disturbed habitats. Our…”
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Factors Influencing the Distributions of Two Endangered Lichens in Nova Scotia, Canada by Haughian, Sean R., Gray, Logan, Harper, Karen A.

“…The lichens Erioderma pedicellatum (Hue) P.M. Jørg. and Erioderma mollissimum (G. Sampaio) Du Rietz are endangered species in Canada. Both species are obligate…”
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The role of edge contrast and forest structure in edge influence: vegetation and microclimate at edges in the Brazilian cerrado by Dodonov, Pavel, Harper, Karen A., Silva-Matos, Dalva M.

“…The effect of the adjacent non-forested environment on the forest near the edge, edge influence (EI), is an important impact in fragmented landscapes and is…”
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Edge influence on vegetation at natural and anthropogenic edges of boreal forests in Canada and Fennoscandia by Harper, Karen A., Macdonald, S. Ellen, Mayerhofer, Michael S., Biswas, Shekhar R., Esseen, Per-Anders, Hylander, Kristoffer, Stewart, Katherine J., Mallik, Azim U., Drapeau, Pierre, Jonsson, Bengt-Gunnar, Lesieur, Daniel, Kouki, Jari, Bergeron, Yves

“…1. Although anthropogenic edges are an important consequence of timber harvesting, edges due to natural disturbances or landscape heterogeneity are also…”
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Forest structure and composition at fire edges of different ages: Evidence of persistent structural features on the landscape by Harper, Karen A., Drapeau, Pierre, Lesieur, Daniel, Bergeron, Yves

“…•Distance of edge influence at intermediate-aged fire edges was minimal.•Canopy structure did not change over time.•Intermediate-aged edges provide a reservoir…”
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Forest cover enhances natural enemy diversity and biological control services in Brazilian sun coffee plantations by Medeiros, Hugo Reis, Grandinete, Yuri Campanholo, Manning, Paul, Harper, Karen A., Cutler, G. Christopher, Tyedmers, Peter, Righi, Ciro Abbud, Ribeiro, Milton Cezar

“…Landscape structure and crop management directly affect insect communities, which can influence agriculturally relevant ecosystem services and disservices…”
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Data on vegetation across forest edges from the FERN (Forest Edge Research Network) by Harper, Karen A., Gray, Logan, Macdonald, S. Ellen, Lesieur, Daniel, DeFields, Danielle, Dodonov, Pavel, Franklin, Caroline Mary Adrianne, Haughian, Sean R., Mascarúa López, Liliana, Heathcote, Alexandra, Jager, Krista, Yang, Renee, Angelidis, Christine, Braga, Andreza Lanza, Butler, Wendy, Coley, Sarah, Kornelsen, Jonathan M. E., Murphy, Liam, Pelton, Julia, Recco, Everton Viotto, Oliveira Xavier, Rafael, Wilson, Iain, Ribeiro, Milton C., Silva Matos, Dalva Maria, Bergeron, Yves

“…Many studies have focused on vegetation across forest edges to study impacts of edges created by human activities on forest structure and composition, or…”
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Spatial pattern of invasive and native graminoids in the Brazilian cerrado by Dodonov, Pavel, Harper, Karen A., de Oliveira Xavier, Rafael, Matos, Dalva M. Silva

“…Invasive grasses are an important threat in tropical savannas and grasslands and may be affected by natural and anthropogenic features of the environment. They…”
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Moose browsing, understorey structure and plant species composition across spruce budworm‐induced forest edges by Franklin, Caroline M.A., Harper, Karen A.

“…QUESTION: To what extent do forest edges created by an insect outbreak influence patterns of moose browsing severity, understorey structure and species…”
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Edge influence on herbaceous plant species, diversity and soil properties in sparse oak forest fragments in Iran by Valadi, Gelareh, Eshaghi Rad, Javad, Khodakarami, Yahia, Nemati Peykani, Mostafa, Harper, Karen A

“…Abstract Forest edges have been well studied in temperate and tropical forests, but less so in open canopy forests. We investigated edge influence on plant…”
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Negligible structural development and edge influence on the understorey at 16-17-yr-old clear-cut edges in black spruce forest by Harper, Karen A., Drapeau, Pierre, Lesieur, Daniel, Bergeron, Yves

“…Questions: What is the distance of edge influence on the structure and understorey composition at 16-17-yr-old cut edges in black spruce boreal forest? How do…”
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Edge influence on plant litter biomass in forest and savanna in the Brazilian cerrado by Dodonov, Pavel, Braga, Andreza L., Harper, Karen A., Silva Matos, Dalva M.

“…Edge influence, characterized by differences in ecosystem characteristics between the edge and the interior of remnants in fragmented landscapes, affects a…”
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Structural dynamics at boreal forest edges created by a spruce budworm outbreak by Franklin, Caroline, Harper, Karen, Murphy, Liam

“…Natural disturbances such as insect outbreaks create boundaries that influence vegetation patterns and ecological processes.  To better understand the effects…”
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Effects of observed and experimental climate change on terrestrial ecosystems in northern Canada: results from the Canadian IPY program by Henry, Gregory H. R., Harper, Karen A., Chen, Wenjun, Deslippe, Julie R., Grant, Robert F., Lafleur, Peter M., Lévesque, Esther, Siciliano, Steven D., Simard, Suzanne W.

“…Tundra and taiga ecosystems comprise nearly 40 % of the terrestrial landscapes of Canada. These permafrost ecosystems have supported humans for more than…”
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Structural development following fire in black spruce boreal forest by Harper, Karen A., Bergeron, Yves, Drapeau, Pierre, Gauthier, Sylvie, De Grandpré, Louis

“…We investigated stand development along a chronosequence on organic, clay and sand sites in black spruce boreal forest in northwestern Quebec, Canada. Our…”
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